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首页> 外文会议>2000 International Conference on Power System Technology >Study of STATCOM Control for Power Swings Damping Improvement
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Study of STATCOM Control for Power Swings Damping Improvement

机译：STATCOM控制改善动力摆幅的研究

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The inherent low-frequency inter-area oscillations in power system is lightly-damped usually. FACTS provides an effect way to improve the damping of such swings since it is capable of regulating the elements in transmission system directly. This paper, with the background of the first Chinese +-20Mvar STATCOM development in Henan Power Grid, presents comprehensive analysis and design of STATCOM-based damping control system. Some possible local input signals for the damping controller are evaluated through controllability, observability and self-interaction gain calculations at first. The local voltage compensated by STATCOM output current and driving-point reactance is elected considering the power flow varying of Henan Power Grid in different seasons. The controller gain is tuned through root locus analysis. Simulations with different local inputs are carried out and the results are in consistent with the analytical conclusions. A method for online driving-point reactance identification is also proposed to improve the robustness of the damping controller.
机译：电力系统中固有的低频区域间振荡通常是轻微阻尼的。 FACTS提供了一种有效的方法来改善这种摆动的阻尼，因为它能够直接调节传动系统中的元件。本文以河南电网首次在中国开发+ -20Mvar STATCOM为背景，对基于STATCOM的阻尼控制系统进行了综合分析和设计。首先通过可控性，可观察性和自交互增益计算来评估阻尼控制器的一些可能的本地输入信号。考虑河南电网在不同季节的潮流变化，选择由STATCOM输出电流和驱动点电抗补偿的局部电压。控制器增益可通过根源分析进行调整。进行了具有不同本地输入的仿真，结果与分析结论相符。还提出了一种在线驱动点电抗识别的方法，以提高阻尼控制器的鲁棒性。

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