Distributed power supply planning method based on improved DC power flow algorithm

Abstract

The invention discloses a distributed power supply planning method based on an improved DC power flow algorithm. The method comprises the following steps: 1) importing data and inputting an initial value; 2) introducing the improved DC power flow algorithm considering voltage and reactive power to realize decoupling of voltage amplitude and phase angle in a branch power flow equation; 3) proposinga distributed power supply planning method considering coordinated optimization of an energy storage system and active management measures based on the algorithm; 4) adopting an iterative solution flow based on hot start for ensuring the precision of the planning method; 5) taking the net income of a distributed power supply operator as a target through combination with a specific power distribution network structure, and carrying out optimal configuration on the position and capacity of the distributed power supply. Through the distributed power supply planning method based on the improved direct current power flow algorithm, the net benefits of a distributed power supply operator can be increased, the consumption of the distributed power supply can be promoted, and the system network loss can be reduced.

Description

technical field [0001] The invention relates to the field of distribution network planning, in particular to a distributed power supply planning method based on an improved DC power flow algorithm. Background technique [0002] Distributed power generation planning refers to determining the installation location and configuration capacity of DG on the basis of known load forecast results and distribution network operating conditions, so as to optimize the economy and reliability of the distribution network during the entire planning period. [0003] Today, a single power supply system characterized by large units, large power grids, and high voltage can no longer meet the increasing requirements for power quality, safety and reliability. It has increasingly become a research hotspot at home and abroad. However, the rapid development of distributed power has also brought a series of problems to the power system, such as the unreasonable installation location will reduce the ...

AI Technical Summary

Problems solved by technology

However, the rapid development of distributed power has also brought a series of problems to the power system, such as the unreasonable installation location will reduce the reliability of the system; the large access capacity will cause "abandoning light and wind", overvoltage and other phenomena, If it is too small, it will not be able to fully play its positive role in improving voltage quality and reducing network loss.

Images