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Regional energy internet multi-stage power distribution network fault recovery method and system

A distribution network fault and energy Internet technology, applied in the field of energy Internet, can solve problems such as distribution network fault recovery without research results, reduce losses and fault recovery costs, improve fault recovery capabilities and reliability levels, and quickly fail Recovery effect

Pending Publication Date: 2022-04-05
CHINA ELECTRIC POWER RES INST +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the research on the regional energy Internet mainly focuses on planning and operation control, and the research on fault recovery and energy supply reliability is still in its infancy. Among them, the research on the fault recovery of the energy Internet is mainly focused on the multi-energy coupling of the energy transmission network. The support problem and the energy supply recovery problem when the internal components of the IES fail, there is no research result on the distribution network fault recovery

Method used

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  • Regional energy internet multi-stage power distribution network fault recovery method and system
  • Regional energy internet multi-stage power distribution network fault recovery method and system
  • Regional energy internet multi-stage power distribution network fault recovery method and system

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Embodiment 1

[0114] In order to achieve the above purpose, the electrical system structure of the regional energy Internet with the distribution network as the core proposed by the present invention is as follows: image 3 As shown in the figure, the dotted line part of the horizontal dot in the figure is the tie switch, and the IES part is the user-side integrated energy system connected to the distribution network. The dotted line segment composed of short lines is the tie line between the IES and the power grid. To buy and sell electricity to the grid, the transmission power on the tie line is referred to as tie line power for short.

[0115] A regional energy Internet multi-stage distribution network fault recovery method proposed by the present invention, such as Figure 4 As shown, it includes: when a fault occurs in the distribution network, the fault recovery strategy corresponding to the stage is gradually implemented in the order of multiple pre-established fault recovery stages,...

Embodiment 2

[0271] Based on the same inventive concept, the present invention also provides a regional energy Internet multi-stage distribution network fault recovery system, including: an adjustment module, used to gradually restore the fault in the order of multiple fault recovery stages established in advance when the power grid fails. Execute the fault recovery strategy corresponding to the stage, and adjust each integrated energy system or each node of the distribution network until the power supply of each node in the distribution network is restored;

[0272] Wherein, the fault recovery stage includes in order of execution: a switching operation stage; a scheduling adjustable resource stage and a forced supply stop stage;

[0273] The regional energy internet includes a distribution network and multiple integrated energy systems interconnected through the distribution network.

[0274] The adjustment module in this embodiment specifically implements the regional energy internet mul...

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Abstract

The invention provides a multi-stage power distribution network fault recovery method and system in a regional energy internet, and the method comprises the steps: carrying out the fault recovery strategy of each fault recovery stage step by step in order when a power distribution network breaks down, and adjusting the load of each node of each comprehensive energy system or the power distribution network until the power supply of each node in the power distribution network is recovered; the staged fault recovery strategy and recovery process established by the invention can realize effective and rapid fault recovery of the power distribution network under different fault influence degrees; meanwhile, the supporting effect on the fault recovery process of the power distribution network is achieved by fully utilizing the characteristics of coupling, complementation, mutual assistance, multi-energy substitution and the like of multiple energy sources in the regional level energy internet, and the fault recovery capacity and the reliability level of the power distribution network are effectively improved; according to the method, the load importance degree and various equipment constraints are comprehensively considered, multi-energy resources in the regional energy internet are fully utilized, and loss and fault recovery cost caused by energy supply interruption under the fault condition are reduced.

Description

technical field [0001] The invention relates to the field of energy internet, in particular to a method and system for recovering from faults in regional energy internet multi-stage distribution network. Background technique [0002] The Energy Internet takes the power system as the core and breaks the existing mode of separate planning, design and operation of various energy supply systems such as power supply, gas supply, cooling supply, and heat supply. In the process of planning, design, construction and operation , to organically coordinate and optimize the distribution, conversion, storage, consumption and other links of various energy sources, and to make full use of renewable energy in a new regional energy supply system. Based on different application scenarios and scales, Energy Internet can be divided into user level, regional level and cross-regional level. Among them, the regional energy Internet is a regional social comprehensive energy supply network formed b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/26H02H7/28H02H3/06H02J3/46
CPCY02E10/56
Inventor 刘伟崔艳妍韦涛赵洪磊谷毅张翼陈海孟晓丽张伟王帆王雅丽张甲雷孟斌刘思革盛万兴赵明欣闫涛孙洲梁昊陈振华刘苑红惠慧刘姝嫔王昕萌李鹏丽
Owner CHINA ELECTRIC POWER RES INST