CN103389670A - Data acquisition and power monitoring device for transformer station - Google Patents

Data acquisition and power monitoring device for transformer station Download PDF

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Publication number
CN103389670A
CN103389670A CN2013103280739A CN201310328073A CN103389670A CN 103389670 A CN103389670 A CN 103389670A CN 2013103280739 A CN2013103280739 A CN 2013103280739A CN 201310328073 A CN201310328073 A CN 201310328073A CN 103389670 A CN103389670 A CN 103389670A
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CN
China
Prior art keywords
circuit
data acquisition
fpga
signal
transformer station
Prior art date
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CN2013103280739A
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Chinese (zh)
Inventor
陈代明
蒋显兵
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成都电业局双流供电局
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Application filed by 成都电业局双流供电局 filed Critical 成都电业局双流供电局
Priority to CN2013103280739A priority Critical patent/CN103389670A/en
Publication of CN103389670A publication Critical patent/CN103389670A/en

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Abstract

The invention discloses a data acquisition and power monitoring device for a transformer station, which comprises a signal conditioning circuit, a data acquisition circuit, and an FPGA (Field Programmable Gate Array) and peripheral circuit, wherein the signal conditioning circuit is connected with an input end of a power monitoring signal, and used for preprocessing an analog signal after receiving the power monitoring signal; the data acquisition circuit converts the analog signal into a digital signal after reading the analog signal preprocessed by the signal conditioning circuit; and the FPGA and peripheral circuit acquires, stores or correspondingly preprocesses the digital signal, and reports the digital signal to a computer. The data acquisition and power monitoring device adopts a USB (Universal Serial Bus) interface, so that a data transmission rate is increased, and an FPGA allows data storage and preprocessing to be more convenient and flexible, so that the device has higher applicability in a power system.

Description

The data acquisition and the electric force monitoring apparatus that are used for transformer station
 
Technical field
The present invention relates to the power control technology field, be specifically related to a kind of data acquisition for transformer station and electric force monitoring apparatus.
 
Background technology
Along with the development of Power System and its Automation, increasing power system device need to adopt Real Time Monitoring and data acquisition, thereby guarantees that power system device can safe and reliablely move.Power monitoring and data acquisition system (DAS) are requisite equipment in the modern power systems automatization system, it can carry out monitoring and controlling to Operation of Electric Systems equipment, to realize the various functions such as data acquisition, equipment control, measurement and various types of signal warning.Therefore, the research of power monitoring and data acquisition system (DAS) had important practical significance.
 
Summary of the invention
The present invention has overcome the deficiencies in the prior art, provides a kind of data storage and pre-service the more convenient and flexible data acquisition and the electric force monitoring apparatus that are used for transformer station.
Consider the problems referred to above of prior art, according to an aspect disclosed by the invention, the present invention by the following technical solutions:
A kind of data acquisition for transformer station and electric force monitoring apparatus, comprise signal conditioning circuit, data acquisition circuit and FPGA and peripheral circuit thereof; Wherein,
Described signal conditioning circuit is connected with the power monitoring signal input part, is used for the pre-service of simulating signal after receiving the power monitoring signal;
Described data acquisition circuit is digital signal with analog signal conversion after reading described signal conditioning circuit pre-service simulating signal;
Described FPGA and peripheral circuit thereof are stored or corresponding pre-service after gathering digital signal, and report computing machine.
In order to realize better the present invention, further technical scheme is:
According to one embodiment of present invention, also comprise usb circuit, described FPGA and peripheral circuit thereof by this usb circuit with information reporting to computing machine.
According to one embodiment of present invention, described usb circuit adopts the CY7C68013 chip.
According to one embodiment of present invention, described signal conditioning circuit adopts ADT1-1.
According to one embodiment of present invention, described data acquisition circuit comprises A/D converter and clock circuit.
According to one embodiment of present invention, described A/D converter adopts AD9238.
According to one embodiment of present invention, described FPGA and peripheral circuit thereof comprise FPGA and EPROM.
According to one embodiment of present invention, described FPGA adopts the Cyclone Series FPGA.
The present invention can also be:
According to one embodiment of present invention, also comprise the power circuit that is connected with FPGA and peripheral circuit thereof.
According to one embodiment of present invention, described power circuit adopts LT1764-3.3.
Compared with prior art, one of beneficial effect of the present invention is:
Data acquisition for transformer station of the present invention and electric force monitoring apparatus, (1) utilize AD9238 to complete power monitoring and data acquisition, data after collection are directly delivered in FPGA, power monitoring and data acquisition system adopted USB interface, improved data transmission rate, the employing of FPGA simultaneously makes the data storage more convenient and flexible with pre-service, so this system has stronger applicability in electric system;
(2) signal conditioning circuit adopts ADT1-1, and this device is the single-ended transfer difference device, uses this device can eliminate interference;
(3) adopt the storage of FPGA data and pre-service can increase system flexibility, have stronger dirigibility; FPGA and peripheral circuit thereof consist of FPGA and EPROM, have miniaturization, low-power consumption, able to programme, digitizing and fast, convenient, practical characteristics, adopt simultaneously EPROM to carry out the data storage, prevent the rear information dropout of FPGA outage, coordinate simultaneously clock circuit can improve the stability of circuit.
 
