An intelligent load regulation circuit and control system

Abstract

The embodiment of the invention discloses an intelligent load regulation circuit and control system, and is used for solving the technical problems in the prior art that when a balance between supply and demand is realized through electric power energy storage, electric power energy storage scale development is limited by economic cost and function bottlenecks, many higher harmonics are generated when a reactive compensator is adopted, the device size is relatively large and the cost is relatively high. The intelligent load regulation control system provided by the invention includes an intelligent load regulation circuit, three-phase non-key loads, three-phase key loads, a voltage controller, a central processing unit and a phase locked loop; the intelligent load regulation circuit is in series connection with the three-phase non-key loads to form an intelligent load, and the intelligent load is in parallel connection with the three-phase key loads; the input end of the phase locked loop is connected with a power distribution network A phase, and the output end of the phase locked loop is connected with the central processing unit; the input end of the voltage controller is connected with three phases of the power distribution network, and the output end of the voltage controller is connected with the central processing unit; and the output end of the central processing unit is connected with the intelligent load regulation circuit.

Description

technical field [0001] The invention relates to the field of unbalanced three-phase power, in particular to an intelligent load regulating circuit and a control system. Background technique [0002] With the continuous expansion of the grid scale, the supply of traditional energy is increasingly tight, and the demand for electricity from users is constantly increasing. On the power supply side, distributed power generation systems are 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 continues to increase. ; 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 three-phase currents at the load end unbalanced. Seriously affect the voltage stability of the system, making the quality of power supply uneven. [0003] At pres...

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides an intelligent load regulation circuit and control system, which solves the problem that the large-scale development of electric energy storage is limited by economic cost and functional bottlenecks when the power supply and demand balance is realized through electric energy storage in the prior art, and the adoption of The reactive power compensator will generate more high-order harmonics, the device is larger in size, and the technical problems of higher cost

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