【摘要】 针对电力远程监测系统降低组建与运行成本、提高通信可靠性和系统实时性的需求,提出并研制了一种基于CAN增强模式、集公用配电变压器运行参数观测和低压居民用户电量检测为一体的分布式电力远程自动监测系统,给出了系统构成与测量原理,介绍了由公用电话线、CAN总线、RS-485总线构成的多级信道的信息流程及系统的通信协议,论述了增强模式下集中器中CAN控制器的寄存器分配方法,详细介绍了系统的主、从集中器识别方法和系统的点名、广播通信的信息帧识别方法.实际运行表明,主集中器可以与各从集中器进行点对点通信,也可对所有从集中器进行全局广播通信,主站可以实时监测公用配电变压器的运行状态和低压居民用户的用电量,系统组建方便,运行成本低,可靠性高.更多还原

【Abstract】 For reducing set-up and running cost,improving communication reliability and system real-time performance in electric power remote monitoring system,a distributed electric power remote monitoring system based on PeliCAN mode was proposed,which monitors operation parameter of public distribution transformer and detects the electric quantity of low-voltage users.The system structure,measurement principle,and information flow composed of public telephone wire,CAN bus and RS-485 bus,and communication protocol,were given.The register allocation method of CAN controller based on the PeliCAN mode was discussed.The identification method of master/slave concentrator and information frame recognition technology of calling and broadcasting communication were introduced.The practical applications proves that the system is characterized as simple design,low operating cost and high reliability.The master concentrator could communicate with the slave concentrator by point to point or global broadcasting.The main station could monitor the operation state of public distribution transformer and detect the electric quantity of low-voltage users in real time.更多还原