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随着我国电气化快速发展,电力技术和计算机技术迅速发展,准能公司电气化铁路的扩能改造工作已全面展开,特别是对牵引变电所的改造迫在眉睫。牵引变电所继电保护也不断的更新,微机保护将逐步取代传统的继电保护,具有功能完善、使用灵活、便于安装与维护的特点,并有传统的差动继电器无法实现的通信功能,可将采样数据、保护装置的动作情况及故障录波等数据送至远动监控系统,以实现牵引变电所综合自动化的要求。本文结合在大准电气化铁路六座牵引变电投运的WBH-891型电铁主变压器差动保护装置的主要特点,对微机差动保护的应用作一简单分析。
With the rapid development of electrification in our country, the rapid development of power technology and computer technology, the expansion and transformation of the quasi-electric railway company has been carried out in full swing, especially the transformation of traction substation is imminent. Traction substation relay protection is constantly updated, microcomputer protection will gradually replace the traditional relay protection, with a fully functional, flexible, easy to install and maintain features, and traditional differential relay communication functions can not be achieved, Sampling data can be protected, the operation of the device and fault recorder and other data sent to the remote monitoring system to achieve traction substation automation requirements. Based on the main features of the WBH-891 main transformer differential protection device put into operation by six traction substations put forward by Dazhun Electrified Railway, the application of microcomputer differential protection is briefly analyzed.