Abstract
Smart grid and transparent power grid require extensive collection of basic information of power grid, which puts forward higher requirements for intelligent measuring technique. In this paper, the micro intelligent current sensor is developed, including the design of the whole structure of the sensor, signal processing circuit, digital processing circuit, energy acquisition, wireless communication and other functional modules, and the IP and insulation protection design is completed. Finally, the long-term trial application in the field of low-voltage power distribution is carried out. The results show that the current sensor can work stably and reliably for a long time. It has the advantages of miniaturization, high integration, convenient installation and remote management. It can collect the real-time operation data of the distribution power grid, and provide sufficient information support for the construction of the transparent power grid.
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