Site selection and capacity determination method of distributed power generation in distribution network considering different power source forms

Abstract

The invention discloses a method for site selection and capacity determination of a distributed power supply in a distribution network. With the goal of minimizing the active power loss of the system, determine the optimal location and capacity of the distributed power supply. Four different forms of distributed power are fully considered, namely, only active power is emitted, only reactive power is emitted, both active power and reactive power are emitted, and active power is emitted but reactive power is absorbed. Regardless of the type of power supply, this method only needs to perform two power flow calculations, one for the initial basic power flow and the other for determining the location and capacity of the distributed power supply and then updating the power flow to obtain the final network loss. The results of different calculation examples show that the reasonable allocation of distributed power in the distribution network can effectively reduce active network loss and improve voltage quality, and the form of distributed power has an impact on its access location, capacity and system network loss. The present invention only considers the access of a single node to the distributed power supply, and does not consider the access of multiple nodes.

Description

technical field [0001] The invention relates to site selection and capacity determination of distributed power sources in a distribution network, which considers four different types of distributed power sources and belongs to the technical field of distribution network optimization. Background technique [0002] Compared with the transmission network, the active loss of electric energy in the transmission process accounts for a higher proportion in the distribution network. Therefore, reducing the active loss of the distribution network and saving electric energy is an important issue faced by many power practitioners. With the improvement of distributed generation technology, the research and application of distributed generation (distributed generation, DG) in the distribution network has emerged in the power grids of countries around the world. For a long time, capacitors have been widely used in distribution networks as power components that can reduce network losses an...

AI Technical Summary

Problems solved by technology

However, existing studies have shown that unreasonable configuration of the location and capacity of DG access in the distribution network may lead to an increase in system network loss.

Existing research has certain limitations on the form of DG, rarely consider DG that emits both active power and reactive power, and emits active power but absorbs reactive power

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