In order to solve the problem of reactor combination scheme in long cable withstand voltage test

a parameter optimization method of long cable withstand voltage test equipment is proposed.Improve the series resonance parallel compensation connection mode

consider the equipment constraints

establish the objective function with the minimum number of reactor combinations

and get the quality factor interval under the equipment constraints.Then select the combination mode with the minimum number of reactors as the optimal test connection scheme

and get the corresponding resonance frequency

reactor current

current at transformer high voltage side

transformer output voltage and other optimal parameters.Taking two 220 kV cables of different lengths as an example

the optimal reactor combination scheme is obtained through optimization method

which not only improves the efficiency of scheme selection

but also realizes the best test effect with both test cost and quality factor

and provides a new method of equipment parameter optimization for long cable withstand voltage test.