220kV变压器附加绕组专接滤波器的谐波治理方案

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Abstract Due to mainly supply power to non-linear load, harmonic pollution is very serious in some 220kV substations. The traditional solution is connecting the LC filters to the low voltage side, which can suppress harmonic and compensate reactive power. Because of the constraint of low-voltage winding’s equivalent impedance, this filtering method is not very effective. A new program of harmonic suppression in 220kV substation is presented in this paper. In this program, an independent additional transformer winding is used to connect filters, whose equivalent impedance is specially designed to zero. Principles of traditional and new filtering method are derived, and the superiority of the new program is analyzed. A 180MVA 220kV three-phase transformer is designed which contains an additional winding whose equivalent impedance is about zero. A field-circuit coupled simulation model is build based on Ansoft software. In the final, the laboratory prototype is tested. The simulation and testing results verify the good filtering effect of the new program.

Key words： 220kV substation harmonic suppression additional winding equivalent impedance

Received: 22 April 2013 Published: 23 March 2015

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TM72

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	Articles by authors
	Wang Can
	Luo Longfu
	Chen Yuehui
	Zhou Guandong
	Li Xiaofang
	Xu Jiazhu
	Li Yong

Cite this article:

Wang Can,Luo Longfu,Chen Yuehui等. A Program of Harmonic Suppression with Filters Connected to the 220kV Transformer’s Additional Winding[J]. Transactions of China Electrotechnical Society, 2015, 30(1): 186-194.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2015/V30/I1/186

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