Evaluation method, device and equipment for operation efficiency of distribution network
A technology of operating efficiency and distribution network, applied in the field of distribution network, can solve problems such as short duration
Active Publication Date: 2019-05-07
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +1
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[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 present invention is to provide a distribution network operation efficiency evaluation method, evaluation device and evaluation equipment, which are used to obtain more accurate distribution network operation efficiency evaluation results by fully tapping the power supply potential of the distribution network.
[0073] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. 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.
[0074] figure 1 It is a flow chart of a method for evaluating the operating efficiency of a distribution network provided by an...
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The invention discloses an evaluation method for the operation efficiency of a distribution network. Considering different reliability requirements of different feeders, flexible reliability constraints of each feeder are set differently, the maximum operation efficiency is taken as an optimization objective, and an evaluation model for the operation efficiency of the distribution network is established and solved according to the reliability constraints and circuit constraints so as to obtain the operation efficiency of the distribution network. The reliability objective of part of the feeders is reduced on the basis of ensuring the overall reliability of the system, and the operation efficiency of the distribution network is evaluated according to the differentiated reliability mode. Compared with the scheme of evaluating the maximum operation efficiency of the distribution network under the N-1 criterion by taking the reliability objective as a rigid constraint in the prior art, theevaluation method further exploits the power supply potential of the distribution network, thereby acquiring a more accurate evaluation result of the operation efficiency of the distribution network.The invention further discloses an evaluation device and equipment with the above beneficial effects for the operation efficiency of the distribution network.
Description
technical field [0001] The invention relates to the technical field of distribution networks, in particular to an evaluation method, evaluation device and evaluation equipment for distribution network operation efficiency. Background technique [0002] The early evaluation method of distribution network operation efficiency is mainly to obtain the maximum power supply capacity of the network under the system flow constraints such as node voltage and branch power, and then divide it by the main transformer capacity to obtain the maximum operation efficiency of the distribution network, but few Considering the impact of network transfer power supply capability, the continuity of power supply after system failure is ignored. Therefore, a power supply capacity assessment method that takes into account the N-1 safety criterion has been developed. This method considers factors such as the interconnection relationship of the main transformer, the load transfer between substations, ...
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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