权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

System Development for on-Line Evaluation of Power Systems Through a Non-Lure Type Lyapunov Function

通过非诱饵型李亚普诺夫函数进行电力系统在线评估的系统开发

基本信息

批准号：
63550219
负责人：
MIYAGI Hayao
金额：
$ 1.47万
依托单位：
University of the Ryukyus
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1988
资助国家：
日本
起止时间：
1988 至 1990
项目状态：
已结题

项目摘要

1. The flux decay causes a product-type nonlinearity in the formulation of the electrical power output, and the conventional Lure-type Lyapunov function can not be well adapted for such a product-type nonlinear system. This report presents a way of constructing extended Lyapunov function for the product-type nonlinear system.2. The report proposes a method of analyzing robust stability of nonlinear system through the direct method of Lyapunov, in order to cope with both ambiguity of the system parameters due to successive variation of power system loads and estimation errors in the system identifications.3. The main factor which affects on the power system stability is synchronous machine. Then, in this report, methods are presented for analyzing hunting and pulling-into-step phenomena and improving the synchronization of synchronous machines, utilizing Lyapunov functions.4. A useful method for improving stability of power system is on-off control utilizing damping resistor. This report gives a way of deciding optimal on-off timing of the resistor, using Lyapunov function.5. In order to realize the on-line evaluating system for power system stability, the state variable such as phase angle of generator must be measured. This research has made a trial production of a measuring device of phase angle of generator.6. A microcomputer-based on-line transient stability evaluation system for power systems using a non-Lure type Lyapunov function has been accomplished in the report. The Lyapunov function is constructed by the Lagrange-Charpit method. A software for controlling power system has also been developed. The experimental results show that this evaluation system can act satisfactorily for controlling stability of power system.

1.磁通衰减导致电功率输出公式中出现乘积型非线性，而传统的路尔型李亚普诺夫函数不能很好地适应这种乘积型非线性系统。该报告提出了一种构造乘积型非线性系统的扩展Lyapunov函数的方法。 2．报告提出了一种通过李亚普诺夫直接法分析非线性系统鲁棒稳定性的方法，以应对电力系统负荷连续变化导致的系统参数模糊性和系统辨识中的估计误差。 3．影响电力系统稳定性的主要因素是同步机。然后，在本报告中，提出了利用李亚普诺夫函数分析振荡和同步现象以及改进同步机同步的方法。 4．提高电力系统稳定性的一种有用方法是利用阻尼电阻进行开关控制。该报告给出了一种使用 Lyapunov 函数来决定电阻器最佳开关时序的方法。5。为了实现电力系统稳定性在线评估系统，必须测量发电机相位角等状态变量。本研究试制了一种发电机相角测量装置。 6．该报告完成了基于微机的非Lure型Lyapunov函数的电力系统暂态稳定在线评估系统。 Lyapunov 函数是通过 Lagrange-Charpit 方法构造的。还开发了用于控制电力系统的软件。实验结果表明，该评价体系对于电力系统稳定性控制具有良好的效果。