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Impacts of the SSSC control modes on small-signal and transient stability of a power system

机译:SSSC控制模式对电力系统小信号和暂态稳定性的影响

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摘要

In order to accomplish specific compensation objectives a static synchronous series compensator (SSSC) may be controlled by several ways. The most common control modes of the SSSC are: (1) constant voltage mode, (2) constant impedance emulation mode, and (3) constant power control mode. Moreover, to improve the dynamic performance of the system, a SSSC may be equipped with supplementary controllers, such as damping controls. Therefore, this paper investigates the impacts of different SSSC control modes on small-signal and transient stability of a power system. The performance of different input signals to the power oscillation damping (POD) controller is also assessed. The stability analysis and the design of the SSSC controllers are based on modal analysis, non-linear simulations, pole placement technique, and time and frequency response techniques. The results obtained allow to conclude that the usage of the SSSC in the constant impedance emulation mode is the most beneficial strategy to improve both the small-signal and transient stability.
机译:为了实现特定的补偿目标,可以通过几种方式来控制静态同步串联补偿器(SSSC)。 SSSC的最常见控制模式是:(1)恒定电压模式,(2)恒定阻抗仿真模式和(3)恒定功率控制模式。而且,为了改善系统的动态性能,SSSC可能配备有辅助控制器,例如阻尼控制。因此,本文研究了不同SSSC控制模式对电力系统的小信号和暂态稳定性的影响。还评估了到功率振荡阻尼(POD)控制器的不同输入信号的性能。 SSSC控制器的稳定性分析和设计基于模态分析,非线性仿真,磁极放置技术以及时间和频率响应技术。获得的结果可以得出结论,在恒定阻抗仿真模式下使用SSSC是同时改善小信号和瞬态稳定性的最有益策略。

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