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| 摘要: |
| 变压器35kV侧中性点一般经过消弧线圈等阻抗元年接地或乾不接地，属于小接地电流系统，针对运行方式变化或其它锈导条件出现的，35kV等小接地电流系统可能产生谐振过电压，以一次十分典型的因气候变化而引起的35kV谐振过电压的事例，探讨消除小接地电流系统谐振的一种方法，此方法节约了加装消弧线圈的费用，经过一年经验未发生未谐振，效果比较好。 |
| 关键词: 35kV电网 谐振 小接地电流系统 过电压 消弧线圈 |
| DOI： |
| 分类号:TM727 |
| 基金项目: |
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| Discussion on method of resonance over-voltage elimination in 35 kV electric network |
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LI Xiao-yin 1 ZHANG Ping-yang 1 YAN An-he 2
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| Abstract: |
| Generally, the central point at 35 kV-side of transformer is grounding via the impedance element of arc-extinction coil,or not grounding,it is the system of small grounding current. When operating mode change or other inducing conditions occur, the resonance over-voltage may happen in 35 kV electric network. With a typical incident of resonance over-voltage caused by weather change, a method of resonance over-voltage elimination is discussed, which needs not the arc-extinction coil.Its better effect is proved by one year's operation. |
| Key words: system of small grounding current,resonance,over-voltage,elimination, |
