【摘要】 应用模分析理论对配电网自动化载波通信在线路故障时的衰耗情况进行了分析 ,分别定量地讨论了采用单相耦合方式和两相耦合方式的载波通道在线路发生各种故障时的故障附加衰耗。最后对两种不同的耦合方式在线路故障时的通信性能进行了比较和评价 ,认为经过特殊处理和特殊考虑的配电网载波在线路故障时可以保证通信的可靠性更多还原

【Abstract】 The reliability of distribution line carrier (DLC) is always suspicious when faults occur in feeders. The paperanalyzes the attenuation of DLC in the occurrence of various faults by using the modal analysis theory. The quantitativelyadditional attenuation of DLC channels when faults occur. with single phase coupling mode or two-phase coupling mode. isdiscussed. The communication performance of the proposed two coupling modes is compared and evaluated. The phase tophase coupling mode is verified to be reliable and suitable for the feeder automation. The conclusion can be drawn from thediscussion that the phase to phase coupling mode based DLC has excellent reliability under the full consideration of channelsattenuation and it can be used in the emergency control when faults occur.更多还原