中国电机工程学报2025，Vol.45Issue(z1)：46-57,12.DOI:10.13334/j.0258-8013.pcsee.250193
基于低穿指令分阶段动态补偿的弱电网新能源电源快速低电压穿越控制
Dynamically Staged Commands Compensating based Fast LVRT Control for Inverter-interfaced Renewable Energy Sources Connecting to Weak Grids
摘要
Abstract
With the increasing proportion of inverter-interfaced renewable energy sources,many power grids in China exhibit weak characteristics.And there is a significant transient phase locking deviation(TPLD)in the low-voltage ride-through(LVRT),resulting in delayed response of active and reactive power for the inverter-interfaced renewable energy sources(IIRES).A dynamically commands compensating based fast LVRT control is proposed,including the novel idea of compensating route through LVRT control process.The mechanism of TPLD and segmented dynamic characteristics in weak grids are analyzed.And a high-order direct phase solver algorithm is introduced to quickly calculate the TPLD.Then the segmented dynamic compensation control is proposed.Compared with existing controls,the proposed method reduces the response time of LVRT to within 35 ms,increasing over 40%.And the fast fault recovery is achieved with no transient delay,improving the fault disturbance adaptability of the IIRES in weak grid scenarios.关键词
新能源电源/弱电网/低电压穿越/补偿控制Key words
inverter-interfaced renewable energy sources/weak grid/low-voltage ride-through/compensated control分类
动力与电气工程引用本文复制引用
贾科,张旸,毕天姝,田起硕,李再男,刘昊霖..基于低穿指令分阶段动态补偿的弱电网新能源电源快速低电压穿越控制[J].中国电机工程学报,2025,45(z1):46-57,12.基金项目
国家重点研发计划项目(2022YFB4202302).National Key R&D Program of China(2022YFB4202302). （2022YFB4202302）
