参数失谐对基于滤波器的高压直流输电系统交流侧谐波电压测量的影响

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Abstract Measurement accuracy of AC harmonic voltage is important to ensure the operation safty of high voltage DC (HVDC) system and to validate the effectiveness of the AC filter design. This paper proposes a novel method to measure the harmonic voltage on AC side of HVDC system. The principle is measuring the current of the AC filter, and calculating the harmonic voltage on AC side according to the harmonic analysis from the measured current and the given impendence-frequency characteristic of the filter. The effects of AC filter component detuning on the measurement of harmonic voltage are studied in detail. The theoretical expressions for a double-tuning AC filter are deduced, to describe the relationship between the measurement error of harmonic voltage and the detuning degree of the filter parameters. The influence of detuning degree on the measurement of individual harmonic voltage is also analyzed. The relative sensitivities of the harmonic voltage measurement error to the filter component parameters are studied. Finally, the proposed method is verified by the simulation and lab test.

Key words： AC filter harmonic voltage high voltage DC sensitivity analysis parameter detuning

Published: 03 March 2016

PACS:

TM721

Fund:国家自然科学基金资助项目（51007065）

Corresponding Authors: 乐健男,1975年生,副教授,硕士生导师,研究方向为电能质量问题及其控制技术。E-mail: lej01@mails.tsinghua.edu.cn

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	Articles by authors
	Mao Tao
	Le Jian
	Huang Yinlong
	Luo Hanwu
	Liu Kaipei

Cite this article:

Mao Tao,Le Jian,Huang Yinlong等. The Influence of the Parameter Detuning on the AC Harmonic Voltage Measurement Based on Filter[J]. Transactions of China Electrotechnical Society, 2016, 31(4): 147-154.

URL:

https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2016/V31/I4/147

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