Series resonance test calculation auxiliary method

Abstract

The invention discloses a series resonance test calculation auxiliary method. The method comprises the following steps: carrying out a series resonance test and collecting corresponding data; presetting calculation data; the number of reactors needing to be prepared and the models of a frequency conversion source and a voltage divider are determined through calculation according to the test withstand voltage value, the test power and the needed reactance of the test cable. According to the technical scheme, the Excel with great advantages in circulation, safety and use cost is selected as an auxiliary tool platform, the cable voltage is adopted as the column number, the cable cross section area is adopted as the row number for indexing, INDEX and MATCH functions are used in a composite mode, the cable unit length capacitance is obtained on the basis of the cable model capacitance value data table, and the cable model capacitance value data table is calculated. And result calculation is carried out in combination with conversion of input and output data, and a test cable model and voltage class logic judgment link is added for data display, so that the data strictly follows field use specifications, and the authenticity and accuracy of a series resonance test are ensured.

Description

technical field [0001] The invention relates to the technical field of series resonance test, in particular to a calculation assistance method for series resonance test. Background technique [0002] Due to its high reliability, power cables are widely used in power grids. New cable laying, lap joint engineering and its test work have also become one of the basic safety production tasks for substation inspection. The series resonance withstand voltage test of the newly laid cables can effectively detect the insulation capacity of the cables and find their defects. In the process of carrying out the series resonance withstand voltage test, the choice of test equipment and test plan before the test will greatly affect whether the series resonance withstand voltage test can be successfully implemented. [0003] For the series resonance test, the selection of the test equipment model, the number of reactors and the connection method are one of the main tasks in the test prepara...

AI Technical Summary

Problems solved by technology

[0005] The present invention mainly solves the technical problem that the calculation efficiency of the original technical solution is low and it is difficult to ensure the correctness of the results of the series resonance test, and provides an auxiliary method for the calculation of the series resonance test. As an auxiliary tool platform, Excel uses the cable voltage as the column number and the cable cross-sectional area as the row number for indexing. It is used in combination with the INDEX and MATCH functions. The capacitance per unit length of the cable is obtained on the basis of the cable model capacitance value data table, combined with the input The conversion of the output data is used to calculate the results, and the logical judgment link of the voltage level of the test cable model is added to the data display, so that the data strictly follows the field use specifications and ensures the authenticity and accuracy of the series resonance test

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