Unlock instant, AI-driven research and patent intelligence for your innovation.

A distribution network fault load transfer and power recovery method

A technology for power distribution network faults and load transfer, applied in circuit devices, AC network circuits, and emergency response AC circuit layout, etc., can solve the problems of complex implementation, heuristic methods do not guarantee to find the optimal solution, long calculation time, etc. , to achieve the effect of increasing accuracy and reliability

Active Publication Date: 2020-08-04
GUANGDONG POWER GRID CO LTD +1
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to overcome the current problem of using heuristic search to solve the problem of load transfer of distribution lines, but the heuristic method does not guarantee to find the optimal solution, the implementation is complicated, and the calculation time is long

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A distribution network fault load transfer and power recovery method
  • A distribution network fault load transfer and power recovery method
  • A distribution network fault load transfer and power recovery method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] A distribution network fault load transfer power supply recovery method, characterized in that it includes the following steps:

[0069] S10. After the fault occurs, the substation outgoing line switch or the automatic switch upstream of the fault point trips, and the fault point is searched from the trip switch. The switch that isolates the fault upstream of the fault point is named the forward isolation switch; the switch that isolates the fault downstream of the fault point Named as the backward isolating switch; the forward isolating switch and the backward isolating switch isolate the faulty section;

[0070] S20. Build a fault recovery tree, each load point is a node, and there are n in total; the load point directly connected to the backward isolating switch is the root node of the fault recovery tree, and the load point directly connected to the transfer switch and distributed power supply of the adjacent line The load node is the transfer leaf node, and the oth...

Embodiment 2

[0119] The distribution network fault load transfer and power supply recovery method provided in this embodiment, figure 2 Wiring diagram before failure. The squares in the figure represent the outlet switches, and the circles represent the switches on the feeder, all of which are controllable; solid means on, and hollow means off. L means the load, and the number below it means the load. S represents the power supply, and the number below it represents its capacity. R is the line and the switch on it, and the number below it indicates its carrying capacity.

[0120] When the fault point is at L1, the forward isolating switch R1 of L1 is turned off, and the backward isolating switch R2 is also turned off to isolate the fault point L1.

[0121] 1.3 The calculation process of step 1 is as follows image 3shown. Propel from S2, S3, S4 extension feeder to fault point L1 respectively, and calculate the remaining resupply quantity, total resupply quantity, and non-resupply qua...

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

No PUM Login to View More

Abstract

A power distribution network fault load transfer power restoration method. An optimal solution can be found by means of two times of tree-shaped traversal of a power distribution line, a feasible solution is found by means of the first time of traversal, and the optimal solution is formed by means of the second time of traversal by combining a transfer path. The algorithm can simply and quickly achieve load transfer and can meet real-time application requirements. The algorithm is simple and efficient, can adapt to restriction of line current-carrying capacity, finds a feasible solution for restoring power supply to the maximum extent by means of root traversal search after distribution line tree topology, and then combines the transfer path to form the optimal solution with a minimum operation. Therefore, the maximum load transfer can be achieved by means of simple and rapid utilization of the minimum operation amount to meet the real-time application requirements.

Description

technical field [0001] The invention belongs to the field of electric power system automation, and in particular relates to a method for transferring faulty loads of a distribution network to supply and restore power. Background technique [0002] Distribution automation is an important part of smart grid, and distribution network fault handling is the core content of distribution automation, which is of great significance for improving the reliability of power supply. [0003] The distribution network of the regional grid generally operates in open loop. When a certain section of the distribution network or equipment fails, the switch of the outgoing feeder of the substation trips, and the emergency repair personnel inspect the feeder after receiving the notification from the dispatcher monitor, and then isolate the fault after finding out the fault point, and restore the power supply at the front section of the feeder . For the feeder located at the rear section of the f...

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
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/06
CPCH02J3/001H02J3/06H02J2203/20
Inventor 黄小耘欧阳卫年黄红远
Owner GUANGDONG POWER GRID CO LTD