Environmental protection effect assessment method of perfluoroisobutyronitrile mixed gas

A technology of perfluoroisobutyronitrile and mixed gas, which is applied in the direction of material breakdown voltage, etc., can solve the problems that the environmental protection effect of perfluoroisobutyronitrile mixed gas cannot be evaluated, achieve environmental protection effects, meet the requirements of environmental protection alternatives, and be easy to operate Effect

Pending Publication Date: 2019-08-06
CHINA ELECTRIC POWER RES INST +3
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Problems solved by technology

[0003] In view of this, the present invention proposes a detection method of the global warming coefficient of a perfluoroisobutyronitrile mixed gas, aiming to solve the problem that the environmental protection effect of the existing perfluoroisobutyronitrile mixed gas cannot be evaluated

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  • Environmental protection effect assessment method of perfluoroisobutyronitrile mixed gas
  • Environmental protection effect assessment method of perfluoroisobutyronitrile mixed gas
  • Environmental protection effect assessment method of perfluoroisobutyronitrile mixed gas

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Embodiment Construction

[0030] 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.

[0031] see figure 1 , which is a schematic flow chart of the method for evaluating the environmental protection effect of perfluoroisobutyronitrile mixed gas...

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Abstract

The invention provides an environmental protection effect assessment method of a perfluoroisobutyronitrile mixed gas. The assessment method comprises the following steps of configuring standard mixedgases with different volume mixing ratios; carrying out a power frequency discharge test on the various standard mixed gases in sequence, recording a standard discharge voltage, and establishing a standard curve between the standard volume mixing ratio and the corresponding standard discharge voltage and a fitting equation; obtaining an actual discharge voltage of a mixed gas to be tested, and determining a volume mixing ratio in the mixed gas to be tested according to the actual discharge voltage of the mixed gas to be tested; and determining a global warming coefficient of the mixed gas to be tested and evaluating an environmental protection effect of the mixed gas to be tested. Through comparing the global warming coefficient of the perfluoroisobutyronitrile mixed gas to be tested witha preset threshold, the environmental protection effect of the gas to be tested is evaluated to ensure that the configured perfluoroisobutyronitrile mixed gas has a lower GWP characteristic so as to satisfy a current environmental protection replacement requirement to insulation and arc extinguishing media.

Description

technical field [0001] The invention relates to the technical field of product detection and analysis, in particular to a method for evaluating the environmental protection effect of perfluoroisobutyronitrile mixed gas. Background technique [0002] Sulfur hexafluoride (SF 6 ) gas is widely used in high-voltage equipment as a good insulating and arc-extinguishing medium. However, the Global Warming Potential (GWP) of sulfur hexafluoride is 23,900 times that of CO2. Therefore, the power industry urgently needs to adopt six Alternatives to sulfur fluoride. Perfluoroisobutyronitrile (C 4 f 7 N) and CO 2 The mixed insulating gas formed, as a new type of sulfur hexafluoride replacement gas for electrical equipment, has been used in electrical equipment such as 145kV gas-insulated switchgear (GIS) and 420kV gas-insulated transmission line (GIL). The GWP of perfluoroisobutyronitrile is only SF 6 10%, the liquefaction temperature is -4.7°C, with CO 2 , N 2 Mixed with equal b...

Claims

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Application Information

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IPC IPC(8): G01N27/92
CPCG01N27/92
Inventor 颜湘莲郑宇高克利徐晓东王浩李志兵何洁刘北阳丁德
Owner CHINA ELECTRIC POWER RES INST
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