The invention provides a real-time detection system for a power network fault. The real-time detection system comprises a fault detector; the real-time detection system is characterized in that the fault detector communicates with an information forwarder through a wireless network; and the information forwarder communicates with a monitoring center through the wireless network and comprises a radio frequency transceiver module, a processing and forwarding module and a GPRS module. A real-time monitoring system for a power line fault is used for a common GSM system, and real-time monitoring management on the power line fault is achieved by using a flexible fault judgment algorithm. A ZSE-MS system is used for real-time monitoring, alarming and processing of the power line fault, and is a set of distributed monitoring, centralized management and instant communication intelligent fault monitoring and management system with remote transmission capacity.