| 引用本文: | 郑君亮,江修波,蔡金锭.变压器油纸绝缘等效电路参数辨识及绝缘状态对参数的影响分析[J].电力自动化设备,2015,35(8): |
| ZHENG Junliang,JIANG Xiubo,CAI Jinding.Parameter identification for equivalent circuit of transformer oil-paper insulation and effect of insulation condition on parameters[J].Electric Power Automation Equipment,2015,35(8): |
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| 摘要: |
| 通过回复电压特征量的测量值，利用果蝇算法求解出变压器油纸绝缘等效电路参数。将所求参数代入仿真模型得到回复电压极化谱，其与测量值拟合很好，验证了所求参数的正确性。根据电压等级、容量的大小，将7台变压器分成3组，计算出各变压器的油纸绝缘等效电路参数，并分析了绝缘状态对等效电路参数的影响。分析结果表明，绝缘状态较好的变压器的绝缘电阻、极化电阻和最大时间常数，要大于绝缘状态较差的变压器的绝缘电阻、极化电阻和最大时间常数。 |
| 关键词: 变压器 变压器绝缘 油纸绝缘 模型 回复电压 果蝇算法 参数辨识 绝缘 |
| DOI： |
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| 基金项目:国家自然科学基金资助项目（61174117） |
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| Parameter identification for equivalent circuit of transformer oil-paper insulation and effect of insulation condition on parameters |
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ZHENG Junliang, JIANG Xiubo, CAI Jinding
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College of Electrical Engineering and Automation，Fuzhou University，Fuzhou 350108，China
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| Abstract: |
| Based on the eigenvalue measurements of return voltage，the fruit flying algorithm is adopted to calculate the equivalent circuit parameters of transformer oil-paper insulation，which are then applied in the simulation model to obtain the polarization spectrum of return voltage. It fits the measurements very well，verifying the correctness of calculated parameters. Seven transformers are divided into three groups according to their voltage level and capacity，their equivalent circuit parameters of oil-paper insulation are calculated and the effect of insulation condition on the parameters is analyzed. The analytical results show that，the transformer with better insulation has bigger insulation resistance，polarization resistance and maximum time constant. |
| Key words: electric transformers electric transformer insulation oil-paper insulation models return voltage fruit fly algorithm parameter identification insulation |
