Inspection and Maintenance of Henan UHV substation

If the urban distribution network is a stream, then the UHV network is a great river, providing sufficient energy guarantee for Henan's economic and social development. In daily life, a person who works for a long time needs to go to the hospital for physical examination, and the UHV substation is the same, every year to accept the comprehensive physical examination of the power doctor.

（ZhongZhou Substation）

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• The maintenance work is meticulous!

Commutator square operation area

• Main transformer operation area

• Equipment cleaning operation

On May 1 after 11 days of efforts, the UHV Nanyang Station, Zhongzhou converter station, Henan Transformer Station and related lines operated and maintained by State Grid Henan Electric Power Company completed the annual overhaul work successfully, marking the company's "five stations and twenty-two lines" annual overhaul of the first phase of the task ended smoothly.

• Capacitor equipment measurement

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• Valve hall casing operation

• Ac filter field circuit breaker test

The centralized overhaul lasted 11 days, and more than 2,600 personnel were put into the overhaul. 165 overhaul tasks were completed at the three stations, 6575 equipment (sets) were repaired, 117 new and left defects were eliminated, 13 key hidden dangers such as 1000 kV GOE casing hanging inspection at Nanyang Station were found to be zero, and 27,000 switching operations were completed without error. Complete maintenance tasks of 10 three-station related supporting lines.

• Dc field reactor maintenance

• Ac filter field circuit breaker relay verification

• Isolation switch secondary loop detection

    At present, the power grid is about to enter the critical period of meeting the peak of summer flood control, and the UHV will also face the severe test of long period and heavy load operation. Henan Electric Power will uphold the maintenance concept of "required repair, required repair, required test, required test", and do the maintenance work of UHV Lingbao Station, South Henan converter station and related lines in the next stage according to the node plan. To ensure the longterm safe and stable operation of the "major artery" of foreign power flow into Henan, escort the safe and stable operation of Henan power grid.