| 三相四线制系统两种谐波检测方法的比较研究 |
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| 引用本文： | 张金斗,顾建勇.三相四线制系统两种谐波检测方法的比较研究[J].变频器世界,2011(9):130-133. |
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| 作者姓名： | 张金斗 顾建勇 |
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| 作者单位： | 山东山大华天科技股份有限公司; |
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| 摘 要： | 有源电力滤波器是用于对三相电网的无功谐波进行动态补偿的装置,其中谐波和无功电流的准确、实时检测是决定有源电力滤波器补偿性能好坏的关键因素。本文首先简要介绍了三线四线制系统下的瞬时无功功率理论,阐述了p-q-o和i_p-i_q-i_o两种谐波检测方法的原理。通过对两种检测方法的稳态和暂态滤波性能,以及电网电压发生畸变的情况下的滤波性能进行综合比较,两种算法的稳态动态滤波性能都是较理想的,并且对中线电流抑制有较好的效果,但在电网电压发生畸变的情况下,i_p-i_q-i。检测法能准确地检测出谐波电流,而p-q-o检测法有明显的误差。
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| 关 键 词： | 瞬时功率 三相四线制 有源电力滤波器 谐波检测 |
A Study on the Comparison of Two Harmonics Detection Methods of Three-phase Four-wire System |
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| Zhang Jindou Gu Jianyong.A Study on the Comparison of Two Harmonics Detection Methods of Three-phase Four-wire System[J].THE WORLD OF INVERTERS,2011(9):130-133. |
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| Authors: | Zhang Jindou Gu Jianyong |
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| Affiliation: | Zhang Jindou Gu Jianyong |
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| Abstract: | Active power filter is a kind of device used for harmonics current detecting and reactive power compensation of three-phase power network.The compensating characters of active power filter depend on precision and real-time of harmonics and reactive power current detection.In this paper,instantaneous reactive power theory of three-phase fourwire system is introduced firstly,and the principle of p-q-o and i_p-i_q-i_o harmonics detection method is described.The steady-state and dynamic respond performance of t... |
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| Keywords: | Instantaneous power Three-phase four-wire Active power filter Harmonics detection |
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