【作者】 袁喆； 李咸善； 胡翔勇； 倪琼；

【Author】 Yuan Zhe Li Xian-shan Hu Xiang-yong Ni Qiong (College of Electrical Engineering and Information Science,China Three Gorges University,Hubei,Yichang,443002)

【机构】 三峡大学电气信息学院；

【摘要】 水电系统动态仿真即是水电系统动态安全分析与控制的基本工具,也是水电调度部分指导电力生产的主要依据,因此,动态仿真的准确度直接关系到水电系统的安全经济运行.此外,水电系统的非线性、不光滑的动态特性使得对它的分析变得十分困难.文中采用轨迹灵敏度方法对水电系统参数的不确定性对水电系统动态过程产生的影响进行分析.通过分析水电系统动态过程对其控制系统和励磁系统参数的灵敏度来分析其参数对整个水电力系统动态过程的影响.依据所提出的方法,以单机无穷大系统为例,分析了 IEEE-EA 型励磁系统,调速器参数对系统动态过程的影响,并对其动态特征进行了分析.更多还原

【Abstract】 Dynamic simulation is not only the basic tool for the analysis and control of hydroelectric systems dynamic security,but also the key reference of system operation in hydropower dispatching center.The accuracy of the dynamic simulation thus greatly influences the economical operation as well as the security of hydroelectric systems.It is difficulty to analyze the nonlinear no-smooth dynamics of hydroelectric systems.This paper presents the applications of trajectory sensitivity analysis on the hydroelectric systems t simulation.The application of trajectory sensitivity analysis on the excitation system and Governors of parameters is tested on the dynamics of hydroelectric systems.Based on the proposed method,taking the single machine against an infinite bus as an example,the papers further calculates the sensitivity of the hydrcelectric systems with respect to the parameters of an IEEE-EA type excitation system and governors and analyze its dynamic characteristics.更多还原