摘要
分段是影响中压架空线路可靠性水平的重要因素,如何确定中压架空线路的最优分段数是配电网规划的难点之一。不同于以往分析可靠性时通常假定用户均匀分布,进一步分析讨论了用户分布不均对中压架空单辐射线路可靠性水平和最优分段数的影响。首先建立了不同用户分布情况的数学模型,然后基于解析法推导出不同用户分布情况下的可靠性指标以及最优分段数的量化计算公式,并进一步综合考虑经济性和可靠性提出了考虑用户分布情况的最优分段数的表达式。仿真算例验证了理论推导的正确性。
Segmentation is an important factor affecting the reliability level of medium voltage overhead lines.How to determine the optimal number of segments of medium voltage overhead lines is one of the difficulties in distribution network planning.Different from the assumption that users are evenly distributed in the past reliability analysis,this paper further analyzes and discusses the influence of uneven distribution of users on the reliability level and optimal number of sections of medium voltage overhead single radial lines.Firstly,the mathematical model of different user distribution is established,and then the quantitative calculation formula of reliability index and optimal number of segments under different user distribution is derived based on analytical method.Furthermore,the expression of optimal number of segments considering user distribution is proposed considering economy and reliability.The simulation example verifies the correctness of the theoretical derivation.
作者
曹华珍
李浩
吴亚雄
高崇
王梓珺
王承民
CAO Hua-zhen;LI Hao;WU Ya-xiong;GAO Chong;WANG Zi-jun;WANG Cheng-min(Power Grid Planning Center of Guangdong Power Grid Company,Guangzhou 510080,China;School of Electronic Information and Electrical Engineering, Shanghai Jiaotong University, Shanghai 200240, China)
出处
《哈尔滨理工大学学报》
CAS
北大核心
2022年第2期114-121,共8页
Journal of Harbin University of Science and Technology
基金
国家重点研发计划(2018YFB1503000).
关键词
用户分布
供电可靠性
架空单辐射
最优分段数
user distribution
reliability of power supply
overhead single radial line
optimal number of segments
