A multi-objective power quality comprehensive control and optimization device

Abstract

The invention provides a multi-target electric energy quality comprehensive control and optimization device which comprises a control part and a main circuit part, wherein the control part comprises a detection functional module, a multi-target electric energy quality control and optimization controller and a man-machine interface, the main circuit part comprises a passive LC main circuit and an active VSI main circuit, the detection functional module is used for detecting and analyzing electric energy quality indexes of a load, a power grid and the multi-target electric energy quality comprehensive control and optimization device, and the multi-target electric energy quality control and optimization controller controls the device to conduct evaluation and analysis on the priorities of electric energy quality control targets and an optimal control strategy at the current moment within the range of security capacity in a unified and coordinated mode and sends out a control command to control the main circuits to conduct electric energy quality control and optimization in a unified and coordinated mode. The device is high in capacity and easy to expand, and capable of solving the electric energy quality problems such as voltage deviation, voltage fluctuation and flickering, three-phase imbalance, harmonic waves and low power factors to a certain extent.

Description

technical field [0001] The invention relates to the field of power quality, in particular to a multi-objective power quality comprehensive control and optimization device. Background technique [0002] The power quality of the power supply and distribution network is directly related to the stability of the power system, the safety of equipment and production, and the economy of power consumption. At present, on the one hand, with the rapid expansion of industrial production scale and the application of new power electronics technology, a large number of harmonic currents, impact reactive power, and negative sequence currents generated by nonlinear and asymmetric loads are injected into the power grid, which makes the current and voltage of the power grid distorted, A series of power quality problems such as voltage fluctuation flicker and three-phase unbalance are becoming more and more serious. On the other hand, voltage-sensitive users have higher and higher requirements ...

AI Technical Summary

Problems solved by technology

However, this method uses multiple types of power quality control devices at the same time, the structure is complex, and the functions of each device are single and controlled by their own independent control modules. There is no mutual coordination and unified control, and the comprehensive control effect is limited.

Images