铁氧体磁环抑制252 kV GIS中VFTO的试验研究
发布时间：2018-08-05 16:28
【摘要】：气体绝缘开关设备(GIS)内隔离开关操作过程中产生的特快速暂态过电压(VFTO)威胁GIS和电力系统的安全运行,需要采取有效措施进行抑制。为验证铁氧体磁环对于实际GIS内VFTO的抑制效果,利用真型252 kV GIS试验平台,在电源电压分别为50 kV、100 kV以及140 kV时进行了无磁环、20 cm铁氧体磁环串、40 cm铁氧体磁环串的系列对比试验。对试验结果的统计和分析表明,铁氧体磁环对VFTO中的不同频率成分均具有抑制作用,对于VFTO波形的主要参数包括过冲系数、最大峰值电压、最大峰值陡度、第一峰值电压、第一峰值陡度都有显著的抑制效果。在试验条件下,击穿电压的大小对于抑制效果没有显著的影响。试验结果证实了在实际GIS设备中安装铁氧体磁环抑制VFTO的幅值和陡度的可行性。
[Abstract]:The very fast transient overvoltage (VFTO) produced during the operation of the isolating switch in the gas insulated switchgear (GIS) threatens the safe operation of GIS and power system, so it is necessary to take effective measures to restrain it. In order to verify the effect of ferrite magnetic ring on the suppression of VFTO in actual GIS, the true 252kV GIS test platform was used. When the supply voltage is 50 kV / 100 kV and 140 kV, respectively, a series of comparative tests are carried out on the 20 cm ferrite ring string and the 40 cm ferrite ring string without magnetic ring. Statistics and analysis of the test results show that ferrite magnetic rings can inhibit the different frequency components in VFTO. The main parameters of VFTO waveform include overshoot coefficient, maximum peak voltage, maximum peak gradient, first peak voltage, The first peak steepness has significant inhibitory effect. Under the experimental conditions, the breakdown voltage has no significant effect on the inhibition effect. The experimental results confirm the feasibility of installing ferrite rings to suppress the amplitude and steepness of VFTO in actual GIS equipment.
【作者单位】： 清华大学电机工程与应用电子技术系电力系统及发电设备控制和仿真国家重点实验室;国家电网公司;华北电力大学新能源电力系统国家重点实验室高电压与电磁兼容北京市重点实验室;
【基金】：国家自然科学基金(51277106) 国家重点基础研究发展计划(973计划)(2011CB209405)~~
【分类号】：TM277;TM595
，
本文编号：2166343
[Abstract]:The very fast transient overvoltage (VFTO) produced during the operation of the isolating switch in the gas insulated switchgear (GIS) threatens the safe operation of GIS and power system, so it is necessary to take effective measures to restrain it. In order to verify the effect of ferrite magnetic ring on the suppression of VFTO in actual GIS, the true 252kV GIS test platform was used. When the supply voltage is 50 kV / 100 kV and 140 kV, respectively, a series of comparative tests are carried out on the 20 cm ferrite ring string and the 40 cm ferrite ring string without magnetic ring. Statistics and analysis of the test results show that ferrite magnetic rings can inhibit the different frequency components in VFTO. The main parameters of VFTO waveform include overshoot coefficient, maximum peak voltage, maximum peak gradient, first peak voltage, The first peak steepness has significant inhibitory effect. Under the experimental conditions, the breakdown voltage has no significant effect on the inhibition effect. The experimental results confirm the feasibility of installing ferrite rings to suppress the amplitude and steepness of VFTO in actual GIS equipment.
【作者单位】： 清华大学电机工程与应用电子技术系电力系统及发电设备控制和仿真国家重点实验室;国家电网公司;华北电力大学新能源电力系统国家重点实验室高电压与电磁兼容北京市重点实验室;
【基金】：国家自然科学基金(51277106) 国家重点基础研究发展计划(973计划)(2011CB209405)~~
【分类号】：TM277;TM595
，
本文编号：2166343
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