天广直流稳控系统与极控系统控制时序配合方法仿真研究

摘要

Security and stability control system ( SSC) is an important guarantee for the safe operation of power grid, and for HVDC system modulation function is an important kind of stability control measures.Combined with Tianshengqiao-Guangzhou HVDC safety strategy transformation, RTDS simulation test is conducted.In allusion to the exposed defects about SSC handling with multiple DC power modulation orders and sequence coordination between SSC and pole control system, the processing means for the stability con-trol device of Mawo converter station and control characteristics of DC power downhill for pole control system are analyzed in detail. An optimization method of control sequence coordination for stability control system and pole control system is proposed and tested on the SSC test platform.Test results show the effectiveness of the proposed method, and this method can provide guidance for the design and implementation of SSC scheme of HVDC project with similar techniques.%安全稳定控制系统是电网安全稳定运行的重要保证,调制功能是直流输电系统参与电网稳定控制的一种重要措施.结合天广直流安稳策略改造,开展了RTDS仿真试验,针对试验中暴露的稳控系统处理连续调制命令的缺陷以及与极控系统时序配合的缺陷,详细分析了马窝换流站稳控装置的处理方式以及直流极控回降直流功率的控制特性,提出了稳控系统与极控系统控制时序配合优化方法.利用安稳控制系统试验平台对优化方法进行了仿真试验,试验结果表明了方法的有效性.该方法对于同类技术路线的直流工程的稳控方案设计及工程实施也具有重要的借鉴意义.