电容式电压互感器谐波测量特性研究 |
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引用本文: | 王昕,沈鑫,曹敏,魏龄,赵旭,蒋婷婷,翟少磊. 电容式电压互感器谐波测量特性研究[J]. 电测与仪表, 2016, 0(Z1): 1-9. DOI: 10.3969/j.issn.1001-1390.2016.z1.001 |
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作者姓名: | 王昕 沈鑫 曹敏 魏龄 赵旭 蒋婷婷 翟少磊 |
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作者单位: | 1. 云南电网有限责任公司电力科学研究院,昆明650217; 中国南方电网电能计量重点实验室,昆明650217;2. 云南电网有限责任公司电力科学研究院,昆明650217; 昆明理工大学,昆明650500 |
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基金项目: | 国家高技术研究发展计划(863计划)(2011AA05A120);云南省教育厅重大研究项目(2015Z014) |
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摘 要: | 针对电容式电压互感器(Capacitor Voltage Transformers,CVT)的频率特性影响导致传统的高压谐波测量方法结果不准确的问题,对CVT的谐波特性进行了分析,提出了采用电容电流法对CVT的谐波进行检测,通过与传统谐波测试方法的结果以及电网实际谐波的对比,验证了电容电流法的正确性和准确性,并在电网中对电压谐波进行测试比对和验证,实验结果表明,文中电容电流法进行谐波测试准确度高,满足测试的标准要求,可解决目前CVT不能用于谐波测量的问题。
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关 键 词: | 电容式电压互感器 谐波测量 传输特性 电容电流法 |
Research on capacitive voltage transformer harmonic measurement features |
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Abstract: | According to the issue of transmission characteristics of capacitor voltage transformer(CVT), which leading to inaccuracy of the power grid voltage harmonics values, a new kind of measurement system and test method was pro-posed, that based on testing the Capacitive current of CVT. Comparison with the results of traditional test method har-monic and actual power grid harmonic, it verified the validity of the method of capacitive current and accuracy, and test the voltage harmonic in the actual power grid, the results show that this test system can completely satisfy the require-ments of test for voltage harmonic. |
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Keywords: | CVT harmonic measurement transmission characteristics capacitive current method |
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