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| 摘要: |
| 提出超高压线路在短路电流出现时作为干扰源向周围空间传播电磁干扰的物理特性。介绍了在电磁感应耦合作用下，控制电缆芯线上产生的感应电势的实测方法和计算方法；电缆芯上的感应电势是怎样在继电保护控制回路上形成通道而产生破坏力的；直流继电器对工频电压的响应；电磁干扰所造成的破坏；以及防止电磁干扰破坏的改进措施。 |
| 关键词: 输电线路 超高压线路 短路电流 电缆 电磁干扰 |
| DOI： |
| 分类号:TM726.1 |
| 基金项目: |
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| Electromagnetic Interference to Control Cable Caused by Short Circuit Current from Super High Voltage Power Line |
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MO Fei bing
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| Abstract: |
| When short circuit current arises in super high voltage power line,electromagnetic interference caused by it will transmit to space.Its characteristics are discussed.Because of the induction,inductive electromotance will be generated on control cable core.Its measuring and calculating methods are introduced.The close circuit formed together with protection control circuit is analyzed,through which the inductive electromotance makes damage,and the response of direct current relay to 50 Hz voltage is introduced.The improvement measures to prevent the damages from electromagnetic disturbance are given. |
| Key words: electromagnetic disturbance,inductive electromotance,closed circuit,mutual inductance coefficient, |
