摘要
针对目前概率潮流计算中未能全面考虑光伏电源输出功率相关性的不足,从电力系统中的随机特性出发,考虑系统中相邻地区间光伏出力非线性相关性,提出一种光伏并网系统的概率潮流计算方法.该方法采用加权高斯混合分布构建光伏出力的数学模型,在此基础上结合拉丁超立方采样算法来提高采样效率,降低潮流计算复杂度.在含有光伏接入的IEEE 14节点系统中进行仿真计算分析,验证所提研究方法相比于传统研究方法的准确性和有效性.
In view of the insufficiency that the output power correlation of photovoltaic power supply is not fully considered in the curent probabilistic power flow calqulation,a probabilis-tic power flow calculation method for photovoltaic grid-connect-ed system is proposed based on the stochastic characteristics of the power system and the non-linear correlation of photovoltaic output betwen adjacent areas in the system.This method uses weighted Gauss mixture distribution to construct the mathemati-cal model of photovoltaic output,and on this basis,uses Latin hypercube sampling algrihm to improve sampling fficiency and reduce the complexity of power flow calculation.The accura-cy and validity of the proposed method(compared to the tradi-tional method)are verifed by simulation analysis in the IEEE 14-bus system with photovoltaic acess.
作者
李韵喻
梁有珍
甄文喜
张光儒
马喜平
LI Yunyu;LIANG Youzhen;ZHEN Wenxi;ZHANG Guangru;MA Xiping(State Grid Gansu E1ectric Power Company,Lanzhou 730046,Gansu,China;State Grid Gansu Electric Power Research Institute,Lanzhou 730050,Gansu,China;Distributed Power and Microgid Engineering Research Center,Lanzhou 730050,Gansu,China)
出处
《电网与清洁能源》
2019年第6期69-75,共7页
Power System and Clean Energy
基金
国网甘肃省电力公司科技项目(52272216002Z)~~
关键词
光伏
概率潮流
加权高斯混合分布
非线性相关性
photovoltaic
probabilistic flow
weighted Gauss-ian mixture distribution
nonlinear correlation
作者简介
李韵喻(1975一),男,硕士,高级程师,研究方向为智能电网技术;梁有珍(1989-),女,硕士,工程师,研究方向为电网安全稳定运行;甄文喜(1985一),男,硕士,高级工程师,研究方向为电力系统新能源;赵耀(1974一),男,硕士,高级工程师,主要从事电网的运行与故障检测;张光儒(1989-),男,硕士,工程师,研究方向为电网安全稳定运行;马喜平(1987一),男,硕士,高级工程师,研究方向为电力系统新能源。
