The invention provides a power supply system remote monitoring system. A transformer equipment data acquisition module acquires the analog quantity of field transformer equipment and the current, voltage, active power, reactive power, coil temperature and oil temperature at each side of the transformer. A power supply circuit data acquisition module acquires the current, active power and reactive power of a power supply line, the voltage and frequency of a bus, and the three-phase voltage, three-phase current, zero-sequence voltage and zero-sequence current of the power supply line. A circuit breaker data acquisition module, an isolating switch data acquisition module and a grounding switch data acquisition module are respectively used for acquiring the switching quantity of the field equipment. Through a monitoring platform, systematic data storage is performed, monitoring clients can be connected to share data information, and grid maintenance personnel can exchange knowledge and accumulate data. Typical cases are formed based on stored maintenance process logs, maintenance process cases and related standard or specification files. Related standards, specification documents and operation procedures are provided. Knowledge and experience sharing and management are realized.