A message generating system and method for realizing the output function of sampling value message loss control

Abstract

The invention discloses a high-precision IEC61850 message generating system with a sampling value message loss control output function. The system consists of a human-computer interaction unit, a waveform sampling and loading unit, a data analysis unit, a message output control unit, a message framing unit, a message output unit and a message data analysis unit. The invention provides an SHA-256 algorithm random packet loss control method based on Galois ring oscillation. Through the design of Galois ring oscillation and random signal sources generated by a postprocessing circuit, the entropy value of the random signal sources is improved by an SHA-256 algorithm; the sampling value message random loss is controlled by using a packet loss point calculation algorithm and the packet loss rate; the sampling value message random loss process in a practical IEC 61850 message transmission system is really simulated; the problem that the existing IEC 61850 message generating system cannot really simulate or output the field sampling value message random loss is solved; the test method and the test technical support are provided for intelligent power network operation reliability; the normal operation of an intelligent power network is guaranteed.

Description

technical field [0001] The invention belongs to the field of reliability testing of smart grid equipment, in particular to a high-precision IEC61850 message generating system capable of simulating the whole process of electronic transformer sampling value message output and random loss. Background technique [0002] The increasing shortage of traditional energy and the increasing environmental pollution are driving the transformation of the traditional grid to the smart grid. The smart grid can provide safe, efficient, clean and friendly power services for the economy and society. Since 2009, the State Grid Corporation proposed to build a unified Since the development goal of a strong smart grid, the smart grid has been developing rapidly in China. Smart grid equipment is developing towards digitalization and intelligence, communication technology has been widely used, and various communication protocols have been introduced, such as IEC61850 and IEC61970 communication proto...

AI Technical Summary

Problems solved by technology

The existing IEC61850 message generation system can only output ideal sine and cosine digital message signals, and the output messages are prone to delay, blocking and loss. The reliability of the message generation system itself needs to be further improved. The most important One point is to lack the function of the whole process of high randomness sampling value message loss under the simulated field environment conditions, and the random loss of IEC61850 message under realistic conditions can not be realized. The test of the operational reliability of IEC61850 protocol digital equipment is aimed at by the present invention problem, a solution that can truly simulate the high random loss of messages in the IEC61850 message transmission system can be implemented to test the reliability of the IEC61850 protocol digital equipment before network operation, and ensure the safe operation of the smart grid

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