Method for testing shutdown condition response time of nuclear reactor protection system

A nuclear power plant reactor and reactor protection technology, applied in nuclear reactor monitoring, reactor, nuclear engineering, etc., can solve the problems of inability to fully reflect the operating conditions of nuclear power plants, increase the complexity of test work, and incomplete test objects, etc., to achieve complete test objects, The effect of improving test quality and reducing complexity

Active Publication Date: 2018-12-11
STATE NUCLEAR POWER AUTOMATION SYST ENGCO
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AI Technical Summary

Problems solved by technology

[0005] 1. The configuration of the control software must be modified every time the shutdown response time is tested, and the time constant of the hysteresis algorithm is set to zero, which increases the complexity of the test work, reduces work efficiency, and is prone to human error
[0006] 2. Since the configuration of the protection system control software was modified before the response time test, the test object was incomplete and could not fully reflect the actual operating conditions of the nuclear power plant

Method used

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  • Method for testing shutdown condition response time of nuclear reactor protection system
  • Method for testing shutdown condition response time of nuclear reactor protection system
  • Method for testing shutdown condition response time of nuclear reactor protection system

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Embodiment

[0029] Example: Response time test for shutdown conditions with low core coolant flow rate.

[0030] During the normal operation of the nuclear power plant, the core coolant flow rate is strictly controlled within a certain limit to ensure the safe and stable operation of the reactor. The flow sensor arranged at the hot end of the primary circuit transmits the flow value of the hot end to the reactor protection system in real time. When the reactor protection system detects that the flow value of the hot end is less than the set value, the reactor shutdown will be triggered on the premise that the P10 signal is not blocked. Signal to control the shutdown of the reactor. In order to ensure that the reactor protection system outputs the shutdown signal of low hot-end core coolant flow in time, it is necessary to test the response time of the shutdown function of the reactor protection system for low hot-side core coolant flow.

[0031] After the reactor protection system collec...

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Abstract

The invention belongs to the technical field of nuclear reactor protection systems and provides a method for testing shutdown condition response time of a nuclear reactor protection system with a time-delay compensation link for solving the technical problems in the conventional response time testing technology that the test method is complicated, the test efficiency is low, the test object is incomplete and the like. The method comprises the following steps: setting up a test environment, injecting a normal operating process signal into the protection system by a signal generation device, andenabling the protection system to operate in a normal state; injecting a shutdown condition signal into the protection system by the signal generation device, enabling the protection system to outputa shutdown signal, recording the jump time difference by an oscilloscope, modeling the shutdown logic in simulation software to obtain the time difference in the time-delay processing link, and subtracting the time difference recorded by the oscilloscope and the time difference in the time-delay processing link, thereby obtaining the shutdown response time.

Description

technical field [0001] The invention relates to the technical field of performance testing of nuclear power plant protection systems, in particular to a method for testing the response time of a shutdown working condition of the protection system with a time-delay compensation link. Background technique [0002] The reactor protection system of nuclear power plant is an important equipment to ensure the safe and stable operation of the nuclear power plant. Its main function is to monitor the equipment status of the nuclear power plant and trigger the emergency shutdown of the reactor when necessary to ensure the safety of the nuclear reactor under accident conditions. In the design of the protection system, it is required that the response time of the reactor protection system from receiving the abnormal condition signal to outputting the shutdown signal should be less than a certain value, so the response of the reactor protection system under various shutdown conditions mus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C17/00
CPCG21C17/00Y02E30/30
Inventor 汪绩宁蒋嵩王南朱夕辉何丽冰安媛田家杨戴瑞东刘培扬
Owner STATE NUCLEAR POWER AUTOMATION SYST ENGCO
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