Design of WAMS-Based Multiple HVDC Damping Control System
Design of WAMS-Based Multiple HVDC Damping Control System
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DOI：
10.1109/tsg.2011.2118773
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发表时间：
2011-04
影响因子：
9.6
通讯作者：
Wang Juanjuan;F. Chuang;Z. Yao
中科院分区：
文献类型：
--
作者：
Wang Juanjuan;F. Chuang;Z. Yao
高压直流输电（HVDC）系统是一种互联系统，具有可控性好、调节容量大、响应速度快等特点，在抑制区域间振荡方面具有电力系统稳定器（PSS）和柔性交流输电系统（FACTS）无法比拟的优势。本文提出了一种系统的、实用的设计多路直流阻尼控制系统的方法，其目的是提高某些区域间模式的阻尼，减少不同控制回路之间的相互影响。该方法首先利用基于残差分析的指标对具有良好目标模态可观测性的广域反馈信号进行预选。然后，候选控制回路之间的相互作用，其中的HVDC的设定功率参考作为输入和预选的广域信号作为输出，通过相对增益阵列（RGA）分析进行了研究。根据RGA的结果，确定了一个合适的多个HVDC阻尼控制器的输入输出配对。在暂态稳定程序和电磁暂态程序中，分别用Prony分析法确定了反馈信号预选和RGA计算中的传递函数留数。最后，阻尼控制器的参数进行了优化的时域仿真。最后以南方电网为例说明了该方法的应用。
High voltage direct current (HVDC) links are interties, characterized by good controllability, large adjustable capacity and fast responses, and have inherent advantage in damping interarea oscillations over power system stabilizers (PSS) and flexible alternating current transmission systems (FACTS). In this paper, a systematic and practical means to design the multiple HVDC damping control system, which aims to enhance the damping of certain interarea modes and minimize the interactions between different control loops, is provided. In the proposed procedure, the wide-area feedback signals that have the good observability of target modes are preselected by an index based on residue analysis firstly. Then the interactions between the candidate control loops, in which the setting power reference of the HVDC as the input and the preselected wide-area signals as the output, are investigated by relative gain array (RGA) analysis. According to the RGA results, a suitable input-output pairing for multiple HVDC damping controller is determined. The transfer function residues used in the feedback signal preselection and the RGA calculation are identified by Prony analysis in the transient stability program and electromagnetic transient program respectively. Finally, the damping controller parameters are optimized by time-domain simulations. The application in China Southern Power Grid (CSG) is illustrated as the case study.