煤矿井下供电网络分布式防护装置的应用研究

Application of Distributed Protection Device in Coal Mine Power Supply Network

针对煤矿井下供电网络保护系统所存在的保护逻辑复杂、可靠性差、灵敏性不足的现状,应用一种新的矿井井下供电网络分布式防护装置。该装置分母线保护装置和接地线保护装置,通过高速数据通信系统实现数据信息的共享和融合。根据实际应用表明,该系统能够实现40 ms故障的快速隔离,故障处理速度比传统防护装置缩短了89.6%。

In view of the complex protection logic,poor reliability and insufficient sensitivity of underground power supply network protection system in coal mine,a new distributed protection device for underground power supply network is proposed.According to the characteristics and requirements of underground power supply,the device is divided into busbar protection device and ground wire protection device.The data information is shared and fused through high speed data communication system.According to the practical application,the system can realize the rapid isolation of 40 ms faults,and the fault processing speed is 89.6%shorter than that of the traditional protective device,which is very important to improve the safety of coal mine power supply.