A pxi-e-based relay protection controller configured with smart grid communication protocols

Abstract

The invention discloses a relay protection controller based on a PXI-e and provided with a smart power grid communication protocol. According to the relay protection controller, a data package sent by an external electric power protection device enters a central processing unit through four groups of PCI-e x1 buses with 250MB bandwidths after passing the PXI-e bus, wherein the four groups of PCI-e x1 buses are collected by a bus controller. The central processing unit calls an IEC 61850 electric power communication protocol stack and an IEEE 1588 time tick communication protocol stack installed in a memorizer to solve the obtained data package through an RTOS, then, the central processing unit carries out operation analysis on data, and the data are sent to a device to be controlled through the bus controller by the PXI-e bus. The IEC 61850 electric power communication protocol stack and the IEEE 1588 time tick communication protocol stack are used for achieving timing with the external electric power protection device through an Ethernet interface, and therefore clock synchronization demands can be met. The relay protection controller has the advantages that nanosecond-level synchronization with signal acquisition and control board cards can be achieved, and clock precise synchronization of an electric power protection system can be achieved.

Description

technical field [0001] The invention belongs to the field of electric power protection, and specifically relates to a PXI-e-based relay protection controller configured with a smart grid communication protocol. Background technique [0002] In the field of relay protection, through the relay protection device, when a fault or abnormal working condition occurs in the power system, within the shortest possible time and the smallest area, the faulty equipment is automatically removed from the system, or a signal is sent to be eliminated by the on-duty personnel Root causes of abnormal working conditions to reduce or avoid damage to equipment and impact on power supply in adjacent areas. In order to realize the power system protection function, the relay protection device must meet the four basic requirements of selectivity, quick action, sensitivity and reliability in technology, especially for the relay protection acting on the relay trip, it should meet the four requirements ...

AI Technical Summary

Problems solved by technology

The core controller in the relay protection device occupies the most important position in the device; most of the current relay protectors use embedded technology, and single-chip systems such as single-chip microcomputers are used as the central processor. The processor has weak computing power and is difficult to quickly Handle emergencies and complex communication messages; there is generally no operating system installed inside, it is difficult to schedule complex multi-tasks, and it does not have hard real-time response capabilities; due to the low performance of the central processing unit, it is difficult to perform multi-port high-speed Ethernet communication

Images