Method and system for load control in steam turbine regulation of nuclear power plant

Abstract

The invention discloses a load control method for adjustment of a steam turbine of a nuclear power station. The method comprises the following steps: acquiring a set rotating speed value and an actual rotating speed value of the steam turbine of the nuclear power station; judging whether a difference value between an actual load value of the steam turbine for the nuclear power station and a set load value of the steam turbine of the nuclear power station exceeds a preset range or not according to the set rotating speed value and the actual rotating speed value; if the difference value between the actual load value of the steam turbine for the nuclear power station and the set load value of the steam turbine of the nuclear power station exceeds the preset range, sending a steam flow limiting signal to a main control chamber. The load control method for adjustment of the steam turbine of the nuclear power station is a reliable technology for controlling a load in the adjustment of the steam turbine of the nuclear power station, so that safe operation of a nuclear power unit can be guaranteed. Furthermore, the invention also discloses a load control system for adjustment of the steam turbine of the nuclear power station.

Description

technical field [0001] The invention belongs to the technical field of nuclear power, and more specifically, the invention relates to a method and system for regulating mid-load control based on a steam turbine in a nuclear power plant. Background technique [0002] In some new nuclear power projects of CPR1000, the steam turbine regulation system (GRE) controls the load and frequency of the unit by adjusting the steam intake of the steam turbine, so that the unit can operate safely and economically in various working conditions and meet the quality requirements of power supply. At the same time, considering the safety and reliability of nuclear power plant reactors, GRE should have a load open-loop control function to avoid inconsistencies in the load matching process between reactors and turbines. If the reactor does not match, it will cause unnecessary disturbance of the R rod of the reactor, which will have an extremely adverse effect on the operation and service life of...

AI Technical Summary

Problems solved by technology

In some working conditions of nuclear power plants, due to the GRE automatic load control function, the reactor R rods are unnecessarily disturbed, which has an extremely adverse impact on the operation and service life of the nuclear power plant units.

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