Optimization for Power Distribution and Maintenance Schedules of Paralleled Transmission Channels in AC/DC Power System  

作　　者：Jie Liu Shunjiang Lin Weikun Liang Yanghua Liu Mingbo Liu 

机构地区：[1]School of Electric Power Engineering,South China University of Technology,Guangzhou,China [2]School of Electromechanical Engineering,Guangdong Polytechnic Normal University,Guangzhou,China

出　　处：《Journal of Modern Power Systems and Clean Energy》2024年第6期2030-2044,共15页现代电力系统与清洁能源学报(英文)

基　　金：This work was supported by the National Natural Science Foundation of China(No.51977080);the Natural Science Foundation of Guangdong Province(No.2022A1515010332).

摘　　要：As transmission power among interconnected re-gional grids is increasing rapidly,formulating the power distri-bution and maintenance schedules of multiple paralleled trans-mission channels is critical to ensure the secure and economic operation in an AC/DC power system.A coordinated optimiza-tion for power distribution and maintenance schedules(COPD-MS)of multiple paralleled transmission channels is proposed,and the active power losses of the resistances of earth line in the high-voltage direct current(HVDC)transmission lines are taken into account when one pole is under maintenance while the other pole is operating under monopolar ground circuit.To solve the proposed COPD-MS model efficiently,the generalized Benders decomposition(GBD)algorithm is used to decompose the proposed COPD-MS model into master problem of mainte-nance scheduling and sub-problems of power distribution sched-uling,and the optimal solution to the original model is obtained by the alternative iteration between them.Moreover,a recur-sive acceleration(RA)algorithm is proposed to solve the master problem,which can directly obtain its solution in the new itera-tion by using the solution in the last iteration and the newly added Benders cut.Convex relaxation techniques are applied to the nonlinear constraints in the sub-problem to ensure the reli-able convergence.Additionally,since there is no coupling among the power distributions during each time interval in the sub-problem,parallel computing technology is used to improve the computational efficiency.Finally,case studies on the modi-fied IEEE 39-bus system and an actual 1524-bus large-scale AC/DC hybrid power system demonstrate the effectiveness of the proposed COPD-MS model.

关 键 词：AC/DC power system power distribution schedule transmission maintenance schedule generalized Bend-ers decomposition(GBD) recursive acceleration(RA) 

分 类 号：TM721.3[电气工程—电力系统及自动化]