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煤矿35 kV变电站差动保护及其预防误动研究 被引量:1
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作者 郝嘉伟 《机械工程与自动化》 2021年第2期199-200,共2页
分析了煤矿35 kV变电站主变压器差动保护原理,介绍了THT-203型变压器差动保护装置的功能,在分析差动保护误动作原因的基础上,总结了工作中预防差动保护误动作的管理措施,包括严格制定差动保护制动方案、加强变压器验收管理、加强差动保... 分析了煤矿35 kV变电站主变压器差动保护原理,介绍了THT-203型变压器差动保护装置的功能,在分析差动保护误动作原因的基础上,总结了工作中预防差动保护误动作的管理措施,包括严格制定差动保护制动方案、加强变压器验收管理、加强差动保护定值管理和严格且规范执行变压器负荷测试等。 展开更多
关键词 煤矿35 kV变电站 预防误动 保护
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电力继电保护中的故障与对策分析
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作者 李士洲 陶英健 《集成电路应用》 2024年第8期162-163,共2页
阐述针对电力系统继电保护的故障原因,提出故障的处理措施,包括误动预防措施、失灵预防措施、开关拒合故障处理。分析继电保护装置的运行原理,并应及时处理故障。
关键词 继电保护装置 预防措施 开关拒合故障
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Risk analysis of dynamic control of reservoir limited water level by considering flood forecast error 被引量:16
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作者 ZHANG YanPing WANG GuoLi +1 位作者 PENG Yong ZHOU HuiCheng 《Science China(Technological Sciences)》 SCIE EI CAS 2011年第7期1888-1893,共6页
Flood control forecast operation mode is one of the main ways for determining the upper bound of dynamic control of flood limited water level during flood season. The floodwater utilization rate can be effectively inc... Flood control forecast operation mode is one of the main ways for determining the upper bound of dynamic control of flood limited water level during flood season. The floodwater utilization rate can be effectively increased by using flood forecast information and flood control forecast operation mode. In this paper, Dahuofang Reservoir is selected as a case study. At first, the distribution pattern and the bound of forecast error which is a key source of risk are analyzed. Then, based on the definition of flood risk, the risk of dynamic control of reservoir flood limited water level within different flood forecast error bounds is studied. The results show that, the dynamic control of reservoir flood limited water level with flood forecast information can increase the floodwater utilization rate without increasing flood control risk effectively and it is feasible in practice. 展开更多
关键词 flood forecast error flood control forecast operation mode dynamic control of flood limited water level risk analysis Dahuofang Reservoir
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