电力系统暂态稳定评估与紧急控制灵活组态策略研究  

Research on Flexible Configuration Strategy for Power System Transient Stability Assessment and Emergency Control

作　　者：许高阳 刘一民 颜云松 夏海峰 XU Gaoyang;LIU Yimin;YAN Yunsong;XIA Haifeng(NARI Group Corporation/State Grid Electric Power Research Institute,Nanjing 211106,China;North China Branch of State Grid Corporation of China,Beijing 100053,China)

机构地区：[1]南瑞集团有限公司/国网电力科学研究院有限公司,江苏南京211106 [2]国家电网有限公司华北分部,北京100053

出　　处：《微型电脑应用》2023年第3期36-39,共4页Microcomputer Applications

基　　金：国家电网有限公司总部管理科技项目资助(5100-202055019A-0-0-00)。

摘　　要：针对电力系统运行中暂态稳定评估误差较大,对失稳状态紧急控制反应时间较长的问题,利用并行隐马尔科夫模型(PHMM)暂态评估方法将系统数据划分为失稳状态和稳定状态,采用判别式紧急控制策略缩短反应时间,通过判断凸轨迹的方式分析系统是否需要进行紧急控制。利用多粒度级联梯度(MCG)评估算法对系统暂态评估进行建模,增强系统评估结果的可靠性。试验表明,这种方法最高处理线路电压为9.2 kV,暂态评估结果误差为0.68%,系统失稳反应时间为1.67 s。Aiming at the large transient stability evaluation errors in power system operation and long response time to emergency control of unstable states,the parallel hidden Markovian model(PHMM)transient evaluation method is used to divide the system data into fail and stable states.In a stable or unstable state,the discriminative emergency control strategy is adopted to shorten the reaction time,the system needs to be subjected to emergency control by judging the convex trajectory,and the control intensity is high.The multi-granularity cascade gradient(MCG)evaluation algorithm is used to model the system transient data to enhance the reliability of the system evaluation results.The experiment shows that the highest processing line voltage is 9.2 kV,the transient evaluation result error is 0.68%,and the system instability reaction time is 1.67 s.

关 键 词：电力系统暂态稳定 评估网络 PHMM评估方法 判别式紧急控制技术 MCG评估算法 

分 类 号：TM712[电气工程—电力系统及自动化]