CN109342808A - Generator intelligent power pick-up device - Google Patents
Generator intelligent power pick-up device Download PDFInfo
- Publication number
- CN109342808A CN109342808A CN201811318798.9A CN201811318798A CN109342808A CN 109342808 A CN109342808 A CN 109342808A CN 201811318798 A CN201811318798 A CN 201811318798A CN 109342808 A CN109342808 A CN 109342808A
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- China
- Prior art keywords
- intelligent power
- card processor
- power pick
- generator
- output
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R21/00—Arrangements for measuring electric power or power factor
- G01R21/133—Arrangements for measuring electric power or power factor by using digital technique
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
The invention discloses a kind of generator intelligent power pick-up devices, for being adapted to the sample waveform adjustment of generator with it, data calculate filtering, output Analog control and quick alarm output, and the generator intelligent power pick-up device includes the consistent signal conditioning circuit of quantity of plurality of voltages current input module and voltage and current input module, multi-channel data acquisition module, samples Card processor and display Card processor and analog output unit and alarm output card.Generator intelligent power pick-up device disclosed by the invention; pass through the multiple while voltage and current input module comprising voltage sensor and current sensor of ingenious setting; realize that double CT, double PT are online; sampling while can protect CT electric current and measurement CT electric current realizes that sample waveform adjustment, data calculate filtering, output Analog control and quick alarm output.
Description
Technical field
The invention belongs to intelligent transducer technical fields, and in particular to a kind of generator intelligent power pick-up device.
Background technique
Currently, the generator electrical measurement of intelligent is all based on digital using Fourier algorithm detection frequency
Sampling, discrete Fourier transform.It is calculated using asynchronous fixed frequency sampling, each voltage, electric current, power, phase calculation amount are big, calculate
Time is long；And synchronized tracking is used to sample, since sample frequency often has error with actual frequency, it cannot be guaranteed that each voltameter
The precision of calculation.In prior art, the sampling for determining frequency using asynchronous calculates frequency, then desynchronizes and track each voltage and current and adopt
Sample, so both available accurate frequencies, can also acquire the electricity of complete cycle, carry out electricity rapidly using integral algorithm
It calculates, guarantees the real-time of device.
Summary of the invention
The present invention is directed to the situation of the prior art, overcomes drawbacks described above, provides a kind of generator intelligent power pick-up device.
The present invention uses following technical scheme, and the generator intelligent power pick-up device is used to be adapted to generator with it
Sample waveform adjustment, data calculate filtering, output Analog control and quick alarm output, the generator intelligent power pick-up
Device includes the consistent signal conditioning circuit of quantity of plurality of voltages current input module and voltage and current input module, multi-pass
Track data acquisition module, sampling Card processor and display Card processor and analog output unit and alarm output card, in which:
Each voltage and current input module passes through unique corresponding signal conditioning circuit access multichannel number independently of each other
According to the input terminal of acquisition module；
The input terminal of the output end access sampling Card processor of the multi-channel data acquisition module；
The sampling Card processor and display Card processor foundation are bi-directionally connected communication, the output of the sampling Card processor
End is independently accessing analog output unit and alarm output card.
According to the above technical scheme, the output end of the sampling Card processor establishes two-way company with extraction standby port simultaneously
Connect news.
According to the above technical scheme, input terminal of the output end of the sampling Card processor to multi-channel data acquisition module
Export the fixed frequency division parameter 3 of CPLD dynamic frequency division parameter 1, CPLD dynamic frequency division parameter 2 and PWM.
According to the above technical scheme, the output end of the display Card processor is accessed to upper communication interface.
According to the above technical scheme, the output end of the display Card processor establishes two-way company with human-computer interface module simultaneously
News are connected, the human-computer interface module includes liquid crystal cells and push-button unit.
According to the above technical scheme, the liquid crystal cells use 128*64 lattice lcd.
According to the above technical scheme, the multi-channel data acquisition module uses AD7606 circuit.
According to the above technical scheme, the sampling Card processor uses STM32F407IGT.
According to the above technical scheme, the display Card processor uses STM32F207ZGT.
According to the above technical scheme, each voltage and current input module includes an at least voltage sensor and at least one electricity
Flow sensor.
