Intelligent power grid voltage reactive power adjustment device

Abstract

The invention discloses an intelligent power grid voltage reactive power adjustment device, which belongs to the technical field of intelligent power grid reactive power adjustment. The intelligent power grid voltage reactive power adjustment device comprises a compensation device, a reactor, a thyristor, a fuse and a controller, wherein the cathode of the thyristor is grounded, and the anode is connected with the compensation device via the reactor; the compensation device is connected with the power grid via a circuit breaker and the fuse; the grid of the thyristor is connected with the controller; the controller comprises a current sampling module, a voltage sampling module and a microprocessor module; the compensation device comprises a chopper switch, a fly-wheel switch, a transformer, a plurality of groups of capacitors and an energy-saving device; the chopper switch is in parallel connection with the transformer, the plurality of groups of capacitors and the energy-saving device; and the fly-wheel switch is in serial connection with the chopper switch, the transformer, the plurality of groups of capacitors and the energy-saving device. The voltage phase and the reactive power parameters of a transmission line can be adjusted, features of voltage reactive power dynamic compensation and unbalance reduction are realized, and actual use demands are met.

Description

Technical field [0001] The invention specifically relates to a smart grid voltage and reactive power adjustment device, belonging to the technical field of smart grid reactive power adjustment. Background technique [0002] In recent years, as one of the national strategic developments of various countries, the smart grid has received continuous attention. The so-called "smart grid" refers to a grid system that can obtain and distribute electricity more intelligently. Smart grids allow the access of various types of power generation and energy storage systems to promote the vigorous development of the electricity market. Through the interaction of supply and demand in the market, smart grids can most effectively manage parameters such as energy, capacity, capacity change rate, and power flow congestion, reduce power flow congestion, and expand the market. In addition, the smart grid optimizes its asset application to make operation more efficient. [0003] The power system is a h...

AI Technical Summary

Problems solved by technology

Chinese Patent No. "201420672058.6" discloses a distributed regulation device suitable for smart grids, which can adjust the voltage phase and reactive parameters of three-phase transmission lines, but the adjustment response speed is relatively slow, and often occurs during the adjustment process. Because it is impossible to reduce some unnecessary output power at any time according to demand, a large amount of electric energy is wasted

Images