| 计及频率差变化率的低频减载方案的研究 |
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| 引用本文： | 常喜强,何恒靖,解大,姚秀萍,艾芊. 计及频率差变化率的低频减载方案的研究[J]. 电力系统保护与控制, 2010, 38(4): 68-73 |
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| 作者姓名： | 常喜强 何恒靖 解大 姚秀萍 艾芊 |
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| 作者单位： | 1.上海交通大学电气工程系，上海 200240；2.新疆电力公司，新疆 乌鲁木齐 830000 |
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| 摘 要： | 通过分析计及调速器的发电机经典模型，推导出频率差变化率与系统有功功率缺额之间的定量关系。简要介绍了基于上述关系的自适应和半适应低频减载方案。设计了基于实时频率差变化率的切负荷自适应方案，并通过在不同负荷缺额下进行切负荷仿真来比较和分析自适应方案与半适应、传统方案的切负荷性能差异。总结出了在不同功率缺额下三种方案的切负荷特性。为更深入研究计及频率差变化率的低频减载效果，单独对不同的自适应方案进行了仿真分析。给出了计及频率偏差变化率的自适应方案在低频减载中的优势，由此得出低频减载方案设计整定中应遵循的规律。
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| 关 键 词： | ROCOF；低频减载；自适应方案；半适应方案；电力系统 |
Study on under frequency load shedding schemes concerning ROCOF |
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| CHANG Xi-qiang,,HE Heng-jing,XIE Da,YAO Xiu-ping,AI Qian. Study on under frequency load shedding schemes concerning ROCOF[J]. Power System Protection and Control, 2010, 38(4): 68-73 |
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| Authors: | CHANG Xi-qiang HE Heng-jing XIE Da YAO Xiu-ping AI Qian |
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| Affiliation: | 1. Electrical Engineering Department;Shanghai JiaoTong University;Shanghai 200240;China;2. Xinjiang Electrical Power Company;Urumqi 830000;China |
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| Abstract: | By analyzing classical generator model with governor,the equation of rate of change of frequency(ROCOF) and the load shortage under turbine model is deduced.Adaptive and semi-adaptive under frequency load shedding(UFLS) scenario based on the relationship above are briefly introduced.Adaptive schemes based on real time ROCOF calculation are designed.Computer simulation is used to compare the behavior of the adaptive schemes when selecting different percentages of load to be disconnected with the traditional ... |
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| Keywords: | ROCOF UFLS adaptive scheme semi-adaptive scheme power system |
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