| 负荷模型动态特性不确定性对低频振荡的影响 |
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| 引用本文： | 孙衢,徐光虎,陈陈.负荷模型动态特性不确定性对低频振荡的影响[J].电力系统自动化,2003,27(10):11-14,66. |
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| 作者姓名： | 孙衢 徐光虎 陈陈 |
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| 作者单位： | 上海交通大学电子信息与电气工程学院,上海市,200030 |
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| 基金项目： | 国家重点基础研究专项经费资助项目 (G1 9980 2 0 30 0 )~~ |
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| 摘 要： | 对电力负荷的动态特性对低频振荡的影响进行研究。采用由1个感应电动机与1个静态负荷并联而成的综合负荷模型，考虑在建模过程中存在负荷参数辨识误差及负荷特性估计的不准确造成的不确定性，研究动态负荷所占比例和电动机惯性时间常数对电力系统低频振荡频率和阻尼的影响。通过对一个4机2区域系统的典型实例进行研究分析，得出了一些有意义的结论。
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| 关 键 词： | 电力系统 负荷模型 动态特性 不确定性 低频振荡 电网 |
| 收稿时间： | 1/1/1900 12:00:00 AM |
| 修稿时间： | 1/1/1900 12:00:00 AM |
EFFECTS OF UNCERTAINTIES IN COMPOSITE LOAD MODELS ON LOW-FREQUENCY OSCILLATIONS IN ELECTRIC POWER SYSTEMS |
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| Sun Qu,Xu Guanghu,Chen Chen.EFFECTS OF UNCERTAINTIES IN COMPOSITE LOAD MODELS ON LOW-FREQUENCY OSCILLATIONS IN ELECTRIC POWER SYSTEMS[J].Automation of Electric Power Systems,2003,27(10):11-14,66. |
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| Authors: | Sun Qu Xu Guanghu Chen Chen |
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| Abstract: | The effect of dynamic characteristics of load model on low frequency oscillations in power systems is presented. The composite load model, which consists of an induction motor and a static load in parallel, is adopted with taking into account uncertainties in the load modeling due to load parameters identification error, load characteristic estimation error and so on. The effects of the proportion of dynamic load and the inertia constant of induction motor on the frequency and damping of low frequency oscillations are studied in detail. A typical example of a two area four machine interconnected power system is given and some valuable conclusions are drawn. |
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| Keywords: | small signal stability composite load model dynamic load low frequency oscillation uncertainty |
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