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A method, device, equipment and storage medium for load transfer of distribution network

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

Active Publication Date: 2022-07-22
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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  • A method, device, equipment and storage medium for load transfer of distribution network
  • A method, device, equipment and storage medium for load transfer of distribution network
  • A method, device, equipment and storage medium for load transfer of distribution network

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0093] When the load transfer feature is the load transfer utilization rate, the rated load capacity of the non-faulty 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. The non-faulty section combination of the load transfer utilization rate, where the load transfer utilization rate is the ratio of all weights to the total weight in the non-faulty section combination;

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

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

[0096] Suppose there are N kinds of items to be selected, each item has only one and indivisible, the value of item j is v(j), the weight is w(j), there is only one backpack and the total weight of the items that can be accommodated is c . Then the mathematical model formula ...

no. 2 example

[0105] In the case that the load transfer feature is the load level, sort the multiple non-faulty sections in the order of load level from high to bottom and the distance between the non-faulty section and the target backup power source 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, then the first N non-faulty segments are determined as target non-faulty segments.

[0108] For the loss of power load P downstream of all fault points i , according to the load importance, the priority is to restore the first-level load, and then consider the other. The purpose is to restore...

no. 3 example

[0114] When the load transfer characteristic is the load amount, sort the multiple non-faulty sections according to the order of the load amount from large to small and the distance from the target backup power source 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, then the first M non-faulty segments are determined as target non-faulty segments.

[0117] For the loss of power load P downstream of all fault points i , the sorting is based on the load size, regardless of the load importance, the purpose is to reduce the line loss and improve the power supply efficiency.

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Abstract

The present invention is applicable to the technical field of distribution network, and provides a load transfer method, device, equipment and storage medium for distribution network, wherein the load transfer method includes: when a target section of the distribution network fails, according to the Jestra algorithm and segment network topology information of the distribution network to determine multiple non-faulty segments in the distribution network corresponding to the target segment, and the target backup power source for load transfer to the non-faulty segment ; In the case that the available load capacity of the target backup power supply is less than the total load capacity of the rated load capacity of all non-faulty sections, according to the preset load transfer algorithm corresponding to the load transfer characteristics of the distribution network, in multiple In the non-faulty section, determine the target non-faulty section to be transferred to the load; wherein, the load transfer characteristics include at least load transfer utilization rate, load level, load amount and load weight; load transfer is performed on the target non-faulty section . By adopting the present invention, the effect of load transfer can be improved.

Description

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

Claims

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Application Information

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Patent Type & Authority Patents(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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