Coupled Harmonic Admittance Identification Based on Least Square Estimation

Yaqiong Li, Zhanfeng Deng, Tongxun Wang, Guoliang Zhao and Shengjun Zhou
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Yaqiong Li: State Key Laboratory of Advanced Power Transmission Technology, Global Energy Interconnection Research Institute (GEIRI), Beijing 102209, China
Zhanfeng Deng: State Key Laboratory of Advanced Power Transmission Technology, Global Energy Interconnection Research Institute (GEIRI), Beijing 102209, China
Tongxun Wang: State Key Laboratory of Advanced Power Transmission Technology, Global Energy Interconnection Research Institute (GEIRI), Beijing 102209, China
Guoliang Zhao: State Key Laboratory of Advanced Power Transmission Technology, Global Energy Interconnection Research Institute (GEIRI), Beijing 102209, China
Shengjun Zhou: State Key Laboratory of Advanced Power Transmission Technology, Global Energy Interconnection Research Institute (GEIRI), Beijing 102209, China

Energies, 2018, vol. 11, issue 10, 1-15

Abstract: Norton equivalent circuit is a commonly used model in estimating harmonic current emissions of harmonic sources. It however cannot reflect the mutual coupling relationships among voltage and current in different harmonic orders. This paper proposes a new method to identify parameters in a coupled harmonic admittance model. The proposed method is conducted using voltage and current measurements and is based on least square estimation technique. The effectiveness of the method is verified through time-domain simulations for a grid-connected converter and also through field data obtained from a ±800 kV converter station. The experimental results showed that the proposed method presents higher accuracy in terms of harmonic current emission estimation compared with three Norton-base methods.

Keywords: harmonic admittance; Norton model; harmonic state estimation; recursive parameter identification (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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