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Distribution network reconfiguration method based on complementary constrained full-smooth Newton method

A distribution network reconfiguration and distribution network technology, applied to electrical components, circuit devices, AC network circuits, etc., can solve problems such as distribution network reconfiguration, and achieve the effect of reducing dimensions

Inactive Publication Date: 2018-12-21
STATE GRID TIANJIN ELECTRIC POWER +1
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  • Claims
  • Application Information

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Problems solved by technology

When the scale of the distribution network is relatively large, the number of switches in the distribution network is relatively large, and the distribution network reconfiguration problem becomes a large-scale nonlinear integer combination optimization problem.

Method used

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  • Distribution network reconfiguration method based on complementary constrained full-smooth Newton method
  • Distribution network reconfiguration method based on complementary constrained full-smooth Newton method
  • Distribution network reconfiguration method based on complementary constrained full-smooth Newton method

Examples

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Embodiment 1

[0053] A distribution network reconfiguration method based on complementary constrained fully smooth Newton method, such as Figure 5 shown, including the following steps:

[0054] 1) Simplify the network structure of the distribution network and generate branch groups;

[0055] There are a large number of switches in the distribution network, and the different states of each switch will result in different network topologies, but improper closing or disconnection will lead to the existence of "ring network" or "island" in the network, which does not meet the requirements of the distribution network. topology requirements. Moreover, due to the large scale of the network, in order to improve the computing efficiency, it is necessary to simplify the network to a certain extent. The specific methods are as follows:

[0056] a) Determine the basic loop, such as figure 1 As shown, draw 5 basic loops;

[0057] b) In order to ensure a radial power supply structure, no switch in t...

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Abstract

The invention discloses a distribution network reconfiguration method based on a complementary constraint full-smooth Newton method, comprising the following steps: 1) simplifying the distribution network structure to generate a branch group; 2) establishing a distribution network optimization model according to the generated branch group, wherein the distribution network optimization model comprises an objective function and a constraint condition; 3) solving the distribution network optimization model by using a full-smooth Newton method, and obtaining a distribution network reconfigurationscheme. Compared with intelligent method and heuristic method, this method has the advantages of high searching efficiency and short solving time. The inequality constraint in the optimization model is transformed into equality constraint by introducing smooth function, and the discrete integer value of the variable is obtained in the iterative computation process. The dimension of branch state variable is greatly reduced by branch grouping, which is suitable for large-scale distribution network.

Description

technical field [0001] The invention relates to the technical field of distribution network reconfiguration, in particular to a distribution network reconfiguration method based on complementary constraint full smooth Newton method. Background technique [0002] The distribution network is directly connected with the terminal power users, and its operation status is directly related to the quality of the user's power. For a long time, my country's power system construction process has focused on the middle and neglected the two ends, that is, power transmission, power generation and distribution. The loss is high, the line load is uneven, and a large number of heavy-loaded and light-loaded lines exist at the same time. There are a large number of switches in the distribution network. By changing the closing state of the switch, the network topology of the distribution network can be adjusted, the current direction can be changed, the network loss can be reduced and the overl...

Claims

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Application Information

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IPC IPC(8): H02J3/00
CPCH02J3/00H02J2203/20
Inventor 石伟钊韩晓罡黄林存刘晓林于祥涛陈晓晋宋洋邢秉元李娟缴丽辰杨盛楠葛贝畅
Owner STATE GRID TIANJIN ELECTRIC POWER
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