Standard digital power source with controllable message discreteness and application method thereof

Abstract

The invention discloses a standard digital power source with controllable message discreteness and an application method thereof. The standard digital power source comprises a main control FPGA moduleand an optical port Ethernet output module, wherein the main control FPGA module comprises a cycle counter used for generating a count value as seed output and a random number generator used for generating a random number according to a seed, and the optical port Ethernet output module is used for generating an IEC-61850 message to be outputted based on a packet loss control parameter formed by the random number; the application method comprises a random sequence generation method based on chaotic mapping and random packet loss control with controllable probability realized by controlling thepacket loss state of the output IEC-61850 message through the optical port Ethernet output module. The random sequence information entropy generated by the standard digital power source is large, theprobability is controllable, the message dispersion is reduced, the verified digital electric energy meter can be verified, the actual abnormal working condition can be well simulated, and the detection requirement of the abnormal communication state of the digital electric energy meter is met.

Description

technical field [0001] The invention relates to a digital electric energy meter verification technology in the field of electricity measurement, in particular to a standard digital power source with controllable message discreteness and an application method thereof. Background technique [0002] Digital energy meters are widely used in digital substations. The accuracy and reliability of their measurement performance is an important guarantee for the stable and sustainable development of digital energy metering systems. Standard power sources are the core equipment for calibrating digital energy meters to ensure their reliable performance. Complete functions are the prerequisite for comprehensive testing of digital energy meters. With the continuous development of smart grid, the requirements for equipment under abnormal working conditions are constantly increasing, and the multi-influencing factor verification tests are increasing. The standard "GB / T17215.303-2013 Special...

AI Technical Summary

Problems solved by technology

Due to the interconnection of internal circuits, using unfavorable conditions such as competitive risks to generate random numbers may cause the state machine of the FPGA to run away, and at the same time use multiple NAND gate circuits to increase the power consumption of the FPGA

In addition, the internal layout and routing of the FPGA have been determined through compilation, and the probability distribution of random numbers generated by logic competition is uneven in time (the correlation coefficient is greater than 0.3), and it cannot be considered to have good randomness statistically.

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