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中文摘要：
提出一种基于故障边电压量的本地量微网保护方案,无需通信辅助。在微网的图描述基础上,提出加权边长以及边电压的概念,进一步提出基于边电压的微网保护方案。方案能够适应并网和孤网运行状态,同时也能够克服应用一般的电压量保护时存在的线路停运无法判断的问题,具有实用价值。通过MATLAB/Simulink仿真验证了边电压保护方案的有效性。
英文摘要：
A new section voltage based protection method for microgrid is proposed that works without communication assistance.Based on the graph model of microgrid,the definition of weighted section length and that of section voltage are proposed.The proposed method works in both the microgrid connected and islanded mode,while overcoming the line outage condition existing in many other voltage based protection methods.The validity of the proposed method is verified by MATELAB/Simulink simulation.
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