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FPGA-based method and system for preventing relay protection misoperation

A technology of relay protection and malfunction, applied in emergency protection circuit devices, electrical components, etc., can solve the problems of malfunction of relay protection, protection data errors, etc. Effect

Active Publication Date: 2017-09-15
XUJI GRP +3
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide an FPGA-based method for preventing relay protection from malfunctioning, which is used to solve the problem of relay protection malfunction caused by abnormal CPU protection data errors, and also provides a FPGA-based method for preventing relay protection The system of electrical protection misoperation

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  • FPGA-based method and system for preventing relay protection misoperation
  • FPGA-based method and system for preventing relay protection misoperation
  • FPGA-based method and system for preventing relay protection misoperation

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Embodiment Construction

[0025] The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing:

[0026] A kind of embodiment of the system of preventing relay protection malfunction based on FPGA of the present invention:

[0027] A system based on FPGA to prevent relay protection malfunction, including power supply, CPU, startup loop, exit loop, external FLASH and FPGA; CPU sends protection data to FPGA through external bus; external FLASH is used to store FPGA program, and When the power is turned on, the FPGA program is booted and loaded; the power supply provides the FPGA with the power and configuration chips required for normal operation; the protection data signal sent by the CPU is processed by the FPGA, and then sends out a protection start signal and a protection exit signal, which are respectively driven by the start loop and the exit loop The corresponding start relay and exit relay act, and at the same time, the FPGA triggers a p...

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Abstract

The invention provides an FPGA-based method and system for preventing relay protection misoperation. A CPU periodically transmits protection starting / outlet data to an FPGA, and when the FPGA detects that the protection starting / outlet data is valid, a starting / outlet relay is controlled to act; when the FPGA detects that a protection outlet state signal is invalid, and after a timed non-continued set time, the FPGA detects that the protection starting / outlet data is valid, the starting / outlet relay is controlled to act; or when the data is invalid, and after the timed non-continued set time, the starting / outlet relay is controlled not to act. By virtue of the method and the system, the protection starting / outlet data accuracy and relay protection action reliability are improved; in addition, the protection starting and outlet signals are sent out directly through the FPGA, without through an outlet plug-in, so that multilayer data transfer is reduced, and speed, reliability and accuracy of relay protection are improved; and furthermore, the periodical judgment on the protection data is simple in logic, troublesome signal content analysis is omitted, and the FPGA internal resource is saved.

Description

technical field [0001] The invention belongs to the field of relay protection automation of electric power engineering, and in particular relates to a method and system for preventing malfunction of relay protection based on FPGA. Background technique [0002] In order to adapt to the requirements of economic and social development, and to cope with global climate change and major challenges faced by power grids, many countries have carried out research and practice of smart grids. The construction of smart substations has become an inevitable choice for the development of the power industry. It is of great significance to my country's active response to climate change, ensuring sustained and rapid economic and social development, promoting the optimization and efficient use of energy structures, ensuring the safety of power supply, cultivating strategic emerging industries, and driving the development of related industries. important meaning. [0003] The realization of sma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/26
CPCH02H7/262
Inventor 王振华马志敏周东杰赵会斌吕玄兵周俊华王全海贺渊明
Owner XUJI GRP
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