GIL post insulator bursting fault simulation test platform and measurement method

Abstract

The invention discloses a GIL post insulator bursting fault simulation test platform and a measurement method. The platform is characterized in that a GIL test cavity is divided into a left cavity anda right cavity by a gas insulation spacer; the left cavity and the right cavity are respectively provided with a gas-pressure meter and a gas charging and discharging port; the left cavity is connected with a lead-out bushing through a flange; the right cavity is provided with an observation window for observing the bursting process of a GIL post insulator and a detection device for recording thebursting process of the GIL post insulator; and the detection device mainly comprises a temperature detection device, an ultrasonic partial discharge detection device, an ultrahigh frequency partialdischarge detection device, and an SF6 gas decomposition product detection device. By adopting the GIL post insulator bursting fault simulation test platform, while the bursting process of the post insulator is observed, parameters such as the temperature, the partial discharge amount and the vibration of the post insulator are continuously measured at different moments, and a multivariate statistical analysis method is applied to establish an operation correlation matrix to analyze the autocorrelation of each characteristic parameter.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a GIL pillar insulator burst fault simulation test platform and measurement method. Background technique [0002] The gas-insulated metal-enclosed transmission line (GIL) is similar to the busbar structure in the gas-insulated metal-enclosed combined device (GIS), both of which are formed by the shell and the intermediate conductor. GIL has the characteristics of small power loss, large transmission capacity, high reliability, suitable for high drop occasions, low electromagnetic radiation, long service life, and suitable for harsh environments. Based on the above characteristics, GIL is widely used in underground power transmission, complex line crossing, long-distance shaft power transmission, substation reconstruction and expansion, etc. [0003] However, in the long-term operation of GIL, due to the potential difference between the shell and the center of the post in...

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Problems solved by technology

[0006] This application provides a GIL equipment post insulator burst failure simulation test platform to solve the problem that the existing test platform cannot quantitatively establish the correlation characteristics between the temperature, vibration and partial discharge of post insulators and the insulator burst. The method of artificially setting insulator defects to simulate real on-site working conditions is conducive to allowing test personnel to continuously monitor different moments before and after the insulator burst, apply multivariate statistical analysis methods, and establish a job correlation matrix for analyzing insulator temperature, vibration and partial discharge. Autocorrelation among equal characteristic parameters

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