Power distribution network planning and operation method considering distributed resource operation characteristics

Abstract

The invention discloses a power distribution network planning and operation method considering distributed resource operation characteristics, which comprises the following steps: classifying loads according to user types, analyzing historical data by adopting a clustering method to obtain typical load curves of various types of loads, and obtaining a reference operation curve of loads of the same type as newly-added users; further obtaining a normal operation curve of the newly added user load; in the planning or newly-added user load access stage, clustering analysis is carried out on historical data of a newly-added user load to-be-accessed feeder line and a tie line thereof in a normal operation mode, and a typical operation curve of the to-be-accessed feeder line is obtained; and calculating the quotient of the peak-valley difference and the average load after the newly-added user load is accessed to the feeder line as the load flatness of the to-be-accessed feeder line, and taking the feeder line with the minimum load flatness as the access feeder line. According to the method, the difference and translation capability of the power utilization curves of different types of users are fully utilized, the line transmission capability is improved, and the operation condition of the power grid is optimized.

Description

technical field [0001] The invention relates to the technical field of energy management, in particular to a distribution network planning and operation method considering the operation characteristics of distributed resources. Background technique [0002] Under normal circumstances, in order to ensure the safety and reliability of the distribution network, it is necessary to limit the maximum current of the distribution network line within the allowable range. When the line is overloaded or facing the risk of overloading, it is usually necessary to transfer some branch lines of the feeder to other lines as a whole. If other lines cannot meet the demand, it is necessary to restrict the production of some users. In terms of line planning, in order to ensure that the line is not overloaded, it is generally connected according to the maximum load of the line under normal operation mode does not exceed the allowable value of the line, and when calculating the maximum load that ...

AI Technical Summary

Problems solved by technology

When the line is overloaded or facing the risk of overloading, it is usually necessary to transfer some branch lines of the feeder to other lines as a whole. If other lines cannot meet the demand, it is necessary to restrict the production of some users

In terms of line planning, in order to ensure that the line is not overloaded, it is generally connected according to the maximum load of the line under normal operation mode does not exceed the allowable value of the line, and when calculating the maximum load that the line may operate, the maximum value of all loads is generally multiplied by the simultaneous coefficient The method is determined, which makes it difficult for some users to expand the capacity or make it difficult to fully utilize the transmission capacity of the line

[0003] Due to different processes, the power consumption curves of different types of users are different, and they all have a certain translation ability. It is difficult to make full use of the transmission capacity of the line when planning and constructing the line only with the peak current that occurs in certain periods of time as a constraint.

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