A power supply method and system for a nuclear power plant primary circuit hydraulic pressure test

Abstract

The invention discloses a power supply method and system for a nuclear power plant primary circuit hydraulic pressure test. The power supply method comprises the following steps: S1. an auxiliary power source supplies electric power through at least one row of incoming lines sequentially to start a main pump on the row of incoming lines, and carries out load restriction on the equipment on the same row of incoming line as the main pump; S2. the auxiliary power source is used to start up a charging pump on row of incoming lines through power supplied via the at least one row of incoming lines; S3, the auxiliary power supply supplies power to start a hydraulic pressure test pump to pressurize a primary circuit to a reach a target pressure value; and S4, if the auxiliary power supply is de-energized in the power supply step described above, an emergency power supply on one row of incoming lines is automatically activated to supply power to the load on the row of incoming lines. According to the power supply scheme of the application, no primary power supply is needed, and the safety and reliability degrees are high.

Description

technical field [0001] The invention relates to the field of nuclear power plant debugging, in particular to a power supply method and system for a nuclear power plant primary circuit hydrostatic test. Background technique [0002] The pressurized water reactor nuclear power plant is mainly composed of three parts: the pressurized water reactor, the primary loop system and the secondary loop system. Nuclear fission takes place in a reactor core made of nuclear fuel inside a pressure vessel. Pressurized water reactors use low-enriched uranium as fuel and light water as the coolant and moderator. The heat released by nuclear fission is taken out of the reactor by the high-pressure water flowing through the primary circuit system in the reactor, and the heat is transferred to the water in the secondary circuit in the steamer generator. The steam produced by the heated water drives a steam turbine, which drives a generator to generate electricity. [0003] In order to prevent...

AI Technical Summary

Problems solved by technology

However, the construction of the main power line is often restricted by external conditions, involving land acquisition, demolition, etc., and the work is very difficult. The main power supply is often still unavailable before the hydraulic test of the primary circuit, which makes it impossible to carry out the hydraulic test of the primary circuit. Affects the commissioning process of nuclear power plants

Images