5 results about "Topological optimization" patented technology

The invention discloses a multi-working-condition frame topological optimization method based on a grey clustering algorithm model, and the method comprises the specific steps: carrying out the initial topological optimization of a structure through employing the grey clustering algorithm model, carrying out the pseudo-density of a unit set A, carrying out the clustering of a sample group in the set A according to the correlation between a unit and the structure, determining a clustering index according to a specific actual engineering condition, and then dividing the set A into a deleted unit set B and a reserved unit set C; and filtering and classifying difficult-to-cluster units in a sample according to a distance selection threshold value from the difficult-to-cluster units to a force transmission path, performing grey clustering analysis, dividing A into a deletion unit set B or a reservation unit set C, and taking a frame as an implementation carrier. According to the method, the grey clustering algorithm is applied to the topological optimization design of the structure, the checkerboard phenomenon is effectively inhibited, the manufacturability of the topological optimization result is improved, the frame structure meeting the dynamic and static characteristics is designed, the design and manufacturing period of a product is shortened, and the research and development efficiency and quality of the product are improved.

The load importance-based three-stage topological operation optimization method provided by the embodiment of the invention comprises the following steps: collecting power distribution network operation data after a fault, and establishing a topological structure for fault identification; establishing a load importance evaluation model according to the power-losing charge in the distribution network operation data; searching a distributed power generation device with adjustable power in the island area of the distribution network, and carrying out first-stage topological optimization; establishing a two-stage topological optimization model, and performing load transfer on the standby feeder line and the distributed power generation device; and after load transfer, if a target substation in an overload operation state still exists, establishing a secondary transfer model, and obtaining the optimal transfer load capacity of the target substation. The method can effectively process the decision of the optimal operation mode of the distribution topology under the fault, improves the power supply reliability of the power distribution network, can check and optimize the maintenance mode of the power distribution network, facilitates the regulation and control of the comprehensive analysis of the load of the cloud platform power distribution network, and also facilitates the optimal utilization of the system capacity of the power distribution network.

The invention relates to a direct-current offshore wind plant series-parallel connection mode current collection system planning method. The method comprises the following steps: 1) constructing an abandoned wind electric quantity model of an offshore wind plant under series-parallel connection wiring; 2) considering the wind curtailment electric quantity to construct an offshore wind farm directcurrent series-parallel connection current collection system optimization model; (3) performing topological optimization of the offshore wind plant direct-current series-parallel connection mode; and4) calculating the total cost in the full life cycle in a given topological wiring mode according to the offshore wind plant DC series-parallel current collection system optimization model until the topological structure with the minimum total cost is obtained, and otherwise, returning to the step 3) to perform topological optimization. Compared with the prior art, the method has the advantages that the operation characteristics of the direct-current series-parallel connection wind power plant are considered, the economy is better, and the actual engineering requirements are met.