Transmission and distribution network coordination recovery method considering high-proportion distributed power supply access

A distributed power supply, a high-proportion technology, applied in the direction of electrical components, circuit devices, AC network circuits, etc., can solve the problems of inability to guarantee overall optimization and insufficient utilization of power grid resources

Inactive Publication Date: 2021-02-02
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Abstract
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  • Claims
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Problems solved by technology

The traditional recovery mode of transmission and distribution network fragmentation can easily lead to insuffic

Method used

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  • Transmission and distribution network coordination recovery method considering high-proportion distributed power supply access
  • Transmission and distribution network coordination recovery method considering high-proportion distributed power supply access
  • Transmission and distribution network coordination recovery method considering high-proportion distributed power supply access

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Embodiment Construction

[0051] The present invention proposes a coordinated recovery method for a transmission and distribution network considering the access of a high proportion of distributed power sources. The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0052] figure 1 Shown is a flow chart of the coordinated recovery method of the transmission and distribution network considering the high proportion of distributed power access, including the following steps:

[0053] Step 1: Compare the similarities and differences between the restoration of the transmission and distribution network with a high proportion of distributed power access and the restoration of the traditional transmission and distribution network, and study the impact mechanism of the high proportion of distributed power access on the restoration of the transmission and distribution network;

[0054] Step 2: Analyze the impact mechanism in step 1, compr...

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Abstract

The invention provides a transmission and distribution network coordination recovery method considering high-proportion distributed power supply access. The method comprises the following steps of: firstly, comprehensively considering recovery targets in three aspects of a main unit, a transmission network load and a distribution network load in a system, and establishing a mathematical model forcoordinating the recovery effect of a transmission network layer and a distribution network layer; and then, by introducing a penalty function, changing the output of the distributed power supply to the transmission and distribution network at different stages, and realizing multi-stage transmission and distribution network coordination recovery. A hierarchical sequence method, a backtracking algorithm and a greedy algorithm of multi-objective optimization are combined to carry out optimization solution on the whole transmission and distribution network coordination recovery process. Accordingto the method, the utilization rate of a black-start power supply in a power system after blackout can be improved by changing different outputs of the distributed power supply to the power transmission and distribution network in different stages of blackout, coordinated recovery of the power transmission and distribution network is realized, the recovery efficiency of the power system can be improved, recovery of the power system can be accelerated to a certain extent, and a series of losses caused by blackout are reduced.

Description

technical field [0001] The invention belongs to the technical field of electric power recovery control, and in particular relates to a coordinated recovery method for a transmission and distribution network considering the access of a high proportion of distributed power sources. Background technique [0002] With the construction of smart grid, the penetration rate of Distributed Generation (DG) in the power system continues to increase. Therefore, it is necessary to vigorously develop distributed generation technology to connect distributed generation to the distribution network. Coordinated development is the inevitable trend of power development in the future. However, the continuous increase in the proportion of distributed power access has changed the operation pattern and trend direction of the power system, and has also brought new opportunities and challenges to the restoration of the power system. The continuous improvement of the penetration rate of distributed p...

Claims

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Application Information

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IPC IPC(8): H02J3/38
CPCH02J3/381
Inventor 刘梦玥李少岩顾雪平
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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