The power transformer includes pre-test, on-linesupervision, family quality bug, and equipment self-quality event, etc.
电力变压器状态信息构成应包括：预试、在线监测、家族质量缺陷和设备自身质量事件等等。
2
Therefore, it has a great significance in On-linesupervision of welding process and welding quality to measure these dynamic welding parameters rapidly and accurately.
因此，快速、准确地同步测试这些动态焊接参数，对在线监控焊接过程及焊接质量有重要意义。
3
Harmonic wave analysis method is the insulator medium consume factor on line method and discussed hte effect on the main factor of the medium consume on linesupervision precision.