| 220 kV主变压器高压侧断路器失灵保护的若干问题分析 |
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| 引用本文： | 贺春,李鑫. 220 kV主变压器高压侧断路器失灵保护的若干问题分析[J]. 电力系统保护与控制, 2010, 38(1): 102-106 |
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| 作者姓名： | 贺春 李鑫 |
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| 作者单位： | 1.天津高压供电公司，天津 300250;2.天津职业大学，天津 300402 |
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| 摘 要： | 从变压器启动失灵保护的特点出发，主要对220 kV主变压器高压侧断路器启动失灵保护回路、失灵保护跳主变断路器回路、电流元件相关外敷CT位置选择及主变代路时存在的问题进行了详细分析。在此基础上给出了能够适应主变压器代路方式的一种解决方案。
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| 关 键 词： | 变压器；失灵保护；代路 |
Analysis of some problems on 220kV circuit breaker failure protection of main transformer high-voltage side |
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| HE Chun ,LI Xin. Analysis of some problems on 220kV circuit breaker failure protection of main transformer high-voltage side[J]. Power System Protection and Control, 2010, 38(1): 102-106 |
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| Authors: | HE Chun LI Xin |
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| Affiliation: | 1.Tianjin High Voltage Power Supply Company;Tianjin 300250;China;2.Tianjin Vocational Institute;Tianjin 300402;China |
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| Abstract: | In this paper,the characteristics of transformer breaker failure protection are discussed first.Based on it,a perfect solving scheme is detailedly presented which includes the start-up circuits,the lockout release circuits,and the tripping circuits about both main transformer and bypassing transformer.By the way,the use of CT to transformer including bushing CT and external CT is analyzed in different locations in the vicinity of the short-circuit fault. |
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| Keywords: | transformer circuit breaker failure protection bypassing |
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