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Power supply recovery method and system based on second-order cone programming

A second-order cone planning and power supply recovery technology, which is applied to information technology support systems, electrical components, circuit devices, etc., can solve problems such as inaccurate branch state descriptions and error in solution results, so as to quickly ensure the level of power supply recovery and solve problems. describe inaccurate effects

Pending Publication Date: 2021-11-09
CHINA ELECTRIC POWER RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when a power failure occurs, the branch power flow method will produce inaccurate descriptions of the branch state, which will lead to errors in the solution results. How to consider the different operating characteristics of the source and load in the power distribution system and ensure the safety of the system? On the basis of operation, it is of great scientific significance and engineering value to ensure the maximum power supply recovery level of important loads

Method used

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  • Power supply recovery method and system based on second-order cone programming
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  • Power supply recovery method and system based on second-order cone programming

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Embodiment 1

[0072] Embodiment 1: as figure 1 As shown, the present invention provides a power supply restoration method based on second-order cone planning, including:

[0073] S1. Bring the obtained switching status, line parameters and distributed power output of the distribution network into the pre-built distribution network power supply restoration model;

[0074] S2. Perform cone relaxation on the distribution network power supply restoration model based on the set relaxation variables;

[0075] S3. Use the second-order cone programming algorithm to solve the power supply recovery model of the distribution network after cone relaxation, and obtain the switch state and distributed power output of the distribution network;

[0076] The power supply recovery model of the distribution network is as follows: the switch state of the distribution network, the relationship between branch nodes and the output of distributed power sources are used as control variables, and virtual nodes are ...

Embodiment 2

[0138] Embodiment 2: Based on the same inventive concept, the present invention also provides a power supply recovery system based on second-order cone programming, including:

[0139] The instantiation module is used to bring the obtained switch status, line parameters and distributed power output of the distribution network into the pre-built distribution network power supply restoration model;

[0140] a cone relaxation module, configured to perform cone relaxation on the power distribution network power restoration model based on the set relaxation variables;

[0141] The solution module is used to solve the power supply recovery model of the distribution network after cone relaxation by using the second-order cone programming algorithm to obtain the switch state and distributed power output of the distribution network;

[0142] The power supply recovery model of the distribution network is as follows: the switch state of the distribution network, the relationship between ...

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Abstract

The invention discloses a power supply recovery method and system based on second-order cone programming. The method comprises the steps of bringing an obtained on-off state, line parameters and distributed power supply output of a power distribution network into a pre-constructed power distribution network power supply recovery model; performing cone relaxation on the power distribution network power supply recovery model based on a set relaxation variable; and solving the power distribution network power supply recovery model after cone relaxation by adopting a second-order cone programming algorithm to obtain the on-off state of the power distribution network and the output of the distributed power supply. According to the power distribution network power supply recovery model, a power distribution network on-off state, a branch node relationship and distributed power supply output are taken as control variables, virtual nodes are added in branches containing switches according to the positions of the switches in the branches, virtual branches are formed based on the virtual nodes, and construction is performed on the basis of branch power flow. Different operation characteristics of sources and loads in the power distribution system are considered, and when a user power failure accident occurs, the maximum power supply recovery level can be rapidly guaranteed.

Description

technical field [0001] The invention relates to the technical field of power system operation analysis, in particular to a power supply restoration method and system based on second-order cone planning. Background technique [0002] According to statistics, more than 80% of user power outages are caused by faults in the distribution network. Therefore, the power distribution system needs to be able to deal with various complex and uncertain faults to meet the needs of users for power supply. Load power supply restoration, as one of the core means to improve the reliability of distribution network power supply, is of great significance to meet users' demand for high-quality power supply. However, when a power failure occurs, the branch power flow method will produce inaccurate descriptions of the branch state, which will lead to errors in the solution results. How to consider the different operating characteristics of the source and load in the power distribution system and e...

Claims

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Application Information

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IPC IPC(8): H02J3/46H02J3/48H02J3/50
CPCH02J3/466H02J3/48H02J3/50H02J2203/20H02J2203/10Y04S10/52
Inventor 高菲宋晓辉盛万兴孟晓丽李建芳张瑜李雅洁赵珊珊徐冬杰张浩男
Owner CHINA ELECTRIC POWER RES INST
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