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

Abstract

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.

Description

technical field [0001] The invention relates to the technical field of intelligent substation communication, in particular to an IEC61850 / MMS simulation method for multiple devices to send signals concurrently. Background technique [0002] With a large number of intelligent substations put into use, IEC61850 (the only global common standard in the field of power system automation) / MMS (manufacturing message specification) communication is widely used in substation automation systems, and systems such as the background and substations are all adopted The switch is connected to various smart devices, but if the data processing capability of the switch, background or sub-station is insufficient in a similar avalanche, data frame loss or delayed transmission will be caused, which will bring serious consequences to the operation of the entire system, so high real-time is required To check whether the station control layer data can run normally by simulating the simultaneous tran...

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Problems solved by technology

[0002] With a large number of intelligent substations put into use, IEC61850 (the only global common standard in the field of power system automation) / MMS (manufacturing message specification) communication is widely used in substation automation systems, and systems such as the background and substations are all adopted The switch is connected to various smart devices, but if the data processing capability of the switch, background or sub-station is insufficient in a similar avalanche, data frame loss or delayed transmission will be caused, which will bring serious consequences to the operation of the entire system, so high real-time is required Realistically simulate the simultaneous transmission of multi-device signals in the substation to check whether the station control layer data can run normally

[0003] Traditional analog multi-device signals are sent at the same time, and it takes a long time for various devices to receive commands, and it is difficult to achieve true simultaneous sending

Moreover, the domestically developed MMS is based on the development kit of SISCO (Cisco). Under the non-real-time operating system, it takes a long time to send commands to each device, and each device cannot receive the signal to send commands at the same time; The signal transmission of the package is based on the inspection mechanism. The device detects the signal change of all signals according to the inspection time interval, and then sends the changed signal. This makes it difficult to send in real time, so the signal transmission delay is also Relatively large; the signals sent are all based on the data search method, so it takes a long time

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