| 交直流电压分量对变压器油中典型模型击穿特性影响 |
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| 引用本文： | 李博,程涣超,孙倩,李金忠,李光范,邓俊宇,樊炜,徐会雨. 交直流电压分量对变压器油中典型模型击穿特性影响[J]. 电工技术学报, 2011, 0(2): 34-38 |
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| 作者姓名： | 李博 程涣超 孙倩 李金忠 李光范 邓俊宇 樊炜 徐会雨 |
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| 作者单位： | 中国电力科学研究院;国家电网公司; |
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| 摘 要： | 在高压直流输电系统中,绝缘系统如换流变压器阀侧绝缘长期运行中不仅承受交流电压,还要受到直流电压的作用.由于在换流变压器试验过程中无法模拟交流和直流复合电压作用这一实际工况,交-直流合成电压对油纸绝缘特性影响缺乏深入研究.本文以典型针-板模型为例,同时施加不同交、直流分量,研究变压器油在针-板模型中的击穿特性.试验结果首...
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| 关 键 词： | 复合电场 绝缘特性 预加电压 换流变压器 高压直流 |
Influences of AC and DC Voltage Component on Typical Insulation Model Breakdown Characteristics in Transformer Oil |
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| Li Bo Cheng Huanchao Sun Qian Li Jinzhong Li Guangfan Deng Junyu Fan Wei Xu Huiyu. Influences of AC and DC Voltage Component on Typical Insulation Model Breakdown Characteristics in Transformer Oil[J]. Transactions of China Electrotechnical Society, 2011, 0(2): 34-38 |
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| Authors: | Li Bo Cheng Huanchao Sun Qian Li Jinzhong Li Guangfan Deng Junyu Fan Wei Xu Huiyu |
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| Affiliation: | Li Bo1 Cheng Huanchao1 Sun Qian1 Li Jinzhong1 Li Guangfan1 Deng Junyu1 Fan Wei2 Xu Huiyu1(1.China Electric Power Research Institute Beijing 100192 China 2.State Grid Corporation of China Beijing 100031 China) |
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| Abstract: | In the HVDC transmission system,the failure of converter transformer is the key problem for the electrical power system safety.Oil-paper insulation system in converter transformer bears AC and DC voltage in their lifetime.Since having no way to simulate its actual working condition,usually,AC and DC test voltage are separately imposed on the transformer during the factory test.Different influences of AC and DC voltage on the insulation characteristics are unknown.This paper designs a needle-plate model,and ... |
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| Keywords: | Composite field dielectric properties pre-stressed voltage converter transformer HVDC |
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