• CSCD核心库收录期刊
  • 中文核心期刊
  • 中国科技核心期刊

电力建设 ›› 2015, Vol. 36 ›› Issue (8): 102-107.doi: 10.3969/j.issn.1000-7229.2015.08.017

• 输配电技术 • 上一篇    下一篇

10  kV系统冲击与工频续流联合试验回路设计

陈斯翔1,苏杏志1,孔华东1,孙广慧1,刘益军1,齐小军2   

  1. 1. 广东电网有限责任公司佛山供电局,广东省佛山市528000;2. 武汉水院电气有限责任公司,武汉市 430073
  • 出版日期:2015-08-01
  • 作者简介:陈斯翔 (1985),男,硕士,工程师,主要从事电气设备绝缘配合及避雷器技术方面的研究工作; 苏杏志(1965),男,高级工程师,从事高电压技术及输电技术方面的工作; 孔华东(1975),男,硕士,高级工程师,从事电力系统过电压保护方面的工作; 孙广慧(1980),男,高级工程师,从事配电工程及运行管理方面的工作; 刘益军(1982),男,高级工程师,从事电气设备检测方面的工作; 齐小军(1976),男,工程师,从事电力系统过电压保护方面的研究工作。
  • 基金资助:

    南方电网公司科技项目(K-GD2013-0268)。

10  kV Combined Test Circuit Design with Impulse and Power Frequency Continuous Current

CHEN Sixiang1, SU Xingzhi1, KONG Huadong1,SUN Guanghui1, LIU Yijun1, QI Xiaojun2   

  1. 1. Foshan Power Supply Bureau of Guangdong Power Grid Co., Ltd., Foshan 528000, Guangdong Province, China; 2. Wuhan Shuiyuan Electrical Co., Ltd., Wuhan 430073,  China
  • Online:2015-08-01
  • Supported by:

    Project Supported by China Southern Power Grid Co.,Ltd (K-GD2013-0268).

摘要:

为检验10  kV带间隙防雷装置在冲击闪络后熄灭工频续流电弧的能力,设计了一种冲击试验与工频续流试验相结合的试验回路。为了产生较高电压下的高幅值工频续流,采用LC串并联谐振回路产生工频续流,对该回路中各元件的参数进行计算并给出合理数值,最后利用同步控制回路提取冲击信号来导通工频续流回路,实现冲击试验与工频续流试验的同步。计算结果表明,该联合试验回路能在产生1.2/50 μs冲击波的同时产生频率为50 Hz的正弦电流波且电流的振荡能够持续至少100 ms,满足带间隙防雷装置在冲击闪络后,检验工频续流下熄灭电弧能力的要求。

关键词: 带间隙防雷装置, LC串并联谐振, 工频续流, 联合试验, 同步控制

Abstract:

To test the capability of 10 kV lightning protection device with series gaps to cut off the power frequency continuous current after the device breakdown by lightning, this paper designed a test loop in combination with impulse test and power frequency continuous current test. In order to generate power frequency continuous current with high amplitude under higher voltage, a LC series and parallel resonant circuit was used in which the parameters of each element were calculated and selected and their reasonable values were given. Finally, a synchronization control circuit was chosen to extract the impulse signal to conduct the power frequency continuous current circuit, which could realize the synchronization in impulse test and power frequency continuous current test. The calculation results show that the combined test circuit can generate 1.2/50 μs impulse waveform, and 50 Hz sinusoidal current wave with 100 ms oscillation, which can meet the requirement of testing the capability of lightning protection device with series gaps to cut off electric arc under power frequency continuous current after the device breakdown by lightning.

Key words: lightning protection device with series gaps, LC series and parallel resonant, power frequency continuous current, combined test, synchronization control

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