Substation Earthing Ppt

Electromagnetic Pulse (EMP) 2017 What is EMP? Electro Magnetic Pulse is a burst of electromagnetic radiation from an explosion or a suddenly fluctuating magnetic field EMP from a nuclear explosion high above the atmosphere EMP from a solar storm Types of EMP E1 Pulse – very fast component of nuclear EMP. Substation Safety Audit. 0, assumed that substation is ungrounded EARTHMDL Name of the Earth Model Bus Substation Data BUSNUM, SUBNUM Where: Michael. Depending on the size of the substation and the resistance value that it was designed to achieve, the number of ground rods varies. Step potential is the voltage difference between a person's feet and is caused by the dissipation gradient of a fault entering the earth. Personnel Protection Most company policies require you to notify the dispatch center or substation owner before entering and leaving a substation, which is a good industry practice for several reasons. Read about design of substation earthing system here. Petersen in 1916. This instrument earth usually also called reference earth since it serve the reference point of the instrument loop (ground of internal electric circuit inside the instrument). Find PowerPoint Presentations and Slides using the power of XPowerPoint. To provide safety to personnel during normal and fault conditions by limiting step and touch – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow. Outdoor ac substations, either conventional or gas-insulated, are covered in this guide. 2 primary functions of a safe earthing system are i) ensure that a person who is in the vicinity of earthed facilities during a fault is not exposed to the possibility of a fatal electrical shock, ii) provide a low impedance path to earth for currents occurring under normal and fault conditions. Chief Electrical Engineer Vestas Americas Introduction • Need for grounding • Codes and Standards for grounding • Wind Turbine Generator grounding design • Foundation + Horizontal Electrode grounding design - Integrated with rest of wind power plant. Personnel trained to work inside substations must take appropriate safety precautions and always wear personal protective equipment (PPE). Power Plant Electrical Distribution Systems Gary W Castleberry, PE Course Description This one hour course provides an introduction to the design of electrical distribution systems found in electrical power generation plants. High voltage switchgear room substationwhere only high voltage switchgear panels installed. n Fence is outside of ground grid area and is connected to the substation ground grid. ETAP Model For Earth Mat Design Proceedings of International Academic Conference on Electrical, Electronics and Computer Engineering, 8th Sept. View and Download PowerPoint Presentations on Electrical Earthing PPT. Isolator does not have any system to avoided arching during disconnection. Earth Potential Rise. Gas Insulated Substation PPT PDF Presentation Gas Insulated Substations (GIS) is a compact,multicomponent assembly enclosed in a ground metallic housing in which the primary insulating medium is compressed Sulphur hexafluoride (SF6) gas. com - id: 3c7c24-NjQ4M. Earthing resistance is depends on soil resistivity. New York State Department of Transportation coordinates operation of transportation facilities and services including highway, bridges, railroad, mass transit, port, waterway and aviation facilities. A severe earth fault leads in to a severe short circuit situation but the initiation occurs with a slow and simple earth fault. Abstract The main purpose of this paper is to acquaint the reader with various types of grounding systems prevalent in an Electrical substation and their importance. Read about design of substation earthing system here. ppt", slide 2 and 3) 3- Calculate Zs = Uo / Ia B - For a 0,4 seconds disconnection time. Lightning overvoltage and protection of power substations. The Substation Construction Manual is not intended to replace Asset Management Standards, but. Substations contain transformers in order to convert voltage levels, as well as circuit breakers, and a large. Failure of the dc control power can render fault detection. The short time rating of the transformers shall be 31. Earthing and lightning protection Design services, site surveys and analysis Earthing & lightning protection solutions There are many benefits of coming to Furse for earthing and lightning analysis: – Specialist advice from our fully qualified technical team, which focuses on earthing and lightning protection. Primary and Secondary Electrical Distribution Systems Critical Facilities Round Table 12th Quarterly Membership Meeting June 2, 2006 David D. As the condition of grounding components change over time due to corrosion of earth. FOREWORD 0. Substation arrangements have to include adequate space for the installation and possible removal of large pieces of equipment such as power transformers and power circuit breakers. This course is intended to prepare the target persons with the ability to perform all electrical grounding system design for Domestic, Commercial and Industrial Facilities and AC Substations. lines section 5 industrial premises 22. PDF | Electric Substation Design Implementations through CYMGRD This book is to discuss developmental procedure of an effective substation earthing system model to ensure that step and touch. As a result, it is necessary to install expensive filter-compensation units and reactive power compensation units. Presentation Summary : A minimum value of the substation grounding system resistance in uniform soil can be estimated by means of the formula of a circular metal plate at zero depth. requirements, prefabricated substations, equipment for pole-mounted substations. 