A power supply method for nuclear power plant cold state function test

Abstract

The invention discloses a power supply method of a cold-state function test in a nuclear power plant. The power supply method comprises the steps of: sequentially operating three main pumps respectively used for heating a loop and circulating loop fluid, carrying out load limit on equipment positioned on the same line of inlet wires; when an auxiliary power supply loses power, automatically starting diesel engines on one line of inlet wires to drive upper charging pumps, equipment cooling water systems, important factory water utilization systems and residual heat removal systems on the corresponding lines of inlet wires, supplying power for an uninterrupted power supply on the same line of inlet wires and an uninterrupted power supply on another line of inlet wires through patches by the diesel engines so as to supply power for instrument control equipment, wherein the upper charging pump I is arranged on the A line of inlet wires, and the upper charging pump II and the upper charging pump III are arranged on the B line of inlet wires. By implementing the technical scheme of the invention, under the condition that a main power supply is unusable, the progress of building a nuclear power project is not influenced largely, and safety of tests and equipment is ensured.

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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