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FTU-based distributed type feed line automation system allowable fault processing method

A fault handling method and feeder automation technology, applied in fault locations, information technology support systems, electrical components, etc., can solve problems such as inability to accurately locate faults, fail to locate and isolate faults, and reduce fault handling efficiency, and achieve high engineering application value. , Improve scalability and reliability, precise positioning and isolation

Active Publication Date: 2015-09-16
BEIJING SIFANG JIBAO AUTOMATION +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002]There are two existing feeder automation solutions, one is through a centralized method, but this method relies on communication and centralized controllers, which is prone to communication congestion However, fault location and isolation cannot be performed quickly, and when the centralized controller fails, the feeder automation in the entire area will exit
The other is distributed. This method relies on judging the fault amount information of adjacent circuit breakers to realize fault location. However, the existing solutions are only for simple topological structures. When multiple power sources are running in a closed loop, they cannot accurately Fault location, when multi-power supply open-loop operation, need to modify multiple FTU information, reducing the efficiency of fault handling

Method used

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  • FTU-based distributed type feed line automation system allowable fault processing method
  • FTU-based distributed type feed line automation system allowable fault processing method
  • FTU-based distributed type feed line automation system allowable fault processing method

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Embodiment Construction

[0039] The working principle of the present invention will be described in detail below with reference to the accompanying drawings. like figure 1As shown, there are eight circuit breakers S1 to S8 in the feeder network, S1 to S6 are connected hand in hand, S1 is connected to bus B1, S6 is connected to bus B3, and there is another branch line between S4 and S5, which is connected with S6 and S7, S7 are connected to the busbar B2 at the end of the branch line, and three power sources of power supply 1 to power supply 3 are respectively connected to the three busbars of B1 to B3. The distributed feeder automation system includes FTU1-FTU8 connected to S1-S8 and a communication network connecting FTU1-FTU8. Each FTU monitors the corresponding circuit breaker respectively, detects the electrical quantity information (including voltage, current, and circuit breaker quantity) of the position of the circuit breaker, and sends the trip / close remote control to control the on-off of th...

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Abstract

The invention discloses an FTU-based distributed type feed line automation system allowable fault processing method and is suitable for a feed line network which needs to operate in an open- / closed-loop state and which comprises multiple power supplies, multiple branches and multiple breakers. The system is composed of feeder terminal units (FTUs), which are connected to all breakers of various feed lines, and a communication network. According to the method, fault location and isolation are performed through sending allowable signals between adjacent terminals. When a network topology or an operation mode is changed, the system only needs to change configuration of local terminals and then continue to operate. When communication is interrupted, the expanded fault location and the expanded isolation are achieved through expanded communication. So the feed line automation method by utilizing the adjacent FTU to send the allowable information improves reliability of feed line automation protection, and has better performance compared with an existing distributed type feed line automation scheme.

Description

technical field [0001] The invention discloses a permissive fault handling method for a distributed feeder automation system based on an FTU (Feeder Terminal Unit, feeder terminal device), which belongs to the technical field of grid feeder automation. Background technique [0002] There are two existing feeder automation solutions, one is through a centralized method, but this method relies on communication and centralized controllers, and it is easy to fail to locate and isolate faults quickly due to communication congestion, and when the centralized controller fails , the feeder automation for the entire area will exit. The other is distributed. This method relies on judging the fault quantity information of adjacent circuit breakers to achieve fault location. However, the existing solutions are only for simple topological structures. When the multi-power open-loop operation is performed, multiple FTU information needs to be modified, which reduces the efficiency of faul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/26G01R31/08H02J13/00
CPCY02E60/00Y04S10/20Y04S10/52
Inventor 王家华李庆生吴恒唐广学吴海波王晶明皮显松农静刘晖赵庆明颜霞卞苏东
Owner BEIJING SIFANG JIBAO AUTOMATION
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