1 ohm If RG<=0. System Earthing is the earthing associated with current carrying conductor & is essential for the security of the system. ProfessorAsst. The place where the conversion from "transmission" to "distribution" occurs is in a power substation. To provide the path for discharging the earth currents from neutrals, faults, Surge Arresters, overheads shielding wires etc. We supply and offer installation earthing system, earthing material, earthing electrodes, earthing equipment, earthing pipe, earthing strip, earthing system installation, gi earthing strip, earthing system services, electrical items from Ganpati Electricals (P) Ltd, New Delhi, India. Petersen Coils – Basic Principle and Application Petersen coils are used in ungrounded 3-phase systems to limit arcing currents during earth faults. lines section 5 industrial premises 22. zA GIS is the implementation, within a complete HV substation, of the remarkable sulphur hexafluoride (SF6) properties in terms of voltage withstand and current interruption zSF6 main data zNeutral gas: insulators and live parts are perfectly protected from contamination and oxidation zDensity 6. This substation employed For voltage beyond 66k. Between the generating station and consumer, electric power may flow through several substations at different voltage levels. Regulation 8(1) requires Distributors to connect their ns to earth and ensure etwork they remain connected to earth, so far as reasonably practicable, during fault conditions. AN-40-005 Rev. Kenya Power Transmission System Improvement Project Lot 3-132/33 kV Substations and Switching Stations Volume 2 Section- VI Employer's Requirements. The overcurrent device protects against ground fault conditions provided that … Our circuits have been installed so that all conductive metals are bonded together and to the service neutral In Review … Grounding is a connection to earth intended to protect our electrical system from lightning and high voltage In Review …. After cheap electric cable online? Full range of sizes and types of electric cable and accessories. A substation is assembly of large no of electrical equipment. Arial Calibri Times New Roman Wingdings Office Theme Default Design Gas-insulated Switchgear (GIS) STANDARDS Cost Comparison of AIS and GIS Sub-stations 145kV GIS (ABB ELK04) 145kV GIS (ALSTOM F35) 420kV GIS (ALSTOM T155) GIS Main Components Circuit Breaker 3-Positin Disconnector and Earthing Switch Disconnector Make-Proof Earthing Switch 420kV. By Mladen Kezunovic THE NEW SUBSTATION T he electricity grid was invented in the 19th century and greatly ex-panded in the 20th. ETAP Model For Earth Mat Design Proceedings of International Academic Conference on Electrical, Electronics and Computer Engineering, 8th Sept. Instrumentation and Control Qualification Standard. Flood plains and wetlands are avoided. We supply Megger earthing & grounding test equipment, soil resistivity testers and ground resistance testers for field engineers. SUBSTATION • SUBSTATION - A station in the power transmission system at which electric power is transformed to a conveniently used form. Thus, it triggered TNB to look into reviewing its current policy on compact substation installations. earth after 100 years essay school ap world history essay thesis examples 200 word essay time website application letter editing for hire ca professional blog post writer for hire for college The Quarreling Siblings - Good and Evil 100 american essay memorable day of my life birthday essay writing camping trip compact substation thesis. All the power system equipments in substation are connected to the grid by conductors. 415KV substation for construction supply. Aep’s Effective Ground Grid Resistance Measurement Procedure 285674 PPT. Earthing For Safety. n Fence is within the ground grid area and is connected to the substation ground grid. Case DFO/JSKL-1J Case DFO 117 Voltage detector TAG 220 with adapter TAG/RS Adapter for operating. The equipment like bus bars, isolator, power transformer etc. Specification Engineer. Grounding=s main purpose is to provide a common point of reference between various sources of electrical energy, i. I understand that earthing resisters are used to earth the neutral point of transformers to reduce the earth fault current in the transformer (is this correct). Outdoor Substation :This subststion are installed in open land. com, find free presentations research about Electrical Earthing PPT. Neutral Earthing Resistors (NERs) are one of the commonest types of earthing systems in medium-voltage AC distribution networks. The short time rating of the transformers shall be 31. • Earthing resistance: resistance between the main earth collector (or node) and the Earth. Access the full version online. The GIS substation has most of its electrical structure contained in sealed tubular enclosures. Purpose: The intent of this guide is to provide