| 35kV中性点经消弧线圈接地系统几种铁磁谐振消谐措施有效性分析 |
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| 引用本文： | 王鹏,郭洁,齐兴顺,杨积成,张鹏娇.35kV中性点经消弧线圈接地系统几种铁磁谐振消谐措施有效性分析[J].电瓷避雷器,2010(6). |
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| 作者姓名： | 王鹏 郭洁 齐兴顺 杨积成 张鹏娇 |
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| 作者单位： | 西安交通大学电气学院,西安,710049;庆阳供电公司,甘肃,庆阳,745000;西北电力设计院,西安,710075 |
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| 摘 要： | 由于电磁式电压互感器(PT)饱和引起的铁磁谐振严重影响整个系统的安全运行。以某35 kV中性点经消弧线圈接地系统为例建立仿真模型,对PT高压侧中性点经PT接地(4PT)、非线性电阻消谐器接地,PT开口三角绕组接入阻尼电阻,系统母线加装星形避雷器四种目前常用消谐措施进行了仿真计算和分析比较,计算结果表明:对于中性点经消弧线圈接地系统中常见的由于单相接地故障消失引发的分频铁磁谐振,4PT法和PT高压侧中性点经非线性电阻消谐器接地抑制谐振效果不明显,由于系统发生谐振时避雷器没有动作,母线加装星形避雷器对谐振的影响很小,而PT开口三角接入阻尼电阻对谐振具有较好的抑制作用,并且电阻越小抑制效果越明显,但是小电阻的热容量太大,容易引起电阻烧坏,且电阻热容量越大成本越高,应尽量使阻尼电阻短时间接入。
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| 关 键 词： | 铁磁谐振 电磁式电压互感器(PT) ATP-EMTP 消谐措施 |
The Effectiveness Analysis of Ferroresonance Suppression Measures for 35kV Neutral Point Through Arc Suppression Coil Grounded System |
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| WANG Peng,GUO Jie,QI Xing-shun,YANG Ji-cheng,ZHANG Peng-jiao.The Effectiveness Analysis of Ferroresonance Suppression Measures for 35kV Neutral Point Through Arc Suppression Coil Grounded System[J].Insulators and Surge Arresters,2010(6). |
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| Authors: | WANG Peng GUO Jie QI Xing-shun YANG Ji-cheng ZHANG Peng-jiao |
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| Affiliation: | WANG Peng1,GUO Jie1,QI Xing-shun2,YANG Ji-cheng2,ZHANG Peng-jiao3(1.Electrical Engineering College Xi'an Jiao Tong University,Xi'an 710049,China,2.Qingyang Electrical Power,Qingyang,745000,3.Northwest Electric Power Design Institute,Xi'an 710075,China) |
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| Abstract: | Ferroresonance due to the saturation of PT has a serious impact on the safety operation of the whole system.A 35 kV neutral point through arc suppression coil grounded system models is established as a example,simulating the four common suppression measures,including: connecting single phase PT to the neutral point of PT high voltage side(4PT),connecting nonlinear resistance to the neutral point of PT high voltage side,connecting damp resistance to the broken delta winding of PT,connecting four star type MO... |
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| Keywords: | ferroresonance inductive voltage transformers(PT) ATP-EMTP suppression measures |
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