| 引用本文: | 叶建新,黄健豪,张禄亮,曾 江.东莞配电网谐波对配电变压器危害分析[J].电力自动化设备,2011,31(7): |
| YE Jianxin,HUANG Jianhao,ZHANG Luliang,ZENG Jiang.Analysis of harmonic harm to distribution transformers[J].Electric Power Automation Equipment,2011,31(7): |
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| 摘要: |
| 为了掌握电网运行的谐波状况及其危害，采用便携式电能质量分析仪FLUKE435对配电网变压器运行状况进行谐波普查，得到了大量典型负荷的实测数据。根据相关文献和标准中，对谐波造成配电变压器损耗增加（最高增加0.06 % 的损耗）、利用率下降（降容15 %）、寿命减少（可减少寿命一半）和维修费用增加（最高增加一倍的费用）等问题进行了定量的分析计算，并统一折算为电耗，计算结果表明谐波给供电部门造成了巨大损失，年增加电耗数千万度，相关企业及部门应给予高度重视。 |
| 关键词: 谐波分析 配电 变压器 损耗 降容运行 寿命缩短 |
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| 基金项目:国家自然科学基金资助项目（50707010）；东莞供电局科技项目（DK0010DG0004） |
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| Analysis of harmonic harm to distribution transformers |
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YE Jianxin1, HUANG Jianhao1, ZHANG Luliang2, ZENG Jiang2
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1.Dongguan Power Supply Bureau of Guangdong Grid，Dongguan 523000，China;2.College of Electric Power，South China of Technology，Guangzhou 510640，China
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| Abstract: |
| Portable power quality analyzer FLUKE435 is used to carry out the harmonics survey for the transformers of distribution network and mass measured data of typical loads are obtained. Quantitative calculation of harmonic harm to distribution transformer is carried out for additional loss（up to 0.06 %），capacity loss（15 %），life shortening（up to 50 %） and maintenance cost increase（up to 100 %），which are shown as power consumption. |
| Key words: harmonic analysis electric power distribution electric transformers loss derating operation life shortening |
