Power distribution network reliability assessment method and device based on feeder line capacity constraint
A capacity constraint, distribution network technology, applied in data processing applications, instruments, calculations, etc., can solve problems such as insufficient load transfer capacity, true reliability deviation, and inability to fully transfer loads, and achieve reasonable reliability indicators. Effect
Active Publication Date: 2019-08-06
GUANGDONG POWER GRID CO LTD +2
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At present, distribution network reliability evaluation is usually carried out on the premise that the transfer success rate is 100%. However, in actual operating conditions, when a fault occurs on a line with a high Insufficient load transfer capacity will lead to incomplete load transfer. In this case, the calculated reliability evaluation index will have a large deviation from the real reliability. Therefore, it is necessary to study a reasonable evaluation method based on load transfer capacity. The method of grid power supply reliability
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[0048] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.
[0049] For ease of understanding, see figure 1 , an embodiment of a distribution network reliability assessment method based on feeder capacity constraints provided by the present application, comprising the following steps:
[0050] Step 101. Establish feeder capacity constraint conditions according to the acquired resupply capacity of each feeder in the distribu...
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The invention discloses a power distribution network reliability assessment method and device based on feeder line capacity constraint. Based on feeder line capacity constraint conditions in an evaluated regional power grid, The load transfer capacity of a transfer path is considered, the network topology position of the load in the power distribution network in the evaluated area is combined to determine a region to which a load belongs, load outage influence consequences are determined according to the outage influence consequence mapping table; and finally, the reliability index of the power distribution network in the evaluated area is calculated according to the outage time and the outage frequency in the outage influence consequence. Therefore, the power distribution network reliability assessment method provided by the invention is a method for calculating the power distribution network reliability index under the condition of considering the feeder line capacity constraint, andcan avoid the problem that the deviation between the reliability index calculation result and the actual reliability is large when the feeder line capacity constraint is not considered for evaluatingthe power supply reliability of the power distribution network; and the obtained reliability index result is more reasonable and has more guiding significance.
Description
technical field [0001] The present application relates to the technical field of distribution network reliability assessment, in particular to a distribution network reliability assessment method and device based on feeder capacity constraints. Background technique [0002] With the rapid development of power technology, the safe operation of distribution network has become an important part of the safe operation of the entire power system. Therefore, the power supply reliability assessment of distribution network is a key research direction in this field. [0003] The power supply reliability of the distribution network refers to the ability of the distribution system to continuously supply power to users. It is an important indicator for evaluating the power supply capacity of the distribution network and the rationality of planning. At present, distribution network reliability evaluation is usually carried out on the premise that the transfer success rate is 100%. However...
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IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/0639G06Q50/06
Inventor 李浩曹华珍高崇吴亚雄唐俊熙李颖张雪莹王天霖张跃何璇张俊潇陈沛东黄烨李阳
Owner GUANGDONG POWER GRID CO LTD
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