Power supply method for nuclear power plant cold-state function test

Abstract

The invention discloses a power supply method for a nuclear power plant cold-state function test. The power supply method for a nuclear power plant cold-state function test comprises the following steps of orderly running three main pumps, carrying out load limit of equipment, wherein the equipment and the main pump which is running are arranged in the same incoming line, starting an equipment cooling water system, an essential service water system and a residual heat removal system of one of alternating current emergency switchboards according to demands, wherein the main pump which is running and the one of the alternating current emergency switchboards are not arranged in the same incoming line, using an auxiliary power supply with two independent outer power grid inlet wires to independently supply power to an A row of the alternating current emergency switchboard and a B row of the alternating current emergency switchboard respectively by auxiliary transformers, using the A row of the alternating current emergency switchboard to supply power to a charging pump 1, using the B row of the alternating current emergency switchboard to supply power to a charging pump 2 and a charging pump 3, and keeping simultaneous running of the charging pump 1 and one of the charging pump 2 and the charging pump 3. The power supply method for a nuclear power plant cold-state function test can realize a cold-state function test when a main power supply is not available.

Description

technical field [0001] The invention relates to the field of debugging of nuclear power plants, in particular to a power supply method for cold-state functional tests of nuclear power plants. 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 is carried out in a reactor core composed of nuclear fuel within 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 th...

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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a power supply method for a nuclear power plant cold function test in view of the defects in the prior art that the cold function test cannot be performed when the main power supply is unavailable. Cold functional tests can be performed even when the power supply is unavailable

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