An evaluation method, evaluation device and evaluation equipment for distribution network operation efficiency
A technology of operating efficiency and distribution network, applied in the field of distribution network, can solve problems such as short duration, and achieve the effect of accurate evaluation results of distribution network operation efficiency
Active Publication Date: 2022-05-24
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +1
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Problems solved by technology
[0003] However, for the calculation method of the distribution network operating efficiency of the distribution system considering the N-1 safety criterion, the grid needs to rigidly meet the N-1 check at the peak load moment, but in the actual grid operation process, the peak load is usually The average load is several times and the duration is very short, the operating efficiency of the distribution network evaluated based on this principle will have a large margin
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[0072] The core of the invention is to provide an evaluation method, an evaluation device and an evaluation device for the operation efficiency of the distribution network, which are used to obtain a more accurate evaluation result of the operation efficiency of the distribution network by fully tapping the power supply potential of the distribution network.
[0073] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0074] figure 1 A flow chart of a method for evaluating the operation effi...
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The invention discloses an evaluation method for the operation efficiency of a distribution network. Considering the different reliability requirements of different feeders, the flexible reliability constraint conditions of each feeder are set through differentiation, and then the maximum operation efficiency is the optimization goal. According to the reliability Constraint conditions and circuit constraints establish and solve the distribution network operation efficiency evaluation model, obtain the distribution network operation efficiency, and reduce the reliability target of some feeders on the basis of ensuring the overall reliability of the system. Compared with the scheme of evaluating the maximum operating efficiency of the distribution network under the N-1 criterion in the existing technology, which takes the reliability target as a rigid constraint, it further excavates the power supply potential of the distribution network, thus obtaining A more accurate evaluation result of distribution network operation efficiency is obtained. The invention also discloses an evaluation device and evaluation equipment for the operating efficiency of a distribution network, which have the above beneficial effects.
Description
technical field [0001] The invention relates to the technical field of distribution network, in particular to an evaluation method, evaluation device and evaluation equipment for the operation efficiency of distribution network. Background technique [0002] The early evaluation methods of distribution network operating efficiency mainly obtained the maximum power supply capacity of the network under the system power flow constraints such as node voltage and branch power, and then divided it by the main transformer capacity to obtain the maximum operating efficiency of the distribution network. Considering the influence of network transfer power supply capability, the continuity of power supply after system failure is ignored. Therefore, a power supply capacity evaluation method that takes into account the N-1 safety criterion has been developed. This method considers the main transformer interconnection, load transfer between substations, and the interconnection structure o...
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IPC IPC(8): H02J3/00
Inventor 白浩袁智勇于力史训涛陈柔伊
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD