摘要
高比例新能源的接入使得配电网潮流具有波动性和不确定性,系统不确定性潮流将影响配电网极限线损准确计算。针对含高比例新能源的配电网,分析新能源出力及负荷的概率模型。结合对称采样无迹变换算法,建立计及新能源出力和负荷随机性的配电网极限线损模型。对基于随机变量相关性采样获得的样本点线损计算,经加权处理后得到配电网线损的概率特征。最后,以IEEE 69节点系统和某县配电网为例,选用蒙特卡洛模拟方法做对比,验证了该模型的可行性。
The high proportion of renewable energy makes the power flow of distribution network fluctuate and uncertain,thus affecting the accurate calculation of limit line loss in the distribution network.For the distribution network with a high proportion of renewable energy,the probability model of renewable energy output and load is analyzed.Combined with the symmetric sampling traceless transformation algorithm,the limit line loss model of the distribution network is established by considering the randomness of the renewable energy output and load.After the weighted processing of line loss calculation of sample points obtained based on the correlation sampling of random variables,the probability characteristics of the distribution network line loss are obtained.Finally,taking IEEE 69-bus system and a county distribution network as an example,the feasibility of the model is verified with the Monte Carlo simulation method.
作者
梁琛
王维洲
马喜平
郑伟
李亚昕
张建雄
LIANG Chen;WANG Weizhou;MA Xiping;ZHENG Wei;LI Yaxin;ZHANG Jianxiong(State Grid Gansu Electric Power Research Institute,Lanzhou 730070,China;State Grid Gansu Electric Power Company,Lanzhou 730050,China;School of Automation&Electrical Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China)
出处
《智慧电力》
北大核心
2022年第12期34-40,78,共8页
Smart Power
基金
国家自然科学基金资助项目(62063015)
国网甘肃省电力公司科技项目(SGGSKY00PWJS2200072)。
关键词
配电网
高比例新能源
无迹变换
极限线损
distribution network
high proportion new energy
trace-less transformation
limit line loss
作者简介
梁琛(1985),男,甘肃庆阳人,高级工程师,主要研究方向为智能电网、新能源和微电网技术。
