Movable model device of system of offshore wind power synchronized through flexible DC (Direct Current) power transmission

Abstract

The invention discloses a movable model device of a system of offshore wind powder synchronized through flexible DC (Direct Current) power transmission. The movable model device comprises a main circuit system and a control protection system, wherein the main circuit system comprises an offshore wind power generator unit simulation device, a flexible DC power transmission system, an AC (Alternating Current) bus and a movable model grid, the flexible DC power transmission system is respectively connected with the offshore wind power generator unit simulation device and the AC bus through solid switches and consists of an even number of structural units, wherein each structural unit comprises a converter transformer, a reactor, a voltage source type converter, a DC capacitor, a grounded circuit, a DC line, a solid switch and voltage and current mutual inductor elements, and the control protection system comprises a background computer, a microcontroller system and a data acquisition card system. The movable model device disclosed by the invention provides a reliable and convenient research platform and test environment for a main circuit design, dynamic response characteristic analysis, control policy design and control system of the system of offshore wind powder synchronized through flexible DC power transmission.

Description

technical field [0001] The invention relates to the electrical industry, in particular to a dynamic model device for an offshore wind power grid-connected system via flexible direct current transmission, which is used for the joint operation research of wind power and energy storage devices. Background technique [0002] In recent years, countries all over the world are competing to increase the utilization of wind energy resources. Due to the characteristics of offshore wind power that does not occupy valuable land resources, is less affected by topography, is rich in wind energy resources, and has a large single-unit capacity, the development of large-scale offshore wind farms has become a major trend in the use of wind energy in the world. The use of flexible DC transmission grid connection can overcome the limitation of the distance of submarine AC cables to realize long-distance offshore wind power grid connection; flexible DC transmission grid connection can alleviate ...

AI Technical Summary

Problems solved by technology

The 200810038541.8 Chinese patent only provides a control system for offshore wind power flexible DC transmission converters in the field of power transmission technology in wind power generation that uses a double-loop controller to realize the decoupling control of active power and reactive power of the converter, and the control system exists The disadvantage is that the active power controller of the offshore sending-end converter is difficult to meet the active power balance between the wind farm and the converter.

[0005] 2. Does not involve the main circuit design of the moving mold device and the circuit design of the control system

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