换流变压器直流出线装置的可靠性是换流变压器研制的关键问题之一,长期以来直流出线装置依靠进口,优化出合理的直流出线装置绝缘结构对进一步促进换流变压器设备制造全面国产化具有重要的意义。笔者总结了换流变压器的运行特点,研究了直流出线装置的绝缘结构,并进行了直流出线装置绝缘结构的电场计算。换流变压器的运行特点为短路阻抗大、直流偏磁影响、谐波影响严重,绝缘结构复杂,针对典型的直流出线装置绝缘结构,分别对直流出线装置长时AC外施试验、DC带局部放电测量的耐压试验、极性反转试验时的情况,按照各自模型进行电场分析计算 ...
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