Shulou(Shulou.com)11/24 Report--

CTOnews.com, November 16, according to CNNC, Haiyang Nuclear Power Plant Units 1 and 2 reached full power operation after completing the reliability improvement project test of the main pump inverter "four uses and one standby" last week, which marked the completion of the construction task of the Haiyang Nuclear Power Unit 1 and 2 main pump inverter "four uses and one standby" project built by China Nuclear Power Corp. six months ahead of schedule.

According to reports, the main pump frequency converter is the key single point failure electrical equipment of the third generation passive pressurized water reactor nuclear power plant AP1000, which provides the main pump with the functions of frequency voltage conversion and limiting the starting current of the main pump, and is the only power supply for the main pump.

Each unit is equipped with four main pumps and four main pump inverters. If any one of the main pump inverters fails unexpectedly, the reactor low flow shutdown signal will be triggered in a very short time, resulting in unplanned shutdown of the power plant.

After the completion of the project, Haiyang Nuclear Power Unit 1 and 2 become the first domestic CAP1000 nuclear power plant with backup switching capability of main pump frequency converter. the successful completion of the project is of great significance to improve the power supply reliability of the third generation nuclear power main pump.

By 12:30 on October 28, 2023, the cumulative power generation of units 1 and 2 of Haiyang Nuclear Power Project exceeded 1000 billion kWh, equivalent saving of 42.75 million tons of raw coal consumption and reduction of 80 million tons of carbon dioxide emissions, effectively improving the regional energy structure and ecological environment.

CTOnews.com inquiry found that Haiyang Nuclear Power Station is the first nuclear power plant to be built and put into operation in Shandong Province. The project plans to build six million kilowatt nuclear power units and one integrated small reactor, and reserves room for the expansion of two nuclear power units. Units 1 and 2 of the first phase of the project were first connected to the grid on August 17 and October 13, 2018, respectively, and were fully completed and put into operation in 2019. The construction of Unit 3 and Unit 4 of the second phase of the project will start in July 2022 and is expected to be fully completed and put into operation in 2027.

After the completion of all eight nuclear power units, the total installed capacity of the plant will reach 10 million kilowatts, and the annual generating capacity will reach 80 billion kilowatt-hours, which will be able to meet the electricity needs of 100 million residents.

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