Dynamic reactive power compensation device for offshore boosting station

Abstract

The invention relates to a dynamic reactive power compensation device for an offshore boosting station. The dynamic reactive power compensation device comprises a magnetically controlled reactor employing an integrated valve control system and having an oil immersed structure. The magnetically controlled reactor consists of a large oil tank and a small oil tank; the reactor is installed in the large oil tank; the valve control system is arranged in the small oil tank; and the large oil tank and the small oil tank form an integrated structure and are connected electrically, and the internal transformer oil is isolated mutually. A cable in an outgoing state is arranged at the top surface of the magnetically controlled reactor and dry type cable connectors connected with high-voltage cables are also arranged. A cooling device is arranged at the oil tank of the magnetically controlled reactor. A capsule oil storage cabinet integrated with the large oil tank is arranged at the upper part ofthe large oil tank of the magnetically controlled reactor. The magnetically controlled reactor is provided with an automatic controller to realize automatic / hand-operated controlling or wireless-network-based remote controlling. According to the invention, the dynamic reactive power compensation device that has a compact structure and does not need to be installed indoors or in sealed space is suitable for an offshore boosting station; the mounting space is saved substantially; and centralized compensation for submarine cables of the offshore wind farm is realized.

Description

technical field [0001] The invention relates to a dynamic reactive power compensation device for an offshore booster station. Background technique [0002] my country has very rich offshore wind resources. In recent years, offshore wind power has been developed rapidly. The development of offshore wind power has become an important part of my country's energy strategy. [0003] Offshore wind farms are generally connected to onshore power grids through submarine cables, including 35kV or 10kV submarine cables connecting offshore windmills to offshore booster stations and 110kV or 220kV submarine cables connecting offshore booster stations to land power grids. [0004] There is a large capacitance to the ground in the submarine submarine cable, which increases the capacitive reactive current of the line, and a large amount of capacitive reactive current flowing through the series inductance of the line will cause the voltage at the end of the no-load line to rise, resulting in...

AI Technical Summary

Problems solved by technology

[0005] The reactive power compensation device commonly used in offshore wind power is SVG (Static Dynamic Var Generator), which has fast response speed and good compensation effect. Large area, high-power power electronic devices are easily damaged, etc.

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