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CN108918924A - Complicated Periodic wave voltage simulation generator based on signal times die pressing type - Google Patents

Complicated Periodic wave voltage simulation generator based on signal times die pressing type Download PDF

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Publication number
CN108918924A
CN108918924A CN201811007925.3A CN201811007925A CN108918924A CN 108918924 A CN108918924 A CN 108918924A CN 201811007925 A CN201811007925 A CN 201811007925A CN 108918924 A CN108918924 A CN 108918924A
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China
Prior art keywords
waveform
periodic wave
voltage
unit
module
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CN201811007925.3A
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Chinese (zh)
Inventor
尹毅
戴畅
李凤丽
许嘉轩
吴建东
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Shanghai Jiao Tong University
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Shanghai Jiao Tong University
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Priority to CN201811007925.3A priority Critical patent/CN108918924A/en
Publication of CN108918924A publication Critical patent/CN108918924A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/28Provision in measuring instruments for reference values, e.g. standard voltage, standard waveform
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

A kind of Complicated Periodic wave voltage simulation generator based on signal times die pressing type, including:Waveform analysis module, Waveform composition module and waveform modelling output module, wherein:Waveform analysis module analyzes the swift waveform of operating condition Complicated Periodic wave voltage marking wave, obtain the proportional amount of direct current, fundamental wave and harmonic component under operating condition electric field, small signal of the Waveform composition module by function generator synthesis comprising certain components, proportional amount, for waveform modelling output module by amplifying to small signal multiplication of voltage, Fast simulation exports Complicated Periodic wave operating condition polarized electric field.The present invention has quickly analysis, synthesis, analog functuion.

