Height correction coefficient determining method for AC line hardware fitting discharge inception voltage simulation test

A technology of correction factor and corona inception voltage, applied in the field of electric power, can solve the problem of inability to assemble into test conditions, and achieve the effect of reducing the difficulty of layout and workload, reducing safety risks, and improving efficiency
CN106291284AInactive Publication Date: 2017-01-04CHINA ELECTRIC POWER RES INST +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHINA ELECTRIC POWER RES INST
Publication Date
2017-01-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for determining a height correction coefficient of a hardware fitting discharge inception voltage simulation test in an AC line. The method comprises the following steps: respectively carrying out corona tests on different power hardware fittings so as to obtain corona initial voltages of the different power hardware fittings under different ground heights; according to the corona initial voltages of the different power hardware fittings, respectively determining corona initial voltage feature curves of the different power hardware fittings; respectively calculating correction values of the corona initial voltages of the different power hardware fittings under the different ground heights; respectively performing data regression analysis on the correction values of the different power hardware fittings, and respectively obtaining a height correction function, and an initial coefficient ai and an initial exponent coefficient bi which are corresponding to the different power hardware fittings; and respectively taking arithmetic averages of the initial coefficient ai and the initial exponent coefficient bi corresponding to the different power hardware fittings to obtain a coefficient a and an exponent coefficient b, and according to the height correction function, determining the height correction coefficient of power hardware fitting discharge inception voltages.
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Description

technical field

[0001] The invention relates to the field of electric power, and more specifically, to a method for determining a height correction coefficient for a simulation test of corona inception voltage of an AC line fitting. Background technique

[0002] In high-voltage transmission lines, corona discharge will occur in conductors and power fittings. Corona directly radiates in the form of electromagnetic waves, causing interference to the surrounding environment, mainly consuming electric energy, generating audible noise and radio interference, and reducing safety and reliability. The electromagnetic environment problems caused by power fittings in the operation of the power grid have attracted more and more attention. It is necessary to carry out corona tests on the fittings to check whether they meet the requirements of power grid operation.

[0003] In the corona test of electric power fittings, the assembly and arrangement of the test products should be carried...

Claims

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