Abstract:

At present, high voltage （HV） reactors are mainly used to restrain the power frequency overvoltage and secondary arc current, not for the voltage control purpose. With the spreading and changing of power grid, part of HV reactors cannot be put into operation. In order to improve the use efficiency of assets, an optimization configuration method of HV reactor was proposed. Firstly, this method comprehensively considered the capacitance effect and power loss of transmission lines, as well as the existing inductive reactive power compensation degree of the two end stations of the lines； and set of alternative configuration schemes were designed for HV reactors. Then, a comprehensive evaluation system of reactive voltage was established for the configuration schemes of HV reactors with considering the maximum voltage fluctuation and deviation, average power loss, and switching action quantity of inactive power adjusting devices as evaluation indexes. A weighted method based on the variance of fuzzy memberships was introduced for a more scientific and objective optimal scheme decision strategy. Finally, combined with the configuration problem of HV reactors in Shaanxi power grid, the proposed method was proved to be effective and feasible.

Key words: high voltage reactor, reactive voltage, comprehensive evaluation system, voltage fluctuation and deviation, fuzzy membership variance, weighting decision strategy