| 电力互感器对同步相量测量的影响 |
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| 引用本文： | 刘灏,毕天姝,周星,薛安成,杨奇逊. 电力互感器对同步相量测量的影响[J]. 电网技术, 2011, 0(6) |
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| 作者姓名： | 刘灏 毕天姝 周星 薛安成 杨奇逊 |
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| 作者单位： | 电力系统保护与动态安全监控教育部重点实验室(华北电力大学); |
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| 基金项目： | 国家自然科学基金项目(50837002);国家自然科学基金重大国际合作项目(50920105705); 高等学校学科创新引智计划项目(B08013)~~ |
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| 摘 要： | 电力互感器作为连接一次系统和同步相量测量单元(phasor measurement units,PMUs)的必要设备,是PMU能否准确获取一次系统信息的重要环节,其传变精度和动态特性直接影响PMU相量测量的精度。首先总结了电力系统动态现象所对应的动态信号模型,包括故障引起的非周期分量、幅值突变和系统振荡;分析了电力系统在发生以上动态过程时电力互感器对相量测量的影响;并侧重分析了电容式电压互感器的铁磁谐振和瞬变响应问题以及电流互感器的饱和问题,以此来观察电力互感器在不同动态情况下对相量测量结果的影响。
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| 关 键 词： | 同步相量测量单元 电容式电压互感器 瞬变响应 铁磁谐振 电流互感器 |
Impact of Instrument Transformers on Synchronous Phasor Measurement |
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| LIU Hao,BI Tianshu,ZHOU Xing,XUE Ancheng,YANG Qixun ,Ministry of Education,Changping District,Beijing ,China). Impact of Instrument Transformers on Synchronous Phasor Measurement[J]. Power System Technology, 2011, 0(6) |
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| Authors: | LIU Hao BI Tianshu ZHOU Xing XUE Ancheng YANG Qixun Ministry of Education Changping District Beijing China) |
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| Affiliation: | LIU Hao,BI Tianshu,ZHOU Xing,XUE Ancheng,YANG Qixun (Key Laboratory of Power System Protection and Dynamic Security Monitoring and Control(North China Electric Power University),Ministry of Education,Changping District,Beijing 102206,China) |
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| Abstract: | Intrumental voltage and current transformers are necessary devices to connect primary system with synchronous phasor measurement units(PMUs) and they are also the key links by which whether the PMU can accurately acquire information of primary system,and their transmission and tranformation precision as well as their dynamic characteristics directly impact the phasor measurement accuracy of PMU.The authors firstly summarize the dynamic signal models corresponding to dynamic processes in power system,includi... |
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| Keywords: | phasor measurement unit(PMU) capacitor voltage transformer transient response ferro-resonance current transformer |
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