An approach for assessing high-penetration PV impact on distribution feeders
An approach for assessing high-penetration PV impact on distribution feeders
复制标题
评估高渗透光伏对配电馈线影响的方法
DOI：
10.1016/j.epsr.2015.12.026
复制
发表时间：
2016
影响因子：
3.9
通讯作者：
W. Grady
中科院分区：
文献类型：
--
作者：
M. Ebad;W. Grady
由于具有高穿透水平的云阴影导致的太阳能功率的可变性可能导致配电馈线中的功率波动和电压闪烁等技术问题。为了帮助配电规划人员更好地理解和预测这些可能对电压质量的影响，并避免对馈线上安装的PV数量做出过于保守的决定，需要一种全面的仿真方法来建模和解决这些问题。为此，本文提出了一种模拟和分析方法，使用云阴影模型，重新创建分布式和大型集中式PV在馈线上的不同位置的可变输出功率。仿真是在实际的EPRI试验馈线上进行的。EPRI的OpenDSS配电仿真程序是通过MATLAB驱动的。在所有母线上监控馈线，测量PV感应电压质量问题，包括电压控制设备的动态反应。示例馈线说明了新的评估方法的实用性，以解决和量化大量的光伏系统对馈线稳态过电压，电压波动水平和闪变，电压调节设备的操作的影响。分布式PV的结果表明，高达50%的PV水平是可以容忍的。
The variability of solar power due to cloud shadows with high penetration levels can cause technical issues such as power fluctuation and voltage flicker in power distribution feeders. To help distribution planners better understand and predict these likely impacts on voltage quality and avoid overly conservative decisions on the amount of PV installed on a feeder, a comprehensive simulation method is needed to model and address these problems. To this end, this paper presents a simulation and analysis approach that uses a cloud shadow model to recreate the variable output power of both distributed and large centralized PVs at various locations on a feeder. Simulations are made on an actual EPRI test feeder. EPRI's OpenDSS distribution simulation program is driven through MATLAB. The feeder is monitored at all buses, and PV induced voltage quality issues are measured, including the dynamic reaction of voltage control devices. The example feeder illustrates the usefulness of the new evaluation method to address and quantify impacts of large amounts of PV systems on feeder steady-state over voltage, voltage fluctuation level and flicker, and voltage regulation device operation. Results for distributed PV show that PV levels as high as 50% can be tolerated.