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Generator contemporary process monitoring and analyzing system

A process monitoring and analysis system technology, applied in the direction of motor generator testing, etc., can solve problems such as inability to specifically distinguish and analyze technical reasons, and achieve the effect of light weight and small volume

Active Publication Date: 2012-07-04
CHANGSHA VICTORY ELECTRICITY TECH
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AI Technical Summary

Problems solved by technology

[0008] The current detection device can only specifically analyze the magnitude of the voltage difference at the moment of grid connection, but cannot specifically distinguish the specific relationship between the amplitude and phase of the two voltage vectors at the moment of grid connection
As a result, in the case of abnormal conditions in the same period, the specific technical reasons cannot be smoothly analyzed

Method used

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  • Generator contemporary process monitoring and analyzing system
  • Generator contemporary process monitoring and analyzing system
  • Generator contemporary process monitoring and analyzing system

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Embodiment Construction

[0029] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention will be further explained in conjunction with specific drawings.

[0030] See figure 1 A schematic block diagram of a generator synchronization process monitoring and analysis system according to an embodiment of the present invention, the device includes:

[0031] 1. Electricity collection and upload module: Collect and upload generator voltage, instantaneous value of system voltage, closing command signal and closing action signal through the programmable logic controller. This module includes two sub-modules:

[0032] (1) Data extraction sub-module: Four power signals such as generator voltage are sent to the synchronous data acquisition card through the power transmitter for sampling, buffered in the FIFO, and the data in the FIFO is then extracted to the Modbus space. The data in the Modbus space is read by the Modbus Master o...

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Abstract

The invention relates to a generator contemporary process monitoring and analyzing system which comprises an electric quantity collecting and uploading module, a data calculating and analyzing module and a result output module. In the system, a PAC (Programmable Automation Controller) is used as a lower computer, and the storage and the real-time transmission of mass data of 12 channels are realized by utilizing the characteristic of multiple CPUs of the PAC. A concrete method for utilizing the PAC of the system comprises the following steps of: cutting continuously collected data into small pieces by utilizing double systems of the PAC; and realizing real-time uploading through a TCP / IP (Transmission Control Protocol / Internet Protocol) in an interval between two data samplings of a sampling module so that an upper computer can receive data from the lower computer in the process of a field experiment for analyzing. The system can realize data synchronous uploading, supports the recovery of a contemporary process and has the function of automatic analysis on the contemporary process of the generator.

Description

Technical field [0001] The invention belongs to the application field of secondary monitoring automation of power systems, and relates to a monitoring and analysis system for the operation process of a generator synchronous system. Background technique [0002] The grid-connected generators are called parallel operation. With the continuous development of the power system, the single-unit capacity of synchronous generators is also increasing, and the improper parallel operation of large-scale units will lead to serious consequences. Therefore, improving the accuracy and reliability of parallel operation has great practical significance for the reliable operation of the system. [0003] The ideal condition for paralleling is that the generator voltage phasor and the system voltage phasor are equal, that is, the frequency and amplitude are equal respectively, the phase difference is zero, and the frequency difference is within a reasonable range. Before connecting to the grid, it i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/34
Inventor 陈众薛伟王弦赵扬
Owner CHANGSHA VICTORY ELECTRICITY TECH
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