A method and system for reactive power compensation of distribution lines
A technology of distribution line and compensation method, applied in the field of intelligent distribution network, can solve problems such as equipment heating, achieve the effect of less switching times, simple scheme, and reducing the probability of overcompensation
Active Publication Date: 2021-06-04
CHINA PETROLEUM & CHEM CORP +1
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[0004] Aiming at the deficiencies in the prior art, the present invention provides a reactive power compensation method and system for distribution lines, which are used to solve the problems caused by too many switching times of capacitors and even overcompensation of distribution lines in the existing reactive power compensation methods. The problem of heating of lines or equipment can be quickly responded to according to the load change of the distribution line, with less switching times, safe and reliable
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[0037] 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 creative efforts fall within the protection scope of the present invention.
[0038] In the first aspect, the embodiment of the present invention provides a method for reactive power compensation of distribution lines, such as figure 1 shown, including:
[0039] S1. Obtain the voltage signal of the distribution line at the current moment; and the current signal of the distribution line at the current moment obtained by the...
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The invention relates to a reactive power compensation method and system for distribution lines. The method includes: obtaining the voltage signal of the distribution line at the current moment; and the current signal of the distribution line obtained by the FTU at the current moment; using the current signal and the voltage signal to obtain the current moment of the distribution line and storing the reactive power; obtaining the historical reactive power of the distribution line at the previous moment; according to the reactive power at the current moment and the historical reactive power, combined with the preset compensation strategy, the amount of reactive compensation is verified, and the Reactive power compensation for distribution lines. The reactive power compensation method of the distribution line provided by the invention is simple, has less switching times, and is safe and reliable.
Description
technical field [0001] The invention relates to the technical field of intelligent distribution network, in particular to a reactive power compensation method and system for a distribution line. Background technique [0002] During the energy conversion process of electric equipment (such as transformers and motors), part of the energy is required to establish a magnetic field. This part of the parameters is only used to establish a magnetic field, not for energy conversion output, so it is called reactive power. In practical applications, if the power equipment of the power grid is continuously switched to the power grid, it will cause changes in the power grid, which will affect the working efficiency of other power-consuming equipment. For this purpose, the reactive power of the grid needs to be compensated. [0003] The reactive power compensation method for the lines in the power grid in the prior art tends to the voltage-reactive power compensation method. The metho...
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IPC IPC(8): H02J3/18
CPCH02J3/1864Y02E40/30
Inventor 李琼刘玉林时振堂刘维功杜红勇邹兵
Owner CHINA PETROLEUM & CHEM CORP