Pressurized water reactor nuclear power station steam generator water level control method and system

Abstract

The invention is applicable to the professional technical field of mega-kilowatt-class pressurized water reactor nuclear power stations and provides a pressurized water reactor nuclear power station steam generator water level control method and system. The method includes a steam engine bypass drain valve openness signal, a water feeding deaerator steam inlet valve openness signal and a steam engine steam inlet narrow range signal; adopting a preset secondary loop image load algorithm to acquire secondary loop image load according to the steam engine bypass drain valve openness signal, the water feeding deaerator steam inlet valve openness signal and the steam engine steam inlet narrow range signal; acquiring a water level control signal; adopting the water level control signal to modify the acquired secondary loop image load and adopting the modified secondary loop image load to control a bypass water feeding adjusting valve of the steam generator. By means of the method and system, the steam generator water level out-of-control problem is solved, and heap jumping caused by the fact that the steam generator water level is out of control is avoided.

Description

technical field [0001] The invention belongs to the professional technical field of a million-kilowatt pressurized water reactor nuclear power plant, and in particular relates to a water level control method and system for a steam generator of a pressurized water reactor nuclear power plant. Background technique [0002] The working principle of the steam generator in the pressurized water reactor nuclear power plant is to transfer the heat generated by the reactor to the water in the secondary circuit, so that the saturated steam generated by the evaporation of the water enters the high-pressure cylinder of the steam turbine to do work. The water level of the steam generator is one of the important monitoring parameters for the operation of the nuclear power plant. The quality of the water level control directly affects the safe operation of the nuclear power plant and the quality of the steam. [0003] The purpose of steam generator water level adjustment is to maintain th...

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Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide a method for controlling the water level of the steam generator in a pressurized water reactor nuclear power plant, aiming to solve the problem of reactor jumping caused by the water level of the steam generator being out of control under low-load operating conditions

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