Virtual series impedance emulation control for remote PV or wind farms

This paper proposes a virtual series impedance emulation control strategy for current controlled remote PV or wind farms, in order to enhance the power transfer capability of the transmission line. This approach can be regarded as integrating the functions of the FACTS devices, such as series capaci...

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Main Authors: Wenchao Cao, Yiwei Ma, Jingxin Wang, Wang, Fred
Format: Conference Proceeding
Language:English
Subjects:
Capacitors
Emulation
Impedance
Inverters
Power transmission lines
Reactive power
Voltage control
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creator Wenchao Cao
Yiwei Ma
Jingxin Wang
Wang, Fred
description This paper proposes a virtual series impedance emulation control strategy for current controlled remote PV or wind farms, in order to enhance the power transfer capability of the transmission line. This approach can be regarded as integrating the functions of the FACTS devices, such as series capacitors, into the grid-side converters of PV or wind farms, by utilizing the reactive power capability of the converters. First, the virtual series impedance emulation control strategy for PV or wind farms in both the operation mode with P and Q control and the operation mode with P and V control is described. Then the capability of virtual impedance emulation is analyzed, considering the converter limitations and plant-level limitations. Comparison with physical series capacitors is carried out to investigate the impact of the proposed method on the grid-side converter design. The effectiveness of the proposed methods is verified by both simulation and experiments.
doi_str_mv 10.1109/APEC.2014.6803341
format conference_proceeding
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subjects Capacitors
Emulation
Impedance
Inverters
Power transmission lines
Reactive power
Voltage control
title Virtual series impedance emulation control for remote PV or wind farms
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