会议论文

英文

Lecture Notes in Electrical Engineering

1876-1100

2022

889 LNEE

280-289

16th Annual Conference of China Electrotechnical Society, CES 2021

24 September 2021 through 26 September 2021

Springer Science and Business Media Deutschland GmbH

9789811915277

10.1007/978-981-19-1528-4_28

Acknowledgment. Supported by 1 Research on On-line Insulation Monitoring Technology of Electric Heater in Nuclear Reactor Regulator, Key Project of Education Department of Hunan Province (180SJZ005), hengyang, 421000, china. Supported by 1 Research on On-line Insulation Monitoring Technology of Electric Heater in Nuclear Reactor Regulator, Key Project of Education Department of Hunan Province (180SJZ005), hengyang, 421000, china. 2 the Project ?Research on Environmental Qualification Technology of Electrical Instrument Equipment? of China Nuclear Power Research and Design Institute, ChengDu City, 610041, China.

本校为第一机构

The problem of high-precision insulation detection in the neutral point ungrounded system has not been well solved, especially in the case of non-faulty branch insulation resistance is not infinite, the traditional insulation testing device with the total insulation resistance to replacing the fault branch insulation resistance method error is very large. To solve this problem, this paper designs an injection source circuit that can be switched between the neutral point of the transformer and the output line of a phase. The actual total insulat...