Reactive power optimization method and device of power distribution network
An optimization method and technology of power distribution network, applied in circuit devices, reactive power compensation, reactive power adjustment/elimination/compensation, etc., can solve the problem that historical data is easily overlooked, increases the computational complexity of the point selection method, and cannot be effectively obtained. Utilize and other problems to achieve the effect of accurate calculation results, simplified process and high efficiency
Active Publication Date: 2017-07-14
CHINA ELECTRIC POWER RES INST +2
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Problems solved by technology
With the complex network structure and many parameters of the distribution network, the calculation complexity of the point selection method is increased. On the other hand, a large amount of historical data in the distribution network is easy to be ignored and cannot be effectively used in reactive power optimization.
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[0038] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0039] 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. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0040] A reactive power optimization method for a distribution network provided by the present invention, such as figure 1 shown, including:
[0041] 101. Obtain the reactive power of each no...
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The invention relates to a reactive power optimization method and device of a power distribution network. The method comprises the steps of acquiring a reactive power of each node from historical data at a historical moment i; determining a reactive power mean vector of each node at the historical moment i according to the reactive power of each node at the historical moment i; and determining a reactive power compensation quantity vector of each node at the historical moment i according to covariance between the reactive power mean vector of each node at the historical moment i and reactive power vectors of each node from the historical data at other historical moments. According to the technical scheme provided by the invention, a power grid is optimized in real time by a large amount of historical data of the power distribution network, the historical data of the nodes of the power distribution network form a big-data random matrix architecture, a reactive power compensation result is obtained by analyzing the covariance of the matrix, and with increase of data quantity, the analysis operation of the system is more accurate and efficient and is simplified.
Description
technical field [0001] The invention relates to the field of reactive power optimization of distribution networks, in particular to a method and device for reactive power optimization of distribution networks. Background technique [0002] Most of the active power sources in the power system are concentrated in various power plants. In addition to generators, reactive power sources also include capacitors and various static var compensation equipment, which are scattered in various substations. Supplying active power and electric energy must consume energy, but once the reactive power supply is set up, it can be used at any time. The reactive power consumption in the system is much greater than the active power consumption. The reactive power loss mainly includes reactive power load, transformer reactive power loss and Power line reactive power loss. The operation or design department of the power system generally compiles the reactive power balance table or the voltage cur...
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IPC IPC(8): H02J3/18
CPCH02J3/18H02J2203/20Y02E40/30
Inventor 盛万兴孟晓丽刘科研贾东梨何开元胡丽娟叶学顺董伟杰刁赢龙唐建岗王晨钟
Owner CHINA ELECTRIC POWER RES INST