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Fault self-healing method for power distribution network

A power distribution network, fault self-healing technology, applied in electrical components, circuit devices, emergency protection circuit devices, etc., can solve problems such as long fault recovery time, and achieve the effect of improving power supply reliability and ensuring safe operation.

Active Publication Date: 2014-10-15
长园深瑞继保自动化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing fault self-healing systems either rely too much on the communication network, or can only achieve fault self-healing with a simple grid structure and take a long time to recover from faults. At present, there is no distribution system that can adapt to various complex distribution network structures. Network fault self-healing system

Method used

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  • Fault self-healing method for power distribution network
  • Fault self-healing method for power distribution network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Embodiment one, such as figure 1 As shown, it is the GOOSE network architecture of distributed fault self-healing hand-in-hand main wiring of terminal equipment.

[0046]For the GOOSE configuration of the hand-in-hand main wiring. For the GOOSE virtual terminal configuration of section switch 1, short-circuit signal on the power supply side: not connected, short-circuit signal 1 on the load side: connect to the short-circuit signal of section switch 2, short-circuit signal 2 on the load side: not connected, short-circuit signal 3 on the load side: no Connect; for the GOOSE virtual terminal configuration of section switch 2, short-circuit signal on the power supply side: connect to the short-circuit signal of section switch 1, short-circuit signal 1 on the load side: connect to the short-circuit signal of section switch 3, short-circuit signal 2 on the load side: not connected , load side short circuit signal 3: not connected; configure the GOOSE virtual terminal of sec...

Embodiment 2

[0052] Embodiment two, such as figure 2 As shown, for multiple power supply wiring methods are different, figure 2 It is a more complicated T-connection method, and other connections are similar.

[0053] GOOSE configuration, configuration of the GOOSE virtual terminal of section switch 1: short-circuit signal on the power supply side: no connection, short-circuit signal 1 on the load side: short-circuit signal on the section switch 2, short-circuit signal 2 on the load side: no connection, short-circuit signal on the load side 3: Not connected; configure the GOOSE virtual terminal of section switch 2: short-circuit signal on the power supply side: connect to the short-circuit signal of section switch 1, short-circuit signal 1 on the load side: connect to the short-circuit signal of section switch 3, and short-circuit signal 2 on the load side : Connect to the short-circuit signal of section switch 5, load side short-circuit signal 3: Connect to the short-circuit signal of ...

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Abstract

The invention provides a self-healing method and a self-healing system for faults of a power distribution network, relates to a power electric system, and particularly relates to a fault processing system and a fault processing method of a power grid. The method comprises the followings steps: A. a terminal device is installed at each switch node on the power distribution network, and information interaction is performed between the terminal devices an Ethernet; B. when the power distribution network is in fault, the fault information detected by the terminal is transmitted to an adjacent terminal by each terminal; and C. whether the tripping operation or switch-on operation is carried out or not is judged by the terminals according to the received information or the fault information detected by the terminals, wherein the fault positioning and the fault isolation are realized by the terminal device which is installed at a sectional switch; and the fault recovery is realized by switch-on operation of the terminal device installed at an interconnection switch. With the adoption of the self-healing method and the self-healing system, the power supply reliability of the power distribution network is improved effectively; the automatic fault identification, automatic fault isolation and automatic power supply recovery at a non-fault area of the power distribution network can be realized; and the security operation of a power system is ensured.

Description

technical field [0001] The invention relates to an electric power system, in particular to a fault processing method of a power grid. Background technique [0002] With the rapid development of the economy, the society's demand for electricity is increasing, and the power users have higher and higher requirements for the power supply reliability, power quality, work efficiency and quality service of the distribution network. Using modern electronic technology, communication technology, computer and network technology to organically integrate the monitoring, protection, control, measurement and work management of the power supply department of the distribution network under normal and accident conditions to improve the quality of power supply is the development of smart grid. trend. [0003] The fault self-healing system can automatically detect and identify grid faults, automatically isolate grid faults, and automatically restore grid power supply in non-faulty areas, which...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H7/26H02H3/06H02J13/00
CPCY04S10/40Y04S10/20Y02E60/725Y02E60/00
Inventor 许永军叶志峰李蔚凡林超李俊晨
Owner 长园深瑞继保自动化有限公司
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