guidance and information pertinent to safe grounding practices in ac substation design. A commonly used tool for the detection of static charges is the electrostatic field meter. Abstract--This paper proposes a method of grounding system analysis in the presence of satellite electrode for hilly region. first transformer will charging with any problem but we go charge the second trans that incoming surge arrest er will burst. Grounding System for High Resistivity Limited Area Substations in Hilly Region of Himachal Pradesh. System earthing is primarily required to ensure that the potential of each conductor of the system restricts to its desired value for which the insulation is provided. guidelines for earthing in industrial. The site should be chosen to avoid soil filling, earth removal etc. In the fault situations the electric apparatus and systems become dangerous to humans. 5 meters, which provides a common ground to all the equipment present in the substation. Get Seasonal Influence on Safety of Substation Grounding Seminar Report and PPT in PDF and DOC. earth after 100 years essay school ap world history essay thesis examples 200 word essay time website application letter editing for hire ca professional blog post writer for hire for college The Quarreling Siblings - Good and Evil 100 american essay memorable day of my life birthday essay writing camping trip compact substation thesis. All requests from this address have temporarily been blocked. Safe Work Practices on High Voltage Substation Apparatus Revision No: 3 Page 8 of 19 Situation Hazard Control Reference HV Power Capacitors may retain an electrical charge Retained electrical charge hazardous to persons even after the apparatus has been isolated fro m the source of supply. Day-light corona cameras development was enabled because the ozone layer surrounding the earth absorbs the sun light in the 260-300nm wavelengths making these wavelengths on earth pitch black around the clock, except for mostly man-made light sources, such as fire, florescent lights, corona, arcing, arc welding, which all change the state of. Choose from leading brands in substation testing equipment such as Seba, Megger (Programma) and Ridgid. Mitton ElectroNet provided the lead design expertise on the 110/33-22-11 kV mobile substation project; the largest mobile substation built in New Zealand. These terms were coined over a time period to identify the appropriate short circuit current magnitude that engineers could use to size the switchgears, switchboards, panelboards, and the circuit breakers. International Journal of Engineering Trends and Technology (IJETT) - Volume 15 Number 8 - Sep 2014 International Journal of Engineering Trends and Technology. In an electrical installation, an earthing system or grounding system connects specific parts of that installation with the Earth's conductive surface for safety and functional purposes. v) Requirement of earthing material, supply & spreading of crushed stone/gravel for the bay/bays for existing substation under scope of contract shall be assessed through site visit & to be guided by supply & Erection schedule. It is dungarees to operate isolator in full load condition. A severe earth fault leads in to a severe short circuit situation but the initiation occurs with a slow and simple earth fault. Urban substations are usually built in brick, whereas rural ones are often installed externally directly on the MV pylon. Substation and utility battery and charging systems for AC / DC power systems for utility substations, recloser and control systems. Earthing system A protective earth (PE) connection ensures that all exposed conductive surfaces are at the same electrical potential as the surface of the Earth, to avoid the risk of electrical shock if a person touches a device in which an insulation fault has occurred. This is the basic theory of earting transformer, the operation and other features of an earthing transformer is described as follows. The equipment like bus bars, isolator, power transformer etc. A current copy of this document shall be readily available at each Reclamation office and facility and to each employee that works on equipment required to be protective grounded. Our interactive two-day training course provides delegates with a practical and theoretical introduction to power systems earthing. During an earth fault a phase conductor is connected to earth and fault current starts to flow between the phase and earth. It uses measurements of the fundamental component of the earth-fault current. design of coal mine belt conveyor control system based on opc, opc has been widely applied to coal mine automation control system as an industry standard of communication between the field control substation and pc in the control system in this paper, through the analysis and design for the transport. The permanent joining of metallic parts to form an electrically conductive path that ensures electrical continuity and the capacity to conduct safely any current likely to be imposed [NFPA 70 Article 100]. and earth networks (the required earth resistance is obtained more quickly). The substation grounding grid is a system of horizontal, interconnected bare ground conductors, spaced a few meters apart, buried in the earth at a depth varying from 0. , Square D Engineering Services Introduction The selection of system arrangement has a profound impact upon the reliability and maintainability of the system. New York State Department of Transportation coordinates operation of transportation facilities and services including highway, bridges, railroad, mass transit, port, waterway and aviation facilities. They are usually interlocked with a disconnector such that they may only be opened if the disconnector itself is open. Mod Subs can be incorporated into an existing sub or used as a stand alone sub. GROUNDING SYSTEMS Part 1 The objective of a grounding system are: 1. 