| 引用本文: | 翁汉琍,江毅,林湘宁,魏繁荣,李振兴.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[J].电力自动化设备,2025,45(3): |
| WENG Hanli,JIANG Yi,LIN Xiangning,WEI Fanrong,LI Zhenxing.Coherent network reconstruction strategy for dynamic instability evolution process in novel power system[J].Electric Power Automation Equipment,2025,45(3): |
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| 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。 |
| 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 |
| DOI：10.16081/j.epae.202411024 |
| 分类号:TM73 |
| 基金项目:国家自然科学基金资助项目(52077120) |
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| Coherent network reconstruction strategy for dynamic instability evolution process in novel power system |
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WENG Hanli1, JIANG Yi2, LIN Xiangning3, WEI Fanrong3, LI Zhenxing1
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1.Hubei Provincial Collaborative Innovation Center for New Energy Microgrid, China Three Gorges University, Yichang 443002, China;2.State Grid Fuzhou Changle District Electric Power Supply Company, Fuzhou 350200, China;3.State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
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| Abstract: |
| 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 disconnected from the grid under unstable condition, and consider the goodcoherence? brought by dividing the out-of-step oscillation center. The effectiveness of the proposed strategy is verified by PSCAD simulation comparison. |
| Key words: new energy out-of-step splitting coherent interval reconstruction out-of-step oscillation center load loss |
