Soft open point power supply restoration method for active distribution network

A technology of intelligent soft switching and power supply recovery, which is applied in the direction of electrical components, circuit devices, AC network circuits, etc., and can solve the problem of less involvement of intelligent soft switching

Inactive Publication Date: 2017-09-29
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Intelligent soft switch (Soft Open Point, SOP) is a new type of intelligent power distribution device that replaces the traditional contact switch. The application of intelligent soft switch will greatly improve the flexibility and controllability of power distribution system operation. Some scholars have carried out preliminary research, but little is involved in the role of intelligent soft switches in the self-healing process of distribution network faults.

Method used

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  • Soft open point power supply restoration method for active distribution network
  • Soft open point power supply restoration method for active distribution network
  • Soft open point power supply restoration method for active distribution network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0100] Embodiment: For this embodiment, first input the impedance value of the line element in the IEEE 33 node system, the active power and reactive power of the load element, and the network topology connection relationship. The calculation example structure is as follows figure 2 Shown, see Table 1 and Table 2 for detailed parameters;

[0101] Table 1 Load connection position and power of IEEE33 node example

[0102]

[0103] Table 2 IEEE33 node calculation line parameters

[0104]

[0105] Connect to 5 groups of photovoltaic power generation systems, the location and capacity are shown in Table 3;

[0106] Table 3 Distributed power supply configuration parameters

[0107] access location

7

13

17

27

30

Capacity / kVA

300

200

300

400

200

[0108] Set a group of intelligent soft switch SOP access test cases to replace the tie switch TS1, such as image 3 As shown, the capacity of the intelligent soft switch is 2.0MVA, ...

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PUM

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Abstract

The invention relates to a soft open point power supply restoration method for an active distribution network. The method is characterized by comprising the following steps: according to the selected existing distribution network, initial parameters are inputted; according to the distribution system structure and the initial parameters, an active distribution network soft open point power supply restoration model is built; according to a standard form of cone programming, two-order cone model transformation is carried out on a nonlinear objective function and constraint conditions in the active distribution network soft open point power supply restoration model; the existing cone programming solution method is adopted for solution for the two-order cone programming model; and a solution result, comprising the voltage amplitude of each node, the restoration load factor of each load and the soft open point transmission power value, is outputted. Multiple system safety and operation constraints are considered comprehensively, and the power supply restoration policy for the soft open point and the distribution network is accurately and quickly solved and determined.

Description

technical field [0001] The invention relates to an intelligent soft switch power supply recovery strategy for an active distribution network, in particular to a second-order cone programming-based intelligent soft switch power supply recovery method for an active distribution network. Background technique [0002] As a part of the power system that directly faces users, the distribution network has the closest connection with users and the most direct impact on users. Compared with the traditional distribution network, the smart distribution network has changed from the original single power distribution role to a new power exchange system integrating power collection, transmission, storage and distribution. Not only will the primary side use distributed power sources and energy storage devices And static var compensator and other equipment to meet the economical, reliable and flexible requirements of the system operation. On the secondary side, advanced distribution automat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00
CPCH02J3/00H02J2203/20
Inventor 孙充勃原凯宋毅王成山李鹏宋关羽赵金利薛振宇韩丰吴志力李敬如
Owner STATE GRID CORP OF CHINA
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