Abstract: Due to the complex operating conditions of the power grid systems in several regions,the current panoramic data monitoring methods for grid faults are susceptible to interference from the collected information,and the monitoring accuracy is low and the reliability is not high. To this end,a new remote monitoring method for massive fault panoramic data of the power grid is proposed. The power grid fault panoramic data monitoring system is designed and installed on the overhead transmission and distribution lines and the buried cables of the urban network to monitor the power grid fault panoramic data,and the software design of the fault indicator is realized through the fault panoramic data detection method. Five types of monitoring methods are used to establish protection entropy and obtain the relative protection entropy. Based on the relative protection entropy, two criteria are proposed to judge the panoramic data of grid faults,so as to realize the monitoring of massive fault panoramic data of the power grid. The experimental results show that applying the proposed method to the massive fault panoramic data monitoring of a certain area power grid has not only high reliability,but also low economic loss and high monitoring accuracy.