Wind power converter monitoring system

A technology for wind power converters and monitoring systems, applied to electrical components, circuit devices, etc., to achieve the effects of large data throughput, convenient installation and disassembly, and fast transmission speed

Active Publication Date: 2013-01-23
SHANGHAI JIAODA INTELLECTUAL PORPERTY MANAGEMENT CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] 2. Data processing: In the patent CN 200910107587.5, the uploaded data is limited to the storage of the data, but the analysis and use of the data is not mentioned

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Such as figure 1 As shown, a wind power converter monitoring system is composed of a front-end sensor module 1, a signal conditioning module 2, a virtual instrument data acquisition module 3 and a system software module 4 on the PC side:

[0047] The front-end sensor module 1 is used to convert voltage, current and temperature signals into electrical signals, and the signals are input into the conditioning module for conditioning;

[0048] The signal conditioning module 2 is used for conditioning the signal output by the front-end sensor module, sampling, amplifying, and filtering the sensor signal output by the current, and inputting the output signal of the signal conditioning module into the virtual instrument data acquisition module;

[0049]The virtual instrument data acquisition module 3 is used to carry out AD sampling to the voltage signal output by the signal conditioning module, and carry out data communication with the PC through the virtual instrument bus; ...

Embodiment 2

[0056] In this embodiment, the temperature measurement accuracy is relatively high, and the temperature sensor can use a PT100 thermal resistance. Its temperature signal conditioning circuit adopts a bridge circuit (according to the wire system of the PT100 used, that is, two-wire, three-wire, or four-wire system), which converts the temperature signal into a voltage signal, and then performs signal conditioning through the electrical signal conditioning circuit. Other configurations remain unchanged, as in figure 2 shown.

[0057] The implementation of the virtual instrument and system software is the same as that in Embodiment 1.

Embodiment 3

[0059] This embodiment is aimed at the case where there are many measurement points of the converter and the amount of data is large.

[0060] The temperature sensor can choose thermocouple and PT100 thermal resistance at the same time. The thermocouple measures the temperature inside the narrow or component, and the thermal resistance measures the temperature on the surface of the component. Its conditioning module is also equipped with a cold junction compensation circuit and a bridge circuit, which are respectively connected to a thermocouple and a PT100 thermal resistance. Other configurations remain unchanged, as in figure 2 shown.

[0061] In the case of a large amount of data, the realization of the system software module can choose a multi-thread structure. The data acquisition sub-module and the data processing sub-module of the system software module run in different threads respectively, so as to avoid waiting for the execution of the data acquisition sub-module....

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Abstract

The invention provides a wind power converter monitoring system. A front-end sensor module is used for converting voltage, current and temperature signals into electric signals; a signal conditioning module is used for conditioning the signals which are output by the front-end sensor module, and sampling, amplifying and filtering a sensor signal which is output by current; a virtual instrument data acquisition module is used for performing analog-digital sampling on the voltage signal which is output by the signal conditioning module, and is in data communication with a personal computer (PC) through a virtual instrument bus; and a system software module is used for receiving data which are uploaded by the virtual instrument data acquisition module, displaying and storing the data, and providing a data analysis function. The wind power converter monitoring system is high in data throughput, detection points of the converter monitoring system can cover all branch circuits for high-power parallel converter topologies, the data can be displayed and stored, the data analysis function is provided, a monitoring function is expanded, and the monitoring system is quite convenient to assemble and disassemble.

Description

technical field [0001] The present invention relates to the technical field of wind power generation, in particular to a wind power converter monitoring system. Background technique [0002] Wind power converters can optimize the operation of wind power generation systems, realize variable speed and constant frequency power generation within a wide wind speed range, improve fan efficiency and transmission chain working conditions, reduce generator losses, improve operating efficiency, and increase wind energy utilization. [0003] At present, wind power converter monitoring does not include the sensor part and signal conditioning part of the monitoring system, nor does it provide the types of monitoring signals suitable for converters and the technical solutions for corresponding sensors and conditioning modules. Most of the monitoring data communication uses serial port, parallel port and other communication methods, the data throughput is small, the transmission speed is l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J13/00
Inventor 陈昭宇郭抒张建文
Owner SHANGHAI JIAODA INTELLECTUAL PORPERTY MANAGEMENT CO LTD
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