Pilot protection measurement data recovery method and pilot communication system

Abstract

The invention discloses a pilot protection measurement data recovery method and a pilot communication system, which belong to the field of electric power communication. The method comprises the steps of S1, receiving a plurality of messages sent by a protection device, verifying the correctness of each message, and putting the original measurement signal x in the correct message into a buffer queue y in sequence according to the number of the message, S2, setting a buffer array phii corresponding to each correct message, and arranging all the buffer arrays phii in rows to form an observation matrix phi, S3, setting a sparse basis matrix psi, and constructing an underdetermined equation set of the observation matrix phi, the observation value, the sparse basis matrix psi and the sparse coefficient s based on a compressed sensing principle, and S4, solving the underdetermined equation set by using a reconstruction algorithm to obtain a sparse coefficient s, and performing inverse transformation on s by combining the sparse basis matrix psi to obtain an original measurement signal x. Wrong and missing data in the transmission process are corrected based on the compressed sensing algorithm, and the technical problem of poor transmission reliability in the communication process is solved.

Description

technical field [0001] The invention belongs to the field of electric power communication, and more specifically relates to a method for recovering measurement data of longitudinal protection and a longitudinal communication system. Background technique [0002] With the development of wireless communication technology, the application of low-latency and highly reliable 5G communication technology in the power industry has been put on the agenda, which has greatly improved the reliability and real-time performance of communication between devices in the power system. Especially in the distribution network, the topology of the line is complex, the construction of optical fiber is difficult, and it is not suitable for laying optical fiber communication lines. Moreover, the construction period of the optical fiber network is long and the construction cost is high, which restricts the construction of communication lines in the distribution network. The degree of automation of th...

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Problems solved by technology

[0005] Aiming at the above defects or improvement needs of the prior art, the present invention provides a method for recovering longitudinal protection measurement data and a longitudinal communication system, the purpose of which is to correct errors and missing data in the transmission process based on a compressed sensing algorithm, Solve the technical problem of poor transmission reliability in the communication process

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