电力系统自动化2025，Vol.49Issue(19)：62-74,13.DOI:10.7500/AEPS20241222005
含嵌入式直流输电线路的电力系统连续时间日前调度方法
Continuous-time Day-ahead Scheduling Method of Power System with Embedded DC Transmission Lines
摘要
Abstract
The embedded direct current(DC)transmission technology has significantly enhanced the transmission capacity and power flow controllability of power systems.Against the backdrop of the gradually increasing proportion of wind power,this technology contributes to improving the scheduling economy and reliability.A continuous-time day-ahead scheduling method of the power system with embedded DC transmission lines is proposed to fully exploit the regulation potential of embedded DC transmission lines.First,based on the continuous-time modeling approach,a scheduling model is developed to capture the dynamic characteristics of transmission lines within the scheduling horizon.Subsequently,a customized reformulation method is designed to address the inherent non-convexity and non-linearity issues of the model.By employing the techniques such as variable substitution,model convexification,and Bernstein polynomial transformations,the infinite-dimensional nonlinear model is reformulated into a finite-dimensional mixed-integer second-order cone programming(MISOCP)model,realizing the highly efficient solution of the model.The calculation results of case studies demonstrate that the proposed method can more efficiently utilize the transmission capabilities of embedded DC transmission lines,optimizes the scheduling plan of thermal units,thereby reducing the scheduling costs significantly while enhancing the reliability compared with existing methods.关键词
直流输电/连续时间建模/混合整数二阶锥规划/随机优化/日前调度Key words
direct current(DC)transmission/continuous-time modeling/mixed-integer second-order cone programming(MISOCP)/stochastic optimization/day-ahead scheduling引用本文复制引用
刘晶冠,艾小猛,李海峰,王之伟,徐贤,李文博..含嵌入式直流输电线路的电力系统连续时间日前调度方法[J].电力系统自动化,2025,49(19):62-74,13.基金项目
国家电网公司总部科技项目:"含多嵌入式直流的受端电网协同运行控制关键技术研究"(5100-202418029A-1-1-ZN). This work is supported by State Grid Corporation of China(No.5100-202418029A-1-1-ZN). （5100-202418029A-1-1-ZN）
