765 kv substation layout pdf

Using the two 2d analyses carried out in two different planes and superposing them, the 3d efield results with. Design,supply,manufacturing,erection, te sting and. Providing turnkey execution of ehv substations upto 765 kv with leadingedge products, systems and turnkey solutions, backed by comprehensive range of services from concept to commissioning for last two decades. Transmission and distribution electric field exposure in. Using the existing layout of this substation, the e. Transmission and distribution electric field exposure in a. The standard instruction for construction of 3311 kv substation is given in rec standards which specifies the layout along with the switchgear. The station may consist of transformers, switches, circuit breakers and other auxilliary equipment. The stepdown substation can change the transmission voltage to a subtransmission voltage, usually 69 kv. The main function of the substation is to collect the energy transmitted at high.

Design guide for rural substations usda rural development. Substation substation a station in the power transmission system at which. Existing and proposed single line diagram for 3311 kv. Efield computation is done using femm, a freeware, finite element method based software 2527. Section 2, in addressing the rapid restoration of electrical service, provides a broad. Pgcil, new delhi 400220 kv gis substation with central. Pdf measurement of electric fields around a kv uhv.

The bays in 765 kv substation being 14 m, nearest to the ground, their contribution to efield is highest. Ehv 765 kv substation in india for an actual layout plan which is under construction. Home our company sustainable development environmental impact assessments kappa 765 400kv substation environmental impact assessments currently selected libraries. The design is based on the basic parameters of the equipment used in an ehv substation 4, 5. Single line diagram of 11kv substation substation provides the energy supply for the local area in which the line is located. Substation layout equipments of ehv substations at voltage levels of 2 kv, 220 kv, 400 kv and 765 kv. To make way for the convention center this 66 kv substation had to be relocated. In 2018, the utility sought to modify the layout of this substation for more effective operation.

Common voltage classes used in the united states for major substations include 69, 115, 8, 161, and 230 kv considered high voltage or hv class and 345,500, and 765. Substation substation a station in the power transmission system at which electric power is transformed to a conveniently used form. The subtransmission voltage lines can then serve as a source to distribution substations. This is showing three of the five 220 kv 66 kv transformers, as well as highvoltage transformer fire barriers, each with a capacity of 150 mva. A typical ehv ac substation has following essential features. Specifically, a 765 kv line can reliably transmit 22002400 mw i. Hence two set of numerical experiments were carried out.

The standard layout guides for the general arrangement of the equipments, structures, busbars etc. For these reasons, the use of transmission voltages as high as 765 kv has occurred. Technical specification construction of 3311 kv primary sub. The outdoor substations are mainly classified into two types, namely polemounted substation and foundationmounted substations.

The design is based on the basic parameters of the. Substation layout substation layout single line diagram check. Transmission voltages typically range from 8 to 765. Given two types of substation configurations, determine. Oct 07, 2014 the standard instruction for construction of 3311 kv substation is given in rec standards which specifies the layout along with the switchgear. Distribution at 6 600, 200 and 22 000 volts is used for longer distances and larger blocks. No description of technical parameter unit data 1 nominal system voltage kv rms 33kv 2 maximum system voltage kv rms 36. The layout and the three 765 kv lines feeding the substation are visible. Usually, power is transferred on transmission lines at a very high voltage in order to reduce energy losses along the way the higher the voltage, the lower the losses. The approved new extra high voltage ehv substations 765 kv and 400 kv will be based on a breakerandahalf substation design. This substation is constructed using steel lattice structures to support strain bus wires and apparatus.

The ergon energy design philosophy is to provide substations. Wellequipped design, engineering and execution team to cater substation projects upto 765 kv in short term. Using the existing layout of this substation, the efields at 2 m. In the construction manual or technical specifications prepared by the project. Numbers of breakers, disconnect switches, transformers, auxiliaries, protective devices, lines and other equipment. The substation design manual is not intended to replace asset management standards, but rather to act as a reference document that crossreferences existing standards and process documentation and. Eskom is in the process of strengthening the transmission corridor between the north and south of south africa by constructing a new 765 kv backbone to meet the challenge of increased electricity demand. Table 1 compares the electric field levels calculated at 1,7 m above ground for the two phase configurations 1 and 2 fig. The approved new extra high voltage ehv substations 765. Power system fundamentals transmission facilities pjm2014 090920.

