基于仿真的云条件下光伏电站短期功率变化评估方法

IF 5.7 1区 工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC
Eric Bernard Dilger;Ricardo Vasques de Oliveira
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引用次数: 0

摘要

光伏电站(PVPP)的输出功率变化是电力系统运行和控制面临的主要挑战之一。主要由云层移动引起的短期功率变化会影响电压幅值和频率,从而降低电能质量和电力系统的可靠性。全面分析这些功率变化对于制定新型控制方法和协助电力系统运营商运行和控制电力系统至关重要。因此,本文提出了一种基于仿真的方法来评估光伏电站中由云层引起的短期功率变化。本文的另一个贡献是全面评估了在云条件下运行的光伏电站的短期功率变化。所进行的分析评估了多种天气条件参数对功率变化幅度和斜率的单独影响。基于模拟的方法使用三维分形曲面合成了太阳辐照度时间序列。所提出的评估方法表明,PVPP 标称功率、时间尺度、云层覆盖水平、风速、一天中的时段和阴影强度水平对功率变化的特征有显著影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Simulation-Based Approach to Assessing Short-Term Power Variations of PV Power Plants Under Cloud Conditions
The output power variability of photovoltaic (PV) power plants (PVPPs) is one of the major challenges for the operation and control of power systems. The short-term power variations, mainly caused by cloud movements, affect voltage magnitude and frequency, which may degrade power quality and power system reliability. Comprehensive analyses of these power variations are crucial to formulate novel control approaches and assist power system operators in the operation and control of power systems. Thus, this paper proposes a simulation-based approach to assessing short-term power variations caused by clouds in PV power plants. A comprehensive assessment of the short-term power variations in a PV power plant operating under cloud conditions is another contribution of this paper. The performed analysis evaluates the individual impact of multiple weather condition parameters on the magnitude and ramp rate of the power variations. The simulation-based approach synthesizes the solar irradiance time series using three-dimensional fractal surfaces. The proposed assessment approach has shown that the PVPP nominal power, timescale, cloud coverage level, wind speed, period of the day, and shadow intensity level significantly affect the characteristics of the power variations.
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来源期刊
Journal of Modern Power Systems and Clean Energy
Journal of Modern Power Systems and Clean Energy ENGINEERING, ELECTRICAL & ELECTRONIC-
CiteScore
12.30
自引率
14.30%
发文量
97
审稿时长
13 weeks
期刊介绍: Journal of Modern Power Systems and Clean Energy (MPCE), commencing from June, 2013, is a newly established, peer-reviewed and quarterly published journal in English. It is the first international power engineering journal originated in mainland China. MPCE publishes original papers, short letters and review articles in the field of modern power systems with focus on smart grid technology and renewable energy integration, etc.
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