B code decoding technology fused institute of electrical and electronic engineers 1588 (IEEE1588) intelligent power grid time transmission method and device

Abstract

The invention discloses a B code decoding technology fused institute of electrical and electronic engineers 1588 (IEEE1588) intelligent power grid time transmission method. The time signal input end of an embedded processor and network interface module on an intelligent power grid transformer substation time transmission device has two groups of input signals, one group comprises 1 pulse per second (PPS) signals and national marine electronics association 0183 (NMEA0183) signals, and the other group comprises inter-range instrumentation group-B (IRIG-B) signals; a signal selection module is used for selecting a group of signals with the highest time accuracy, and the priorities of the 1PPS and NMEA0183 signals are higher than that of the IRIG-B signals; a decoding module deserializes the signals selected by the signal selection module, and provides a timestamp for the embedded processor and network interface module; and a time protocol for time message resolution in an IRIG-B decoding module is an NMEA0183 protocol, and a global positioning system (GPS) receiver transmits position and speed information to a processor through a serial port according to the standard specification of the NMEA0183 protocol which is a standard protocol of the GPS receiver.

Description

technical field [0001] The invention relates to an IEEE1588 smart grid time transmission method and device incorporating B code decoding technology. Background technique [0002] With the continuous and rapid development of my country's economy, the demand for electricity is growing rapidly; in addition, with the development of the digital economy and the IT era, electricity consumers have higher and higher requirements for electricity. The existing power system can no longer meet the demand. It is the trend of the times to accelerate the transformation of power production, transmission and consumption modes, promote the transformation of the development model of the power industry, and establish a strong smart grid with Chinese characteristics. [0003] The smart grid is built on the basis of an integrated, high-speed two-way communication network, using advanced sensing and measurement technology, advanced equipment technology, advanced control methods and advanced decisio...

AI Technical Summary

Problems solved by technology

But this does not compensate and correct the errors introduced during the transmission from the transmitter to the receiver

At the same time, the running speed of the single-chip microcomputer is relatively slow, and a large time delay will be introduced in the processing process, which will bring a large error to the reference time of the system.

Using ARM7 on the hardware platform, or even lower platform, the running speed is slower

Images