中国电力 ›› 2015, Vol. 48 ›› Issue (4): 90-94.DOI: 10.11930.2015.4.90

• 电网 • 上一篇    下一篇

多可控串补自适应协调控制设计

肖利武,祁桂刚,黎灿兵,曹一家,旷永红   

  1. 湖南大学 电气与信息工程学院,湖南 长沙 410082
  • 收稿日期:2015-02-27 出版日期:2015-04-25 发布日期:2015-12-03
  • 作者简介:肖利武(1987—),男,山东临沂人,硕士研究生,从事电网优化等研究。E-mail: xlwbeyond@163.com
  • 基金资助:
    This work is supported by National Science and Technology Support Program (2011BAA01B02).

Design of Adaptive Coordination Control of Multiple TCSC

XIAO Liwu, QI Guigang, LI Canbing, CAO Yijia, KUANG Yonghong   

  1. College of Electric and Information Engineering, Hunan University, Changsha 410082, China
  • Received:2015-02-27 Online:2015-04-25 Published:2015-12-03
  • Contact: 国家高科技支撑计划资助项目(2011BAA01B02)

摘要: 采用多可控串联补偿器(thyristor controlled series compensation,TCSC)联合运行可提高线路功率传输能力,但多TCSC联合运行时所存在的交互影响可能导致系统暂态稳定性下降。设计一种新的自适应控制方案,动态自适应调整多个TCSC联合运行时的参数,以规避多TCSC的负交互影响。利用能量函数分析多TCSC协调控制规律,然后通过微分观测器引入微分信号,再将专家控制和神经网络引入自适应控制,动态调整PID(proportion integral differential)参数。通过在一个装设2台TCSC的4机2区域系统的仿真验证,并和PI控制、BP-PI控制进行对比,结果表明,所设计的自适应控制器在提高系统暂态稳定性方面,具有一定的优越性。

关键词: 可控串补(TCSC), 暂态稳定, 神经网络, 自适应协调控制, FACTS, PID

Abstract: The coordinated operation of multiple thyristor controlled series compensator(TCSC) can improve the capability of the power transmission. However, the mutual effects of TCSCs may decrease the transient stability. In this paper, a new adaptive control scheme is designed through dynamic adaptive adjustment of the parameters of multiple TCSCs to avoid the negative interactions of TCSCs. By using energy function to evaluate the stability of the TCSC, a differential observer adaptive TCSC controller is then designed, which uses expert controller and neural network to adaptively adjust the proportion integral differential(PID) parameters. The effectiveness of the proposed control scheme was demonstrated through simulating a two-area and four-machine power system. A comparison of the proposed controller, the adaptive FACTS controller and the BP-PI controller (back propagation-proportional integral controller) was conducted, which shows that the adaptive FACTS controller can improve the transient stability of power system.

Key words: TCSC, transient stability, neural network, adaptive coordination control, FACTS, PID

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