基于单片机的低压配电网综合参数测控系统讨论摘要:为保证配电网的安全运行和了解配电网运行的状况，需要对配电网的各种运行参数进行实时监测，并能根据需要及时地将各种测量参数送往调度监控中心，所以目前的低压配电网综合参数测控得到了广泛的应用。本文介绍了一种将无功补偿器和配电网测控仪两套装置合二为一的设计方法，使得装置在投入成本上降低，在管理上更加灵活方便。本测控系统采纳电压和电流互感器来转换三相四线制用电参数的沟通信号，使用专用电能计量芯片 ATT7026 来采集转换后的沟通信号，将所测量到的参数通过 SPI 口送往主控制器，并在LCD12864上显示所测的各参数。而本系统采纳AT89C52单片机作为主控制器来对整个系统进行控制和监测。同时该测控系统还具有无功功率补偿的作用，配有 RS485 通信，可以将所测量的参数和信息送往调度中心。本测控系统实现了配电网测控和功率因数校正及无功补，具有结构简单、精度高、抗干扰能力强等特点具有很大的市场潜力。关键字：电压互感器，电流互感器，ATT7026,AT89C52,无功功率补偿，RS485 通信Microcontroller-based low voltage distribution network integrated measurement system of researchAbstract：In order to ensure the safe operation of distribution systems and know the status of distribution system operation , there is a need that parameters should be measured and monitored in time, and then be sent to the control center. It stimulates a wide application of the measuring and controling instrument for the low voltage distribution network’s parameters nowadays. When cost or management is taken into consideration, This paper presents a reactive power compensator and the distribution network Monitor two devices into one of the design methods, in accordance, the cost of the instruments will be reduced greatly, and the management will be more flexible. The measuring and controling instrument utilizes voltage and current inductors to transform the AC signal at the three-phase and four-wire system, uses the special electric energy calculation chi...