2 Normative references. electrical substations, power plants, or high-voltage transmission lines. and contractors with a comprehensive source for BMPs related to earth disturbing activities during construction, repair, and maintenance work associated with transmission lines, substations, and other cooperative projects. While it is easy to understand the definition of Earthing, the topic of Earthing and its application in practice is often the most misunderstood of all. Add a 240 kV transmission line to connect the Facility to the proposed Pioneer 805S substation. Earthing Device An approved means of providing connection between a conductor and earth of adequate strength and capability being one of the following a) Primary Earths Earth (s) a fixed Earth Switch (ES) with an equivalent electrical capacity which is applied between the point of work and all points of EHV/HV isolation and which is applied. Most utility power companies treat transmission and distribution lines as separate entities. Presentation Summary : A minimum value of the substation grounding system resistance in uniform soil can be estimated by means of the formula of a circular metal plate at zero depth. com - id: 64529f-NDlmY. 1 ohm If RG<=0. Distribution, transmission, and generating plant substations are also included. The trailer mounted substation is designed to meet the needs of temporary power supply on construction sites, substation maintenance and emergency power supply. Its popularity is mainly due to its unique physical and electrical properties including: 1) Dielectric strength twice that of air. Elevation Layout, Earthing Grid, Earthing Grid Design, DSLP (Direct Stroke Lightning Protection), DSLP Design, OPGW Cable, Distribution Substation and Substation Design 1. Insulators in substation are provided to avoid any leakage current from live electrical. Safety remains a primary concern for substation owners, specifically in terms of protecting human life, and ensuring reliable network operation. Arial MS Pゴシック Calibri Arial Narrow Blank Presentation PowerPoint Presentation PowerPoint Presentation What does hazard mean? Why know about it? What are the safety priorities? How do you respond to electrical incidents? Do you want to be a victim? What are the types of injuries? What are the levels of effect of current?. May 19, 2018 Title 49 Transportation Part 1200 to End Revised as of October 1, 2018 Containing a codification of documents of general applicability and future effect As of October 1, 2018. To provide an earth mat for connecting neutral points, equipment body, support structures to earth. Between the generating station and consumer, electric power may flow through several substations at different voltage levels. The Electricity Act. 33 per unit if a broken neutral exists on any part of a system. one of the lowest average fault rates in the world according to a SGCC Service Report. Since the Soil Resistivity is not zero. Source Water Capacity Plan Update Final Draft (8/11/2015 – 9. A new technique for rail traction bond connection using rail earth clamps has been used thereby eliminating drilling of holes in the rails. Where do the images come from? How are they they put together? And how often are they updated?. A severe earth fault leads in to a severe short circuit situation but the initiation occurs with a slow and simple earth fault. ANSI/IEEE (1983) Standard 81-1983. SF6 Advantages (1, 2) The electric power industry has been using Sulfur Hexafluoride (SF6) gas as a dielectric and insulating material for many years. These earths may then be removed one phase at a time for work to be carried out. Google Earth is the most photorealistic, digital version of our planet. aspects of substation design for both Greenfield and Brownfield substation projects to meet the performance expected by Ergon Energy. So the software should be capable of meddling above ground and below ground structures. Earthing and lightning protection Design services, site surveys and analysis Earthing & lightning protection solutions There are many benefits of coming to Furse for earthing and lightning analysis: – Specialist advice from our fully qualified technical team, which focuses on earthing and lightning protection. GROUNDING SYSTEMS Part 1 The objective of a grounding system are: 1. Substation and utility battery and charging systems for AC / DC power systems for utility substations, recloser and control systems. Introduction to Geomagnetic Fields. Limiting step and touch potential to safe values in your substation is vital to employee safety. Access the full version online. Auxiliary DC Control Power System Design for Substations Michael J. for a delta winding), an earthing transformer may be used to