摘要
为了解决城轨列车频繁牵引、制动造成的网压波动和能量浪费问题,针对应用于城市轨道交通的飞轮储能系统,提出一种基于牵引网直流侧电压的充放电控制策略,采用均速控制方法调节飞轮阵列因工艺与环境不同造成的转速差异,并在现有控制策略的基础上提出空载网压辨识算法,确保飞轮在中压环网电压波动时仍能正确动作。最后以北京地铁房山线为例,对含飞轮储能系统的牵引供电系统进行建模和仿真分析,并在牵引变电所接入飞轮储能装置进行现场实验。研究结果表明:接入飞轮后,牵引网压峰谷差值降低了33.2%,牵引变电所输出能量减少了23%,验证了控制策略的可行性和飞轮储能系统的稳压节能效果,为飞轮储能系统在城市轨道交通领域的进一步应用提供参考和借鉴。
In order to address the issue of network voltage fluctuations and energy wastage caused by the frequent traction and braking of urban trains,a charging and discharging control strategy based on the DC side voltage of the traction network is proposed for the flywheel energy storage system applied in urban rail transit.The average speed control method is used to adjust the speed difference of the flywheel array due to different processes and environments.On the basis of the existing control strategy,a no-load voltage identification algorithm is proposed to prevent flywheel malfunctions due to voltage fluctuations in AC medium-voltage power network.Finally,taking the Fangshan Line of Beijing Metro as an example,modeling and simulation analysis were conducted on the traction power supply system with flywheel energy storage system,and on-site experiments were also carried out.The research results show that after applying the flywheel,the difference value between the peak and valley voltage of the traction network decreased by 33.2%,the output energy of the traction substation has been reduced by 23%,verifies the feasibility of the control strategy and the energy-saving effect of the flywheel energy storage system,providing reference for the further application of the flywheel energy storage system in the field of urban rail transit.
作者
赵小皓
张钢
宋嘉桐
ZHAO Xiaohao;ZHANG Gang;SONG Jiatong(Beijing Metro Operation Co.,Ltd.,Beijing 100044;Beijing Jiaotong University,Beijing 100044;State Grid Beijing Tongzhou Electric Power Supply Company,Beijing 101100)
出处
《都市快轨交通》
北大核心
2023年第6期116-123,共8页
Urban Rapid Rail Transit
基金
国家重点研发计划(2017YFB1200802)。
关键词
城市轨道交通
飞轮储能
控制策略
再生制动
均速控制
urban rail transit
flywheel energy storage
control strategy
regenerative braking
average speed control
