Capacitor sharing direct current power flow controller and method supporting bidirectional regulation and control
A DC power flow, bidirectional control technology, applied in the DC power flow controller circuit topology design and operation control, capacitor shared DC power flow controller, capacitor shared three-wire DC power flow controller field, can solve the problem of limited application occasions, unsatisfactory It can realize the active power flow control of multiple DC lines and achieve the effect of improving the dimension of power flow control
Inactive Publication Date: 2019-11-08
SHANGHAI JIAO TONG UNIV
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Problems solved by technology
[0010] To sum up, the DC power flow controllers and their control strategies proposed in [1] and [2] can only realize the active increase / decrease of the power flow of one line, but fail to realize the active power flow control of multiple DC lines. Applications are limited
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[0069] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.
[0070] According to the present invention, a capacitor-shared DC power flow controller supporting bidirectional regulation includes a circuit part, a first control part, a second control part and a battery part;
[0071] The line part includes a line main body, a first node, a bypass switch and a second node; the first node, the bypass switch and the second node are sequentially arranged on the line main body;
[0072] One end of the battery part is electrically connected to the second node, and the oth...
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The invention provides a capacitor sharing direct current power flow controller and method supporting bidirectional regulation and control. The controller comprises a line portion, a first control portion, a second control portion and a cell portion. The line portion includes a line main body, a first node, a bypass switch, and a second node. The first node, the bypass switch, and the second nodeare successively arranged on the line main body. One end of the cell portion is electrically connected to the second node, and the other end is electrically connected to the first node successively through the second control portion and the first control portion. The cell portion includes a capacitor. By reasonably and effectively controlling three groups of series-opposing connection IGBTs on a same side of the capacitor, the device can be ensured to cope with different power flow direction conditions of three direct current lines.
Description
technical field [0001] The present invention relates to the field of power electronic converters and direct current transmission, in particular, to a capacitor-sharing DC power flow controller and method supporting bidirectional regulation, and in particular to a capacitor-sharing three-line inter-wire DC power flow controller supporting bidirectional regulation and DC Power Flow Controller (DCPFC for short) circuit topology design and operation control technology. Background technique [0002] In recent years, the rapid construction of HVDC transmission system projects (for example, the South Australia three-terminal HVDC transmission system based on voltage source converters and the Zhoushan five-terminal HVDC transmission system based on voltage source converters) has attracted academia and industry The world has paid extensive attention to HVDC transmission systems and DC power flow control. In a DC transmission system, the power flow of the DC link is passively determi...
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Login to View More IPC IPC(8): H02J1/12H02J3/38
CPCH02J1/12
Inventor 朱淼刘斯棋钟旭王晗徐莉婷蔡旭
Owner SHANGHAI JIAO TONG UNIV