现代电力2026，Vol.43Issue(2)：276-286,11.DOI:10.19725/j.cnki.1007-2322.2024.0001
考虑动态热定值的分布式光伏接纳能力评估方法
A Distributed PV Hosting Capacity Assessment Method Considering Dynamic Thermal Rating
摘要
Abstract
The PV hosting capacity(PVHC)of distribution networks is constrained by the line carrying capacity.However,the traditional assumption that the carrying capacity of overhead lines is static may lead to an inaccurate assessment of PVHC of distribution networks.In the light of this,a PVHC assessment model for distribution networks is proposed,taking into account the dynamic thermal rating(DTR).Firstly,a voltage sensitivity matrix is introduced to quantify the impact of PV access on the voltage distribution of distribution networks,and a distributed PV site-selecting method is proposed based on the traversal idea.Subsequently,in consideration of the influence of meteorological factors on the carrying capacity of overhead lines,a PVHC assessment model for distribution networks taking DTR into account is established through meteorological data-driven statistical analysis.Given the non-convexity of the constructed model,the second-order cone relaxation technique is adopted to transform it into an easy-to-solve mixed-integer second-order cone programming problem.Finally,the proposed model is simulated on the IEEE 33-bus system using actual data.The results indicate that the proposed method can effectively improve the PVHC of distribution networks.Additionally,it also avoids the overload risk of the line currents exceeding the actual line carrying capacity,which occurs as the DTR becomes lower than the STR under harsh meteorological conditions.In summary,the proposed method holds significant application and engineering value.关键词
配电网/光伏接纳能力/气象因素/动态热定值/时间尺度/混合整数二阶锥规划Key words
distribution networks/PV hosting capacity/meteorological factors/dynamic thermal rating/time scales/mixed-integer second-order cone programming分类
信息技术与安全科学引用本文复制引用
陈蕾,干梦双,苗信辉,郑隽杰,徐重酉,叶林..考虑动态热定值的分布式光伏接纳能力评估方法[J].现代电力,2026,43(2):276-286,11.基金项目
国网浙江省电力有限公司科技项目(基于电网一张图的新型配电系统分布式光伏高效消纳关键技术研究与应用(B311NB230003)).Project Supported by Science and Technology Project of State Grid Zhejiang Electric Power Co.,Ltd(Research and Application of Key Technologies of Efficient Consumption of Distributed Photovoltaic in New Distribution System Based on Grid Diagram(B311NB230003)). （基于电网一张图的新型配电系统分布式光伏高效消纳关键技术研究与应用(B311NB230003）
