Study on Coordinated Control Strategy of Reactive Power Compensation Device in DC Converter Station with New-generation Synchronous Condensers

2018 International Conference on Power System Technology (POWERCON) Pub Date : 2018-11-01 DOI:10.1109/POWERCON.2018.8602002

Xiao Fan, Zhou You-bin, R. Lin, Zhou Kunpeng, W. Tao, Cao Kan

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引用次数: 8

Abstract

In order to meet the higher demand of dynamic reactive power support is put forward in the UHV DC power transmission project, the new-generation synchronous condensers are applied in the UHV DC/AC. However, the excitation system of the new-generation synchronous condensers and the reactive power compensation device of the DC converter station are controlled individually, and there is no reasonable coordination strategy. Therefore, the transient reactive power support capability of the synchronous condenser is analyzed in this paper considering with excitation control characteristics. Then, the transient reactive power demand of the HVDC transmission system is also analyzed. Based on this, the coordinated control strategy of the reactive power compensation device in DC converter station with synchronous condensers are proposed, and a coordinated control system is given in this paper. Finally, the simulation model of the new-generation synchronous condensers access to UHV DC power grids are built based on the PSCAD software. The digital simulation results validate the proposed coordinated control strategy.

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新一代同步冷凝器直流换流站无功补偿装置协调控制策略研究

为满足特高压直流输电工程对动态无功支持提出的更高要求，在特高压直流/交流中应用了新一代同步电容器。但新一代同步凝汽器励磁系统与直流换流站无功补偿装置是单独控制的，没有合理的协调策略。因此，本文在考虑励磁控制特性的情况下，对同步电容器的暂态无功支撑能力进行了分析。然后，对直流输电系统的暂态无功需求进行了分析。在此基础上，提出了带同步凝汽器的直流换流站无功补偿装置的协调控制策略，并给出了协调控制系统。最后，基于PSCAD软件建立了新一代同步冷凝器接入特高压直流电网的仿真模型。数字仿真结果验证了所提出的协调控制策略。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2018 International Conference on Power System Technology (POWERCON)

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