摘要
研究和开发了一种地铁直流保护隔离放大器模块,用于地铁直流高压母线的电压隔离、数据采集和传输。该模块应用数字信号处理器实现直流母线电压和电流等相关数据的采集,并且以光纤为媒介实现数据的传输。介绍了该装置的实现方案。试验和实际应用表明,该装置不仅能够满足保护设备工作环境的高绝缘要求,也保证了数据传输的高速和高可靠性。
This paper indroduces a buffer amplifier which is used in metro DC protective system for electrical isolation and in the measurement of current and voltage, then the measured values are sent to the PU（processor unit）via fiber optic cable. The design of this device is discussed, and the experimental and application results indicate that this device has a good performance with high speed and reliability in data transmission.
出处
《城市轨道交通研究》
2008年第8期43-46,52,共5页
Urban Mass Transit
关键词
地铁供电
牵引变电所
直流保护
隔离放大器
subway power supply
traction substation
DCprotection
buffer amplifier
