Voltage monitoring device for whole power grid

The utility model provides a voltage monitoring device for the whole power grid, which comprises a power supply model and an electrical system powered by the power supply module. The voltage monitoring device for the whole power grid is characterized in that the electric system comprises a single chip microcomputer, a wireless remote transmission module, a communication module and a wireless receiving and sending module, wherein a communication port RX1 and a communication port TX1 of the single chip microcomputer are correspondingly connected with a communication port RX1 and a communication port TX1 of the remote transmission module, a communication port RX2 and a communication port TX2 of the single chip microcomputer are correspondingly connected with a communication port R0 and a communication D1 of the communication module, and a communication port RXD0 and a communication port TXD0 of the single chip microcomputer are correspondingly connected with a communication port RX0 and a communication port TX0