Active load information collection system with demand response

In order to meet the demand of active load side management requirements for two-way transmission of monitoring data, a two-way automatic communication system (TWACS) considering the characteristics of the dispersed active load with the function of electricity measurement and electricity information remote acquisition is designed in this paper. The user terminal in active load side consists of MCU, A/D, voltage and current transformer, signal conditioning circuit, thyristor and modulation resistance, etc. The functions of forward and reverse power measurement of active load, power factor monitoring, TWACS modulation and demodulation are realized through software calculation. The system has characteristics of convenient installation, low equipment cost, no communication service fees, so that it conforms to the operation and location distribution features of the active load.