Generator intelligent power pick-up device disclosed by the invention, the beneficial effect is that, it is multiple same by ingenious setting
When the voltage and current input module comprising voltage sensor and current sensor, realize that double CT, double PT are online, can protect CT electricity
It is sampled while stream and measurement CT electric current, realizes that sample waveform adjustment, data calculate filtering, output Analog control.Meanwhile institute
State generator intelligent power pick-up device may also be in moment surge suppression working condition, transient state quick response working condition or
Quick response and surge suppression take into account working condition, can filter out the spike interference of Microsecond grade again in guarantee transient state capability of fast response
Signal.
Detailed description of the invention
Fig. 1 is the system block diagram of the preferred embodiment of the present invention.
Fig. 2 is the structural schematic diagram of the preferred embodiment of the present invention.
Specific embodiment
The invention discloses a kind of generator intelligent power pick-up devices, below with reference to preferred embodiment, to of the invention
Specific embodiment is further described.
Referring to Figure 1 of the drawings and Fig. 2, Fig. 1 show the system composition of the generator intelligent power pick-up device, Fig. 2
Show the main structure of the generator intelligent power pick-up device.
Preferably, the generator intelligent power pick-up device is used to be adapted to the sample waveform adjustment of generator, number with it
According to filtering, output Analog control and quick alarm output is calculated, the generator intelligent power pick-up device includes Multi-path electricity
Current voltage input module, with the consistent signal conditioning circuit of quantity of voltage and current input module, multi-channel data acquisition module,
Sample Card processor and display Card processor and analog output unit and alarm output card, in which:
Each voltage and current input module passes through unique corresponding signal conditioning circuit access multichannel number independently of each other
According to the input terminal of acquisition module；
The input terminal of the output end access sampling Card processor of the multi-channel data acquisition module；
The sampling Card processor and display Card processor foundation are bi-directionally connected communication, the output of the sampling Card processor
End is independently accessing analog output unit and alarm output card.
Further, the output end of the sampling Card processor is bi-directionally connected communication with extraction standby port foundation simultaneously.
Further, the output end of the sampling Card processor exports CPLD to the input terminal of multi-channel data acquisition module
The fixed frequency division parameter 3 of dynamic frequency division parameter 1, CPLD dynamic frequency division parameter 2 and PWM.
Further, the output end of the display Card processor is accessed to upper communication interface.
Further, the output end of the display Card processor is bi-directionally connected communication with human-computer interface module foundation simultaneously,
The human-computer interface module includes liquid crystal cells and push-button unit.
Wherein, the multi-channel data acquisition module preferably uses AD7606 circuit.
Wherein, the sampling Card processor preferably uses STM32F407IGT.
Wherein, the display Card processor preferably uses STM32F207ZGT.
Specific embodiment one (referring to Figure 1 of the drawings).
Preferably, the generator intelligent power pick-up device is used to be adapted to the sample waveform adjustment of generator, number with it
According to filtering, output Analog control and quick alarm output is calculated, the generator intelligent power pick-up device includes the first He
Second voltage current input module, the first and second signal conditioning circuits, multi-channel data acquisition module, sampling Card processor and
Show Card processor and analog output unit and alarm output card, in which:
First voltage current input module accesses the input of multi-channel data acquisition module by the first signal conditioning circuit
End；
Second voltage current input module accesses the input of multi-channel data acquisition module by second signal conditioning circuit
End；
The input terminal of the output end access sampling Card processor of the multi-channel data acquisition module；
The sampling Card processor and display Card processor foundation are bi-directionally connected communication, the output of the sampling Card processor
End is independently accessing analog output unit and alarm output card.
Further, the output end of the sampling Card processor is bi-directionally connected communication with extraction standby port foundation simultaneously.
Further, the output end of the sampling Card processor exports CPLD to the input terminal of multi-channel data acquisition module
The fixed frequency division parameter 3 of dynamic frequency division parameter 1, CPLD dynamic frequency division parameter 2 and PWM.
Further, the output end of the display Card processor is accessed to upper communication interface.
Further, the output end of the display Card processor is bi-directionally connected communication with human-computer interface module foundation simultaneously,
The human-computer interface module includes liquid crystal cells and push-button unit.
Wherein, the multi-channel data acquisition module preferably uses AD7606 circuit.
Wherein, the sampling Card processor preferably uses STM32F407IGT.
Wherein, the display Card processor preferably uses STM32F207ZGT.
Specific embodiment two.
