Test system and method for dielectric strength of insulating oil under compound vfto

A test system and insulating oil technology, applied in the direction of testing dielectric strength, instruments, measuring devices, etc., can solve the problems of not considering the influence of VFTO on the insulating performance of insulating oil, and achieve the effect of improving the design of insulating structures

Active Publication Date: 2020-11-20
YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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Problems solved by technology

[0005] This application provides a test system and method for the insulation strength of insulating oil under the action of composite VFTO to solve the technical problem that the influence of VFTO on the insulation performance of insulating oil is not considered at present

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  • Test system and method for dielectric strength of insulating oil under compound vfto
  • Test system and method for dielectric strength of insulating oil under compound vfto
  • Test system and method for dielectric strength of insulating oil under compound vfto

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Embodiment Construction

[0041] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0042] see figure 1 , is a schematic structural diagram of a dielectric strength test system for insulating oil under the action of a composite VFTO provided in an embodiment of the present application.

[0043] Such as figure 1 As shown, the insulating oil dielectric strength test system under the action of composite VFTO provided by the e...

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Abstract

The invention discloses an insulating strength test system and method for insulating oil under composite VFTO action. The test system comprises a control device, a pulse generator and a test device, wherein the pulse generator comprises a first VFTO generation component, a second VFTO generation component, a steepening gap, a VFTO pulse transmission cable and a high-voltage T-shaped joint; the control device controls the first VFTO generation component and the second VFTO generation component to generate composite VFTO; the first VFTO generation component and the second VFTO generation component are connected with the test device through the steepening gap, the VFTO pulse transmission cable and the high-voltage T-shaped joint; and the test device is used for testing the insulating oil under the composite VFTO action. The test system disclosed by the invention simulates and completes the running condition of the insulating oil under the composite VFTO action, thereby achieving detectionof the insulating strength of the insulating oil under the composite VFTO action and compensating the influence of VFTO on the insulating property of the insulating oil.

Description

technical field [0001] The present application relates to the technical field of overvoltage insulation test, in particular to a system and method for testing the insulation strength of insulating oil under the action of composite VFTO. Background technique [0002] In the power system, insulating oil is widely used as an insulating medium in high-voltage electrical equipment due to its low viscosity and pour point, high dielectric strength and flash point, and good anti-emulsification performance. Large oil-immersed transformers, oil-filled cables, oil switches and oil-filled transformers, etc. [0003] At present, other conventional power equipment except transformers are integrated in GIS (Gas Insulated Switchgear, gas insulated combined electrical equipment). Recent studies have shown that the action of the isolation switch or circuit breaker inside the GIS will generate a fast transient overvoltage (Very Fast Transient Overvoltage, VFTO), the amplitude of VFTO is small...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/12
CPCG01R31/1281
Inventor 谭向宇周利军王科彭晶赵现平马仪周年荣张文斌黄星程志万马国明
Owner YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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