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Signal quick switching circuit for realizing response time measurement of protection system

A fast switching and response time technology, applied in nuclear power generation, power plant safety devices, greenhouse gas reduction, etc., can solve the problems of high error rate and low efficiency, achieve the effect of less cables, improve test efficiency, and increase reliability

Pending Publication Date: 2021-02-12
CNNC FUJIAN FUQING NUCLEAR POWER
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Problems solved by technology

[0009] The purpose of the present invention is to address the above disadvantages, to propose a signal fast switching circuit for measuring the response time of the protection system, and to form a fast signal switching circuit through modularization, cascade bridging, etc., to realize fast and accurate signal measurement of the protection system response time Switching, solving the problems of low efficiency and high error rate during manual switching, and improving test efficiency

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  • Signal quick switching circuit for realizing response time measurement of protection system
  • Signal quick switching circuit for realizing response time measurement of protection system
  • Signal quick switching circuit for realizing response time measurement of protection system

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Embodiment Construction

[0038] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0039] The measurement of the response time of the protection system mainly measures the response time of each protection system logic. For the response time test of each logic, it is necessary to access the trigger of an input signal of this logic as the reference point for the start of time record acquisition, and then select the output signal of this logic as the reference point for the end of time record acquisition.

[0040] The entire measurement process is mainly divided into two parts: signal switching and measurement time.

[0041] Signal switching: It takes about 10 to 30 minutes, depending on the number of switching signals and the difficulty of disconnecting the cabinets.

[0042] Measuring time: about 1 to 2 minutes, used for multiple signal triggering, recovery and recorder data recording.

[0043] From the above empir...

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Abstract

The invention belongs to the technical field of digital control, and particularly relates to a signal quick switching circuit for realizing response time measurement of a protection system. The quickswitching circuit is built based on a relay, the response time is measured, the switching circuit is used for selecting and switching a measurement circuit, the controlled end of the relay is used foron / off of a metal switch, the control end of the relay is an electronic component; after a control command signal is accessed, rapid action of the relay can be realized; the signal rapid switching circuit is formed by means of modularization, cascade bridging and the like, rapid and accurate switching of signals of response time measurement of the protection system is achieved, the problems of low efficiency and high error rate during manual switching are solved, and the test efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of digital control, and in particular relates to a signal fast switching circuit for realizing the response time measurement of a protection system. Background technique [0002] The reactor protection system of a nuclear power plant (hereinafter referred to as the protection system) performs threshold judgment and logic processing by receiving changes in upstream instrument signals, triggering shutdown or activating special safety facilities to ensure the safety of the reactor. In order to ensure that the protection system can act in time under accident conditions, nuclear power plants need to regularly perform response time measurement tests during the commissioning and overhaul stages. [0003] There are about 200 input signals (including digital and analog) and about 100 output signals for the response time of the protection system, which are mainly distributed in four protection channels and two special...

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Application Information

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IPC IPC(8): G21D3/04G21D3/06
CPCG21D3/04G21D3/06Y02E30/00
Inventor 杨宝松杨汝贞尤兵陈伟商海龙林贤雯江元正曾姝婕曹培根夏小军张绪怡余周峰郭唐文林静怡王世震周杨李非张崇浩余知府宫成军周国烨刘杨中华王旭
Owner CNNC FUJIAN FUQING NUCLEAR POWER
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