电力工程技术2017，Vol.36Issue(1)：1-8,8.
大规模光伏发电并网概率潮流计算及对电网的影响
Probabilistic Load Flow Calculation and Influence Analysis for Power Grid Connected with Large Scale Photovoltaic Generation System
摘要
Abstract
With the increase of grid-connected photovoltaic generation capacity, the inherent characteristics of fluctuation and intermittence of the photovoltaic generation lead to the result that large-scale PV integration will change the distribution of power flow and even reverse it, influencing the stability and security of power grid. A steady-state model of PV generation system is established in the paper. Based on the IEEE 14-bus system and power grid of a province in Northwest China, probabilistic load flow calculation of power grid connected with photovoltaic generation system has been carried out. The influence of large scale grid-connected PV generation on load flow of power system is fully analyzed under the circumstances of different grid-connected capacity, different grid-connected spots and different output correlations of the PV generation system. The results indicate that the fluctuations and limit violation probabilities of power system voltage and load flow increase with the addition of PV capacity. What’s more, power loss as well as PV penetration level is influenced by grid-connected spots and the impact of PV on load flow is directional. Additionally, the correlations among PV power stations cannot be ignored. The research does provide reference for the planning and operation of power system with large integration of renewable energy.关键词
光伏并网/概率潮流/相关性Key words
grid-connected photovoltaic generation/probabilistic load flow/correlation分类
信息技术与安全科学引用本文复制引用
金楚,黎嘉明,徐沈智,劲宇..大规模光伏发电并网概率潮流计算及对电网的影响[J].电力工程技术,2017,36(1):1-8,8.基金项目
国家自然科学基金项目（5157070585）；国家重点研发计划智能电网技术与装备专项项目 （）
