基于ETAP的光伏离网发电系统的稳态分析

Stability Analysis of Photovoltaic Off-grid Power Generation System based on ETAP

本文针对某建筑中的某一离网光伏发电系统,采用ETAP电力系统仿真软件对其稳定性进行仿真分析。建立该系统的单线图模型,研究光伏电源容量的变化对电力系统稳态性能的影响,通过不同光伏渗透率下系统的潮流分析,获取稳态时系统的电压电流与功率分布和短路时的暂态电流,进而实现对该离网光伏发电系统的稳定性分析。相较于传统Matlab仿真更加的简洁,对系统级别的数值模拟更加贴合实际,仿真结果可验证本文所提方法的正确性和有效性。

This article focuses on the simulation analysis of the stability of an off-grid photovoltaic power generation system in a building using ETAP power system simulation software.Establish a single-line diagram model of the system to study the impact of changes in photovoltaic power capacity on the steady-state performance of the power system.Through the power flow analysis of the system under different photovoltaic penetration rates,obtain the voltage and current distribution of the system during steady-state operation and the transient current during short-circuit conditions,thereby achieving stability analysis of the off-grid photovoltaic power generation system.Compared to traditional Matlab simulations,this method is more concise and more realistic for numerical simulation at the system level.The simulation results verify the correctness and effectiveness of the proposed method in this paper.