基于阻尼转矩分析法的广域阻尼控制器设计 the study of design of wide area damping controllers based on dta method.pdfVIP

第41 卷 第7 期 电力系统保护与控制 Vol.41 No.7 2013 年4 月1 日 Power System Protection and Control Apr.1, 2013 基于阻尼转矩分析法的广域阻尼控制器设计 陈 中, 胡吕龙 （东南大学电气工程学院，江苏 南京 210096） 摘要：阻尼转矩分析方法（DTA ）是建立在发电机转子运动所获得的阻尼转矩这一概念，物理意义清晰。将阻尼转矩分析法 扩展至时滞电力系统，推导了广域阻尼控制器（WADC ）考虑时滞时的 DTA模型。基于全系统 DTA 模型研究了时滞 WADC 对系 统阻尼的影响机理，提出了时滞特性表征指标。在此基础上，从广域时滞信号的选择和控制器参数整定两个方面，推导了考 虑时滞影响时 WADC 的配置方法。通过算例阐述了 WADC 的配置优化过程，并得到了时滞特性对 WADC 角度影响强度要明显大 于放大倍数影响的结论，也证明了基于 DTA 的计及时滞的广域阻尼控制器的配置方法的正确性和可行性。 关键词：小干扰稳定；阻尼转矩法；广域阻尼控制；时滞 The study of design of wide area damping controllers based on DTA method CHEN Zhong, HU Lü-long (School of Electrical Engineering, Southeast University, Nanjing 210096, China) Abstract ：The concept of damping torque analysis (DTA) is established on the basis of the generator rotor movement, and its physical meaning is clear. This paper extends the damping torque analysis to power systems with time delays, derives the DTA model of wide-area damping controller considering the time delay, studies the mechanism of the impact of wide-area damping controller on system damping with time delay, and proposes the time delay characteristic representation index. On this basis, from two aspects of the wide-area delay signal’s selection and the controller parameters tuning, the configuration of wide-area damping controller considering time delay is derived, the WADC’s configuration optimization process is described by examples, and it is concluded that the delay’s impact on controller’s angle seem to be greater than on the controller’s magnification. It also proves