IEC 61850/MMS simulation method of concurrent signals of multiple devices

The invention discloses an IEC61850/Manufacturing Message Specification (MMS) simulation method of concurrent signals of multiple devices. The IEC 61850/MMS simulation method comprises the steps as follows. Substation configuration description (SCD) files are imported, and the devices and signal libraries thereof are analyzed. Communication service of each device is started. Initialization of signal upward transmission is finished. A shared memory where commands are stored is established, and furthermore a command bus is established. Each device extracts the signals to be upward transmitted from respective signal library and establishes mapping tables associated with the signals. The commands are transmitted to the command bus through a local server interface program. The devices simultaneously receive the commands from the command bus, extract the corresponding signals through the mapping tables according to the received commands, and immediately transmit the signals. The devices can receive the commands at the same time through establishment of the command bus. A report polling mechanism is changed into immediate transmission of assigned signals. The IEC 61850/MMS simulation method of the concurrent signals of the multiple devices has high real time performance. The efficiency of signal transmission is raised by many times. The data mapping is established for all of the transmitted signals. The signals are not needed to be searched when transmitted, and the communication efficiency is greatly improved.