provide a return path for single phase fault currents; In such cases the impedance of the earthing transformer may be sufficient to act as effective earthing impedance. Solar Photo‐Voltaic (PV) Power Plant Earthing Design Services In 2015 1. The working group was established in November 1995. For all protection & measurement CTs, Close the earth point in the nearest point to the CT. The Electricity Act. The former risk arises mainly in connection with large electrode systems as at power stations and substation. We supply Megger earthing & grounding test equipment, soil resistivity testers and ground resistance testers for field engineers. Primary and Secondary Electrical Distribution Systems Critical Facilities Round Table 12th Quarterly Membership Meeting June 2, 2006 David D. This PPT contain 88 pages due to time constrain we are only ableThis PPT contain 88 pages, due to time constrain, we are only able. Test link Cable(Earthing conductor) Clamp Rod(Earthing electrode) Rod coupler Recommended values of earth resistance Recommended earth resistance(ohm) system 0. earthing in power stations and substations earthing associated with overhead power. A - Substation Standards Switching Diagram Operating Numbers Bus Configuration. Open all earth point in the loop, check with buzzer that there is no earth link is closed, then close only one point. Earthing Standards. They connect different parts of a grid and are a source for subtransmission lines or distribution lines. n Fence is within the ground grid area and is connected to the substation ground grid. As the condition of grounding components change over time due to corrosion of earth. substations to the distribution substations. In some countries what is called "ground" in the U. In other words, to connect the metallic parts of electric machinery and devices to the earth plate or earth electrode (which is buried in the moisture earth) through a thick conductor wire (which has very low resistance) for safety purpose is known as Earthing or grounding. SF6 GAS AND THE ENVIRONMENT. · Individual shield (drain wire) of single pair cable shall be terminated at earth or ground terminal block inside the instrument enclosure. Mobile substation or portable substation is a completely self-contained trailer mounted substationwith capacities upto 132 kV. Abstract: As far as substation automation systems are concerned, one of the prime requirements of most Indian utilities is the interoperability between IEDs of different manufacturers. Power Plant Electrical Distribution Systems Gary W Castleberry, PE Course Description This one hour course provides an introduction to the design of electrical distribution systems found in electrical power generation plants. Earthing system is designed followed by electrical system required and the application. PRE COMMISSIONING TESTS ON EQUIPMENT AT 33/11 KV SUB STATIONS TESTS ON TRANSFORMERS 1. We supply Megger earthing & grounding test equipment, soil resistivity testers and ground resistance testers for field engineers. Slow earth fault or leakage protection. People are injured when they become part of the electrical circuit. There are five major considerations in the differences between the two high voltage substations: their construction, installation, operation, ongoing maintenance and total cost of ownership. for a delta winding), an earthing transformer may be used to provide a return path for single phase fault currents; In such cases the impedance of the earthing transformer may be sufficient to act as effective earthing impedance. It is dungarees to operate isolator in full load condition. switchyards and substations, and transmission lines. IEEE guide for safety of AC substation groundings. 2003 mandated the separation of Transmission functions under Power Sector Reforms. Abdus Salam Adjunct Research Professor University of Western Ontario London Email: [email protected] Please try again later. May 19, 2018 Title 49 Transportation Part 1200 to End Revised as of October 1, 2018 Containing a codification of documents of general applicability and future effect As of October 1, 2018. The earthing transformer covered by this specification shall be complete in all respect. Add dynamic action to your work with this fully editable and professional Climate Change PowerPoint Template to complete all your reports and personal or professional presentations. Case DFO/JSKL-1J Case DFO 117 Voltage detector TAG 220 with adapter TAG/RS Adapter for operating. This 2-Day Substation Grounding Training course will discuss how to maintain, test, and inspect a proper grounding system for the electrical power substation. Substation Safety Clearances Majority of electrical substations will be air insulated type. 17 Continuous shield wire Shield wire located along the entire length of overhead lines. Earthing resistance is depends on soil resistivity. This is the international standard governing communications, SCADA and automation systems within substations. The collector substation is also able to collect thermal and hydroelectric power, so positioning one next to a power plant is an efficient way to generate power. Continuity of the supply neutral conductor and earthing connections 8. It provides means of dissipating electric current into the earth without exceeding the operating limits of the