400 kv switchyard maintenance software

Maintenance free gas insulated switchgear substation automation system with iec 61850 compliance. Why in transmission substations 400kv is not directly. Switchyard substation upto 400kv have generally been installed in the country. Nihar sahoo operations and maintenance 400 kv switchyatd. Ehv substation layouts for busbar systems up to 400 kv eep. It also is used to change ac voltages from one level to another, andor change alternating current to direct current or direct current to alternating current.

Siemens has proven to be a reliable, trustworthy supplier of highvoltage substations for all voltage levels and for all applications from basic substations with a single busbar to interconnection substations with multiple busbars or a breakerandahalf arrangement for up to 800 kv, 8,000 a, and shortcircuit currents of up to 100 ka. A 400kv gis substation will connect the cables from anneberg, feed the. Substations design of substations to be based on the following xii. Tsk, winner of the quality innovation award for the sisdron project. Substation tenders online latest info about substation. They connect different parts of a grid and are a source for subtransmission lines or distribution lines. These breakers are connected on two buses,main busi and busii.

The voice signal is convertedcompressed into the 300 hz to 4000 hz range. Wood county electric cooperative invests in an asset management software. Part i deals with preventative maintenance of substation. Jun 20, 2018 single line diagram33kv11kv substation this is the easy way to understand the working of substation. Maintenance of 220 kv and 400 kv voltage substations grupo cobra. Switchyard main bus sizing in one and half breaker scheme. Siemens has proven to be a reliable, trustworthy supplier of highvoltage substations for all voltage levels and for all applications from basic substations with a single busbar to interconnection substations with multiple busbars or a breakerandahalf arrangement for up. Pgcil, new delhi 400220 kv gis substation with central.

Why two main buses and one transfer bus scheme not using for. Stepdown transmission substations are located at switching points in an electrical grid. Maintenance of 2 kv switchgear volt insulator electricity. This implies exposure for high magnetic fields, sometimes over 100 t due to high currents in big reactance coils. Isolators can not be operated when circuit is energized. Why two main buses and one transfer bus scheme not using for 400kv switchyard answer rishi first of all who told u that main and transfer bus is not used in 400 kv. Communication plcc is mainly used for telecommunication, teleprotection and telemonitoring between electrical substations through power lines at high voltages, such as 110 kv, 220 kv, 400 kv. Manual for transmission lines and substation construction and. Chapter 7 400 kv substation free download pdf ebook. Highvoltage substations highvoltage power transmission. It is used to switch generators, equipment, and circuits or lines in and out of a system. Apply to 2906 400kv switchyard substation electrical installation jobs on, indias no. The 400 kv to 33 kv transformer would be impractical because of the following reason. In general, the work consists of cleaning equipment, replacement of insulation and substation lightning conductors, changing transformer buses and other.

Dangerous contact currents induced by electrical field in. Federal and state environmental permit information was also included in this document for reference. Electrical works 400 kv substation chapter7 400 kv substation 1. A 400 kv switchyard is located at a distance of 50 m approximately from the statcom valve. Early electrical substations required manual switching or adjustment of.

Explore 400kv switchyard substation electrical installation openings in your desired locations now. View swaroop mohapatras profile on linkedin, the worlds largest professional community. 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. Maintenance and troubleshooting done of 220 kv switchyard and 400 kv switchyard. I have done some modification works for improve the systems. Single line diagram 33kv11kv substation in hindi youtube. The topology of the 400120 kv substation showing instantaneous voltages. Alpesh prajapati senior manager electrical reliance. Engineering and supply four transformer positions 40033 kv 150mva and two line positions, double bar by gis technology location. By this we get to know about the operation of different equipments in switch yard and its maintainance. The switchyard is located approximately 850 feet southwest of the right abutment of the dam, and approximately 170 feet higher than the top of the dam. The new transmission circuit extends from teps tortolita substation to the saguaro switchyard and parallels an existing 500 kv line. Service transformers, unit auxiliary transformers and other auxiliary transformers.

