Power network reconfiguration method for optimizing distributed energy access point and access proportion

Abstract

The invention relates to the field of distributed energy resource access, and specifically a power network reconfiguration method for optimizing a distributed energy access point and an access proportion. The method comprises the following steps: adopting an adaptive weight particle swarm optimization algorithm, a Newton-Raphson method and a power distribution network reconfiguration method to perform an optimal reconfiguration on the power network in the presence of distributed energy resources, analyzing two or more access point optimal selection method, access active capacity calculation method and calculation method of system power flow before and after access when the distributed energy resources (wind power, photovoltaic energy) are accessed to a system; and adjusting the wind power and photovoltaic distributed energy resource access points and access proportions, analyzing the impact of different access proportions on the system economy and giving a system optimization measure. The method is applied to an IEEE-14 node model and an IEEE-30 node model, the reconfiguration result is analyzed, and optimum access points and access proportions of two distributed energy resources can be obtained; after a reconfiguration network is optimized, the network loss is the minimum and the reactive power output is reasonable, the economy of the system is improved and the voltage level satisfies the requirement of stable operation.

Description

technical field [0001] The invention relates to the field of distributed energy access, in particular to a power network reconfiguration method for optimizing distributed energy access points and access ratios. Background technique [0002] The traditional thermal power generation mode of the power system mainly relies on primary energy, namely coal, oil, natural gas, etc., but this kind of primary energy power generation is increasingly polluting the environment, and the reserves of primary energy are also declining rapidly. Distributed energy based on clean energy Energy generation methods are becoming more and more mature, and power network reconstruction will become an inevitable trend. Distributed energy is generally a small and medium-sized power generation device installed on the user side, with a capacity ranging from a few megawatts to tens of megawatts. It can be operated in isolation and only provide power to users; it can also be connected to the power network to...

AI Technical Summary

Problems solved by technology

In recent years, a variety of distributed power sources have to be integrated into the grid at the same time. The existing technology is not suitable for the scenario where several distributed power sources are connected to the grid at the same time, and the access position, access ratio, and optimization of reactive power output of distributed power sources are also considered. issues such as network reconstruction with minimum network loss, etc.

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