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Reactor dynamic interlock system and method based on digital instrumentation and control system

A technology of instrument control system and interlock system, applied in the field of reactor dynamic interlock system based on digital instrument control system, can solve the problem that it is difficult for the operator to quickly and accurately judge the operating state of the reactor, output more information, and increase operator misjudgment Problems such as misoperation probability and other issues can be achieved to save judgment time, improve execution efficiency, and improve judgment accuracy

Active Publication Date: 2015-03-04
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While the digital instrument control system has the advantages of easy implementation of advanced control algorithms, support for online inspection and self-diagnosis, and friendly man-machine interface, it also brings more and more complex system operation information and status alarms to the operator, which makes It is difficult for the operator to quickly and accurately judge the operating status of the reactor, especially when the reactor is in abnormal operating conditions, the existing digital instrument and control system outputs too much information, which increases the probability of misjudgment and misoperation by the operator. Human error is more likely to occur under mental pressure, which leads to accidents

Method used

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  • Reactor dynamic interlock system and method based on digital instrumentation and control system
  • Reactor dynamic interlock system and method based on digital instrumentation and control system
  • Reactor dynamic interlock system and method based on digital instrumentation and control system

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Experimental program
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Effect test

Embodiment 1

[0038] The reactor dynamic interlocking method and system based on the digital instrument control system are used to complete the treatment process of the rupture accident of the steam generator heat transfer tube when the off-site power supply is available.

[0039] Such as figure 1 As shown, the system of the present invention includes: a sensor, a signal processing module, a fault diagnosis module, a decision support module, a dynamic interlocking module, a controller, a monitoring configuration, an execution device and an upper computer;

[0040] When a nuclear power plant is operating at full power, the heat transfer tube of a steam generator ruptures, and sensors such as figure 1 As shown, the radioactivity on the secondary side is detected, and the signal processing module finds that the counting rate of radioactivity on the secondary side of the damaged steam generator is abnormal, and issues an "abnormal counting rate alarm", and sends the alarm bit number and real-ti...

Embodiment 2

[0054] In dealing with steam generator heat transfer tube rupture incidents when off-site power is available, the dynamic interlock module will perform the following process:

[0055] 1. When the encoding sub-module receives the emergency operation procedure of "steam generator heat transfer tube rupture transient" sent by the decision support module, it will transfer each functional unit of the dynamic interlock module to the working state;

[0056] 2. The encoding sub-module converts the "steam generator heat transfer tube rupture transient emergency operation procedure" into "instruction I: steam generator heat transfer tube rupture transient emergency operation instruction" and stores it in the operation instruction set;

[0057] 3. The dynamic execution process memory decomposes "Instruction I: Steam generator heat transfer tube rupture transient emergency operation instruction" into the following execution steps and saves them in the memory for calling by the interlocking...

Embodiment 3

[0076] In the case of steam generator heat transfer tube rupture accidents when the off-site power source is available, and the safety injection system has been automatically activated, the implementation of the "three-level confirmation" mode for the operation of the reactor coolant pump is as follows:

[0077] When the operator decides to execute the “stop pump” operation, the pop-up window requires the operator to confirm again, and provides the operator with the current reactor coolant system pressure, coolant subcooling degree, and the pressure difference between the primary and secondary circuits. Parameters for stopping the pump;

[0078] The operator can judge whether it is a single steam generator heat transfer tube rupture accident based on these three parameters. If the operator is not sure whether the current working condition is a single accident, in order to prevent excessive loss of coolant, confirm the "stop pump" again. The “stop pump” operation requested by t...

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Abstract

The invention relates to a reactor dynamic interlock system and method based on a digital instrumentation and control system. The reactor dynamic interlock system comprises a fault diagnosis module, a decision support module and a dynamic interlock module. When a reactor apparatus generates an abnormal status, the fault diagnosis module outputs possible fault reasons, the decision support module lists corresponding emergency operation procedures, after an operator determines an emergency operation procedure according to a judgment, and the dynamic interlock module automatically executes the emergency operation procedure through a controller and downloads a monitoring configuration shielding dangerous operation for an operator station, such that the execution efficiency of the emergency operation procedure can be effectively improved, wrong operation of the operator can be prevented, and safe operation of a reactor is guaranteed.

Description

technical field [0001] The invention relates to an auxiliary safety control method for a reactor, and more specifically, relates to a reactor dynamic interlocking system and method based on a digital instrument control system. Background technique [0002] With the development of nuclear power plant engineering technology, the digital instrument control system has gradually replaced the traditional analog instrument control system. While the digital instrument control system has the advantages of easy implementation of advanced control algorithms, support for online inspection and self-diagnosis, and friendly man-machine interface, it also brings more and more complex system operation information and status alarms to the operator, which makes It is difficult for the operator to quickly and accurately judge the operating status of the reactor, especially when the reactor is in abnormal operating conditions, the existing digital instrument and control system outputs too much i...

Claims

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Application Information

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IPC IPC(8): G21D3/06
CPCG21D3/06Y02E30/00
Inventor 徐鹏王大桂王为田汪建业宋勇吴宜灿
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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