Power distribution network load transfer method and device, equipment and storage medium

A technology of load transfer and distribution network, applied in the field of distribution network, can solve problems such as poor load transfer effect, achieve the effect of improving reliability, improving load transfer effect, and improving load transfer capacity

Active Publication Date: 2021-10-15
STATE GRID HEBEI ELECTRIC POWER RES INST +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a distribution network load transfer method, device, equipment and storage medium to solve the problem of poor load transfer effect existing in the existing load transfer scheme

Method used

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  • Power distribution network load transfer method and device, equipment and storage medium
  • Power distribution network load transfer method and device, equipment and storage medium
  • Power distribution network load transfer method and device, equipment and storage medium

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0093] When the load transfer characteristic is load transfer utilization rate, the rated load capacity of the non-fault section is taken as the value and weight of the knapsack algorithm, and the available load capacity is taken as the total weight of the knapsack algorithm, and the knapsack algorithm is used to determine the maximum The non-faulty section combination of load transfer utilization ratio, where the load transfer utilization rate is the ratio of all weights in the non-faulty section combination to the total weight;

[0094] All the non-faulty sections in the non-faulty section combination with the maximum load transfer utilization rate are determined as the target non-faulty sections.

[0095] First, a brief description of the 0-1 knapsack problem:

[0096] Suppose there are N kinds of items to be selected, each item is only 1 and indivisible, the value of item j is v(j), the weight is w(j), there is only 1 backpack and the total weight of the items that can be ...

no. 2 example

[0105] When the load transfer characteristic is the load level, sort multiple non-faulty sections according to the order of the load level from high to low and the distance between the non-faulty section and the target backup power supply from near to far;

[0106] Calculate the first difference between the total capacity of the rated load capacity of the first N non-faulty sections and the available load capacity, and the second difference between the total capacity of the rated load capacity of the first N+1 non-faulty sections and the available load capacity Value, N is a positive integer;

[0107] If the first difference is less than zero and the second difference is greater than zero, the top N non-faulty segments are determined as target non-faulty segments.

[0108] For all de-energized loads downstream of the fault point P i , sorting based on the importance of loads, that is, to restore first-level loads first, and then consider other ones. The purpose is to restore ...

no. 3 example

[0114] In the case that the load transfer characteristic is the load, sort the multiple non-faulty sections in the order of the load from large to small and the distance from the target backup power supply from near to far;

[0115] Calculate the third difference between the total capacity of the rated load capacity of the first M non-faulty sections and the available load capacity, and the fourth difference between the total capacity of the rated load capacity of the first M+1 non-faulty sections and the available load capacity Value, M is a positive integer;

[0116] If the third difference is less than zero and the fourth difference is greater than zero, the first M non-faulty segments are determined as target non-faulty segments.

[0117] For all de-energized loads downstream of the fault point P i , based on the perspective of load size, regardless of the load importance, the purpose of which is to reduce line loss and improve power supply efficiency.

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Abstract

The invention is suitable for the technical field of power distribution networks, and provides a power distribution network load transfer method and device, equipment and a storage medium, and the load transfer method comprises the steps: when a fault occurs in a target section of a power distribution network, according to a Dijkstra algorithm and the network topology information of the section of the power distribution network, determining a plurality of non-fault sections corresponding to the target section in the power distribution network and a target standby power supply for performing load transfer on the non-fault sections; under the condition that the available load capacity of the target standby power supply is smaller than the total load capacity of the rated load capacities of all the non-fault sections, determining a target non-fault section to be subjected to load transfer in the plurality of non-fault sections according to a preset load transfer algorithm corresponding to the load transfer characteristics of the power distribution network, wherein the load transfer characteristics at least comprise a load transfer utilization rate, a load grade, a load capacity and a load weight; and carrying out load transfer on the target non-fault section. According to the invention, the load transfer effect can be improved.

Description

technical field [0001] The invention relates to the technical field of distribution network, in particular to a distribution network load transfer method, device, equipment and storage medium. Background technique [0002] The distribution network refers to the power network that receives electric energy from the transmission network or regional power plants, and distributes it locally through power distribution facilities or distributes it to various users step by step according to voltage. When a fault occurs in a certain section of the distribution network, the feeder automation system of the distribution network can locate the faulty section and isolate the faulty section. After that, the load transfer system of the distribution network can formulate a load transfer plan for the non-faulty section, and perform load transfer for the non-faulty section to restore the power supply of the non-faulty section. [0003] However, the existing load transfer scheme has the proble...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J9/00H02J9/06G06Q50/06
CPCH02J3/007H02J3/0073H02J9/00H02J9/06H02J9/068G06Q50/06H02J2203/10H02J2203/20Y04S20/20Y02B70/30
Inventor 范辉曾四鸣马天祥徐岩鲁成
Owner STATE GRID HEBEI ELECTRIC POWER RES INST
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