Operation efficiency evaluation method for power distribution network based on correlation degree and deviation degree
A technology of operating efficiency and deviation degree, applied in the field of evaluation of distribution network development direction, can solve problems such as insufficient quantitative basis and in-depth analysis, insufficient attention, and inability to accurately reflect the operating efficiency of distribution network, so as to improve the power grid characteristics, and the effect of improving the overall level of the city network
Pending Publication Date: 2020-12-25
STATE GRID SHAANXI ELECTRIC POWER CO ECONOMIC & TECHCAL RES INST +2
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Problems solved by technology
However, for the operational efficiency of the distribution network, qualitative analysis is mostly used in domestic production practice, and there has been a lack of in-depth research and application. The indicators used to reflect the operational efficiency of the distribution network and related evaluation methods have not received sufficient attention. The research related to the evaluation of power grid operation efficiency is still lacking in operability and guidance. The objective and reasonable quantitative basis and in-depth analysis are insufficient, which cannot accurately reflect the operation efficiency of the distribution network, and it is difficult to formulate relevant improvement and investment measures. Adapt to the development requirements of modern distribution network and the company's lean management needs
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[0079] 1. Current status of distribution network operation
[0080] 1. Equipment utilization
[0081] (1) Proportion of 110kV public and private substations and public and private lines
[0082] Statistical analysis was carried out on the number of public and private lines and public and special transformers of 110kV distribution network equipment in a certain area. There were 147 110kV substations in a certain city, 335 main transformers, a transformer capacity of 14840MVA, a maximum load of 8056.8MW, and 299 110kV lines. Among them, there are 118 110kV public substations, 262 main transformers, 11975MVA transformer capacity, 7120MW maximum load, 249 110kV lines; 29 110kV dedicated substations, 73 main transformers, 2865MVA transformer capacity, 936.8MW maximum load, 110kV lines 50, the results are shown in the table below.
[0083] Table 4 Proportion of 110kV distribution network equipment dedicated line and special transformer
[0084]
[0085]
[0086] According t...
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The invention discloses an operation efficiency evaluation method for apower distribution network based on correlation degree and deviation degree. The method is characterized in that the correlationdegree, the deviation degree and an analytic hierarchy process are combined and applied to operation efficiency evaluation research of thepower distribution network. From the three directions of influencing the load rate, the operation reliability and the investment benefit of power equipment, the three indexes of the reliability, the economy and the social benefit are decomposed in detail, and the indexes are screened from the three dimensions of the power grid equipment, the grid structure and the operation level to form a first-level index and a second-level index. The second-level indexesare refined to form an operation efficiency evaluation index system of the third-level indexes, and a comprehensive evaluation score is given through the definition of the index system and the calculation of the weight. According to the invention, each influence factor of the power distribution network operation efficiency is given, related indexes are determined, and a system of the power distribution network operation efficiency evaluation method is formed. The operation efficiency of the power distribution network can be evaluated, and the influence of subjective factors on weight values isreduced. The invention provides an effective operation efficiency evaluation method and means for the power distribution network.
Description
technical field [0001] The invention relates to a method for evaluating the development direction of a distribution network, and belongs to the technical field of power grid planning in the electric power industry. Background technique [0002] my country's power supply enterprises usually use the "three rate" indicators to measure the performance of distribution network, that is, the reliability rate reflecting the continuity of power supply, the voltage qualification rate reflecting the voltage quality, and the line loss rate reflecting the operation economy. If combined with the power supply Capacity-related indicators (such as capacity-to-load ratio, etc.) can basically evaluate and analyze the performance of the distribution network in terms of quantity and quality. However, for the operational efficiency of the distribution network, qualitative analysis is mostly used in domestic production practice, and there has been a lack of in-depth research and application. The in...
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IPC IPC(8): G06Q10/06G06Q10/04G06Q50/06
CPCG06Q10/06393G06Q10/04G06Q50/06Y04S10/50Y02E40/70
Inventor 王辉赵刚袁性忠杨柳贾宏刚张鹏张超岳园园王玮超罗璇苏舟曹强飞陈万喜高兴凯
Owner STATE GRID SHAANXI ELECTRIC POWER CO ECONOMIC & TECHCAL RES INST