Correlation Determination Method of Influencing Factors of Line Loss Rate
A technology of influencing factors and line loss rate, applied in instruments, data processing applications, AC network circuits, etc., can solve problems such as low effect
Active Publication Date: 2020-04-21
STATE GRID CORP OF CHINA +3
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Problems solved by technology
[0005] The technical problem to be solved by the present invention is how to make differentiated analysis and evaluation of various factors affecting the line loss rate, tap the potential of loss reduction, and avoid using loss reduction measures with high cost and low effect
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[0061] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but should not be used to limit the scope of the present invention.
[0062] A method for determining the correlation of factors affecting line loss rate, such as figure 1 As shown, the method includes the following steps:
[0063] S1. Determine the number of outgoing lines of the lowest-level substation, the number of substations at all levels, and the capacity of substations at all levels according to the construction requirements, planning requirements, and operation requirements of distribution networks at all levels;
[0064] S2. Taking the minimum annual cost per unit power supply area of the power grid as the objective function, taking the cross-sectional area of distribution lines at all levels, the power factor of distribution lines at all levels, the average load...
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The invention discloses a method for determining the correlation of line loss rate influencing factors. The method is characterized in that an objective function aiming at the minimum annual cost per unit area of power supply is proposed, and influencing factors of the line loss rate are set to be variables to be optimized of the objective function; optimized variables of a distribution network under different load densities are acquired by using the proposed objective function under the condition of meeting the voltage loss allowed by lowest-level distribution lines, thus a calculation formula for the line loss rate of the distribution network is built, and finally an influencing law of each single influencing factor for the line loss rate is acquired by using a correlation function according to the line loss rate. The method disclosed by the invention can calculate the correlation between each influencing factor and the line loss rate, has high reference and can provide reference for energy conservation, loss reduction, upgrading and reconstruction of the distribution network.
Description
technical field [0001] The invention relates to the field of power grid distribution, and more specifically relates to a method for determining the correlation of factors affecting line loss rate. Background technique [0002] For the distribution network, accurate assessment of its energy-saving and loss-reducing potential is the premise of scientifically carrying out energy-saving transformation work, and it is also the theoretical basis and fundamental basis for guiding the energy-saving planning and operation of the distribution network. Due to the differences in distribution network load density and power supply radius, the power supply loss of different distribution networks is quite different. It is not reasonable to stipulate the same line loss assessment index, which will easily lead to the failure of energy-saving transformation work. [0003] At present, there are few studies on the evaluation of power grid energy saving and loss reduction potential, especially th...
Claims
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IPC IPC(8): H02J3/00G06Q10/06G06Q50/06
CPCG06Q10/0639G06Q50/06H02J3/00H02J2203/20Y02E40/70Y04S10/50
Inventor 王维洲郭鹏刘福潮汤红卫郑晶晶唐巍杜培东彭晶张建华夏稀渊黄永卫
Owner STATE GRID CORP OF CHINA