Distribution network maintenance optimization method based on distributed photovoltaic

A technology of distributed photovoltaics and optimization methods, applied in the direction of constraint-based CAD, design optimization/simulation, electrical digital data processing, etc., can solve threats to the safety of maintenance personnel, short-circuit current levels of distribution networks, power quality, and relay protection. System stability impact and other issues

Inactive Publication Date: 2019-01-01
国网安徽省电力有限公司岳西县供电公司 +2
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Problems solved by technology

A large number of distributed power sources are connected to the grid, so that the distribution network changes from a traditional radial single-ended network to a multi-terminal network interconnected between power sources and users. The power flow no longer flows unidirectionally from the busbar of the substation to each load. There may be distributed power sources operating in isolated islands in t

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  • Distribution network maintenance optimization method based on distributed photovoltaic
  • Distribution network maintenance optimization method based on distributed photovoltaic
  • Distribution network maintenance optimization method based on distributed photovoltaic

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Embodiment Construction

[0106] In order to have a further understanding and understanding of the structural features of the present invention and the achieved effects, a detailed description is provided in conjunction with preferred embodiments and accompanying drawings, as follows:

[0107] The design idea and principle of the present invention: the preparation of the distribution network maintenance plan actually belongs to an optimization problem with constraints. When the obtained maintenance plan satisfies all constraints, the plan is said to be feasible. Among many feasible schemes, the scheme with the best objective function value is the optimal solution sought. According to this guiding ideology, the optimization model of the maintenance plan can be established. The established model often needs to be solved through complex mathematical algorithms, and the result of the solution is the theoretically optimal distribution network maintenance plan.

[0108] The present invention starts with an ...

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Abstract

The invention discloses a distribution network overhaul optimization method based on distributed photovoltaic, which comprises the following steps: S1, construction of an overhaul time optimization model; S2, Construction of load transfer path optimization model; S3, the solution of the model. The invention establishes a joint optimization model of equipment overhaul time and load transfer path considering a plurality of constraint conditions, and adopts an improved genetic algorithm to solve the problems of equipment overhaul time optimization and load transfer path optimization, so as to obtain the global optimization. Firstly, the maintenance time is optimized, and then the load affected by the maintenance is transferred to other feeder lines through the appropriate path through the optimization of load transfer path, so as to obtain the optimal maintenance plan. On the premise of ensuring the safe operation of the system, the power supply reliability of the system can be improved to the maximum extent, repeated power outages can be avoided, and the power outage losses of users and power supply enterprises can be reduced.

Description

technical field [0001] The invention relates to the technical field of power grid maintenance, in particular to a distribution network maintenance optimization method based on distributed photovoltaics. Background technique [0002] In recent years, with the intensive introduction of policies at all levels, distributed photovoltaic power has developed rapidly. A large number of distributed power sources are connected to the grid, so that the distribution network changes from a traditional radial single-ended network to a multi-terminal network interconnected between power sources and users. The power flow no longer flows unidirectionally from the busbar of the substation to each load. There may be distributed power sources operating in isolated islands in the region, causing reverse power transmission and becoming a new risk that threatens the safety of maintenance personnel. In addition, the connection of a large number of distributed power sources to the low-voltage distr...

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Application Information

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IPC IPC(8): G06F17/50G06Q10/04G06Q50/06
CPCG06Q10/04G06Q50/06G06F2111/04G06F30/20Y04S10/50Y02E40/70
Inventor 徐孟霞张二龙钟成元陈祥平朱代发甘新华王富根赵吴鹏莫平生
Owner 国网安徽省电力有限公司岳西县供电公司
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