Live-line test method and system for compatibility of gas-solid materials in ring main unit

A test method and technology of ring main unit, applied in the field of power system testing, can solve the problems of incomplete compatibility of materials, corrosion of equipment materials, etc., and achieve the effect of gas-solid compatibility, safety and reliability

Pending Publication Date: 2021-12-03
CHINA ELECTRIC POWER RES INST
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  • Claims
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Problems solved by technology

[0004] In view of this, the present invention proposes a charging test method and system for the compatibility of gas-solid materials in the ring network cabinet, aiming to

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  • Live-line test method and system for compatibility of gas-solid materials in ring main unit
  • Live-line test method and system for compatibility of gas-solid materials in ring main unit
  • Live-line test method and system for compatibility of gas-solid materials in ring main unit

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Embodiment Construction

[0021] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0022] Method example:

[0023] see figure 1 , which is a flow chart of the charging test method for the compatibility of gas-solid materials in the ring ne...

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Abstract

The invention provides a live-line test method and system for compatibility of gas-solid materials in a ring main unit. The method comprises the following steps of acquiring a pre-test mixing ratio of C4F7N/CO2 mixed gas; performing a cold and hot cycle test on the environment-friendly gas ring main unit; detecting whether the power frequency withstand voltage value or the lightning impulse withstand voltage value of the environment-friendly gas ring main unit meets the standard requirement or not; determining the reduction ratio of the mixing ratio of C4F7N in the C4F7N/CO2 mixed gas; and when the power frequency withstand voltage value or the lightning impulse withstand voltage value of the environment-friendly gas ring main unit does not meet the standard requirement, or the reduction ratio of the mixing ratio of C4F7N in the C4F7N/CO2 mixed gas is greater than a preset reduction ratio, judging that the gas-solid material compatibility in the environment-friendly gas ring main unit does not meet the field operation requirement. According to the invention, the on-site operation condition is simulated, the gas-solid material compatibility in the environment-friendly gas ring main unit is examined, the product design is optimized to meet the operation requirement, and the compatibility rule of C4F7N/CO2 gas adopted by the gas ring main unit in the actual operation and the solid material can be obtained.

Description

technical field [0001] The invention relates to the technical field of power system detection, in particular to a live test method and system for the compatibility of gas-solid materials in a ring network cabinet. Background technique [0002] Sulfur hexafluoride (SF 6 ) gas is widely used in electrical equipment as an excellent insulation and arc extinguishing medium, but SF 6 The greenhouse effect of CO is 2 23,500 times that of carbon dioxide, and its lifespan in the atmosphere is as high as 3,200 years, which has a great impact on the environment. Studies at home and abroad have shown that perfluoroisobutyronitrile (C 4 f 7 N) and CO 2 The mixed gas formed has high insulation strength and low greenhouse effect, and is considered to be a potential SF 6 Environmentally friendly alternative gas. Currently, C 4 f 7 N and C 4 f 7 N / CO 2 Great progress has been made in key technologies such as insulation properties, and it has been applied in gas-insulated transmis...

Claims

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Application Information

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IPC IPC(8): G01N27/92
CPCG01N27/92
Inventor 颜湘莲高克利黄印李志兵王雯何洁
Owner CHINA ELECTRIC POWER RES INST
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