Power-flow controller for flexible direct current power distribution network and control method thereof
A power flow controller and flexible DC technology, applied to AC networks with different sources of the same frequency, etc., can solve the problems of reducing the amount of simulation calculation, difficulty in analysis and research, and increasing computing time, so as to reduce the amount of computing and maintain system stability. , the effect of improving efficiency
Active Publication Date: 2017-07-14
SHANGHAI JIAO TONG UNIV
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Problems solved by technology
[0004] For the planning and analysis of the distribution network, it is generally necessary to use Simulink, PSCAD and other computer simulation software to carry out modeling and simulation research on the system. However, as the scale of the distribution network system continues to increase, the calculation time required for the simulation research is also greatly increased. , which brings difficulties to the actual analysis and research. Therefore, under the premise of ensuring a certain accuracy, ignoring the switching characteristics of power electronic switching devices can greatly reduce the amount of simulation calculations and make the simulation research of large-scale flexible DC distribution networks possible.
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[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments.
[0039] The present invention proposes a power flow controller for flexible DC distribution network and its control method, which is used for the power flow controller of flexible DC distribution network, based on the power conservation of power sources on both sides, and the power input and output relationship is as follows: P output =P input +P loss , where P output Indicates the output power of the output side of the power flow controller, P input Indicates the input power of the input side of the power flow controller, P loss Indicates the p...
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The present invention discloses a power-flow controller for a flexible direct current power distribution network and a control method thereof. The controller comprises two power source models at an input side and an output side and a power-flow control module, and is connected with a direct current power distribution network with the same voltage grade to realize the control of the size and the direction of the power flow in the direct current power distribution network. The power-flow controller for the flexible direct current power distribution network and the control method thereof realize the simulation of the voltage power characteristics of a real flexible direct current power distribution network power flow controller to allow the calculated amount to be smaller in the computer simulation analysis and allow the simulation analysis of a large-scale complex flexible direct current power distribution system to be possible.
Description
technical field [0001] The present invention relates to the technical field of DC distribution network, in particular to a power flow controller and a control method for a flexible DC distribution network. Background technique [0002] In the 1990s, with the rapid development of power electronics technology, DC power distribution began to receive attention, and countries such as the United States, Europe, and Japan began research on DC power distribution in data communication centers. DC power distribution technologies in other special application areas such as warships, aviation and hybrid electric vehicles are also becoming more mature. At present, my country's high-voltage DC transmission technology and low-voltage DC power distribution technology for communications, ships, subways, etc. have been relatively mature. my country has started research on flexible DC distribution networks since 2009. Although it started late, the research direction involves all aspects of DC ...
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IPC IPC(8): H02J3/06
CPCH02J3/06
Inventor 解大喻松涛赵祖熠李岩李巍巍
Owner SHANGHAI JIAO TONG UNIV