Intelligent power supply recovery method for self-healing of power distribution network

A technology of intelligent power supply and recovery method, which is applied in the direction of electrical components, circuit devices, AC network circuits, etc., can solve the problems of large number of operation switches, long time consumption, and inability to meet fast power supply recovery, and achieve shortened operation time and fast power supply Recovery effect

Active Publication Date: 2020-05-26
DONGFANG ELECTRONICS +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The power supply recovery scheme in the prior art has the problems of a large number of operating sw

Method used

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  • Intelligent power supply recovery method for self-healing of power distribution network
  • Intelligent power supply recovery method for self-healing of power distribution network
  • Intelligent power supply recovery method for self-healing of power distribution network

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Embodiment Construction

[0043] The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:

[0044] Power supply restoration refers to the process that after the distribution network fails, the system has correctly completed fault location and fault isolation, and the healthy part of the distribution network returns to normal power supply. In the distribution automation system, the state after the feeder fault isolation is completed: the outlet circuit breaker of the feeder where the fault is located and the load switches at both ends of the fault point are in the breaking state. After the fault isolation is completed, in order to realize the fast recovery of power supply for the fault upstream and fault downstream loads, necessary measures should be taken.

[0045] It is relatively simple to restore power supply to the load upstream of the fault. Directly reclosing the outlet circuit breaker of the feeder where the fault is located can immedia...

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Abstract

The invention discloses an intelligent power supply recovery method for self-healing of a power distribution network. The method comprises the steps of firstly, determining a normally-open interconnection switch which can be remotely controlled and the power supply capacity of a corresponding supply area, and calculating a capacity factor for realizing power supply recovery of a fault downstream load; secondly, observing whether the system has the problems of node overvoltage, line power flow overload and the like or not by utilizing the capacity factor and a power flow calculation result of the power distribution network; then, for the problems of voltage and power flow out-of-limit and the like, solving a combination mode of a conventional interconnection switch and a load switch for regional normal power supply recovery by adopting a mode of solving an optimal set of a target function; and finally, after the optimal feasible solution is obtained, directly operating the switch combination mode obtained by calculation to realize regional intelligent power supply recovery. After the normally-open interconnection switches at different positions are closed, through calculation, comparison and analysis in the aspects of power supply capacity, voltage and current out-of-limit and the like, rapid power supply recovery of loads is achieved within the shortest time and the minimum action range of the switches.

Description

technical field [0001] The invention relates to a power supply recovery method for a distribution network. Background technique [0002] A reliable power supply is critical to improving the socio-economic development of our customers. Digitalization is one of the important factors that influence the power grid to move towards a clean energy future. One of the important strategies of distribution automation is to realize the automatic recovery of the distribution network. When the distribution network fails, the affected part of the system must be isolated, and the The sound part is restored. Fault location, isolation and power restoration are important technologies to realize self-healing of distribution network. When a part of the feeder fails, the self-healing reconstruction of the feeder helps to reduce the impact of the failure on customers, thereby improving the reliability of power supply. [0003] Automatic fault location and fault isolation are relatively easy to ...

Claims

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Application Information

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IPC IPC(8): H02J3/00
CPCH02J3/00Y04S10/52
Inventor 潘凯岩赵瑞锋刘海信卢建刚高天亮李波靳力郭文鑫
Owner DONGFANG ELECTRONICS
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