Reliability Verification Method of 380V Mobile Emergency Power Supply in Nuclear Power Plant
A technology of emergency power supply and verification method, which is applied in the field of nuclear power, can solve the problems that the performance of the mobile emergency power supply cannot be fully verified to meet the design requirements, there is no water injection test for the shaft seal of the on-load safety injection pump, and the lack of real simulation operation verification and inspection, etc., to achieve Effects of improving defense-in-depth capabilities and enhancing reliability
Active Publication Date: 2019-01-15
中广核工程有限公司 +2
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Problems solved by technology
[0010] In the above-mentioned existing debugging technical scheme, there is a lack of a test with a rated load on the 380V mobile emergency power supply, a water injection test on the shaft seal of the on-load safety injection pump, and a lack of verification and inspection of real simulated operation, so the mobile emergency power supply cannot be fully verified. The performance meets the design requirements
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[0045] The process flow of the reliability verification method of the 380V mobile emergency power supply of the nuclear power plant in the preferred embodiment of the present invention is as follows: figure 2As shown, the method starts at step S10; in step S20, the feasibility analysis of the 380V mobile emergency power supply with the on-load main pump injecting shaft seal water is carried out to determine whether the 380V mobile emergency power supply meets the requirements of the on-load main pump for injecting shaft seal water. Test conditions, output judgment results; when the 380V mobile emergency power supply satisfies the test conditions for the on-load main pump to inject shaft seal water, in step S30, carry out a test with a rated load on the 380V mobile emergency power supply, and output the load capacity test parameters, Judging the load capacity of the 380V mobile emergency power supply according to the load capacity test parameters, and output the load capacity j...
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The invention relates to a reliability validation method of a 380V mobile emergency power source of a nuclear power station. The reliability validation method of the 380V mobile emergency power source of the nuclear power station includes the following steps: performing feasibility analysis on a loaded main pump shaft seal water injection pump, and outputting a feasibility analysis judgment result; performing an experiment of loading the 380V mobile emergency power source with a rated load, and outputting experiment parameters of loaded capacity; judging loaded capacity of the 380V mobile emergency power source according to the experiment parameters of the loaded capacity; performing a water injection experiment on a loaded safe injection pump shaft seal, and outputting experiment parameters of water injection ability of the loaded safe injection pump shaft seal; judging the water injection ability of the loaded safe injection pump shaft seal of the 380V mobile emergency power source according to the experiment parameters of the water injection ability of the loaded safe injection pump shaft seal. The reliability validation method of the 380V mobile emergency power source of the nuclear power station performs the water injection experiment on the loaded safe injection pump shaft seal by performing the experiment of loading the 380V mobile emergency power source with the rated load and simulating accident conditions, overall verifies whether all properties of the 380V mobile emergency power source meet design requirements or not, enhances reliability of the 380V mobile emergency power source, and improves defense ability in depth for the nuclear power station.
Description
technical field [0001] The invention relates to the technical field of nuclear power, and more specifically, relates to a method for verifying the reliability of a 380V mobile emergency power supply of a nuclear power plant. Background technique [0002] At present, in China's improved million-kilowatt (1000MW) pressurized water reactor nuclear power plant (hereinafter referred to as CPR1000 nuclear power plant), every two generator sets are equipped with a set of LLS system (hydrostatic test pump diesel generator set), mainly including 380V mobile diesel Generator set and 380V switchboard. Under normal or design basis accident conditions, the LLS system is in a standby state and does not perform safety functions. Under the super-design reference condition where the two 6kV emergency power supply buses of a generator set cannot supply power, the LLS system can guarantee to provide 380VAC emergency power supply to the hydraulic test pump, and the hydraulic test pump supplies...
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IPC IPC(8): G01R31/40
Inventor 沈锦峄章松林张学文周洪军石全建胥跃周李伟
Owner 中广核工程有限公司