GIL (gas insulated metal enclosed transmission line) epoxy resin surface charge measuring device and method

A technology of epoxy resin and surface charge, applied in the direction of measuring devices, measuring electrical variables, instruments, etc., can solve the problems of complex research on working status and aging degree
CN106771685AInactive Publication Date: 2017-05-31TIANJIN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
TIANJIN UNIV
Publication Date
2017-05-31
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a GIL (gas insulated metal enclosed transmission line) epoxy resin surface charge measuring device and method. The device comprises a high-voltage charging device and a potential measurement device; different types of voltage actions are exerted on the GIL epoxy resin surface to be measured; a voltage boosting process is corona discharge; the charge trapping and trapping-out states are calculated; the specimen surface potential dissipation curves, different position potential distribution curves and the specimen trap energy level density distribution curves after the action by different types of corona are drawn; a GIL epoxy resin surface charge measuring result is obtained; the charge transportation characteristics are analyzed; the aging state and the service life of epoxy resin are accurately judged. By using a surface potential measuring technology and the existing instruments, the epoxy resin specimen surface charges under the actions of different voltage types are measured; the measuring data is subjected to mathematical processing; the transportation characteristics of the charges inside the epoxy resin are found out; the important theoretical basis is provided for solving the epoxy insulator surface flashover problem and the aging state evaluation problem; typical engineering practical guiding significance is realized.
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Description

technical field

[0001] The invention relates to the technical field of charge measurement on the surface of a GIL epoxy resin insulating part, in particular to a method for measuring the surface charge of a GIL epoxy resin based on the combined action of DC pulses. Background technique

[0002] In recent years, with the development of high-voltage direct current transmission technology, more and more countries have begun to pay attention to and study its advantages in the field of power transmission, and have established high-voltage direct current transmission systems. As a new type of power transmission, gas-insulated metal-enclosed transmission line (GIL) can be applied to large-capacity, long-distance HVDC transmission systems due to its advantages of large transmission capacity, low loss, and high reliability. Epoxy resin is cheap to manufacture, has excellent mechanical and electrical properties, and is used to manufacture the main insulating parts of GIL, including po...

Claims

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