Preferably, the generator intelligent power pick-up device is used to be adapted to the sample waveform adjustment of generator, number with it
According to calculating filtering, output Analog control and quick alarm output, the generator intelligent power pick-up device include first to
Tertiary voltage current input module, first to third signal conditioning circuit, multi-channel data acquisition module, sampling Card processor and
Show Card processor and analog output unit and alarm output card, in which:
First passes through unique corresponding first to third signal condition to tertiary voltage current input module independently of each other
The input terminal of circuit access multi-channel data acquisition module；
The input terminal of the output end access sampling Card processor of the multi-channel data acquisition module；
The sampling Card processor and display Card processor foundation are bi-directionally connected communication, the output of the sampling Card processor
End is independently accessing analog output unit and alarm output card.
Further, the output end of the sampling Card processor is bi-directionally connected communication with extraction standby port foundation simultaneously.
Further, the output end of the sampling Card processor exports CPLD to the input terminal of multi-channel data acquisition module
The fixed frequency division parameter 3 of dynamic frequency division parameter 1, CPLD dynamic frequency division parameter 2 and PWM.
Further, the output end of the display Card processor is accessed to upper communication interface.
Further, the output end of the display Card processor is bi-directionally connected communication with human-computer interface module foundation simultaneously,
The human-computer interface module includes liquid crystal cells and push-button unit.
Wherein, the multi-channel data acquisition module preferably uses AD7606 circuit.
Wherein, the sampling Card processor preferably uses STM32F407IGT.
Wherein, the display Card processor preferably uses STM32F207ZGT.
According to above preferred embodiment (and its first and second specific embodiments), the generator intelligent power pick-up
The technical essential of device is summarized as follows.
1. there is moment surge suppression working condition or transient state quick response working condition (quick response mode), it can also work
Make to take into account working condition in quick response and surge suppression.In other words, guarantee that transient state capability of fast response can filter out microsecond again
The spike interference signal of grade.It is provided simultaneously with dual power supply, double CT functions, double PT functions.
2. pair protection CT electric current and measurement CT electric current sample simultaneously, by electric current seamless switching technique, can effectively avoid because
Grade current transformer electric current is excessive or aperiodic component and is saturated for measurement, cause pick-up device can not proper output power shadow
It rings.In addition, device can automatically switch to that group CT and PT not broken, solve conventional power when CT, PT broken string occurs
Transmitter the problem of power is distorted after CT, PT broken string occurs, and has break alarm function.
3. work is in quick response mode, all wave powers send 4-20mA to export immediately, and the response time is preferably smaller than 40
Millisecond.
4. have the function of logout and recording, the various situations that can occur in complete documentation device operational process are convenient
Ex-post analysis.
Referring to table one appended by this specification, one column table of generator intelligent power pick-up device technical parameter, the power generation
The liquid crystal cells of the human-computer interface module of machine intelligent power pick-up device preferably use 128*64 lattice lcd.
Referring to table one appended by this specification, generator intelligent power pick-up device technical parameter list, the power generation
Machine intelligent power pick-up device preferably uses RS485 interface to upper communication interface.
Referring to table one appended by this specification, generator intelligent power pick-up device technical parameter list, the power generation
The output signal of the analog output unit of machine intelligent power pick-up device includes 8 road analog outputs.
Referring to table one appended by this specification, generator intelligent power pick-up device technical parameter list, the power generation
Machine intelligent power pick-up device further includes power module, and the power module to electrical appliances such as above-mentioned sampling card processors for mentioning
For working power.
Referring to table one appended by this specification, generator intelligent power pick-up device technical parameter list, the power generation
Each voltage and current input module of machine intelligent power pick-up device includes that an at least voltage sensor and an at least electric current pass
Sensor.
It is noted that according to above preferred embodiment (and its first and second specific embodiments), the power generation
The functional characteristics of machine intelligent power pick-up device is summarized as follows.
1. major function: primary frequency function；Double PT, double CT functions；Quick pick-up output function；Quickly protection switching function
Energy；Warning output function；Communication function；System clock and time adjustment function；Event recording function；Recording function；A variety of filtering moulds
Formula；
2. main application: by acquisition power generator set end voltage, electric current, active, voltage, electric current, frequency etc. are calculated,
Respectively with 4-20mA (default) output, DEH system is automatically adjusted for generator and DCS system uses.
3. technical characterstic: using digital sample, Fourier's calculating frequency and power, improving signal output real-time and done with anti-
Immunity；Twin voltage current power anomaly monitoring effectively improves the stability of device output；Simultaneously to protection CT and measurement CT electric current
Sampling can effectively avoid due to measuring excessive grade current transformer electric current or aperiodic component by electric current seamless switching technique
The full influence for leading to not export correct signal；Double PT, double CT functions, 1 group of PT or CT can be seamlessly switched to when breaking not to break
That 1 group of PT or CT；Perfect logout and recording is convenient for customer analysis.
