Control method of nuclear power steam generator

Abstract

The invention discloses a control method of a nuclear power steam generator. The control method comprises the steps of (a) mechanism modeling in which a high-temperature gas-cooled-reactor steam generator model is established according to thermotechnical waterpower principle; (b) data collection; (c) state estimation; (d) fault diagnosis and reconstruction; and (e) control according to reconstructed values. Tolerance control design is carried out on the steam generator based on a traceless Kalman filter; and on the basis of a lumped parameter model, tolerance control with stable water level and flow of the steam generator is achieved by detecting and separating sensor faults in real time and reconstructing output values of the sensor. Even if detection faults occur in the sensor, the control effect is good, the cost of hardware redundancy is reduced, tracking control for a multivariable nonlinear system can be realized, the possibility of nuclear power safety accidents caused by detection faults is effectively reduced, the safety level is high, the control effect is good, and computers are easy to control.

Description

【Technical field】 [0001] The invention relates to the field of high-temperature gas-cooled reactor nuclear power plant steam generators, in particular to the technical field of a nuclear power steam generator control method combined with unscented Kalman filtering and fault-tolerant control. 【Background technique】 [0002] The steam generator is the power component of the high-temperature gas-cooled reactor nuclear power plant. It is one of the three major equipments in the nuclear island. It is the boundary of the primary and secondary circuits of the pressurized water reactor nuclear power plant. It transfers the heat generated by the reactor to the steam generation On the secondary side of the device, the steam generated is dried by the primary and secondary steam-water separators to drive the turbogenerator to generate electricity. The coolant flowing out of the reactor enters the water chamber from the inlet of the lower head of the steam generator through the heat pipe...

AI Technical Summary

Problems solved by technology

[0003] The stability of the controlled variable of the steam generator is of great significance to the safe operation of the nuclear power plant. When the sensor in the steam generator fails, it will affect the control signal, resulting in instability of the controlled variable of the steam generator, control deviation, and even series of security issues

[0004] At present, nuclear power plants mainly use hardware redundancy to prevent sensor failure; due to the expensive equipment of nuclear power plants, this hardware redundancy method greatly increases the equipment cost and space of nuclear power plants

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