Intelligent load device and power transmission line intelligent load system

Abstract

The embodiment of the invention discloses an intelligent load device and a power transmission line intelligent load system, and is used for solving the technical problems in the prior art that the electric power energy storage scale development is limited by economic cost and function bottleneck when the balance between power supply and demand is realized through electric power energy storage and multiple higher harmonic waves are generated, the device size is large and the cost is high when a reactive power compensator is adopted. The intelligent load device comprises an energy storage power supply, a bidirectional DC/DC converter and a bidirectional AC/DC converter. The energy storage power supply is connected with the bidirectional DC/DC converter. The bidirectional DC/DC converter is connected with the bidirectional AC/DC converter. The bidirectional AC/DC converter is connected with the load in a power grid. The bidirectional DC/DC converter is also connected with a bidirectional DC/DC control module. The bidirectional AC/DC converter is also connected with a bidirectional AC/DC control module.

Description

technical field [0001] The invention relates to the field of power transmission line voltage regulation, in particular to an intelligent load device and a transmission line intelligent load system. Background technique [0002] With the continuous expansion of the grid scale, the supply of traditional energy is becoming increasingly tight, and the demand for electricity from users is constantly increasing. On the power side, distributed power generation is beginning to be connected to the grid, and the penetration rate of intermittent new energy sources such as solar energy and wind energy in the grid is increasing; On the load side, the use of a large number of power electronic devices and high-power nonlinear loads, such as electric arc furnaces and cold rolling mills, as well as large-capacity single-phase loads, makes the voltage of the low-voltage distribution network unstable and the quality of power supply is uneven. . In order to improve the voltage fluctuation, in ...

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides an intelligent load device and a transmission line intelligent load system, which solves the problem that the large-scale development of electric energy storage is limited by economic costs and functional bottlenecks when the power supply and demand balance is realized through electric energy storage in the prior art. And when the reactive power compensator is used, more high-order harmonics will be generated, the device will be larger in size, and the technical problems of higher cost

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