| 一种任意整数次谐波电压实时检测方法 |
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| 引用本文： | 孙才华,宗伟,何磊,杜宁,李海燕.一种任意整数次谐波电压实时检测方法[J].中国电机工程学报,2005,25(18):70-73. |
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| 作者姓名： | 孙才华 宗伟 何磊 杜宁 李海燕 |
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| 作者单位： | 华北电力大学,电力系统保护与动态安全监控教育部重点实验室,北京市,昌平区,102206 |
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| 摘 要： | 基于瞬时无功功率理论提出了一种任意整数次谐波电压的实时检测方法.该方法在检测中另加标准电流信号,可使电网中实际电流的畸变不会影响检测精度,检测结果也能及时反映频率偏移的变化.为了加快动态响应速度,文中提出了反馈补偿算法并进行了详细的分析.仿真结果表明：反馈补偿算法能有效地加快动态响应速度;反馈补偿大小对响应速度和检测精度也有较大的影响;电网电压频率偏移不影响检测效果.
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| 关 键 词： | 电力系统 瞬时无功功率理论 谐波电压 谐波检测 反馈补偿 频率偏移 |
| 文章编号： | 0258-8013（2005）18-0070-04 |
| 收稿时间： | 2005-07-25 |
| 修稿时间： | 2005年7月25日 |
A REAL TIME DETECTION METHOD FOR ANY INTEGRAL HARMONIC VOLTAGE BASED ON INSTANTANEOUS TEACTIVE POWER THEORY |
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| SUN Cai-hua,ZONG Wei,HE Lei,DU Ning,LI Hai-yan.A REAL TIME DETECTION METHOD FOR ANY INTEGRAL HARMONIC VOLTAGE BASED ON INSTANTANEOUS TEACTIVE POWER THEORY[J].Proceedings of the CSEE,2005,25(18):70-73. |
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| Authors: | SUN Cai-hua ZONG Wei HE Lei DU Ning LI Hai-yan |
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| Abstract: | In order to implement real time detection of harmonic voltage, a method for any harmonic voltage detection based on instantaneous reactive power theory was presented. In the detection the standard current signals were additional, so the detection precision was not affected by the distorted system current and the detection results could also reflect the changes of frequency shift. To make the dynamic response speed quicker, an algorithm with feedback compensation was presented. The simulation results show that the algorithm can quicken the dynamic response speed effectively, the feedback compensation value also has a bigger effect on the response speed and detection precision, and the detection performance are not affected by frequency shift. |
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| Keywords: | Power system Instantaneous reactive power theory Harmonic voltage Harmonic detection Feedback compensation Frequency shift |
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