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See Chinese contents: GB/T 40427-2021 GB/T 40427-2021: Technical guidelines for power system voltage and reactive power
This document specifies the basic technical requirements for the voltage and reactive power of various voltage levels of the power system, the allowable voltage deviation, the reactive power balance and compensation, the selection of reactive power compensation equipment, the selection of transformer voltage regulating manner and voltage regulation range, and the reactive voltage control of the power system. This document is applicable to the voltage control and reactive power configuration of the power system of various voltage levels for power generation, transmission, distribution and utilization.
