Robustness of Damping Control Implemented by Energy Storage Systems Installed in Power Systems
Robustness of Damping Control Implemented by Energy Storage Systems Installed in Power Systems
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DOI：
10.1016/j.ijepes.2010.08.006
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发表时间：
2011
影响因子：
5.2
通讯作者：
W. Du;Haifeng F. Wang;Shijie Cheng;J. Wen;R. Dunn
中科院分区：
文献类型：
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作者：
W. Du;Haifeng F. Wang;Shijie Cheng;J. Wen;R. Dunn
安装在电力系统中的储能系统（ESS）可以通过控制ESS与电力系统之间的有功或无功功率交换来有效抑制电力系统振荡。本文研究了 ESS 实施的阻尼控制对电力系统运行条件变化的鲁棒性。它提出了一种基于著名的等面积准则和小信号稳定性分析的新分析方法。通过使用所提出的方法，本文得出结论，ESS通过控制其与电力系统的有功功率交换来实现阻尼控制，对于电力系统运行工况的变化具有鲁棒性。而如果通过控制ESS与电力系统的无功交换来实现阻尼控制，则阻尼控制的有效性会随着电力系统运行工况的变化而变化。本文介绍了一个安装电池储能系统（BESS）的电力系统示例。仿真结果证实了论文中关于 ESS 阻尼控制鲁棒性的分析结论。为了评估理论研究，对安装有 35kJ/7kW 超导磁储能 (SMES) 的物理电力系统进行了实验室实验。本文给出的结果表明，通过调节有功功率实现的 SMES 阻尼控制的有效性对于物理电力系统负载条件的变化具有鲁棒性。
An Energy Storage System (ESS) installed in a power system can effectively damp power system oscillations through controlling exchange of either active or reactive power between the ESS and power system. This paper investigates the robustness of damping control implemented by the ESS to the variations of power system operating conditions. It proposes a new analytical method based on the well-known equal-area criterion and small-signal stability analysis. By using the proposed method, it is concluded in the paper that damping control implemented by the ESS through controlling its active power exchange with the power system is robust to the changes of power system operating conditions. While if the ESS damping control is realized by controlling its reactive power exchange with the power system, effectiveness of damping control changes with variations of power system operating condition. In the paper, an example of power system installed with a battery ESS (BESS) is presented. Simulation results confirm the analytical conclusions made in the paper about the robustness of ESS damping control. Laboratory experiment of a physical power system installed with a 35kJ/7kW Superconducting Magnetic Energy Storage (SMES) was carried out to evaluate theoretical study. Results are given in the paper, which demonstrate that effectiveness of SMES damping control realized through regulating active power is robust to changes of load conditions of the physical power system.