equipment. Lightning overvoltage and protection of power substations. Urban substations are usually built in brick, whereas rural ones are often installed externally directly on the MV pylon. • Earthing resistance: resistance between the main earth collector (or node) and the Earth. The electrical earthing is done by connecting the non-current carrying part of the equipment or neutral of supply system to the ground. The requirement of soil filling and earth removal takes time and increases total cost of substation ; Historical data of worst flood is taken into account to avoid water logging of the substation in case of possibility of flood. Protecting Distribution Substation Assets – Modern Protection Schemes With Microprocessor-Based Relays Lee Ayers, Mid-Carolina Electric Cooperative Mark Lanier, Atlantic Power Sales, LLC Larry Wright, Schweitzer Engineering Laboratories, Inc. Abstract--This paper proposes a method of grounding system analysis in the presence of satellite electrode for hilly region. Urban substations are usually built in brick, whereas rural ones are often installed externally directly on the MV pylon. The number of 500 kV substations in the. So R1 urce Fuse To Load R2 R3 S Transmission Line. Under normal conditions, the vector sum of currents in RYB current transformers (CTs) and NCT equals zero. The high-voltage underground cables used on the National Grid system can be one of three types: direct buried, trough, or tunnel. Non neutral grounding methods are those used for grounding systems not solely involved to power generation or distribution. 5 meters, which provides a common ground to all the equipment present in the substation. Conductor Size Calculation… r is the co-efficient of linear expansion of the earthinging conductor r is the resistivity. As such, a neutral earth is generally classified as a functional earth: serving a purpose other than for the prevention of electric shock. Petersen Coils – Basic Principle and Application Petersen coils are used in ungrounded 3-phase systems to limit arcing currents during earth faults. When the “air breakdown” point is exceeded, stepped leader starts to propagate slowly towards the ground and it will decide where it wants to strike as it is closer to the earth’s surface. lines section 5 industrial premises 22. Get substation equipment online at best price. Work in Substations - General. They connect different parts of a grid and are a. Thompson, Schweitzer Engineering Laboratories, Inc. The new line connects the two substations, which are approximately 10 miles apart, and carry electricity at 161 kV. A piece of equipment is said to be protected from a direct stroke if it remains below the curved surface of the sphere. They are provided with coolers. Yves Harmand of Electricité de France, who was the. New York State Department of Transportation coordinates operation of transportation facilities and services including highway, bridges, railroad, mass transit, port, waterway and aviation facilities. The fence is connected to a separate grounding conductor. There is numerous electrical substation components like outgoing and incoming circuitry each of which having its circuit breakers, isolators, transformers, and busbar system etc for the smooth functioning of the system. substations, have been installed or retrofitted with specific ground connection point(s). Numerous forms of safety identification such as high voltage labels, voltage markers, transformer labels and substation signs are needed for safety. Also called Neutral Grounding Resistors, they limit the current that would flow through the neutral point of a transformer or generator in the event of an earth fault. Earthing and lightning protection Design services, site surveys and analysis Earthing & lightning protection solutions There are many benefits of coming to Furse for earthing and lightning analysis: - Specialist advice from our fully qualified technical team, which focuses on earthing and lightning protection. 33 per unit if a broken neutral exists on any part of a system. Earthing considerations, the basics. Electrical engineers have spent over 130 years devising ways to control lightning and power surges in the electrical distribution grid. The quality of our gas insulated switchgear is the result of a rigorous standard quality management system, which has been certified in accordance with ISO ® 9001. As a result, it is necessary to install expensive filter-compensation units and reactive power compensation units. The Application and Selection of Lightning Arresters. The functions of grounding systems or earth mat in include: Ensure safety to personnel in substations against electrical shocks. Slow earth fault or leakage protection. While the collector substation shares a resemblance to the distributor substation, its power flow works in the opposite direction, collecting energy and feeding a transmission grid. used in the substation for the safety of the operation personnel as well as. Compact Substion is a prefabricated, type tested as per latest IEC standard 62271-202 and CSS is arc tested assembly comprising an enclosure containing medium voltage (MV) switchgear, distribution transformers, low voltage (LV) switchboards, connections and auxiliary equipment to supply low voltage energy from medium voltage systems. Substations Earthing