一种考虑风电场并网的大电网快速主动解列策略  

A Fast Active Islanding Strategy for Large Power Grid Considering Wind Farm Integration

作　　者：唐飞[1] 刘扬[1] 施浩波 邹宏亮 周芳[1] Tang Fei;Liu Yang;Shi Haobo;Zou Hongliang;Zhou Fang(School of Electrical Engineering and Automation Wuhan University Wuhan 430072 China;China Electric Power Research Institute Beijing 100192 China;State Grid Zhejiang Electric Power Company Taizhou Power Supply Company Taizhou 318000 China)

机构地区：[1]武汉大学电气与自动化学院,武汉430072 [2]中国电力科学研究院有限公司,北京100192 [3]国网浙江省电力有限公司台州供电公司,台州318000

出　　处：《电工技术学报》2019年第10期2092-2101,共10页Transactions of China Electrotechnical Society

基　　金：国家电网公司科技资助项目(考虑第三道防线的规划电网多级网架结构优化方法研究)

摘　　要：针对高风电渗透率电力系统的快速主动解列问题,提出了一种两阶段高风电渗透率下大电网全时段快速主动解列策略。在第一阶段,通过修正系统的收缩导纳矩阵将风功率进行等值,离线计算出电机耦合程度的分类结果并对其功角拉普拉斯矩阵进行在线修正,进而在线获得当前的同调分群结果;在第二阶段,以图论为基础,通过约束谱聚类算法将解列断面搜索问题转换为广义特征值求解问题,并运用改进k-means算法快速求取实时的最优解列断面。最后通过IEEE 118节点系统仿真,验证了所提策略的正确性、有效性和快速性。Aiming at the problem of fast active islanding of power system with high wind permeability, a two-stages fast active islanding strategy for large scale power grid under high wind power penetration is proposed in this paper. In the first stage, wind power is equivalent by modifying the shrink admittance matrix of the system. The power angle Laplacian matrix is modified online according to the offline calculation results of the coupling degree of the generators, and then the current coherency identification results are obtained online. In the second stage, a constrained spectral clustering algorithm is, based on graph theory, applied to transform the problem of islanding sections searching to the generalized eigenvalue problem, and the improved k-means algorithm is applied to get the real-time optimal islanding sections quickly. Finally, the correctness, effectiveness and rapidity of the proposed method are verified by the simulation in the IEEE 118-bus system.

关 键 词：主动解列 风电场并网 发电机同调分群 最优解列断面搜索 改进K-MEANS算法 

分 类 号：TM712[电气工程—电力系统及自动化]