Real-time simulation modeling method for distributed photovoltaic power generation cluster with high penetration rate

Abstract

The invention provides a high-permeability distributed photovoltaic power generation cluster real-time simulation modeling method. According to the method, a model comprising a source side sub system,a grid side sub system, a load sub system and an energy storage sub system is established on an RT-LAB real-time simulation platform to perform simulation; the method comprises the steps of establishing an FPGA small step simulation-based inverter detailed model in the RT-LAB simulation platform t; adopting a controlled voltage source model to replace an IGBT voltage source type converter to establish an inverter equivalent simplified model; and establishing a synchronous generator set model capable of reflecting power grid frequency characteristic, a ZIP load model capable of reflecting comprehensive load characteristic, and an energy storage battery model capable of reflecting system stability. By virtue of the method, coordination among power grid frequency fluctuations, and source, grid, load and energy storage sub systems are taken into consideration, simulation accuracy is ensured in a condition of large simulation scale, and model complexity and simulation calculation time arelowered and shortened.

Description

technical field [0001] The invention relates to a real-time simulation modeling method for a high-permeability distributed photovoltaic power generation cluster, and belongs to the technical field of distributed energy grid-connected modeling and simulation. Background technique [0002] As a typical distributed power source, photovoltaic power generation has become an important way for human beings to use renewable energy to generate electricity. Therefore, it is of great significance to study the simulation modeling of photovoltaic system power generation process. However, the stability of power system frequency has high requirements for renewable energy power generation. Solar power generation has the characteristics of intermittent, fluctuating and unschedulable. Therefore, large-scale distributed photovoltaic power generation The problem of weak capacity. At the same time, the gradual increase in the penetration rate of the power grid has led to the introduction of a ...

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to solve the problem of large-scale and high-complexity simulation of distributed photovoltaic power generation clusters with high penetration rate

Images