The power factor is corrected here and the voltage is stepped down to 33kv and power is then transferred to distribution system of the grid to meet the requirements of the end consumers at their suitable voltage. Power grid corporation of india ltd section 1 contractor. Rahi1, 2abhas kumar singh, shashi kant gupta3, shilpa goyal4 electrical engineering department, national institute of technology, hamirpur, india1,2,3,4 abstract this paper presents the design of earthing system for 2 kv substations and simulation for. Iee of new 2kv grid station along with associated tl at dha phase7 dera chahal lesco page 1 1.
The most appropriate site for the new bsp substation was identified adjacent to an underground station. This 2kv circuit is made up of two types of ohl conductors. Comparative analysis of 2kv grid stations from distributed generation perspective anis ur rehman, muhammad iftikhar khan, khadim ullah jan. The iee is, therefore is not based on line design which is final barring any. Abstractpakistan is facing severe power crisis where power demand is greater than the total generated power. Abbs dcb substations is a marketing app for clearly and easily showing the advantages of a substation equipped with disconnecting circuit breakers in comparison to substations equipped with conventional circuit breakers and disconnectors. Aug 02, 20 social media also provides another avenue to get information on how to come up with the best 2 kv substation design. Pcb double circuit 2kv overhead line extends to the east from pelham to bramford, teeing off to cliff quay grid and lawford 2kv switching station. The project saw abb replace a substation with brand new stateoftheart gas insulated switchgear gis technology.
Performance evaluation of 2kv grid stations and transmission lines in peshawar division. Earthing design simple overview earthing design is a complex, iterative, process. Instrument transformers are designed to provide reliable performance in accordance with latest stringent global design standards like iec and ieeeansi. Karachi has a wide network of power transmission but the standards and conditions of the power. Aug 14, 2016 a short overview of a typical grid station is given, i hope it will help, and will build an idea how these substations work. A design layout of 2 33 kv, 200 mw sub station the sub station is connected with three substations or load viz. Analyses and monitoring of 2 kv grid using etap software.
Earthing mat design for a power substation ms excel. Duration of fault current for sizing ground conductor t c. These power generating stations may be hydroelectric, thermal or atomic. National grid substations technical specification ngts 2. Design drawings national grid hinkley point c connection project order a110181 churchill 2kv substation site plan ordnance survey. An electrical substation is a combination of a number of major electrical equipments like power transformers, circuit breakers, instruments transformers, bus bars, lightning arresters, control panels, interconnecting cables, capacitor banks, battery set, and other related equipments designed as per the requirements, size, capacity and class of the substation. Northern powergrid is the electricity distribution business responsible for delivering electricity safely and reliably to 3. The load connected with the system is industrial load, offices load, plazas, shops and domestic load.
To better understand the importance of electrical substations, lets start with a discussion about the structure of the power systems and their main components. To make way for the convention center this 66kv substation had to be relocated. Oct 01, 2015 2 kv grid station intern ship training report 1. This will also enable to get views of different professionals. Single line diagram of 233 kv grid sub station bettiah 2 kv transfer bus 2 kv main bus 33 kv main bus 20 mva abb make tr. It houses 22 bays of abbs stateoftheart elk04 gis, comprising four bays of bus couplers and bus sections, four incoming bays that connect to the supergrid transformers at the adjacent 400 kv national grid substation and 14 feeder circuits. The performance of grids and transmission lines were estimated by statistical data analysis for summer season with peak loads. Some designs achieve minimum emf emission by installing the low voltage cables and switchboard in a trench down the middle of the room. The incoming voltage level for this substation is 220kv. Length of area, occupied by earthing grid, width of area occupied by earthing grid, fault level. The environmental assessment requirements of the gop for grid stations and power. Wymondley gsp is equipped with 2x240mva 4002kv sgt and supplies wymondley grid 2x90mva and letchworth grid 2x90mva. Define the initial conditions fault level, metallic return paths, 2. Earthing design of 11kv and 33kv rural substations in the uk.
Design of earthing system for 400 kv ac substation. Project reference client brief project details 1 design consultancy and supervision services for power supply to sultans special force. Learn more henan 500kilovolt power grid 3d digitized and integrated operations platform. Abbs largest ever 2 kv gis installation in the uk substations new compact gas insulated switchgear gis built within the existing footprint of a timeserved outdoor air insulated switchgear ais substation. The following layout designs of indoor distribution substation are typical only and should not be used as construction drawings as they are presented as an example. Netracon technologies an internationally acclaimed. Technical specification construction of 3311 kv primary sub. Grid map of karnataka state 765 kv, 400kv and 220 kv. About us we believe everything in the internet must be free. Complete design,engineering and consultancy services for 233 kv,2x50 mva ab zone substation 7x2 kv bays,12x33 kv bays, 11 kv7 panel swbd. Modelling 2 kv substation for surge arrester studies. Our project is to design a 2kv33kv ehv substation where the incoming power is received at 2 kv from a generating station.
Power system structure the typical power system structure is shown in fig. Through the fan page discussions, you can learn more about this simple procedure of design. It covers planning and amenity issues, both with regard to national grids approach to siting new. Section 3 is the simulation of single line diagram of 220 kv substation in etap based upon practical data. Maximum voltages at differe nt lightning currents for case 2.