Training Courses. The function of a substation is to transform voltage to a lower or higher level of voltage, and to provide the ties, transformation, switching, and protection for the transmission and distribution systems. BEVERWIJK 380/150kV SUBSTATION Earthing and lightning protection system design; interface with civil. The earthing of surge arresters is another example of functional earthing, but this is not covered in the present document. v) Requirement of earthing material, supply & spreading of crushed stone/gravel for the bay/bays for existing substation under scope of contract shall be assessed through site visit & to be guided by supply & Erection schedule. For power to be useful in a home or business, it comes off the transmission grid and is stepped-down to the distribution grid. Wastewater Facilities Plan Powerpoint Presentation PDF Document from 1-20-2015 Meeting (1 MB) Wastewater Facilities Plan Powerpoint Presentation PDF Document from 3-17-2015 Meeting (720 KB) Source Water Capacity Update Project Docs. Abstract The main purpose of this paper is to acquaint the reader with various types of grounding systems prevalent in an Electrical substation and their importance. The grounding system in substation is very important. The substation in Bhinmal, Jalore-343029, Rajasthan is one of the largest power grids in the state of Rajasthan and the north-west area India. Avoid earth loops. Suzlon Energy Ltd, a world leader in renewable energy solutions develops products in the Wind Energy & Solar energy sector and is a leading wind turbine and windmill supplier. Yves Harmand of Electricité de France, who was the. The electricity substation is a network of electrical equipment which is connected in a structured way in order to supply electricity to end consumers. Fault currents and voltages are commonly transferred directly into houses, onto water taps, onto fences, into pools, all protected by the bastion of safety – 1Ω. Three 66/11 KV substations are operational Two 66/11 KV substations are under planning. 15 kg/m3 at atmospheric pressure. The point of reference is the Earth's conductive surface. Gas Insulated Substation PPT PDF Presentation Gas Insulated Substations (GIS) is a compact,multicomponent assembly enclosed in a ground metallic housing in which the primary insulating medium is compressed Sulphur hexafluoride (SF6) gas. The coil was first developed by W. Earth Potential Rise (EPR) is caused by electrical faults that occur at. With proper caution,the methods described herein are also applicable to indoor portions of such substations, or to sub-stations that are wholly indoors. Earthing system. Pipe earthing • Pipe earthing is best form of earthing and it is cheap also in this system of earthing a GI pipe of 38 mm dia and 2meters length is embedded vertically in ground to work as earth electrod but the depth depend upon the soil conditions, there is no hard and fast rule for this. The system earthing is so designed that it should facilitate the efficient and quick operation of protective relays in case of any earth fault. Compact Substion is a prefabricated, type tested as per latest IEC standard 62271-202 and CSS is arc tested assembly comprising an enclosure containing medium voltage (MV) switchgear, distribution transformers, low voltage (LV) switchboards, connections and auxiliary equipment to supply low voltage energy from medium voltage systems. IEEE 80 Guide for Safety in Alternating-Current Substation Grounding IEEE 81 Guide for Measuring Earth Resistivity, Ground Impedance, and Earth Surface Potentials of a Ground System IEEE 142 Recommended Practice for Grounding of Industrial and Commercial Power Systems IEEE 399 IEEE Recommended Practice for Power Systems Analysis (Brown Book). guidelines for earthing in industrial. Introduction to Geomagnetic Fields. Reference shall be made to EDI 516- Major substation earthing design, construction and commissioning,for complete instructions applicable to earthing systems associated with LPS. Between the generating station and consumer, electric power may flow through several substations at different voltage levels. Isolator does not have any system to avoided arching during disconnection. The Division starts with 5 engineers in the Construction of the Congress Palace 60/20kV S/S in Syria and the Rehabilitation of Jamhour & Bsalim 150kV S/S in Lebanon. It consists of a network of copper conductors (generally called shield or screen) mounted all over the electrical equipment in the sub-station or power station. Solar Photo‐Voltaic (PV) Power Plant Earthing Design Services In 2015 1. Enterprise power system analysis software to design, analyze, monitor, and operate electrical power systems in generation, transmission, distribution, industrial, transportation and low voltage sectors. : A M150261 (04/14/15) File: AN40005. Add dynamic action to your work with this fully editable and professional Climate Change PowerPoint Template to complete all your reports and personal or professional presentations. The collector substation is also able to collect thermal and hydroelectric power, so positioning one next to a power plant is an efficient way to generate power. Explore Seasonal Influence on Safety of Substation Grounding with Free Download of Seminar Report and PPT in PDF and DOC Format. While the collector substation shares a resemblance to the distributor substation, its power flow works in the opposite direction, collecting energy and feeding a transmission grid. 3-Phase distribution line switch disconnection with incorporated Electronic Sectionaliser. System Earthing is the earthing associated with current carrying conductor & is essential for the security of the system. The digital substation starts with IEC 61850 "Communication networks and systems in substations". A quick reference guide to grounding procedure contained in this FIST is presented in flow chart format in. 15 kg/m3 at atmospheric pressure. The design of the entire substation was made keeping in mind the most basic requirements of a proper substation including the civil and domestic requirements. 