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计及调速器特性的低频切负荷方案的设计及分析
引用本文:何恒靖,常喜强,解大,姚秀萍.计及调速器特性的低频切负荷方案的设计及分析[J].电力科学与工程,2009,25(7):25-30.
作者姓名:何恒靖  常喜强  解大  姚秀萍
作者单位:1. 上海交通大学,电气工程系,上海,200040
2. 上海交通大学,电气工程系,上海,200040;新疆电力公司,新疆,乌鲁木齐,830002
3. 新疆电力公司,新疆,乌鲁木齐,830002
摘    要:采用计及调速器的发电机经典模型,设计不同的低频减载方案,并对这些方案在不同系统功率缺额下进行低频减载频率变化的动态仿真来研究计及调速器时低频切负荷频率响应特性。定义了描述系统频率变化特性的指标参数,基于这些参数对仿真得出的频率响应特性曲线进行了定量分析和比较,讨论了切负荷方案设计中动作频率的整定对切负荷效果的影响。最后总结出了在计及调速器时低频切负荷方案设计中动作频率整定应遵循的规律,并给出了切负荷方案与发电机调速器相互协调、配合的关系。

关 键 词:低频减载  调速器  方案整定  超调  调整时间  电力系统  

Design and Analysis of Under Frequency Load-shedding Schemes Concerning Governor
He Hengjing,Chang Xiqiang,Xie Da,Yao Xiuping.Design and Analysis of Under Frequency Load-shedding Schemes Concerning Governor[J].Power Science and Engineering,2009,25(7):25-30.
Authors:He Hengjing  Chang Xiqiang  Xie Da  Yao Xiuping
Affiliation:1.Department of Electrical Engineering;Shanghai Jiaotong University;Shanghai 200240;China;2.Xinjiang Electrical Power Company;Urumchi 830002;China
Abstract:Based on the classical generator model with governor some typical UFLS(Under Frequency Load Shedding)schemes were designed and system frequency response of these scenarios was analyzed under different load demands.Dynamic simulation was carried out to analyze the UFLS frequency characteristics concerning governor.Parameters used for describing identities of frequency response curves were defined in order to analyze andcompare the simulation results quantitatively.The relationship between Frequencythresholds...
Keywords:under frequency load shedding  governor  scheme design  overshoot  regulating time  
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