Optimization method and device for distribution network short-term maintenance plan
A technology of maintenance plan and optimization method, applied in the field of power system, can solve the problems of not considering load transfer, calculation deviation of equipment maintenance plan economy, and gap of equipment failure rate in distribution network.
A technology of maintenance plan and optimization method, applied in the field of power system, can solve the problems of not considering load transfer, calculation deviation of equipment maintenance plan economy, and gap of equipment failure rate in distribution network.
CN107808200BActive Publication Date: 2020-07-03ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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[0027] In one embodiment, such as figure 1 As shown, a distribution network short-term maintenance plan optimization method, including the following steps:
[0028] Step S110: Obtain the upper-level optimization model, the upper-level optimization constraints, the lower-level optimization constraints, the harmony algorithm parameters, the device number to be tested, and the predicted fluctuation curve, wherein the harmony algorithm parameters include the size value S of the harmony memory bank hm and the maximum number of iterations N max .
[0029] Specifically, the upper-level optimization model is established in advance according to the parameters of the upper-level optimization model. The parameters of the upper-level optimization model include the total number of equipment to be overhauled, the total number of maintenance periods, the outage load caused by maintenance during period t, the power failure loss of unit load during period t, and The maintenance status of equ...
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The invention relates to a short-time overhaul plan optimization method and apparatus for a power distribution network. According to an upper layer optimization model, upper layer optimization constraint conditions, the size of a harmony memory library, a to-be-detected equipment number and a predicted fluctuation curve, a feasible solution with the same size as the harmony memory library and a first fitness value corresponding to the feasible solution are obtained; according to harmony algorithm rules and harmony algorithm parameters, a new solution is obtained; according to the new solution,lower layer optimization constraint conditions and the to-be-detected equipment number, lower layer optimization is performed, and a lower layer optimization scheme is output; according to the upperlayer optimization model, the lower layer optimization scheme, the new solution, the to-be-detected equipment number and the predicted fluctuation curve, a second fitness value is obtained; accordingto the second fitness value and the first fitness value corresponding to a worst solution of the harmony memory library, the harmony memory library is updated; an updating frequency is iterated to obtain an iterative frequency; and when the iterative frequency reaches a maximum iterative frequency, the updated harmony memory library is output. The power supply reliability of the power distributionnetwork is improved.
Description
technical field [0001] The invention relates to the field of power systems, in particular to a method and device for optimizing short-term maintenance plans of distribution networks. Background technique [0002] As an important link in the operation and management of distribution network, distribution network maintenance can effectively reduce the failure rate of equipment and reduce the risk of distribution network operation, and plays an important role in ensuring the safety of distribution network operation and improving the reliability of power supply. [0003] At present, domestic and foreign research on distribution network equipment maintenance is mainly divided into long-term maintenance plans based on risk theory and short-term maintenance plans based on equipment status assessment, but the traditional long-term maintenance plan based on risk theory is mainly based on the analysis of equipment failures. However, there is still a large gap between the prediction of ...
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Patent Timeline
03 Jul 2020
Publication
CN107808200B
- IPC
- G06Q10/00; G06Q10/04; G06Q10/06; G06Q50/06
- CPC
- G06Q10/04; G06Q10/06; G06Q10/20; G06Q50/06
- Inventors
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