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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

Inactive Publication Date: 2017-01-04
CHINA ELECTRIC POWER RES INST +1
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Problems solved by technology

In view of the limitations of objective factors such as the current existing test equipment and site, the fittings of electric equipment cannot be assembled to the test conditions at the same height as the actual line during the corona test, and can only rely on the existing conditions of the test site for simulated operation , the test results are corrected according to the fixed suspension height parameters specified in the standard

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

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Embodiment Construction

[0041] Exemplary embodiments of the present invention will now be described with reference to the drawings; however, the present invention may be embodied in many different forms and are not limited to the embodiments described herein, which are provided for the purpose of exhaustively and completely disclosing the present invention. invention and fully convey the scope of the invention to those skilled in the art. The terms used in the exemplary embodiments shown in the drawings do not limit the present invention. In the figures, the same units / elements are given the same reference numerals.

[0042] Unless otherwise specified, the terms (including scientific and technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it can be understood that terms defined by commonly used dictionaries should be understood to have consistent meanings in the context of their related fields, and should not be understood as idealized or over...

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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.

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...

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Application Information

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IPC IPC(8): G01R31/12
CPCG01R31/12
Inventor 全姗姗曹晶谷莉莉邓杰杰周志伟梁进祥江玲代静汪英英
Owner CHINA ELECTRIC POWER RES INST
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