PV Inverter Experimental Dataset Version 2 with 100 Percent Power

The increase in power electronic based generation sources require accurate modeling of inverters. Accurate modeling requires experimental data over wider operation range. We used 20 kW off-the-shelf grid following PV inverter in the experiments. We used controllable AC supply and controllable DC supply to emulate AC and DC side characteristics. The experiments were performed at NREL's Energy Systems Integration Facility. The PV inverter is tested under 100%, 75%, 50%, 25% load conditions. In the first dataset, for each operating condition, controllable AC source voltage is varied from 0.88 to 1.09 per unit (p.u) with a step value of 0.025 p.u while keeping the frequency at 60 Hz. In the second dataset, under similar load conditions (100%, 75%, 50%, 25% ), the frequency of the controllable AC source voltage was varied from 59.4 Hz to 60.45 Hz with a step value of 0.2 Hz. Voltage and frequency range is chosen based on inverter protection. Voltages and currents on DC and AC side are included in the dataset.随着基于电力电子技术的发电电源占比持续攀升，对逆变器开展精准建模的需求日益迫切。而精准的逆变器建模，需要覆盖更宽运行工况范围的实验数据作为支撑。本实验采用一台额定功率为20 kW的商用现货（off-the-shelf）并网型光伏逆变器（grid following PV inverter），使用可控交流电源与可控直流电源分别模拟逆变器交、直流侧的运行特性。实验于美国国家可再生能源实验室（NREL）的能源系统集成设施（Energy Systems Integration Facility）中开展。本次测试针对该光伏逆变器设置了100%、75%、50%、25%四种额定负载工况。在第一组数据集中，针对每一种负载工况，我们将可控交流电源的电压以0.025标幺值（per unit, p.u）为步长，在0.88至1.09标幺值的区间内调节，同时将电源频率固定为60 Hz。在第二组数据集中，我们采用与前述一致的四种负载工况，将可控交流电源的输出频率以0.2 Hz为步长，在59.4 Hz至60.45 Hz的区间内调节。本次选取的电压与频率调节范围均依据逆变器的保护限值确定。本数据集涵盖了逆变器交、直流侧的电压与电流数据。

搜集汇总

背景与挑战

背景概述

该数据集为光伏逆变器实验数据集，包含20 kW光伏逆变器在100%、75%、50%、25%负载下，电压和频率步进变化的测试数据，用于逆变器建模和人工智能训练。数据由美国国家可再生能源实验室在能源系统集成设施中生成，涵盖DC和AC侧的电压和电流测量。