Description of drawings
For clearer explanation present specification embodiment or technical scheme of the prior art, below will the accompanying drawing of required use in the description of embodiment or prior art be briefly described, apparently, the accompanying drawing that the following describes is only the reference to some embodiment in present specification, for those skilled in the art,, in the situation that do not pay creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 shows according to an embodiment of the invention for the data acquisition of transformer station and the block diagram of electric force monitoring apparatus.
 
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment 1
Fig. 1 shows according to an embodiment of the invention for the data acquisition of transformer station and the block diagram of electric force monitoring apparatus.As shown in Figure 1 a kind of data acquisition for transformer station and electric force monitoring apparatus, comprise signal conditioning circuit 101, data acquisition circuit 102, FPGA and peripheral circuit 103 thereof, usb circuit 105.
Signal conditioning circuit 101 is connected with the power monitoring signal input part, is used for the pre-service of simulating signal after receiving the power monitoring signal.
Data acquisition circuit 102 is digital signal with analog signal conversion after reading described signal conditioning circuit 101 pre-service simulating signals, and this data acquisition circuit can consist of A/D converter and clock circuit.
FPGA and peripheral circuit 103 thereof are stored or corresponding pre-service after gathering digital signal, and report computing machine, and FPGA and peripheral circuit thereof can comprise FPGA and EPROM.
Usb circuit 105 can adopt the CY7C68013 chip, described FPGA and peripheral circuit thereof by this usb circuit 105 with information reporting to computing machine, as PC, industrial computer etc.In one embodiment of the invention, particularly, adopt USB interface as communication mode, utilize simultaneously AD9238 to complete power monitoring and data acquisition, the data after collection are directly delivered in FPGA.Wherein USB interface directly is connected with FPGA, and the data after collection both can have been kept in FPGA, also can directly through USB interface, send in PC, also can report PC after corresponding pre-service is done in FPGA inside for the data after gathering simultaneously.Signal conditioning circuit 101 is connected with the power monitoring signal input part, complete the pre-service of simulating signal after receiving the power monitoring signal, be digital signal with analog signal conversion after data acquisition circuit 102 read signal modulate circuit pre-service simulating signals, FPGA extremely peripheral circuit 103 stores or corresponding pre-service after gathering digital signal, by usb circuit 105, reports PC.
Power circuit 104 can be connected with FPGA and peripheral circuit 103 thereof.
 
