Digital Design and Reliability Analysis for Qinshan Phase-I Reactor Power Control System
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摘要: 秦山一期核电厂300 MW反应堆功率棒控棒位系统为模拟仪表控制系统,由于设备老化、维护困难和可靠性下降等原因需要改造。系统改造采用基于CPU冗余、电源冗余和ControlNet现场总线冗余的控制方案。利用PLC控制技术,对其棒控棒位模拟仪表控制系统进行数字化改造设计,克服了系统参数不能实时调整、抗干扰能力差等缺陷,增强了系统的通信能力、集中监控能力及系统可维护性,提高了系统的可靠性和安全性。模块化的程序设计,增强了程序的可读性和实用性,减少了程序扫描时间,保证了系统响应速度。实际反应堆的运行效果验证了设计的合理性。Abstract: A novel control strategy based on the redundancies of CPU,power supply and ControlNet field-bus is proposed to solve the problems of equipment aging,maintenance and reliability of Qinshan Phase-I 300 MW reactor power analog instrumentation and control（I＆C） system.Digital design based on PLC control technology is used to replace its rod control and position indication so that the limitations of being unable to adjust the system parameters online and poor anti-interference capability can be avoided and the system communication,central monitoring,maintainability,reliability and security can be improved.The modular program design can strengthen the readability and practicability,shorten the scanning time and speed the response.The feasibility and rationality of the design have been proved in a practical reactor operation.Finally,the author briefly introduces some feasible ways to enhance the reliability of the reactor digital control system.
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Key words:
- Reactor /
- RCPI system /
- Power control /
- Digital design /
- Reliability
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