电气传动2025，Vol.55Issue(6)：72-80,9.DOI:10.19457/j.1001-2095.dqcd25467
基于沙尘效应改进模型的新能源送端热稳定传输能力提升方法
Improvement Method for the Renewable Energy Sending-end Power System Thermal Stability Transfer Capacity Based on the Modified Dust Effect Model
摘要
Abstract
Under the large-scale renewable energy integrated with uncertain output characteristics,balancing the supply and demand within a local area becomes a new challenge.The long-distance transmission and consumption scheme is utilized for the sending-end grid to meet the requirements of renewable energy consumption.Within the constraints of thermal stability,dynamically improving the transmission lines'rating capacity has become a critical method for the sending-end power grid.However,due to the insufficient thermal stability calculation model,the existing improvement methods have the problems of significant evaluation deviation and narrow applicability in the practical application of the sending-end power system the improvement scheme usually needs to be customized and modified for specific line.In order to solve above issues,firstly,the influence of dust corona heating on the thermal stability transfer capacity at the sending end was analyzed,and an improved model of line thermal rating based on the dust effect was proposed.Furthermore,considering the uncertainty of the dust effect,a calculation method of dust effect control parameters based on fuzzy analysis was proposed,and the thermal rate capability calculation model was improved.Finally,combined with the meteorological forecast,a scheme for improving the thermal rating capacity of the renewable energy transmission power grid was constructed,which can be analyzed for multiple lines simultaneously.Via the practical engineering case of the Ningxia power grid and the power meteorological forecast data of China Electric Power Research Institute,the effectiveness and applicability of the improvement model of dust effect and the improvement scheme of multi-line thermal stability transmission capacity were verified.关键词
新能源送端电力系统/热稳定传输能力/沙尘效应/热平衡方程/提升方案Key words
renewable energy sending-end power system/thermal stability transfer capacity/dust effect/thermal balance equation/improvement method分类
动力与电气工程引用本文复制引用
李宏强,魏亚威,马晶,周雷,张汉花,鲁广明..基于沙尘效应改进模型的新能源送端热稳定传输能力提升方法[J].电气传动,2025,55(6):72-80,9.基金项目
国网宁夏电力有限公司科技项目(5229DK20005G) （5229DK20005G）
