摘要
中压柔性直流铁路牵引供电系统因能解决现有电气化铁路存在的过分相和电能质量问题而受到广泛关注。本文提出中压柔性直流铁路牵引供电系统的运行域模型,旨在通过对最少变量的监测实现系统供电安全性评价。首先,介绍中压柔性直流铁路牵引供电系统的结构。然后,依次建立工作点向量、系统等式约束、系统不等式约束,形成中压柔性直流铁路牵引供电系统运行域模型,并给出模型的解析化求解方法。最后,通过算例求解得到机车牵引电流和机车运行位置需满足的运行域解析表达式,实现对中压柔性直流铁路牵引供电系统的供电安全性评价。本文工作可为中压柔性直流铁路牵引供电系统的安全运行和调度提供参考。
The medium-voltage flexible direct current railway traction power system has been widely concerned because it can solve the problems of neutral section and power quality in existing electrified railway. In order to evaluate the power supply security of the system by monitoring the least variables, this paper proposes the dispatchable region model for the medium-voltage flexible direct current railway traction power system. Firstly, the structure of the medium-voltage flexible direct current railway traction power system is introduced. Secondly, the operating point vector, equality constraints and inequality constraints of the system are established in turn to form the dispatchable region model for the medium-voltage flexible direct current railway traction power system, and the analytical solving method of the model is given. Finally, the analytical dispatchable region expressions between traction currents and running positions of locomotives are obtained by solving a numerical example, and the evaluation of power supply security is realized for the medium-voltage flexible direct current railway traction power system. This paper provides a reference for secure operation and dispatching of the medium-voltage flexible direct current railway traction power system.
作者
莫少雄
MO Shaoxiong(CSSC Systems Engineering Research Institute,Beijing 100094;CSSC Intelligent Innovation Research Institute Co.,Ltd,Beijing 100036)
出处
《电气技术》
2022年第10期41-50,共10页
Electrical Engineering
关键词
柔性直流
铁路牵引供电系统
运行域
牵引电流
解析表达式
flexible direct current
railway traction power system
dispatchable region
traction current
analytical expression
