A method for dividing the power supply range after a fault taking dg into account
A power supply range and post-failure technology, which is applied in the field of power supply range division considering DG, can solve problems such as uneven distribution network and increased possibility of power outage events, so as to speed up calculation, improve search efficiency and accurate results effective, feasible
Active Publication Date: 2022-03-01
WUHAN UNIV
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Problems solved by technology
[0003] Due to the unevenness of various energy sources in the distribution network, the possibility of blackout events increases
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[0071] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0072] Introduce the triplet in the knowledge map and add it to a power supply range division method that takes into account DG after solving the fault, to ensure that there is a connection relationship between loads, G=(E,R,S), where E is divided into DG The load within the power supply range, S is the load associated with E, and R represents the relationship between the two loads.
[0073] The constructed knowledge graph is a distribution network topology knowledge graph. It belongs to the category of industry knowledge graph, including a large number of electrical equipment and electrical equip...
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The invention discloses a method for dividing the power supply range after a fault taking DG into account. The method includes: constructing a knowledge map, determining the initial point of the load entity, calculating the total power of the current load, the sum of the importance of the load and the remaining output power of the DG entity; The knowledge map technology finds the node set with the highest load importance; uses the knowledge map technology to search the shortest path set and the required parameters; selects the path with the largest load income, selects the load with the largest income of the load entity, and adds the load to the power supply range. The invention considers the impact of load importance on the topology of the entire distribution network, and takes it as the preferred factor, which is consistent with the actual situation of the topology of the distribution network; uses knowledge graph technology in the search for the most important items and the shortest path search for items , improving search efficiency and result accuracy. Each step is to operate on a series of load point items, which speeds up the calculation speed of the algorithm and is feasible, real-time and practical.
Description
technical field [0001] The invention relates to the field of division method of DG power outage area after a fault occurs in a distribution network, in particular to a division method of a power supply range after a fault taking DG into account. Background technique [0002] Nowadays, a large number of new energy sources and distributed power sources are continuously connected to the power grid for operation, which makes the scale of the distribution network continue to expand and the topology structure gradually becomes complex. With the rapid development of the distribution network, the complex topological network structure puts forward higher requirements for the reliability of power supply. [0003] Due to the unevenness of various energy sources in the distribution network, the possibility of blackout events increases. During the period from the occurrence of the power outage to the repair, by monitoring the state of the contact switch in the distribution network, the ...
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IPC IPC(8): H02J3/00H02J3/38
CPCH02J3/00H02J3/008H02J3/381H02J3/388H02J2203/10H02J2203/20
Inventor 张莲梅高泽璞
Owner WUHAN UNIV