Automatic analog quantity testing device and method in nuclear power DCS identification

Abstract

The invention belongs to the technical field of system performance testing in nuclear power DCS, and provides an automatic analog quantity testing device and method in nuclear power DCS identification, wherein the device and method can achieve precision testing and temperature drift and time drift monitoring simultaneously in DCS monitoring; the device comprises multiple temperature sensors, multiple signal conditioning modules and an industrial computer; the temperature sensors are arranged in different analog quantity channels of the nuclear power DCS respectively, and the temperature sensors and the nuclear power DCS are arranged in a constant temperature test chamber together; the signal conditioning modules receive temperature signals of the multiple temperature sensors and convert the temperature signals into electric signals; the industrial computer comprises a data acquisition board card, storage and a controller, the data acquisition board card is arranged to be capable of receiving the electric signals of the multiple signal conditioning modules, and the storage can store the electric signals received by the data acquisition board card; the controller computes time driftand / or temperature drift parameters of analog quantity channels of the nuclear power DCS in nuclear power DCS identification on the basis of the electric signals stored in the storage.

Description

technical field [0001] The invention relates to the technical field of system performance testing in nuclear power DCS, in particular to an analog automatic testing device and method in nuclear power DCS identification. Background technique [0002] Nuclear power safety level equipment must pass the appraisal before leaving the factory, and in the nuclear safety level DCS (English full name Distributed Control System, Distributed Control System) equipment undergoing appraisal, the analog data acquisition and transmission channel is very important for the protection system; The indicators of the analog channel include: accuracy, resolution, acquisition speed or establishment time, temperature drift, time drift, etc. [0003] Among them, the specific requirements for temperature drift and time drift include: when the ambient temperature of the equipment changes, the device parameters with temperature characteristics in the equipment will change accordingly, causing the accurac...

AI Technical Summary

Problems solved by technology

Moreover, when the equipment is operated continuously for a long time, the components in the equipment that affect the accuracy will age with time, which will eventually cause the accuracy to change, that is, time drift; for the safety-level DCS analog channel of the nuclear power plant, it is usually required: "24 months time drift, the analog channel can still meet the accuracy requirements”

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