Main-distribution cooperative elastic power recovery method giving consideration to load balance
A load balancing and elastic technology, applied in electrical components, circuit devices, AC network circuits, etc., can solve the problems of complex model, large amount of calculation, and inability to ensure transformer load balancing to the greatest extent, and achieve the effect of high computing efficiency
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Embodiment 1
[0049] like figure 1 , a main-distribution coordinated elastic recovery method that takes into account load balancing, comprising the following steps:
[0050] S1: The equipment failure generates several power-loss islands, and topologically searches all the backup original power supply paths of each power-loss island, and obtains a collection of simplified power-supply paths for each power-loss island.
[0051] S2: Integrate the initial transformer margin P of the main network corresponding to the power supply path at both ends of each power loss island Li and the initial feeder margin P Sj Get the initial supply path margin P Tj , P Tj =min{P Li ,P Sj }.
[0052] S3: Set all power supply paths according to the current power supply path margin P Tj 'Sort, distribute the power supply to the corresponding power-loss island through each power supply path, determine the preliminary position of the sub-position switch of each power-loss island, and obtain a preliminary powe...
Embodiment 2
[0081] This embodiment is used to illustrate the situation that when the bus L1 fails, the power-loss island can restore the power supply through all the backup power supply paths. like figure 2 , L represents the bus, S represents the switch (dark color means closed, white means open), D represents the load (the load value of D12 is 40A, and the rest load value is 20A).
[0082] It is assumed that the feeder margin and transformer margin of each power supply path are shown in Table 1.
[0083] Table 1 Feeder margin and transformer margin of each power supply path
[0084] equipment margin S15 for feeder and S20 for feeder 60 S17 for feeder and S19 for feeder 80 S16 stands for feeder 100 The transformer where L2 is located and the transformer where L4 is located 120 S18 stands for feeder 120 Transformer where L3 is located 220
[0085] When the busbar L1 fails, the three power-loss islands B1, B2, and B3 are powered back t...
Embodiment 3
[0138] This embodiment is used to illustrate the situation that when the bus L1 is faulty, the power-loss island cannot be completely restored to power supply through all the backup power supply paths. same as figure 2 As shown in the figure, L represents the bus, S represents the switch (dark color means closed, white means open), D represents the load (the load value of D1, D4, D21 is 20A, and the other load values are 30A).
[0139] It is assumed that the feeder margin and transformer margin of each power supply path are shown in Table 9.
[0140] Table 9 Feeder margin and transformer margin for each power supply path
[0141] equipment margin S20 stands for feeder 60 S15 for feeder and S19 for feeder 80 S16 for feeder and S17 for feeder 100 Transformer where L2 is located 110 Transformer where L4 is located 150 S18 stands for feeder 150 Transformer where L3 is located 270
[0142] When the busbar L1 fails, the ...
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