Feeder automation failure positioning method based on failure backcasting
A technology for feeder automation and fault location, which is applied in the direction of fault location, electrical components, emergency protection circuit devices, etc., can solve the problems that the main station system cannot be located, the fault location is wrongly located, and the communication system has high requirements
Active Publication Date: 2012-10-03
STATE GRID CORP OF CHINA +2
View PDF5 Cites 18 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Its disadvantage is that it requires high-quality communication channels and computer master stations, and has high requirements for communication systems. When the line fails, it is required that the corresponding information can be transmitted to the superior station in time, and the control information sent by the superior station can also be quickly transmitted to the FTU.
When a certain or part of the FTU fails or the communication is interrupted, the master station system may not be able to locate the fault location or locate the fault based on incomplete information
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0017] specific implementation plan
[0018] The specific implementation method of the present invention in the feeder automation system will be further described in detail below according to the drawings in the description and in combination with specific embodiments.
[0019] The method can be implemented on the main station or sub-station of the centralized feeder automation system.
[0020] First you need to define the properties of the switches and nodes. The switch attribute is divided into power point switch, ordinary switch, branch line switch, and contact switch; the node attribute is divided into power node, ordinary node and terminal node (that is, the node at the end of the line), and the node status is divided into normal status and fault status. The node status is normal by default.
[0021] Power point switch: The first switch connected to the power node.
[0022] Normal Switch: A switch with switches on both sides connected to the power node.
[0023] Branc...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a feeder automation failure positioning method based on failure backcasting, which comprises the steps of: establishing a network topology according to a connecting relationship of switches and nodes, when failures occur, detecting that failed switches respectively search failures leftwards and rightwards according to the connecting relationship of the switches and the nodes; when searching that the node is a power supply point, backcasting to a failure point, setting a node state on a path as a failure; and finally, searching stages of nodes at two sides of all switches, if one node at two sides of one switch is in a failure state and other node is in a normal state, judging that the switch is a failed switch, and isolating the failed switch, and using the normal switch connected with the node in a failure stat at one side of the failed switch as an opposite isolation switch. According to the invention, the failure can be accurately and rapidly located, the problem of misjudgment or failure of the whole feeder automatic system due to failure of some switches is solved, and the dependence of the centralized feeder automatic mode to the communication reliability is reduced.
Description
technical field [0001] The invention belongs to the field of power system distribution network automation, and in particular relates to distribution network feeder automation technology. Background technique [0002] Feeder automation (FA, feeder automation) refers to the use of automated devices or systems to monitor the operating status of distribution lines, detect line faults in time, quickly diagnose and isolate faulty areas, and quickly restore power supply to non-faulty areas. [0003] Feeder automation is an important function in distribution network automation. Fault handling is the primary task of feeder automation. Distribution network automation is an inevitable trend of power system modernization. Its main significance lies in: when a fault occurs in the distribution network, quickly find out the fault area Sections, quickly isolate the faulty section, and automatically restore the power supply to users in non-faulty areas in time, thus shortening the power outa...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/08H02H7/26
Inventor 许健李国武金强要在杰张忠民赵春雷张永茂彭斌
Owner STATE GRID CORP OF CHINA