Modeling method of low-voltage distribution network with distributed power supply

Abstract

The invention relates to a modeling method of a low-voltage distribution network with a distributed power supply. The modeling method includes the steps that a distributed power supply model in a low-voltage distribution network model is established; a distribution transformer combination model in the low-voltage distribution network model is established; a low-voltage transformer substation model is established in the low-voltage distribution network model; topology association and measurement data points between the low-voltage distribution network model and a medium-voltage distribution network model are set; low-voltage distribution network measurement data are acquired and mapped into the established low-voltage distribution network model; the low-voltage distribution network model is checked through topology verification. Thus, while the influence on the functions of an existing power distribution automation system is minimum, the low-voltage power grid model with the distributed power supply is introduced, so that modeling of the low-voltage distribution network meets the actual situation better, and power distribution equipment is more convenient to manage and maintain. The calculated amount is reduced in the processing process, and system resources are saved.

Description

technical field [0001] The invention belongs to the technical field of electric power engineering and relates to a modeling method suitable for a low-voltage distribution network including distributed power sources. Background technique [0002] With the development of intelligent distribution network, under the encouragement of the state's new energy development policy, the access of distributed power supply will increase day by day. The necessity of monitoring and analysis is increasing day by day. To this end, it is necessary to establish a low-voltage distribution network model with distributed power sources suitable for distribution automation systems. [0003] The distribution automation system generally only considers the modeling of the medium and high voltage distribution network equipment, and refers to the common information model (CIM) in the IEC61970 standard, which is relatively mature; the introduction of the model of the low voltage distribution network shoul...

AI Technical Summary

Problems solved by technology

Therefore, the distributed power unit cannot be simply regarded as a power generation unit model, and it is necessary to consider the support for bidirectional energy flow and flexible attribute expansion

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