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摘要:目的 电压暂降是配电网中影响最严重的电能质量问题之一。目前，由于缺乏对电压暂降源定位的系统，责任划分和归属问题一直是电压暂降事故处理的难点。采用配电网同步电能质量测量数据进行监测和分析是解决电压暂降溯源问题的有效途径。方法 首先，分析了同步相量与电能质量测量一体化的体系架构和融合方案，提出基于实时同步量测数据实现电压暂降源溯源定位的方法；然后，提出了配电网示范工程布点案例设计方案；最后，对同步相量与电能质量测量一体化在智能配电网的应用进行了总结。结果 示范建设成效验证了所提出设计方案的可行性。结论 示范工程为后续大规模推广和复制积累了工程经验。Abstract:Introduction Voltage sag is one of the most serious power quality problems in distribution network. At present, due to the lack of a system to locate the source of voltage sag, the problem of responsibility division and attribution has always been the difficulty in dealing with voltage sag accidents. It is an effective way to solve the problem of voltage sag traceability by monitoring and analyzing the synchronous power quality measurement data of distribution network.Method Firstly, the architecture and fusion scheme of the integration of synchronous phasor and power quality measurement were analyzed, and a method of voltage sag source tracing and location based on real-time synchronous measurement data was proposed. Then, the case design scheme of distribution network demonstration project was proposed. Finally, the application of synchronous phasor and power quality measurement integration in intelligent distribution network was summarized in this paper.Results The results of demonstration construction verify the feasibility of the proposed design scheme.Conclusion The demonstration project has accumulated engineering experience for subsequent large-scale promotion and replication.
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表 1 各方案暂降溯源定位结果
Table 1
Traceability and positioning results of voltage sag of each scheme 方案序号 具体方案 暂降溯源定位结果 方案1 配网一体化测量装置覆盖率达100% 可有效捕捉暂降事件，定位准确度99% 方案2 配网一体化测量装置+SCADA覆盖率达100% 可捕捉部分暂降事件，定位精度较低 方案3 量测不足 基本无法捕捉暂降事件 
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