Electrical power system data acquisition and transmission on-chip system supporting IEC61850

Abstract

The invention discloses an electrical power system data acquisition and transmission on-chip system supporting IEC61850. The electrical power system data acquisition and transmission on-chip system comprises a data acquisition interface, a data processing module, an external interface and a communication interface, wherein the acquisition interface comprises an analog-digital converter (ADC)AD 7656 responsible for analog signal acquisition, and a GPIO interface responsible for digital signal acquisition; the data processing module is an FPGA processor embedded with an ARM926 and is responsible for managing transmission of data between ADC and the communication interface and protocol conversion of the data; the external interface comprises UART, IIC and SPI and is responsible for communication with external equipment; the communication interface comprises AES advanced encryption of a presentation layer, MAC of a data link layer, a PHY chip of a physical layer, and supports optical fiber and Ethernet communication. The on-chip system has the characteristics of small size, good functional expandability, flexible communication mode and support of digital substation protocol communication.

Description

technical field [0001] The invention relates to the technical field of electric power communication, in particular to an electric power system data collection and transmission on-chip system supporting the IEC61850 protocol. Background technique [0002] Power system data acquisition is an important link in the safe and stable operation of the system. Applications such as relay protection, power quality monitoring, and disturbance analysis all require the support of system operation data. With the access of renewable energy and the popularization of digital substations, the system puts forward higher requirements for the accuracy and speed (real-time) of data collection. Taking the digital substation as an example, the system's operating data (three-phase voltage, current, switch status, etc.) needs to be collected from the electronic transformer, transmitted through the network in the station, received by the receiving device or processed by the application device to reali...

AI Technical Summary

Problems solved by technology

The quality of communication affects the realization of various application functions of the substation, which in turn affects the stability of the system

The main function of the current acquisition device is to collect data from sensors, but it does not support IEC61850 standard conversion of data, and requires an external protocol converter; at the same time, due to the constraints of data processing capabilities and the requirements of real-time data, generally only a single data acquisition and transmission is performed. , no further processing of the data (such as relay protection, power quality analysis, etc.)

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