subway substation meaning in Chinese

地下变电站

Design option of integrated automation system for subway substation based on lonworks technology
的地铁变电站综合自动化系统设计方案
The development , function and requirement of subway substation automation system were briefly introduced in this thesis . the principle and calculating method of current differential protection was analyzed in detail . and the synchronized data - sampling methods used in this protection were analyzed
本文简要介绍了地铁变电站自动化系统的发展概况及其功能要求，详细分析了电流纵差保护的原理和计算方法，并对比分析了光纤电流纵差保护的各种数据同步方法。