引用本文:段刚,王茂海,陈程,等.基于瞬时值比较的PMU动态性能在线评测方法及系统[J].电力系统保护与控制,2015,43(15):22-27.
DUAN Gang,WANG Maohai,CHEN Cheng,et al.Instantaneous value comparison based PMU dynamic characteristics evaluation method and system[J].Power System Protection and Control,2015,43(15):22-27
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基于瞬时值比较的PMU动态性能在线评测方法及系统
段刚1, 王茂海2, 陈程1, 张道农3, 詹庆才1, 杨东1, 祁鸿燕1, 李廷军1
1.北京四方继保自动化股份有限公司，北京 100085;2.国家电网华北电力调控分中心，北京 100053;3.华北电力设计院工程有限公司，北京 100120
摘要:
同步相量测量单元(PMU)的动态性能，是广域测量系统(WAMS)的各项高级应用可靠性的重要基础。提出一种基于大扰动的特征动态时段的瞬时值比较的PMU动态性能评测方法。将PMU相量数据还原为相量暂态录波数据，获取对应的实际暂态录波数据，分析两者在相关性、相量算法快速响应、纯幅值缩放和总体相似性上的差异，对PMU动态性能进行全面定量的评价。采用实际现场PMU数据验证了上述理论分析的正确性和可行性。此外，设计了在线评测系统，可应用于实际电网运行过程中实时监控和评价PMU动态性能。
关键词:  瞬时值比较  动态性能  在线评测系统  同步相量测量单元  广域测量系统
DOI：10.7667/j.issn.1674-3415.2015.15.004
分类号:
基金项目:国家电网公司科技项目资助(52011013508K)
Instantaneous value comparison based PMU dynamic characteristics evaluation method and system
DUAN Gang1, WANG Maohai2, CHEN Cheng1, ZHANG Daonong3, ZHAN Qingcai1, YANG Dong1, QI Hongyan1, LI Tingjun1
1.Beijing Sifang Automation Co. Ltd., Beijing 100085, China;2.North China Branch of State Grid Power Dispatch & Control Center, Beijing 100053, China;3.North China Power Engineering Co., Ltd., Beijing 100120, China
Abstract:
The dynamic characteristics of phasor measurement unit is the important base of the reliability of advanced applications of wide area measurement system. The paper proposes a PMU dynamic characteristics evaluation method based on instantaneous value comparison during featured dynamic period of great disturbances. The method restores phasor data to instantaneous sampling data, obtains real sampling data from fault recorder, and analyzes the differences in correlation, response speed of phasor algorithms, amplitude change and total similarity between instantaneous sampling data from phasor and instantaneous sampling data from fault recorder. The PMU dynamic characteristics can be roundly and quantificationally evaluated by the indexes. The theory has been proved correctly and feasibly by practical-environment PMU data. Furthermore, for practical application, the paper designs an online evaluation system, which provids realtime monitoring and systematic evaluation.
Key words:  instantaneous value comparison  dynamic characteristics  online evaluation system  phasor measurement unit  wide area measurement system
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