Associated with this upgrade, new generation protective relay schemes for transmission lines both line impedance and line differential, transformers, reactors and busbars will be implemented. Stages of power substation project design, construction and related. Pspdsubstation layout explanation free download as powerpoint presentation. Single line diagram 33kv11kv substation in hindi youtube. Such type of substation requires less time for construction but uses more space. Short circuit and current capacity of equipment, bus and other equipment compliance with projects scope and requirements number of feeders and load circuits. Keeping that in mind, a suitable load flow analysis is done based on the standard 765 kv substation. Using the existing layout of this substation, the efields at 2 m height above the ground plane are computed using femm a free ware. Consultancy for 765 kv system of uttar pradesh power corp.

Outdoor substation a substation which is used for all voltage levels between 55 kv to 765 kv is called outdoor substation. Background the construction of the new substation was the first step on the critical path of the convention center. Substation automation system with iec 61850 compliance high system availability with redundancy guaranteed system openness for future expansion and integration abb solution turnkey 400 kv 220. Pdf single line diagram of substations pankaj choudhary. No description of technical parameter unit data 1 nominal system voltage kv. Most of comeds 765 kv lines terminate in the expansive yard of the wilton center substation, located south of chicago, illinois, u. Assistance for the following transmission lines and associated substations. Substation design volume ii physical layout instructor. It is used to switch generators, equipment, and circuits or lines in and out of a system. Electrical layout plan elp while planning the layout and orientation of an ehv substation in order to avoid right of way. Design,supply,manufacturing,erection, te 211 kv substation with sas at i. The substation design manual is not intended to replace asset management standards, but rather to act as a reference document that crossreferences existing standards and process documentation and plugs any gaps where asset management documentation does not exist. Using the sil concept, three 500 kv or six 345 kv circuits would be required to achieve the loadability of a single 765 kv line. Distribution any substation that is used to transform electrical energy to a potential that is low enough for general distribution and utilization is a distributing substation for local dist, 2 400.

Wellequipped design, engineering and execution team to cater substation projects upto 765. Transmission system substations that provide bulk power operate at voltages from 69 to 765 kv. Eskoms existing substation layouts are based on double busbar arrangements. Major grid substations of powergrid government of india. Jun 20, 2018 single line diagram33kv11kv substation this is the easy way to understand the working of substation. Substations a substation is a highvoltage electric system facility. The main function of the substation is to collect the energy transmitted at high voltage from the generating station and then reduce the voltage to an appropriate value for local distribution and gives facilities for switching. For higher unit sizes of 660 800mw, 765kv level switchyards substations are also. Substations transform voltage from high to low, or the reverse, or perform any of several other important functions. Jul 31, 2015 distribution any substation that is used to transform electrical energy to a potential that is low enough for general distribution and utilization is a distributing substation for local dist, 2 400 volts has been recognized as a standard voltage. A substation is a part of an electrical generation, transmission, and distribution system. Measurement of electric fields around a kv uhv substation article pdf available in ieee transactions on power delivery 284. Single line diagram33kv11kv substation this is the easy way to understand the working of substation.

One purpose of a substation is to contain the equipment for changing electric energy from. Chapter8 switchyard equipment hv bus bars, switchyard. Substation types stepup transmission substation the threephase power enters a transmission substation at the power plant transformers step up to extremely high voltages for longdistance transmission voltages for long distance transmission range from 155 kv 765 kv. Lightning impulse insulation levels bil for systems 765 kv and below.

Design parameters and standard layout of a 3311 kv substation. Keeping this in view results of a case study of electric field distribution in an upcoming 765 kv substation in india are computed and discussed in this paper. Handbook on construction techniques asian development bank. A circuit breaker may be rated as 765 kv maximum voltage, 3 ka.