Description

Complicated Periodic wave voltage simulation generator based on signal times die pressing type
Technical field
The present invention relates to a kind of technology of transformer detection field, specifically a kind of answering based on signal times die pressing type Miscellaneous period wave voltage simulation generator.
Background technique
The operating condition electric field in converter power transformer includes all multicomponents such as exchange, harmonic wave, DC component at present, existing Space charge detection method lacks the actual operating mode that reliable, stable polarisation voltage source carrys out analogue transformer, correlative study The polarisation voltage source of middle use is only capable of output DC voltage and simple 50Hz power frequency sinusoidal voltage.
In addition, due to the complexity of converter power transformer operating condition, DC component of the operating condition voltage under different conditions and The ratio of harmonic component can change, and how quickly determine the proportional components of each component under different conditions, and accurately synthesize, Operating condition voltage waveform under simulation output corresponding proportion, lacks effective implementation method and technological means at present.
Summary of the invention
The present invention is only capable of the office of output DC voltage and simple 50Hz power frequency sinusoidal voltage for existing polarisation voltage source Limit, proposes a kind of Complicated Periodic wave voltage simulation generator based on signal times die pressing type, has quickly analysis, synthesis, mould Quasi- function.
The present invention is achieved by the following technical solutions:
The present invention relates to a kind of Complicated Periodic wave voltage simulation generator based on signal times die pressing type, including:Waveform Analysis module, Waveform composition module and waveform modelling output module, wherein:Waveform analysis module is to operating condition Complicated Periodic wave voltage The swift waveform of marking wave is analyzed, and the proportional amount of direct current, fundamental wave and harmonic component under operating condition electric field, Waveform composition module are obtained Small signal by function generator synthesis comprising certain components, proportional amount, waveform modelling output module pass through to small signal Multiplication of voltage amplification, Fast simulation export Complicated Periodic wave operating condition polarized electric field.
The waveform analysis module includes:For importing the data of practical converter power transformer operating condition marking wave data Input terminal imports in working state recording wave in quick Fu of FFT of the content ratio of direct current, fundamental wave and each harmonic for calculating analysis Leaf transformation unit and the parameter output unit that the waveform analysis parameter obtained is calculated for exporting fft analysis.
The Waveform composition module includes:Function edit cell, for the digital signal files of specific waveforms to be imported The data transmission unit and function generator of the memory of function generator, wherein:Function edit cell is according to waveform analysis unit The component type and content ratio of middle extraction, generate the normalization digital signal file of specific waveforms needed for studying, and function occurs Device reads the specific waveforms in memory and normalizes digital signal file, and exports the required specific waveforms of research.
The specific waveforms normalization digital signal file refers to:Each harmonic component that Fast Fourier Transform (FFT) is obtained It is overlapped by frequency, and scaled down or amplification are so that the digital signal file that maximum amplitude is 1.
The synthesis exports specific algorithm:According to Calculation results are stated, each frequency component data is pressed into width point by point Value is overlapped
The waveform modelling output module includes:Small signal voltage doubling unit and output protection unit, wherein:Small signal times Unit is pressed to amplify the small signal proportion of specific waveforms of function generator synthesis output in Waveform composition unit, output protection unit The input terminal of small signal voltage doubling unit is automatically cut off in external output loop puncture short to stop High voltage output.
The ratio enlargement is specifically realized using high-voltage amplifier.
Technical effect
Compared with prior art, technical effect of the invention is:Realize that quickly analysis operating condition is real simultaneously in set of system Border wave recording or emulation gained waveform, and synthesize, simulate operating condition waveform, screen the certain components and combinations thereof in operating condition waveform The function of being exported.
Detailed description of the invention
Fig. 1 is the system structure diagram of Complicated Periodic wave voltage simulative generator;
Fig. 2 is the ratio schematic diagram of each harmonic component virtual value and DC component obtained by FFT fast Fourier transform module;
Fig. 3 is the waveform diagram of waveform modelling output module output.
Specific embodiment
As shown in Figure 1, a kind of Complicated Periodic wave voltage simulation hair based on signal times die pressing type being related to for the present embodiment Generating apparatus, including:Waveform analysis module, Waveform composition module, waveform modelling output module.
It bears voltage to certain type ± 500Kv converter station winding I valve side major insulation under specific run operating condition to emulate, by institute It obtains data and waveform analysis module is imported by data input pin, analyzed it using FFT fast Fourier transform module, and Select sample range for 40 times or less harmonic waves, analysis result is as shown in Figure 2.It is obvious several humorous under the specific run operating condition Its ingredient of wave is:DC component 322kV, industrial frequency AC component virtual value 111.4kV, 3 subharmonic virtual value 39.7kV, 6 times humorous Wave virtual value 9.2Kv, 9 subharmonic virtual value 15.2Kv, 11 subharmonic virtual value 17.8kV, 13 subharmonic virtual value 11.5Kv. Parameter output module is transmitted to Waveform composition module for result is analyzed
In the Waveform composition module, the above-mentioned seven kinds of components of function editor module selection, which generate, normalizes file, then by Data transmission module is imported into the memory of function generator, and function generator normalizes number according to the specific waveforms in memory Signal file, specific waveforms needed for synthesis output research.
Small signal times die block in the waveform modelling output module closes function generator in Waveform composition module At 4000 times of specific waveforms low level signal amplification of output, output waveform such as Fig. 3.If external output loop puncture short, output Protective module will automatically cut off the input terminal of small signal times die block, to stop High voltage output.
In conclusion the Complicated Periodic wave voltage simulative generator of example according to the present invention, for high-tension apparatus in operating condition Under practical receiving voltage can accomplish more accurately to simulate.Furthermore this generator can be selected flexibly according to the needs of users Required harmonic wave is taken to study.
Above-mentioned specific implementation can by those skilled in the art under the premise of without departing substantially from the principle of the invention and objective with difference Mode carry out local directed complete set to it, protection scope of the present invention is subject to claims and not by above-mentioned specific implementation institute Limit, each implementation within its scope is by the constraint of the present invention.

Claims (7)

