基于过零偏移检测的分布式台区户变关系辨识研究

Research on User-transformer Relation Identification in Distributed Station Areas Based on Zero-crossing Offset Detection

针对传统基于高速电力线载波通信技术的集中式台区户变关系辨识方法在不同的载波厂家设备混装时易出现辨识失败的问题,提出了一种基于分布式模式和双沿过零偏移检测的台区辨识方案。文中设计了由集中器经通信模块主节点向从节点下发台区特征,在从节点处进行特征比对并判断电能表计台区归属的分布式辨识模式。此外,针对不同高速电力线载波通信模块对特征信号沿过零检测算法的兼容性问题,设计了交流电信号双沿用户特征采集和辨识算法及相关通信协议支持。最后,通过对不同辨识模式的抄读性能以及抄读和辨识失败的实例进行分析,验证了所提方案的可行性。

Aiming at the problem that the traditional user-transformer relation identification method in centralized station area based on high-speed power line carrier(HPLC)is prone to having identification failure when the equipment of different carrier manufacturers are mixed,a station area identification scheme based on distributed mode and double edge zero-crossing offset detection is proposed.A distributed identification mode is designed,in which the concentrator sends the station area characteristics to station(STA)through central coordinator(CCO),compares the characteristics at STA and judges the ownership of meter station area.In addition,aiming at the compatibility of different HPLC communication modules with the feature signal zero-crossing detection algorithm,the AC signal double edge user feature acquisition and identification algorithm and the related communication protocol support are designed.Finally,the feasibility of the proposed scheme is verified by analyzing the reading performance of different identification modes and the examples of reading and identification failure.