Alstom-INoveYou-V-Web-H

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7 IT’S ABOUT In July 2012, India faced the largest power outage in its history – two consecutive blackouts resulting in a loss of 32 GW of generation affecting over 620 million people. In order to secure the supply of electricity to very critical areas such as hospitals, metros, airports, national authorities’ buildings, etc. in the Indian capital, Alstom has provided an innovative islanding and load shedding solution to the Delhi Transmission Company. The islanding scheme does not only provide uninterrupted power to these areas but also supplies start up power to nearby generating stations. IT’S NEW load shedding scheme at transmission level in India. This innovation is an adaptable solution based on frequency relays to meet local complex and stringent guidelines. The survival of an island depends on the successful operation of a 2,100 MW load shedding scheme. This task is done using the rate of change of frequency element (df/dt) of Alstom relays. Intelligent Electronic Devices (IED) implemented to improve the resetting time of df/dt making the IED stable against sudden voltage changes. Alstom DS Agile System is installed for control 48 grid substations and four virtual power islands managing a total of 5,000 MW. IT WORKS On 30 May 2014, Delhi was hit by a big thunderstorm which caused a “real-life” test, with the tripping of 68 transmission lines in the Indian northern grid and a total loss of 8,000 MW, including 4,000 MW for Delhi alone- a perfect recipe for a blackout. The system survived thanks to the successful operation of the islanding scheme. “INNOVATIVE SOLUTIONS IN ISLANDING AND LOAD SHEDDING ARE PUTTING ALSTOM AHEAD OF THE COMPETITION AS A TECHNOLOGY LEADER; GUARDING INDIA’S CAPITAL FROM POTENTIAL DARKNESS” Tilwani Nagesh, Regional Managing Director, Grid Substation Automation Solutions IT’S SUSTAINABLE TEAM GRID – SUBSTATION AUTOMATION SOLUTIONS BLACKOUT PREVENTION FOR THE INDIAN GRID GOLD INDIA INNOVATIVE PROCESSES The solution has allowed Alstom to win projects in India worth 563 K€ with additional 1.5 M€ ORDERS TO COME The successful implementation of the algorithm and scheme has other state transmission utilities (KPTCL, TNEB, UPPTCL, etc.). It has now become a reference and a true differentiator for Alstom in the Indian market.

Transcript of Alstom-INoveYou-V-Web-H

Page 1: Alstom-INoveYou-V-Web-H

7

IT’S

AB

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20

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