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Local self-healing protection method of distribution network automation

A distribution network automation and local technology, applied in the direction of electrical components, circuit devices, etc., can solve problems such as there is no relatively perfect solution, and achieve the effect of optimizing processing, reducing pressure, and reducing impact

Inactive Publication Date: 2012-02-15
任建福
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no perfect method to solve these problems

Method used

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  • Local self-healing protection method of distribution network automation
  • Local self-healing protection method of distribution network automation
  • Local self-healing protection method of distribution network automation

Examples

Experimental program
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Embodiment Construction

[0018] exist figure 1 Among them, through the mutual communication between adjacent devices, the information required for judging the fault point and isolating the fault line is transmitted, and it does not rely on the master station to perform distributed fault identification, isolation and other controls, and it is driven by using the substation protection signal. To prevent misoperation, and when there is a communication failure, it will be expanded according to different situations.

[0019] exist figure 2 As shown in the embodiment, when the feeder fails, equipment 1 and equipment 2 will control switch 2 and switch 3 to turn off, and equipment 3 will control switch 5 to close, so as to complete the processing of the fault and automatically restore the power supply in the non-faulty area. When the feeder fails, at this time, the outlet of the substation trips and a protection signal occurs; after the fault occurs, device 1 detects the fault and sends a fault signal back ...

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Abstract

The invention relates to the field of distribution network automation systems, in particular to a local self-healing protection method for fault recognition and protection, fault isolation and power supply recovery in a distribution network automation system. According to the method, through the driving of substation exit accident master remote signaling, faults can be protected and isolated voluntarily and rapidly in a distributed way by the driving of a substation protection signal and out of the control of a main station, and power is restored to a non-fault region; equipment is prevented from generating misoperation caused by misjudgment by using the substation protection signal, and concentrated control can also be carried out by a main station; and a distributed control function is locked when the main station performs control, therefore the method has favorable misoperation prevention capability to a switch, and the pressure of the main station is reduced.

Description

technical field [0001] The invention relates to the field of distribution network automation systems, in particular to a local self-healing protection method for fault identification, protection, fault isolation and power supply restoration in the distribution network automation system. Background technique [0002] With the rapid development of distribution network automation related technologies, the functions of distribution network automation systems are becoming more and more powerful, and the requirements for distribution network automation systems are also getting higher and higher, especially for fault identification, protection, fault isolation and The restoration of power supply has begun to change from centralized control to distributed control, especially the proposal of local self-healing protection, which requires that the control equipment be local and not rely on the main station to judge the status of the front and rear equipment, that is, separate from the m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J13/00
Inventor 任建福
Owner 任建福
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