摘要
充分利用电气化铁路沿线太阳能禀赋,不仅可以为电气化铁路牵引供电提供清洁能源,也可以促进光伏发电的就近消纳。文中提出一种面向电气化铁路接入的光伏发电分相电流控制策略。该分相电流控制策略实施于三相静止坐标系,通过对分相电流的调节实现对光伏发电的并网控制;同时,考虑变流器容量约束,在保证光伏功率全额输出的前提下,充分利用变流器裕量输出负序电流供给单相牵引负荷,降低电气化铁路并网接入点的电流不平衡度,可在无需相序分离的条件下实现光伏发电的并网发电与负序补偿的统一控制。最后,基于RTLAB实验平台验证了所提控制策略的有效性。
Making full use of the abundant solar resources along the electrified railways can not only provide clean energy for the traction power supply of the electrified railway,but also promote the nearby consumption of photovoltaic power generation.This paper proposes an individual phase current control strategy for the photovoltaic power integrated into the electrified railway.Applied in a three-phase static coordinate system,the individual phase current control strategy can realize the grid-connection control of photovoltaic power generation by adjusting the individual phase current.While taking capacity constraints of the converter into account and ensuring the full output of photovoltaic power,this strategy makes full use of the converter margin to output negative sequence current for the single-phase traction load,which can reduce the current imbalance of the grid-connected access point of the electrified railways and realize the unified control of grid-connected power generation and negative sequence compensation without phase sequence separation.Finally,the effectiveness of the proposed control strategy is verified based on the RTLAB platform.
作者
程鹏
刘文泉
陈冲
贾利民
CHENG Peng;LIU Wenquan;CHEN Chong;JIA Liming(Energy and Power Innovation Research Institute,North China Electric Power University,Beijing 102206,China;State Key Laboratory of Rail Traffic Control and Safety(Beijing Jiaotong University),Beijing 100091,China)
出处
《电力系统自动化》
EI
CSCD
北大核心
2022年第19期145-153,共9页
Automation of Electric Power Systems
基金
国家重点研发计划资助项目(2021YFB2601602)。
关键词
光伏发电
电气化铁路
分相电流
电流限幅
牵引供电
负序电流补偿
photovoltaic power generation
electrified railway
individual phase current
current limitation
traction power supply
negative-sequence current compensation
