| 山区35kV补偿电网消弧线圈投切运行的暂态分析(英文) |
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| 引用本文： | 袁涛,司马文霞,冉锐.山区35kV补偿电网消弧线圈投切运行的暂态分析(英文)[J].高电压技术,2008,34(12):2626-2630. |
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| 作者姓名： | 袁涛 司马文霞 冉锐 |
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| 作者单位： | State Key Laboratory of Power Transmission Equipment & System Security and New Technology,Chongqing University |
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| 基金项目： | Project Supported by Natural Science Foundation of CQ CSTC(2005BA6021) |
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| 摘 要： | Based on a lot of measurement and analysis,this paper find that the unbalanced nature of 35 kV grids due to unsymmetrical capacitance values gives difficulty in neutral point operation in mountainous area.Improving compensation of Petersen coil can rectify imbalance of voltage but bring up new problem that Petersen coil can not extinguish grounding arc effectively in fault.To put down contradiction mentioned above,this paper proposes a combination operation for neutral point of 35 kV grids as neutral point insulated in routine operation and grounding through Petersen coil in fault,then EMTP simulation is carried out.Simulation indicates that new neutral operation method can improve lightning withstand level and decrease trip-out rate of grids.
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| 关 键 词： | mountainous area 35kV grids unsymmetrical capacitance values neutral point operation method |
Combination Operation for Neutral Point of 35 kV Power Grids in Mountainous Area |
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| YUAN Tao,SIMA Wen-xia,RAN Rui.Combination Operation for Neutral Point of 35 kV Power Grids in Mountainous Area[J].High Voltage Engineering,2008,34(12):2626-2630. |
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| Authors: | YUAN Tao SIMA Wen-xia RAN Rui |
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| Affiliation: | 1,ZHU Wei2(1.State Key Laboratory of Power Transmission Equipment & System Security and New Technology,Chongqing University,Chongqing 400044,China;2.Linan Electric Power Bureau,Linan 311307,China) |
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| Abstract: | Based on a lot of measurement and analysis, this paper find that the unbalanced nature of 35 kV grids due to unsymmetrical capacitance values gives difficulty in neutral point operation in mountainous area. Improving compensation of Petersen coil can rectify imbalance of voltage but bring up new problem that Petersen coil can not extinguish grounding arc effectively in fault. To put down contradiction mentioned above, this paper proposes a combination operation for neutral point of 35 kV grids as neutral point insulated in routine operation and grounding through Petersen coil in fault, then EMTP simulation is carried out. Simulation indicates that new neutral operation method can improve lightning withstand level and decrease trip-out rate of grids. |
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| Keywords: | mountainous area 35kV grids unsymmetrical capacitance values neutral point operation method |
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