1.一种基于信号倍压模式的复杂周期波电压模拟发生装置,其特征在于,包括:波形分析模块、波形合成模块和波形模拟输出模块,其中:波形分析模块对工况复杂周期波电压记录波的快速波形分析,获得工况电场下直流、基波和谐波分量的比例含量,波形合成模块通过函数发生器合成包含特定分量、比例含量的小信号,波形模拟输出模块通过对小信号倍压放大,快速模拟输出复杂周期波工况极化电场。1. A complex periodic wave voltage simulation generating device based on signal voltage doubling mode, characterized in that it includes: a waveform analysis module, a waveform synthesis module and a waveform analog output module, wherein: the waveform analysis module records the complex periodic wave voltage of the working condition The rapid waveform analysis of waves can obtain the proportional content of DC, fundamental and harmonic components under the working condition electric field. The waveform synthesis module synthesizes small signals containing specific components and proportional content through the function generator. The waveform analog output module Voltage amplification, fast simulation and output of polarization electric field under complex periodic wave conditions. 2.根据权利要求1所述的复杂周期波电压模拟发生装置,其特征是,所述的波形分析模块包括:用于导入实际换流变压器运行工况记录波数据的数据输入端、用于计算分析导入工况记录波中直流、基波和各次谐波的含量比例的FFT快速傅里叶变换单元和用于导出FFT分析计算获得的波形分析参数的参数输出单元。2. The complex periodic wave voltage simulation generating device according to claim 1, characterized in that, the waveform analysis module includes: a data input terminal for importing actual converter transformer operation condition record wave data, for calculating The FFT fast Fourier transform unit for analyzing the content ratio of direct current, fundamental wave and each harmonic in the imported operating condition record wave and the parameter output unit for deriving the waveform analysis parameters obtained by FFT analysis and calculation. 3.根据权利要求1所述的复杂周期波电压模拟发生装置,其特征是,所述的波形合成模块包括:函数编辑单元、用于将对应波形的数字信号文件导入函数发生器的内存的数据传输单元和函数发生器,其中:函数编辑单元根据波形分析单元中提取的分量类型和含量比例生成对应波形的归一化数字信号文件,函数发生器读取内存中的对应波形归一化数字信号文件输出对应波形。3. complex periodic wave voltage simulation generation device according to claim 1, it is characterized in that, described waveform synthesis module comprises: function editing unit, the data that is used to import the digital signal file of corresponding waveform into the internal memory of function generator The transmission unit and the function generator, wherein: the function editing unit generates the normalized digital signal file of the corresponding waveform according to the component type and content ratio extracted from the waveform analysis unit, and the function generator reads the normalized digital signal of the corresponding waveform in the memory The file output corresponds to the waveform. 4.根据权利要求3所述的复杂周期波电压模拟发生装置,其特征是,所述的对应波形归一化数字信号文件是指:将快速傅里叶变换得到的各谐波分量按频率进行叠加,并等比例缩小或放大使得最大幅值为1的数字信号文件4. The complex periodic wave voltage simulation generating device according to claim 3, characterized in that, said corresponding waveform normalization digital signal file refers to: performing each harmonic component obtained by fast Fourier transform according to frequency Overlay, and proportionally reduce or enlarge the digital signal file with the maximum amplitude value of 1 5.根据权利要求3所述的复杂周期波电压模拟发生装置,其特征是,所述的函数发生器将各频率分量数据逐点按幅值进行叠加从而得到对应波形。5. The device for generating complex periodic wave voltage simulation according to claim 3, wherein the function generator superimposes the data of each frequency component point by point according to the amplitude to obtain the corresponding waveform. 6.根据权利要求1所述的复杂周期波电压模拟发生装置,其特征是,所述的波形模拟输出模块包括:小信号倍压单元和输出保护单元,其中:小信号倍压单元将波形合成单元中函数发生器合成输出的对应波形小信号比例放大,输出保护单元在外部输出回路击穿短路时自动切断小信号倍压单元的输入端以停止高压输出。6. The complex periodic wave voltage simulation generating device according to claim 1, wherein the waveform simulation output module comprises: a small signal voltage doubling unit and an output protection unit, wherein: the small signal voltage doubling unit synthesizes the waveform The corresponding small signal of the waveform synthesized by the function generator in the unit is proportionally amplified, and the output protection unit automatically cuts off the input of the small signal voltage doubler unit to stop the high voltage output when the external output circuit breaks down and short circuit. 7.根据权利要求6所述的复杂周期波电压模拟发生装置,其特征是,所述的比例放大,具体采用高压放大器实现。7. The device for generating complex periodic wave voltage simulation according to claim 6, characterized in that said proportional amplification is realized by a high-voltage amplifier.
CN201811007925.3A 2018-08-31 2018-08-31 Complicated Periodic wave voltage simulation generator based on signal times die pressing type Pending CN108918924A (en)

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