大型火电机组分散控制系统性能测试试验研究

大型火力发电机组分散控制系统（DCS）性能直接影响到机组的安全稳定运行。对某1 000 MW超超临界燃煤发电机组DCS进行了实时性、冗余功能、网络性能和抗干扰性能测试,介绍了测试方法并对测试结果进行了分析,发现了系统存在的问题和隐患,提出了相应的改进建议,可提高该型DCS的稳定性和可维护性,对该机组的调试具有非常重要的指导意义。

Performance Testing on the DCS of a Large Thermal Power Generation Unit

As the core part of data processing and management of large thermal power generation units, the distributed control system (DCS) performs monitoring and control over mass real-time and historic operation data. Therefore its performance has great impacts on the secure and stable operation of the units. In this paper, the test study on the DCS performance is conducted for a 1 000-MW ultra- supercritical coal-fired power generation unit, which consists of real-time testing, redundancy testing, network performance testing and anti-interference testing. The testing methods are presented and the results are analyzed, such that both the existing problems and the potential issues of the system are discovered. At last, the corresponding suggestions on improving the stability and maintainability of the DCS system are put forward, which is of great importance to guide the unit tuning.