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| 摘要: |
| 300MW机组工程设计中，为减少占地面积，降低工种造价，广泛彩了真空接触器加高压熔断器组成的F－C回路。由于真空接触器开断电流小，由其实现控制功能，而高压熔断器则实现短路保护功能，为了保证短路时微机保护装置的正确动作，须对定值进行合理配置。就现场对WCB－3型微机变压器保护整定提供的理论依据，通过合理定值实现上、下组保护间的有效配合，使WCB－3型微机变压器保护配合F－C取得理想效果。 |
| 关键词: 变压器 F－C回路 微机保护 整定 WCB－3型 |
| DOI： |
| 分类号:TM403.5 |
| 基金项目: |
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| Setting of Type WCB-3 Microprocessor-Based Transformer Protection |
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CAI Guang de
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| Abstract: |
| The F?C circuit composed of vacuum contactor and H?V fuse is widely used in 300 MW unit engineering design to reduce the occupied area and project cost.The vacuum contactor is used to realize the control function because of its small open current,while the H?V fuse is used to realize the S?C protection function.The microprocessor based protection must be set properly to ensuer its correct functioning for short circuit fault.The setting principles of type WCB?3 microprocessor based transformer protection are given.By rational setting,the effective coordination between protections at upper and lower levels and between type WCB?3 microprocessor based transformer and F?C is realized. |
| Key words: transformer,F?C circuit,microprocessor based protection,setting, |
