针对新型电力系统失稳动态演化过程的同调网络重构策略  

Coherent network reconstruction strategy for dynamic instability evolution process in novel power system

作　　者：翁汉琍[1] 江毅 林湘宁[3] 魏繁荣[3] 李振兴[1] WENG Hanli;JIANG Yi;LIN Xiangning;WEI Fanrong;LI Zhenxing(Hubei Provincial Collaborative Innovation Center for New Energy Microgrid,China Three Gorges University,Yichang 443002,China;State Grid Fuzhou Changle District Electric Power Supply Company,Fuzhou 350200,China;State Key Laboratory of Advanced Electromagnetic Engineering and Technology,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]三峡大学新能源微电网湖北省协同创新中心,湖北宜昌443002 [2]国网福州市长乐区供电公司,福建福州350200 [3]华中科技大学强电磁工程与新技术国家重点实验室,湖北武汉430074

出　　处：《电力自动化设备》2025年第3期155-162,170,共9页Electric Power Automation Equipment

基　　金：国家自然科学基金资助项目(52077120)。

摘　　要：新型电力系统中新能源的不确定性、非线性等特征影响了传统电力系统的失稳特性,导致现有失步解列策略难以精确实施。在明晰新能源功率变化对振荡中心迁移影响的基础上,提出一种同调区间重构策略。以解列后子系统的源荷平衡率及负荷损失比例为优化目标,利用潮流控制器的无功调节能力在一定范围内调节失步振荡中心的位置。重构后的解列断面减小了失稳状态下新能源设备脱网的可能性,同时兼顾了分割失步振荡中心所带来的良好同调性。PSCAD的仿真对比验证了所提策略的有效性。The uncertainty and nonlinearity of new energy in the novel power system affect the instability characteristics of traditional power system,making it difficult to accurately implement existing out-of-step splitting strategies.A coherent interval reconstruction strategy is proposed based on clarifying the impact of new energy power change on oscillation center migration.Taking the source-load balance rate and load loss ratio of the decomposed subsystem as the optimization objectives,the reactive power regulation capability of power flow controller is used to adjust the position of out-of-step oscillation center within a certain range.The splitting sections after reconstruction reduce the possibility of new energy equipment being dis-connected from the grid under unstable condition,and consider the good coherence brought by dividing the out-of-step oscillation center.The effectiveness of the proposed strategy is verified by PSCAD simulation comparison.

关 键 词：新能源 失步解列 同调区间重构 失步振荡中心 负荷损失 

分 类 号：TM73[电气工程—电力系统及自动化]