Reactive power compensation device
A compensation device, a technology of static reactive power compensation, applied in the directions of reactive power compensation, reactive power adjustment/elimination/compensation, AC network voltage adjustment, etc., to achieve the effect of improving economic benefits and realizing economic benefits
Inactive Publication Date: 2015-04-08
SOUTHEAST UNIV +5
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Problems solved by technology
[0005] The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art and provide a reactive power compensation device, which can not only solve the problem of reactive power compensation after large-scale intermittent energy sources are connected to the grid, but also realize precise reactive power compensation and voltage control. regulation, so as to meet the power system voltage operation requirements
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[0027] The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:
[0028] The idea of the present invention is to use parallel capacitors as the basic reactive power compensation means, and set it as the third level compensation; in order to realize the fast response of reactive power control, use SVC as the fast control compensation means, set it as the second level compensation; in order to realize Continuity of reactive power control, using SVG as the means of continuous control compensation, set as level I compensation; and adopting a hierarchical response mechanism in the process of reactive power compensation and voltage control, to carry out coordinated control of three levels of mode: first action level I compensation to achieve Fast continuous reactive power compensation, and then action II level compensation to achieve fast discrete reactive power compensation, and finally action III level compensation to ac...
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The invention discloses a reactive power compensation device which belongs to the technical field of reactive power control of electric power systems. According to the reactive power compensation device disclosed by the invention, a parallel capacitor is adopted as a basic reactive power compensation means, and is set as grade-III compensation; for realizing the fast response of reactive power control, a SVC (static Var compensator) is adopted as a rapid control compensation means, and is set as grade-II compensation; for realizing the continuity of reactive power control, a SVG (static Var generator) is adopted as a continuous control compensation means, and is set as grade-I compensation; in the processes of reactive power compensation and voltage control, a graded response mechanism is adopted to carry out three-grade model coordination control, namely, firstly, the grade-I compensation is acted so as to realize rapid continuous reactive power compensation, then, the grade-II compensation is acted so as to realize rapid discrete reactive power compensation, and finally, the grade-III compensation is acted so as to realize large-capacity reactive power compensation. According to the reactive power compensation device, the problem of reactive compensation after large-scale intermittent energies are combined to a grid can be solved, and the precise adjustment on reactive power compensation and voltage control can be realized, so that the requirements of voltage operating of electric power systems can be met.
Description
technical field [0001] The invention relates to a reactive power compensation device, which belongs to the technical field of reactive power control in electric power systems. Background technique [0002] With the rapid development of clean energy technology and the maturity of intermittent energy (photovoltaic energy and wind resources) grid-connected technologies, more and more photovoltaic power sources and wind farms are connected to the grid; the randomness of solar and wind energy leads to active power The randomness of output brings huge uncertainty to the reactive power compensation and voltage regulation of the grid; in the intermittent energy grid-connected system, the power generation capacity of a single power station is small, and the regional photovoltaic power station / wind farm cluster is connected to the grid. Therefore, the required reactive power compensation has the characteristics of fast response, continuous adjustment, and large compensation capacity r...
Claims
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IPC IPC(8): H02J3/18H02J3/16
CPCY02E40/30
Inventor 高山刘宇张海宁孟可风马勇飞施涛朱凌志薛俊茹宋锐贾昆丛贵斌孔祥鹏
Owner SOUTHEAST UNIV