Investigation of the Voltage Distortion Effect by External Consumers on the Power Consumption Mode of a Controlled Three-phase Rectifier

Abstract

The electrical energy consumers, as a rule, are responsible for the violation of its quality. Part of this violation depends on the characteristics of the source and the power supply network. In rare cases, violations of the quality of electrical energy depend on generating installations. The paper analyzes the equivalent circuits of power lines. For a CL that provides power to a three-phase rectifier, the change in active resistance in the presence of current higher harmonics is taken into account. A model has been developed for the network-CL-transformer-rectifier-load structure. A subsystem has been synthesized that implements a change in the line active resistance in the presence of current harmonics. A number of experiments were implemented during which the difference in power losses from higher harmonics was investigated. It has been established that in the voltage harmonics presence caused by third-party consumers, the level of power losses in the line from higher harmonics decreases.