7GW of renewable energy capacity was added in Australia (46% of this was solar), while 1. CHRISTODOULOU 2, VASILIKI VITA 1,2, LAMBROS EKONOMOU1,2 1Department of Electrical and Electronic Engineering, City, University London,. Regulation 8(1) requires Distributors to connect their ns to earth and ensure etwork they remain connected to earth, so far as reasonably practicable, during fault conditions. Looking for any other voltage system, means every things has got to be developed namely traction power supply system, Over Head Equipment, vehicle traction system etc. Meanwhile, in order to minimize the required substation area and enhance the aesthetic look of the substation construction, gas-insulated substations (GIS) are widely used, mainly in urban city nowadays. As the condition of grounding components change over time due to corrosion of earth. School of Mines Golden, Colorado (303) 384-2020 [email protected] Earthing of Transformer Neutrals - Hi, I've recently got involved with power plant and substation after many years in building services and rail. Flood plains and wetlands are avoided. Personnel Protection Most company policies require you to notify the dispatch center or substation owner before entering and leaving a substation, which is a good industry practice for several reasons. These conditions result in a decrease in the surface-to-surface contact area with an associated increase in surface-to-surface contact resistance, ultimately causing excessive heating at the junction. INTRODUCTION A substation is a part of an electrical generation, trans-mission, and distribution system. FOREWORD 0. View and Download PowerPoint Presentations on Electrical Earthing PPT. 25 kV Single Phase is the most preferred and universally accepted voltage standard for overhead traction system. To examine the performance of the earthing system of a AIS or GIS substation which parameter is more important: Resistance or impedance? What is the difference between the AIS and GIS substation ? On what basis or standards a Primary substation building can be legally waved off from local civil defense scrutiny /review and approval?. Each phase earth shall be replaced before a second phase earth is removed. It will therefore be worthwhile to. • Equipment grounding refers to connecting the non-current carrying metallic parts to earth (motor body, switch gear, transformer) to ensure safety against damage, fire, etc. ETAP Model For Earth Mat Design Proceedings of International Academic Conference on Electrical, Electronics and Computer Engineering, 8th Sept. Electrical Substation Now days the electrical power demand is increasing very rapidly. Earth electrodes other than those used for the earthing of the fence itself, should. Neutrals, however, play a major role in effective grounding. Short Circuit Current Calculations Introduction Several sections of the National Electrical Code® relate to proper overcurrent pro-tection. 0 or RG>=99. switchyards and substations, and transmission lines. Step-up Transmission Substation: Receives electric power from a nearby generating facility and uses a large power transformer to increase the voltage for transmission to distant locations. Temporary earths shall in any case be applied to all phases on the busbar at the point of work. and contractors with a comprehensive source for BMPs related to earth disturbing activities during construction, repair, and maintenance work associated with transmission lines, substations, and other cooperative projects. Humans are more conductive than the earth (the ground we stand on) which means if there is no other easy path, electricity will try to flow through our bodies. Literally, electricity in buildings flows from a power source to the earth. For power to be useful in a home or business, it comes off the transmission grid and is stepped-down to the distribution grid. All requests from this address have temporarily been blocked. • Bottom line, we offer over 4 million professionally designed PowerPoint templates - far more than anyone else in the world - that are available for your immediate download and use 24/7! • They can be purchased individually for a very low price. We use cookies to ensure we give you the best experience on our website. Finally, all power transformers greater than 2. The station may consist of transformers, switches, circuit breakers and other auxilliary equipment. In medium voltage substations as a rule of thumb, anything up to 40cm between phases or phase and ground is considered vulnerable to bridging by wildlife.