| 功率负荷不平衡下变频率OPC控制 |
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| 引用本文： | 罗嘉,李军,张红福.功率负荷不平衡下变频率OPC控制[J].电力系统及其自动化学报,2011,23(3):131-134. |
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| 作者姓名： | 罗嘉 李军 张红福 |
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| 作者单位： | 1. 广东电网公司电力科学研究院,广州,510600
2. 广州粤能电力科技开发有限公司,广州,510600 |
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| 摘 要： | 基于电网频率动态特性来整定发电机组超速保护控制(OPC)定值进行机网协调是目前关注的热点,多数解决方案是局部地区不同机组采用不同OPC定值.文中另辟蹊径以珠海电厂700 MW机组为实例,详细分析了该机组可适应不同电网频率改变汽轮机OPC动作设定值的控制方式,即功率负荷不平衡在0%～30%区间采用定值OPC控制,30%～...
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| 关 键 词： | 超速保护 电网频率 功率不平衡 机网协调 变频率 |
Multi-frequency Over-speed Protection Control with Power-load Imbalance |
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| LUO Jia,LI Jun,ZHANG Hong-fu.Multi-frequency Over-speed Protection Control with Power-load Imbalance[J].Proceedings of the CSU-EPSA,2011,23(3):131-134. |
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| Authors: | LUO Jia LI Jun ZHANG Hong-fu |
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| Affiliation: | 1.Guangdong Power Test & Research Institute,Guangzhou 510600,China; 2.Guangzhou Yueneng Power Science and Technology Ltd Co,Guangzhou 510600,China) |
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| Abstract: | Based on dynamic characteristics analysis of frequency,machine-network cordination is a hotspot in conforming the value of OPC action setpoint.Most of scheme use different OPC action setpoint in specifical district for different power plant usits.In order to insure the security of turbine and steady operation of grid,a multi-frequency over-speed protection control was proposed with Zhuhai power plant 700 MW unit.In power-load imbalance range of 0%~30%,mode is fixed value control;range of 30%~60%,mode is multi-value control;and above 60% range,OPC action is absolute.Practical applications show that the proposed strategy is effective for response to fluctuation is grid frequency and turbine speed increase control after load rejection. |
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| Keywords: | over speed protection grid frequency power-load imbalance machine-network cordination multi-frequency |
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