The construction of 2kv jacobabadii grid station and transmission line subproject has been proposed by hyderabad electric supply company hesco to provide additional power supply to the jacobabad city and nearby towns. A design layout of 233 kv, 200 mw substation the substation is connected with three substations or load viz. Mansehra gs, a 765500 kv ais grid station will be constructed on 158 acres of land at. The substation layout drawings and data presented in the app are to be considered as approximations. It covers planning and amenity issues, both with regard to national grids approach to siting new equipment, and to development proposals near overhead lines and substations. Project reference client brief project details 1 design consultancy and supervision services for power supply to sultans special force camp at haima in alwusta governorate.
The board of tstransco accorded approval for implementing the above ssr 201415 in tstransco. This paper presents a comparative performance evaluation of all 2 kv grid stations and 2kv short. This paper presents the design of earthing system for 2 kv substations and simulation for calculation of required parameters. Internship report of 2 kv grid station free download as pdf file. Kenya power transmission system improvement project lot 3233 kv substations and switching stations volume 2 section vi employers requirements. Summary of unbalance measurements in sia grid station 2 kv. Substation grid stations substation is an intermediate switching, transforming or converting station between the generating station and the low tension distribution network situated generally the consumers load centre. Planning and amenity aspects of high voltage electricity transmission lines and substations. The automated process ensured any design revisions were reflected in the reports. For fulfilling these huge power demands the modern time requires creation of bigger and bigger power generating stations. Part 3 c ode of practice for the design of industrial type stairs, permanent ladders and walkways.
The need in march 20, abb put the final finishing touches to a major. Design input data description notation unit symmetrical fault current in. Design input data description notation unit symmetrical fault current in substation i g a duration of shock for determining allowable body current t s sec. This ensures a product with less maintenance, low weight, flexible mounting facilities, high reliability. Electrical substation now days the electrical power demand is increasing very rapidly. Social media also provides another avenue to get information on how to come up with the best 2 kv substation design. Grids electricity transmission lines and substations. Construction of 2 kv jacobabad ii grid station and transmission line subproject 6 executive summary 1. This document is the initial environmental examination iee for the construction of new 2kv grid station along with associated transmission line at dha phase7. Asian development bank pakistan power distribution. Hv and lv earths can be combined if the grid impedance is less than 1 ohm. During the design phase, various voltage levels for the proposed dtl were also. Depending upon the availability of resources these stations are constructed.
Design parameters and standard layout of a 3311 kv substation. Electrical power substation engineering and layout. Eia of hybrid grid stations at azizabad and jail road with. Pdf modelling 2 kv substation for surge arrester studies. No description of technical parameter unit data 1 nominal system voltage kv rms 33kv 2 maximum system voltage kv rms 36. Grid station substation is an assembly of apparatus, which transform the characteristics of electrical energy from one form to another. Load flow analysis of 2 11 kv distribution sub station using static var compensator for voltage enhancement a case study article pdf available november 2009 with 1,792 reads how we. The project work assigned to us was to design a 233 kv ehv substation. Pdf improved lightning protection on 2 kv transmission line. Overall, isat saw a 60% reduction in design revisions, a 40% reduction in total design time, a savings of 20 mandays in design and quantity estimation, and major cost savings from eliminating construction change orders. Fundamentals of modern electrical substations part 1. Grid station substation is an assembly of apparatus, which transform the characteristics of electrical energy from one form to another, say from one voltage level to another level, hence a. Section 4 is the load flow analysis of the substation.
Ab kadir et al modelling 2 kv substation for surge arrester studies published by the berkeley electronic press, 2008 table 4. Bs 7354 code of practice for design of highvoltage openterminal substations. Competitive bids are invited for providing consultancy services for design and supervision for the upgradation of the nizwa grid station gs to 220 kv, construction of 220 kv new izkinizwa transmission line and addition of a 500 mva, 400220 kv transformer at the new izki gs. Restricted site the new bsp is designed to take electricity from a nearby national grid 4002 kv substation constructed by abb in 2004 and step it down through transformation 22211kv to feed into the lu power supply system. Description this is internship report of 2 kv grid station. Report internship report of 2 kv grid station please fill this form, we will try to respond as soon as possible. Load flow analysis of 2 11 kv distribution sub station using static var compensator for voltage enhancement a case study. Scribd is the worlds largest social reading and publishing site. Design of earthing system for 400 kv ac substation a case study. Contents this document provides information for planning authorities and developers on national grids electricity transmission lines and substations.
Grid station along with associated transmission line at dha phase7 dera chahal subproject is a category b subproject, as the grid station site does not have any environmentally sensitive receptor. Maintenance and operation of an electrical substation of 220233 kv. Redesign and installation of 220 kv line march, 2020. Who we are and what we do 3 overhead lines and substations 5 consent procedures 6 amenity responsibilities 7. Substations involves many earthlings through individual electrodes, which will have fairly high resistance. Design of earthing system for 400 kv ac substation a case.
Environmental quality standards, neqs protection and quality regulations 1990, 1996. This paper is to provide information pertinent to safe earthing practices in ac substation design and to establish the safe limits of potential difference under normal and. Could u please explain me how to do the earth mat design for 220233 kv outdoor gss which have 5 steps 5m. The project consists of addition of 2 kv grid having capacity of 80 mva in new karachi. New bsp substation will provide essential power boost for. Energypac has been manufacturing reliable instrument transformers for more than 30 years. The different methodologies adopted for grounding grid design but we adopt universal method as per ieee. Background the construction of the new substation was the first step on the critical path of the convention center. Pdf load flow analysis of 2 11 kv distribution sub. This paper presents a comparative performance evaluation of all 2 kv grid stations and 2kv short transmission lines in peshawar division.
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