A FPGA-based multi-principle relay protection chip and its method

Abstract

The invention discloses a multi-principle relay protection chip based on an FPGA and a method. The chip comprises a data collection module, an FPGA module, an MCU module and a communication peripheral interface; the data collection module, the FPGA module, the MCU module and the communication peripheral interface are successively connected. The method comprises steps of converting the inputted voltage and current analog quantity to an voltage signal, inputting the voltage signal into the multi-path selector and an AD unit, transmitting digital signals converted by the AD unit to an FFT unit for operation, transmitting the signal obtained through the operation of the FFT unit to a measurement unit and a hardware protection algorithm unit, transmitting the operation results of the FFT unit, the measurement unit and the hardware protection algorithm unit to a data buffering area, transmitting a relay operation signal of the data buffering area to output control and a dispatching control unit in the MCU module, wherein the MCU modules performs the interaction between the related control data and the dispatching control unit.

Description

technical field [0001] The invention relates to a relay protection chip, in particular to an FPGA-based multi-principle relay protection chip and a method thereof. Background technique [0002] Relay protection device refers to an automatic device that can reflect the failure or abnormal operation status of electrical components in the power system, and act on the circuit breaker to trip or send a signal. Relay protection devices are widely used in existing power systems and play an important role in the new generation of smart substations. In the design of traditional relay protection systems, the architecture of DSP+MCU modules is mostly used, which has certain flexibility and operability. However, with the continuous development of smart grids, the new generation of smart substations requires the miniaturization of substations, Integration, modularization, and intelligence have put forward higher requirements on the protection action speed and integration of relay protec...

AI Technical Summary

Problems solved by technology

In the design of traditional relay protection systems, the architecture of DSP+MCU modules is mostly used, which has certain flexibility and operability. However, with the continuous development of smart grids, the new generation of smart substations requires the miniaturization of substations, Integration, modularization, and intelligence have put forward higher requirements on the protection action speed and integration of relay protection devices. The architecture of DSP+MCU modules needs to be improved in terms of integration, modularization, and reliability.

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