Offshore wind power plant dynamic reactive compensation and resonance suppression system
A resonance suppression and wind farm technology, applied in reactive power compensation, reactive power adjustment/elimination/compensation, wind power generation, etc., can solve problems such as reactive power circulation, low efficiency, etc., to save investment and land occupation, avoid voltage The effect of increasing and rational utilization
Active Publication Date: 2021-10-01
普世通(北京)电气有限公司
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Problems solved by technology
[0007] Aiming at the deficiencies of the existing reactive power compensation device scheme of the offshore wind farm transmission system, the present invention proposes a dynamic reactive power compensation and resonance suppression system for the offshore wind farm, which has dynamic reactive power compensation, resonance suppression, stable voltage at the end of the power grid, and improved wind farm Functions such as high / low voltage ride-through can solve the problems of repeated configuration of reactive power compensation, low efficiency, and reactive power circulation, make full use of the capacitive reactive power of submarine cables, save investment and land occupation of offshore wind farms, and eliminate resonance risks, ensuring The safe and stable operation of the power grid has significant technical and economic benefits
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[0029] An offshore wind farm dynamic reactive power compensation and resonance suppression system consists of three parts: the offshore dynamic inductive reactive power compensation branch, the land side dynamic inductive reactive power compensation branch and the resonance suppression branch. The dynamic reactive power compensation units are respectively installed in Both ends of the high-voltage submarine cable; the resonance suppression branch can only be installed at the land end of the high-voltage submarine cable.
[0030] The overall configuration plan is attached Image 6 shown. Among them, the dynamic inductive reactive power compensation branch on the offshore side adopts a constant voltage control strategy, and the dynamic inductive reactive power compensation branch on the land side adopts a constant reactive power control strategy, and the capacity is considered to be 50% of the charging power of the offshore wind farm when it is no-load.
[0031] During the no-l...
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The invention relates to an offshore wind power plant dynamic reactive compensation and resonance suppression system, which has the functions of dynamic reactive power compensation, resonance suppression, power grid terminal voltage stabilization, improvement of high / low voltage ride through of the wind power plant and the like, can solve the problems of repeated configuration, low efficiency and reactive power circulation of reactive power compensation, and fully utilizes the capacitive reactive power of submarine cables. And investment and land occupation of an offshore wind plant are saved, resonance risks are eliminated, safe and stable operation of a power grid is guaranteed, and remarkable technical and economic benefits are achieved.
Description
technical field [0001] The invention belongs to the field of offshore wind power generation, in particular to a dynamic reactive power compensation and resonance suppression system for an offshore wind farm. Background technique [0002] In recent years, as my country's onshore wind power construction technology has become increasingly mature and offshore wind power resources are more extensive, the national wind power development policy has gradually tilted towards offshore power generation. Compared with onshore wind farms, the advantages of offshore wind farms are mainly that they do not occupy land resources, are basically not affected by topography, have higher wind speeds, larger single-machine capacity of wind turbines, and higher annual utilization hours. Statistics show that China has become the world's largest wind energy producer. As of the end of April 2021, my country's offshore wind power grid-connected capacity reached 10.42 million kilowatts, surpassing the U...
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IPC IPC(8): H02J3/18H02J3/01H02J3/38H02J3/16H02J3/24
CPCH02J3/1864H02J3/01H02J3/381H02J3/16H02J3/241H02J2300/28Y02E10/76Y02E40/30Y02E40/40
Inventor 渠学景陈伟李建丁小刚黄新宇
Owner 普世通(北京)电气有限公司