DG-included distribution network multi-fault multi-target combined optimization repair recovery strategy obtaining method

An optimization strategy and joint optimization technology, applied in the direction of AC network circuits, single-network parallel feeding arrangements, electrical components, etc., can solve the problems of not considering the mutual influence between emergency repair and restoration, and single contents of emergency repair and restoration

Inactive Publication Date: 2017-08-04
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

[0004] Aiming at the problem that the current distribution network fault emergency repair and restoration content is single, the model is simple, and the mutual influence between emergency repair and restoration is not consid

Method used

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  • DG-included distribution network multi-fault multi-target combined optimization repair recovery strategy obtaining method
  • DG-included distribution network multi-fault multi-target combined optimization repair recovery strategy obtaining method
  • DG-included distribution network multi-fault multi-target combined optimization repair recovery strategy obtaining method

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Embodiment Construction

[0014] The specific implementation manner of the present invention will be further described below in conjunction with the schematic structural diagrams and embodiments. The following examples are only used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0015] Such as Figure 1 The flow chart for obtaining the optimization strategy is shown.

[0016] The present invention comprises the following steps:

[0017] 1) Simplification of multi-fault network of distribution network with DG and feeder

[0018] First of all, when multiple faults occur in the distribution network including DG and feeder, the feeder is equivalent to the equivalent DG, and the distribution network system is simplified to a system containing only distributed power sources and switches, and the fault repair and recovery are performed under the same model Strategy Research. Determine the capacity of the virtual DG according to the power-off load r...

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Abstract

The invention discloses a DG-included distribution network multi-fault multi-target combined optimization repair recovery strategy obtaining method, relating to the field of a power system. The distributed generation included distribution network multi-fault rapid repair and power supply recovery is a strategy with high properties of stage, hierarchy, and sequence. At present, most of researches of the distribution network fault repair recovery are carried out in a separate manner of single fault, single stage, and signal level, and fewer researches are carried on the multi-fault, staged, layered, and multi-target combined repair recovery optimization strategy development. The feed line in the DG included distribution network is equivalent to virtual DG, the controllable load alliance is carried out, and a network topology structure is updated; the multi-fault repair and recovery is subjected to staged and layered optimization model construction; and at the end, the combined optimization model is solved to obtain the optimal rapid repair recovery strategy. The strategy obtaining method has high practical value, shortens the power off time, reduces the power off loss, and improves the electric energy quality.

Description

technical field [0001] The invention belongs to the field of power system protection and control, and aims at obtaining a recovery strategy for emergency repair and recovery by stages, layers, and multi-objective joint optimization for multiple faults in a distribution network containing distributed power sources. Background technique [0002] The continuous and reliable supply of electricity is a necessary condition to maintain people's normal production and life. As an important part of electric energy transmission, distribution network directly affects the quality of power supply to users. According to statistics, more than 80% of domestic power outages are caused by distribution network failures. Especially after the distributed generation (DG) is connected to the distribution network, the system network structure becomes more complex, which poses new challenges to the speed and efficiency of the distribution network to restore power supply. Therefore, when multiple fa...

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Application Information

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IPC IPC(8): H02J3/00H02J3/38
CPCH02J3/00H02J3/381H02J3/388H02J2203/20
Inventor 马瑞张海波颜宏文
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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