光纤通信技术在容性设备及避雷器监测中的应用

Application of Optical Fiber Communication Technology in the Capacitive Devices and Arrester Monitoring

介绍了一种新型分布式的容性设备及避雷器在线监测系统。该监测系统针对传统电压过零点同步方法易受谐波干扰、电磁干扰等影响而难以持续稳定监测的问题,通过分布式数据采集和光纤通信同步方式采信各被监测设备的泄漏电流信号和电压信号,并经综合处理单元分析和远传数据,以提高监测数据可靠性。对比测试及现场试的运行结果表明,该监测系统测量准确性和稳定性比传统监测方式有很大提高,具有实用和推广价值。

A new distributed capacitive devices and arrester on-line monitoring system is introduced in this paper. According to the issues of lack of continuous and stable monitoring resulting from harmonic interference and electromagnetic interference in the traditional voltage zero crossing synchronization method, the system acquires the leaked current and voltage signals from the monitored devices using a combinatory of distributed data collection and an optical fiber synchronous communication mode, and analyzes these data through an integrated treatment unit, then transfers them to remote servers in order to improve reliability of the monitoring data. Comparison tests and on-field operation results show that the proposed monitoring mode is better than the traditional modes in terms of accuracy and stability and the monitoring system has a practical and promotional vale.