Intelligent substation phase approval device capable of adaptively receiving FT3 transport protocols

Abstract

The invention discloses an intelligent substation phase approval device capable of adaptively receiving FT3 transport protocols, which comprises an FT3 data optical signal receiver connected with an FT3 interface of a merging unit in an intelligent substation, double CPUs (Central Processing Units) connected with the FT3 data optical signal receiver, a man-machine interactive system, and an adaptive power supply management module connected with an outside electric supply interface. The device has the benefits that 1, compatible hardware loop design is adopted, the FT3 sample data transport protocols at different transport baud rates and message lengths are identified by software automatically, additional configuration of a user is not required, and the device can adaptively perform communication monitoring and decoding on sample data in an FT3 format, and achieves sampling and receiving functions on the FT3 data; 2, the device can receive various sample data in the intelligent substation; and 3, the sample data is accurate and real-time.

Description

Technical field [0001] The invention belongs to a phase approval device, and particularly relates to an intelligent substation phase approval device that is adaptively received by the FT3 transmission protocol. Background technique [0002] The phase meter is a professional instrument for on-site detection of the secondary circuit in the field of power system energy measurement and relay protection. It can be used to detect the phase relationship between each group of CTs in the relay protection, and to determine whether the electrical wiring is correct. The traditional phase meter is directly connected to the analog electrical signal and realizes the corresponding function, but for the intelligent substation, the large-scale application of IEC61850 communication protocol, electronic transformer, digital acquisition unit and merging unit makes the sampling in the station digitalized, and electrical equipment The sampling signal between the traditional cable analog transmission mo...

AI Technical Summary

Problems solved by technology

The traditional phase meter is directly connected to the analog electrical signal and realizes the corresponding functions, but for the smart substation, the large-scale application of the IEC61850 communication protocol, electronic transformer, digital acquisition unit and merging unit makes the sampling in the station digital, and the electrical equipment The sampling signal between them has changed from the traditional cable analog transmission method to the optical fiber digital transmission method, which makes the secondary nuclear phase technology and phase meter based on conventional electromagnetic transformers no longer applicable

In response to this situation, relevant research and development work has been gradually carried out in China, but at present, there are few phase verification devices suitable for smart substations in China, and most of them are based on the hardware platform architecture of a single embedded processor, digital sampling accuracy and sampling real-time performance Limited, does not have the collection of digital sampling signals of FT3 transmission protocol, or can only meet the reception of FT3 format data under a single encoding method, and cannot complete the phase verification work of smart substations

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