Jul 07, 2018 switchyard equipments, switchyard in hindi, switchyard single line diagram, switchyard construction, switchyard protection, switchyard maintenance, switchyard animation, switchyard in thermal and. Turnkey 400 kv 220 kv greenfield substation with 5 bays at 400 kv and 7 bays at 220 kv with 2 nos. Technical specification construction of 3311 kv primary. Electrical works 400 kv substation chapter7 400 kv substation 1.
Substations design of substations to be based on the following xii. The measurements were carried at ten locations around the statcom value building. Technical specification construction of 3311 kv primary sub. Why in transmission substations 400kv is not directly. Pdf maintenance and operation of an electrical substation.
By this we get to know about the operation of different equipments in switch yard and its maintainance. The rating of 400 kv hcb shall be considered as indicated in schedule a or boq of respective tender. In case of partial blackout of region with survival of kothatudem 5th stage of ap genco request ap ldcioccsrldcpgcil to change. Substation and switchyard both are different and these two switchyard is the inter connector between generation and transmission, and same voltage is mentained in switchyard, substation is the inter connector between transmission and distribution. Chapter 7 400 kv substation free download pdf ebook. Hv substation project brief history et bihl d i 1987 f th il ti f l hv mv d established in 1987 for the realization of complex hv, mv and lv projects.
Extension of 400220 kv substation at gooty this is an existing substation owned by powergrid and shall have provision to accommodate following under this project. Pdf report on 400kv substation niraj dandge academia. Post insulators for 400kv switchyard for uprvunl p tender. It has a daily load transaction of 1600017000 mwatt. The aim of this paper is to study electric fields at a 400 kv substation to find out whether they exceed occupational exposure guidelines, 10 kvm, by international commission on nonionizing radiation protection icnirp. It is one of the important high voltage substation in maharashtra.
Dec 11, 2017 substation and switchyard both are different and these two switchyard is the inter connector between generation and transmission, and same voltage is mentained in switchyard, substation is the inter connector between transmission and distribution. An electrical substation is a part of an electricity. Besides changing the voltage, the job of the distribution substation is to isolate faults in. The siemens experts always consider the electrical parameters as well as the environmental conditions to which a. This is a sparking view when two isolators comes in contact and are closed. The input for a distribution substation is typically at least two transmission or subtransmission lines. The remaining 680 mw is fed to three 315 mva 3 x 105 mva units autotransformers working at an average 80% loading and 0. Capacity status rating status capacity status rating status 22066 kv,100 mva tfr. Aug 22, 2016 the primary function of a 400220 kv substation would be to provide a conversion of different voltage levels so that power systems can be connected together to form a power system grid. Download as pdf, 400200 kv substation 400200 kv substation design scribd. Substation design services 4002202kv gis substation. Attachment 3k sub qualifying requirements for the 400 kv.
Conclusion the overview of this project is about the various techniques involved in 400 kv switchyard of ramagundam power plant. Attachment 3k sub qualifying requirements for the 400. The 220 kv gis switchgear shall be of double bus bar design having phase wise separate or threephase common single enclosure. What is the difference between a substation and a switchyard. Power frequency electric fields at a 400 kv substation. Testing of disc insulators strings of 400 kv switc tender.
Mppgcl testing of disc insulators strings of 400 kv switchyard through pid test kit and submission of test reports with analysis at, due date. Failure of 315 mva, 400 22033 kv auto transformer at 400 kv bawana substation of dtl a. Nov 15, 20 this is a sparking view when two isolators comes in contact and are closed. The reason for 400kv being step down gradually through 2kv, 66kv and then to 33kv is because direct stepping down would mean a huge transformer at the reciever end. Placement of switchyard control room placement fire fighting pump house. Pioneer and technology leader driving gis innovations.
Distribution substations michigan technological university. Operational description of 400kv switchyard ntpc ramagundam rstps. Pdf transients due to switching of 400 kv shunt reactor. Read about company and get contact details and address. A 400 kv switchyard was near the statcom building at a distance of approximately 50 m and energized at all the time during measurement. Pgcil, new delhi 400220 kv gis substation with central. Bhel post insulators for 400kv switchyard for uprvunl panki tps extn 400 kv post insulators for 400kv switchyard for uprvunl panki, due date. Switchyard equipments, switchyard in hindi, switchyard single line diagram, switchyard construction, switchyard protection, switchyard maintenance, switchyard animation, switchyard in. Autocad format and manuals in pdf format, for offered item shall be submitted. They are renowned for highest reliability, economical operation, and low maintenance requirements. Gasinsulated highvoltage switchgear gis is a compact metal encapsulated switchgear consisting of highvoltage components such as circuitbreakers and disconnectors, which can be safely operated in confined spaces. The foundations were constructed over piles as site is located close to river bed substation commissioned in 2007.
No description of technical parameter unit data 1 nominal system voltage kv rms 33kv 2 maximum system voltage kv rms 36. Switchyard consists of four 400 kv busbars fed by 7 nos. Transients due to switching of 400 k v shunt reactor. A mini project report on operation and maintenance of 2202kv substation submitted in partial fulfillment for the award of the degree of bachelor of technology in electrical and electronics engineering submitted by v. The 400 kv switchyard of the substation had two power transformer feeders and four outgoing transmission line feeders.
For creepage distance refer to clarification number 166 of tac4 for power va rating refer to procurement document volume 2 of 2 item 6. Measurements of electric fields have increased because of public concern about their health effects. The power is received on 400 kv busbar double main and transfer bus scheme. General arrangement a designer perspective, but fine tuned at site. Automation philosophy for 400 kv asoj sub station extension of 22066kv yard a technical details of 22066kv system 1. Now a 400kv transmission line tower could be more or less something like this. Nepal electricity authority project management directorate. Distribution voltages are typically medium voltage, between 2.