A method and system for verifying the default value of a digital instrument and control system signal in a nuclear power plant

A technology of instrument control system and verification method, which is applied in the direction of nuclear power plant control, nuclear power plant, nuclear power generation, etc., can solve the problem of no digital instrument control system signal default value verification, etc., and achieve the effect of improving safety and usability

Inactive Publication Date: 2011-12-28
中广核工程有限公司 +1
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a relatively complete method and system for verifying the default value of the digital instrument and control

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  • A method and system for verifying the default value of a digital instrument and control system signal in a nuclear power plant
  • A method and system for verifying the default value of a digital instrument and control system signal in a nuclear power plant
  • A method and system for verifying the default value of a digital instrument and control system signal in a nuclear power plant

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[0032] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0033] Such as figure 1 As shown, the nuclear power plant DCS (Digital Instrument Control System) signal default value verification system of the embodiment of the present invention includes a signal receiving unit 20 , a default value function block 30 , a simulation verification platform 40 and a default value database 50 . Among them, the signal receiving unit 20 is used to obtain the digital instrument control system signal, that is, the DCS signal, which includes an analog signal and a switch signal. Generally, after the feedback signal of the field sensor or equipment status is standardized, ...

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Abstract

The invention discloses a method and system for verifying the default value of a digital instrument control system signal of a nuclear power plant, wherein the method includes the following steps: receiving the signal of the digital instrument control system; judging whether the signal of the digital instrument control system is valid; The signal of the control system is replaced by the preset default value; the default value of the digital instrument control system signal is verified; the relevant data in the verification process is recorded. The invention verifies the default value of the signal of the digital instrument control system of the nuclear power plant, and records the relevant data in the simulation verification process, so as to analyze the verification situation of the default value according to the records, continuously improve the setting of the default value, and improve the safety of the nuclear power plant and usability.

Description

technical field [0001] The invention relates to a digital instrument control system of a nuclear power plant, in particular to a method and system for verifying a signal default value of the digital instrument control system of a nuclear power plant. Background technique [0002] As a mature control technology, DCS (Digital Control System) has been applied in nuclear power plants. Compared with the control logic built by operational amplifiers and relays in traditional nuclear power plant instrumentation and control systems, DCS greatly increases the reliability of power plant control. The problem of default value must be considered in DCS design. The default value refers to the substitute value adopted by the DCS for the failure signal after the DCS determines that the signal is invalid. Using the default value can reduce the impact of the DCS signal failure on the safety and availability of the nuclear power plant. The choice of default value is directly related to the s...

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Application Information

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IPC IPC(8): G21D3/00
CPCY02E30/40Y02E30/00
Inventor 顾海霞苏朝葵张焕欣赵岩峰虞斌罗文飞廖惜民
Owner 中广核工程有限公司
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