| 词条 | Vizag back-to-back HVDC converter station | ||||
| 释义 |
| name = Vizag back-to-back HVDC converter station | photo = | caption = | map = | map_caption = Location of Vizag back-to-back HVDC converter station| country = India | state = Andhra Pradesh | province = | coordinates = {{Coord|17|38|33|N|83|07|57|E|type:landmark|name=Vizag Back to Back HVDC Station – Vizag 1}} {{Coord|17|38|26|N|83|08|10|E|type:landmark|name= Vizag Back to Back HVDC Station – Vizag 2}} | lat = | long = | direction = | start = Eastern Region | through = | finish = Southern Region | par = | owner = Power Grid Corporation of India | partners = | operator = | cable_manufacturer = | cable_installer = | cable_layer = | substation_manufacturer= | substation_installer= Alstom (Vizag 1), ABB (Vizag 2) | contractors = | construction = | expected = | est = 1999, 2005 | decom = | type = Back to Back | current_type = HVDC | length_km = 0 | capacity = 2 x 500 MW | AC_voltage = | DC_voltage = 205 kV (Vizag 1); 176 kV (Vizag 2) | poles_no = 2 | circuits_no = }} The Vizag back-to-back HVDC station, or Visakhapatnam back-to-back HVDC station, is a back-to-back HVDC connection between the eastern and southern regions in India, located close to the city of Visakhapatnam, and owned by Power Grid Corporation of India. It consists of two independent poles, each with a nominal power transmission rating of 500 MW, referred to as Vizag 1 and Vizag 2. Vizag 1 was built by Alstom between 1996 and 1999 and has nominal DC voltage and current ratings of 205 kV, 2475 A. Its design is very similar to that of the Chandrapur back-to-back HVDC converter station. Vizag 2 was built by ABB between 2002 and 2005 and has nominal DC voltage and current ratings of 176 kV, 2841 A. Both Vizag 1 and Vizag 2 use air-insulated, water-cooled thyristor valves. On 31 December 2013, the Northern, Eastern and Western grids were synchronised with the Southern regional grid, creating a single synchronous AC grid over the whole of India.[1] As a result, the converter station is no longer required for its original purpose of asynchronously linking the Eastern and Southern grids, although it can still be used as an embedded power flow device to help control power flow within the AC system. The stations could potentially be dismantled and moved to elsewhere to export/import power from other countries. Sometimes the excess power fed to the southern grid by this HVDC link is flowing back to Western region through the 765 KV AC lines between Southern grid and the Western grid which is not desired.{{citation needed|date=November 2015}} Sites
See also
References1. ^One Nation – One Grid, Powergrid website (retrieved 18 November 2015). External links{{GeoGroupTemplate}}
4 : Electric power transmission infrastructure in India|Economy of Visakhapatnam|Converter stations|Energy in Andhra Pradesh |
||||
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。