Embodiment 2
A kind of preferred structure of trunking communication interference monitoring instrument is disclosed in the present embodiment, described signal conditioning circuit is mainly to design for the A/D converter performance requirement, comprise analog input signal voltage, signal input form etc., because A/D converter in native system needs the differential signal input, therefore signal condition partly need to adopt the single-ended transfer difference device, therefore this device adopts ADT1-1.
Described data acquisition circuit consists of A/D converter and clock circuit, A/D converter adopts AD9238, this device is a binary channels, 12bit, 20/40/65 Msamples-1 analog to digital converter, sampling rate is selected 40Msa-mples-1, can provide and the same excellent dynamic property of single channel A/D converter, but than using 2 single channel A/D converters to have better cross talk resistance energy.This device adopts the difference input form, analog input scope Vp-p=1~2V, and the output data of AD9238 are the compatible level of TTL/CMOS, coordinate simultaneously clock circuit can improve the stability of circuit.
Described FPGA and peripheral circuit thereof consist of FPGA and EPROM, FPGA adopts the Cyclone Series FPGA, this device is a kind of by the requirement of user according to designed digital circuitry, the high density special digital integrated circuit that configures voluntarily at the scene, defines, it have miniaturization, low-power consumption, able to programme, digitizing and fast, convenient, practical characteristics, adopt simultaneously EPROM to carry out the data storage, prevent the rear information dropout of FPGA outage.
Described usb circuit adopts the CY7C68013 chip, this chip is the integrated microcontroller of the USB2.0 of Cypress company, this chip internal has enhancement mode 8051 kernels, its standard and 8051 compatibilities, simultaneously, inner integrated 1 usb data transceiver, 38 I/O mouths, 1 intelligent USB serial interface engine, 16 bit address lines, 4kB BFIFO etc.
System power supply can adopt the 5V power supply, and the devices such as FPGA and A/D converter adopt the 3.3V power supply, therefore adopt power module to realize the voltage transitions of 5~3.3V.So power circuit adopts LT1764-3.3, this chip can provide the supply current of 1 A, can meet system requirements.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment that between each embodiment, identical similar part cross-references gets final product.
" embodiment " who speaks of in this manual, " another embodiment ", " embodiment ", etc., refer to specific features, structure or the characteristics described in conjunction with this embodiment and be included at least one embodiment that the application's generality describes.A plurality of local appearance statement of the same race is not necessarily to refer to same embodiment in instructions.Furthermore, while in conjunction with arbitrary embodiment, describing a specific features, structure or characteristics, what advocate is to realize that in conjunction with other embodiment this feature, structure or characteristics also fall within the scope of the invention.
Although invention has been described with reference to a plurality of explanatory embodiment of the present invention here, but, should be appreciated that, those skilled in the art can design a lot of other modification and embodiments, and these are revised and within embodiment will drop on the disclosed principle scope and spirit of the application.More particularly, in the scope of, accompanying drawing open in the application and claim, can carry out multiple modification and improvement to building block and/or the layout of subject combination layout.Except modification that building block and/or layout are carried out with improving, to those skilled in the art, other purposes will be also obvious.

Claims (10)

1. data acquisition and an electric force monitoring apparatus that is used for transformer station, is characterized in that, comprises signal conditioning circuit, data acquisition circuit and FPGA and peripheral circuit thereof; Wherein,
Described signal conditioning circuit is connected with the power monitoring signal input part, is used for the pre-service of simulating signal after receiving the power monitoring signal;
Described data acquisition circuit is digital signal with analog signal conversion after reading described signal conditioning circuit pre-service simulating signal;
Described FPGA and peripheral circuit thereof are stored or corresponding pre-service after gathering digital signal, and report computing machine.
2. the data acquisition for transformer station according to claim 1 and electric force monitoring apparatus, is characterized in that, also comprises usb circuit, described FPGA and peripheral circuit thereof by this usb circuit with information reporting to computing machine.
3. the data acquisition for transformer station according to claim 2 and electric force monitoring apparatus, is characterized in that, described usb circuit adopts the CY7C68013 chip.
4. the data acquisition for transformer station according to claim 1 and electric force monitoring apparatus, is characterized in that, described signal conditioning circuit adopts ADT1-1.
5. the data acquisition for transformer station according to claim 1 and electric force monitoring apparatus, is characterized in that, described data acquisition circuit comprises A/D converter and clock circuit.
6. the data acquisition for transformer station according to claim 5 and electric force monitoring apparatus, is characterized in that, described A/D converter adopts AD9238.
7. the data acquisition for transformer station according to claim 1 and electric force monitoring apparatus, is characterized in that, described FPGA and peripheral circuit thereof comprise FPGA and EPROM.
8. the data acquisition for transformer station according to claim 7 and electric force monitoring apparatus, is characterized in that, described FPGA adopts the Cyclone Series FPGA.
9. the described data acquisition for transformer station of according to claim 1 to 8 any one and electric force monitoring apparatus, is characterized in that, also comprises the power circuit that is connected with FPGA and peripheral circuit thereof.
10. the data acquisition for transformer station according to claim 9 and electric force monitoring apparatus, is characterized in that, described power circuit adopts LT1764-3.3.
CN2013103280739A 2013-07-31 2013-07-31 Data acquisition and power monitoring device for transformer station CN103389670A (en)

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CN106843023A (en) * 2015-12-03 2017-06-13 国网智能电网研究院 A kind of electric power data acquisition system based on FPGA

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