| 母线差动保护电流互感器断线闭锁功能存在问题及其改进方法 |
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| 引用本文： | 曹建东,张弛,李一泉.母线差动保护电流互感器断线闭锁功能存在问题及其改进方法[J].广东电力,2012,25(4):81-83,87. |
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| 作者姓名： | 曹建东 张弛 李一泉 |
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| 作者单位： | 广东电网电力调度控制中心,广东广州,510600 |
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| 摘 要： | 介绍和分析母线差动（简称母差）保护电流互感器（currenttransformer，CT）和支路CT的断线情况及断线告警和闭锁功能复归方式存在的问题及改进方法，母差保护支路CT不平衡判据存在的问题及改进方法，母差保护CT断线闭锁相别选择存在的问题及改进方法；目的是提高母差保护的整体性能，保障电力系统的安全稳定运行。
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| 关 键 词： | 母线差动保护 电流互感器 告警和闭锁功能 复归方式 |
Problems in Wired-break Blocking Function of CT of Bus Differential Protection and the Improvement |
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| CAO Jiandong
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ZHANG Chi
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LI Yiquan.Problems in Wired-break Blocking Function of CT of Bus Differential Protection and the Improvement[J].Guangdong Electric Power,2012,25(4):81-83,87. |
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| Authors: | CAO Jiandong ZHANG Chi LI Yiquan |
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| Affiliation: | (Dispatching and Control Center of Guangdong Power Grid Corporation,Guangzhou,Guangdong 510600,China) |
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| Abstract: | This paper introduces and analyzes breakage in current transformer(CT) of bus differential(BD for short) protection and subcircuit CT,problems and improvement of resetting mode of breakage alarming and blocking,imbalance of subcircuit CT of bus differential protection and phase selection of wired-break blocking of CT of bus differential protection,for the purpose of improving overall performance of bus differential protection and ensuring safe and stable operation of power system. |
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| Keywords: | bus differential protection current transformer alarming and blocking function resetting mode |
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