Nonlinear adaptive control of TCSC to improve the performance of power systems
Nonlinear adaptive control of TCSC to improve the performance of power systems
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DOI：
10.1049/ip-gtd:19990047
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发表时间：
1999-05-01
期刊：
影响因子：
--
通讯作者：
Liang, J
中科院分区：
文献类型：
--
作者：
Zhou, XX;Liang, J
东北电网伊敏-冯屯500 kV输电线路拟装设可控串补（TCSC）。为了提高系统的暂态稳定性和动态性能，作者提出了一种非线性控制方案的TCSC。控制方案是由采用非线性理论，微分几何理论。因此，它可以反映电力系统的非线性，具有较好的适应性。为了减小TCSC装置运行限制的影响，如金属氧化物压敏电阻（MOV）的电压保护限制或晶闸管的触发角限制，采用了自适应的控制器参数选择策略。因此，在任何功率传输水平，可以获得满意的性能的电力系统的控制方案。提出了一种局部控制方法，使得所有的输入变量都可以在局部容易地获得。仿真结果证明了非线性自适应控制策略的有效性。
The installation of thyristor controlled series compensation (TCSC) is planned in the Yimin-Fengtun 500kV transmission lines of the Northeast China power system. To improve the transient stability and dynamic performance of the system, the authors present a nonlinear control scheme for the TCSC. The control scheme is derived by employing a nonlinear theory, the differential geometry theory. Thus, it can reflect the nonlinearity of power systems and has better adaptability. To reduce the influence of operation limitations of the TCSC equipment, such as limitation owing to the voltage protection of the metal oxide varistor (MOV), or the firing-angle of thyristors, an adaptive strategy of choosing parameters of the controller is applied. Thus, in any power transfer level, satisfactory performance of the power system can be acquired with the control scheme. A local control approach is also proposed so that all input variables can be obtained locally and easily. Simulations have proved the effectiveness of the nonlinear adaptive control strategy.