CAN bus based electric energy quality real-time monitoring and evaluation system

A CAN bus, power quality technology, applied in the direction of electrical signal transmission system, measurement of electrical variables, signal transmission system, etc., can solve the problems of system paralysis, poor flexibility, low overall efficiency, etc., to reduce the requirements of hardware circuits, enhance Reliability, effect of improving error
CN101079184AInactive Publication Date: 2007-11-28SOUTH CHINA UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
SOUTH CHINA UNIV OF TECH
Publication Date
2007-11-28
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses a real-time monitoring and estimating system of power quality based on CAN bus for electric system and each class of power distribution system, which comprises the following network structures: data gathering layer as the first layer, which groups multiple stations to manage and transmits all the electric power network signal into standard voltage to the data gathering card; data disposing layer as the second layer, which converses the electric parameter by data gathering layer to realize the calculation and analysis of electric quality such as voltage fluctuation, harmonic analysis, flicker and so on; data transmitting layer as the third layer, which utilizes CAN bus to establish high-reliability opened data communicating circuit and realizes the conversion of order and data between middle control chamber PC set and working control machine; user layer as the fourth layer, which builds friend operational interface to provide display, storage, analysis and estimation function of the monitored data and makes the user to observe real-time data of wind electric-field operation directly.
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Description

technical field

[0001] The invention relates to a real-time monitoring and evaluation technology of electric energy quality, which is mainly applicable to the real-time monitoring and evaluation of electric energy quality of power systems and power distribution systems at all levels. Background technique

[0002] At present, the existing power quality monitoring system products can be roughly divided into three categories: offline portable instruments, stand-alone industrial computer mode and master-slave mode based on RS232 / 485 simple network communication.

[0003] Offline portable instruments can only perform limited data acquisition and recording functions with human participation, and cannot provide rich and satisfying storage and historical data analysis functions.

[0004] The stand-alone industrial computer method has little consideration in the 3-phase real-time acquisition and analysis, the working method is unreliable, and the collected and analyzed data cannot be...

Claims

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