Substations a substation is a highvoltage electric system facility. Aug 09, 2015 400 kv switchyard of ramagundam super thermal power station is the most vital switching station in the southern grid. Maintenance free gas insulated switchgear 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 kv greenfield substation with 5 bays at 400 kv and 7 bays at 220 kv. Switching transients in 400 kv transmission network due to circuit breaker failure. In a recent trends, the power stations have 200 400 kv outgoing line arranged in a one and half scheme breakers. Design guide for rural substations usda rural development. Ehv substation layouts for busbar systems up to 400 kv. Design of substation lighting in dialux software replacing. Manual for transmission lines and substation construction. The foundations were constructed over piles as site is located close to river bed. Distribution substations are usually characterized by voltages up to 230 kv on the primary side and on the low side the voltages are typically, 12. Power transmission line towers from 11 kv to 220 kv switchyardsubstation structures from 11 kv to 400 kv radio and telecommunication towers. Switching transients in 400 kv transmission network due to.

Extension of 400220 kv gis substation at yelahanka. Explore 400kv switchyard substation electrical installation openings in. Why in transmission substations 400kv is not directly stepped. Single line diagram33kv11kv substation this is the easy way to understand the working of substation.

Distribution voltages are typically medium voltage, between 2. A substation is a part of an electrical generation, transmission, and distribution system. Engineering and supply four transformer positions 400 33 kv 150mva and two line positions, double bar by gis technology. Indoor voltage in kv phase to earth in mm phase to phase in mm 0. The hardwaresoftware environment of the whole system is the following. 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. Why two main buses and one transfer bus scheme not using.

Unitech is a leading iraqi company specialized basically in power and oil projects. The rating of 400 kv hcb shall be considered as indicated in. Isolators 220 kv and 400 kv to motors and transducers. Swaroop mohapatra hardware development engineer apple. Electrical clearance in substation electrical notes. Of 2 kv switchgear components of 2 kv switchyard isolators current transformer potential transformer surge arrestor transformer insulators busbars relay and control panel 2 kv isolators isolators are designed to open a circuit under no load. Switchyard 765 kv 400 kv 220 kv 2 kv generator transformers. Isolating switches are used to isolate equipment for maintenance. Design of substation lighting in dialux software replacing conventional lights with led flood light in a switchyard sharma ajay g1 deepa karvat2 1 pg student 2asst. Pdf reliability evaluation of a 233 kv hv substation. Very little maintenance, powerful performance and allround protection makes this series a value for money. Nihar sahoo senior software engineer at vision india. The management decided that together with this reconstruction of the operator. This manual gives the basic requirement, and, for the sake of illustration, contains typical.

Download citation strategic maintenance of 400kv switching substations this. Nov 30, 2014 3d substation design and modelling, south africa. Chapter8 switchyard equipment hv bus bars, switchyard. This bulletin is an update and revision of previous rea bulletin 651, design guide for rural substations revised june 1978. Let us for illustration consider a single phase core type 400 kv 33 kv transformer. The fill for embankment ranges up to 27 feet in depth and the cut for excavation ranges up to 24 feet in depth. The air compressors and water cooling systems are installed around the building for the heat dissipation of the statcom units. Preventive maintenance and troubleshooting done of boiler aux. Proper design, construction and maintenance of our substations and the equipment. When inspections of the 400 kv switchyard in stenkullen are performed, the checklist includes a visit to a big threephase transformer used for reactive and inductive power distribution, see figure 1. Operational description of 400kv switchyard ntpc ramagundam rstps. A case study on analysis of insufficient lighting in. These practices and procedures, when properly implemented, will minimize or prevent erosion and sediment pollution from adversely affecting sensitive resources, such as, streams, ponds, lakes, wetlands, and natural vegetative. Strategic maintenance of 400kv switching substations.

Conclusion the overview of this project is about the various techniques involved in 400 kv switchyard of ramagundam power plant. Meaning there are 3 breakers per two outgoing lines i. Aug 05, 2016 the 400 kv to 33 kv transformer would be impractical because of the following reason. Intelligent application at the 400120 kv substation of the paks. Requirements were specified for 400kv mosciska substation in warsaw. In this work, the data of outages are collected for high voltage substation equipments of 233 kv nirjuli substation a remote location of arunachal pradesh and the reliability of the overall. Dangerous contact currents induced by electrical field in 400. The availability willis 2000 can be defined as the fraction of time that the electric power is available in a certain point in the network during a given time interval. Every substation is controlled by some experienced manpower, including one in charge,23 engineers, 45 technical staffs. Eci performed complete physical and electrical design at saguaro for the new 500 kv line termination in a breakerandonehalf configuration.