It is worth noting that according to above preferred embodiment (and its first and second specific embodiments), the power generation
The primary frequency modulation measurement of synchronous asynchronous sample mode combination may be implemented in machine intelligent power pick-up device.
Wherein, by the way of asynchronous-sampling voltage and current, using Fourier transformation accurate frequency measurement, conventional survey is avoided
Harmonic component of the frequency method in line fault influences, and in 49.8Hz~50.2Hz frequency range, measurement accuracy be can achieve
0.2% grade.
Wherein, after obtaining frequency in a manner of accurate asynchronous-sampling, the sample frequency of other electricity is quickly changed, is carried out
Complete cycle calculates electricity.It can be concluded that measurement accuracy reaches the active and reactive equal electricity of 0.2% grade.
For a person skilled in the art, technical solution documented by foregoing embodiments can still be repaired
Change or equivalent replacement of some of the technical features, it is all within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should be included in protection scope of the present invention.
One generator intelligent power pick-up device technical parameter of table, one column table
Claims (10)
1. a kind of generator intelligent power pick-up device, which is characterized in that for be adapted to it generator sample waveform adjust,
Data calculate filtering, output Analog control and quick alarm output, and the generator intelligent power pick-up device includes multichannel
Voltage and current input module, the consistent signal conditioning circuit of quantity, multi-channel data acquisition mould with voltage and current input module
Block, sampling Card processor and display Card processor and analog output unit and alarm output card, in which:
Each voltage and current input module passes through unique corresponding signal conditioning circuit access multi-channel data independently of each other and adopts
Collect the input terminal of module；
The input terminal of the output end access sampling Card processor of the multi-channel data acquisition module；
The sampling Card processor and display Card processor foundation are bi-directionally connected communication, and the output end of the sampling Card processor is only
On the spot access analog output unit and alarm output card.
2. generator intelligent power pick-up device according to claim 1, which is characterized in that the sampling Card processor
Output end is bi-directionally connected communication with extraction standby port foundation simultaneously.
3. according to claim 1 or in 2, generator intelligent power pick-up device, feature described in any claim exist
In, it is described sampling Card processor output end to the input terminal of multi-channel data acquisition module output CPLD dynamic frequency division parameter 1,
CPLD dynamic frequency division parameter 2 and the fixed frequency division parameter 3 of PWM.
4. generator intelligent power pick-up device according to claim 1, which is characterized in that the display Card processor
Output end is accessed to upper communication interface.
5. according to claim 1 or in 4, generator intelligent power pick-up device, feature described in any claim exist
In the output end of the display Card processor is bi-directionally connected communication, the man-machine interface mould with human-computer interface module foundation simultaneously
Block includes liquid crystal cells and push-button unit.
6. generator intelligent power pick-up device according to claim 5, which is characterized in that the liquid crystal cells use
128*64 lattice lcd.
7. generator intelligent power pick-up device according to claim 1, which is characterized in that the multi-channel data acquisition
Module uses AD7606 circuit.
8. generator intelligent power pick-up device according to claim 1, which is characterized in that the sampling Card processor is adopted
Use STM32F407IGT.
9. generator intelligent power pick-up device according to claim 1, which is characterized in that the display Card processor is adopted
Use STM32F207ZGT.
10. generator intelligent power pick-up device according to claim 1, which is characterized in that each voltage and current input
Module includes an at least voltage sensor and an at least current sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811318798.9A CN109342808A (en) | 2018-11-07 | 2018-11-07 | Generator intelligent power pick-up device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811318798.9A CN109342808A (en) | 2018-11-07 | 2018-11-07 | Generator intelligent power pick-up device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109342808A true CN109342808A (en) | 2019-02-15 |
Family
ID=65314374
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811318798.9A Pending CN109342808A (en) | 2018-11-07 | 2018-11-07 | Generator intelligent power pick-up device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110646666A (en) * | 2019-09-20 | 2020-01-03 | 浙江浙能嘉华发电有限公司 | High-precision network frequency homologous direct mining device and method thereof |
| CN111337828A (en) * | 2020-03-17 | 2020-06-26 | 中国能源建设集团广东省电力设计研究院有限公司 | Power generation of power plant becomes group and high changer electrical measurement system who is equipped with |
| CN112083249A (en) * | 2020-09-17 | 2020-12-15 | 浙江涵普电力科技有限公司 | Intelligent detection device meeting steady-state and transient-state tests and detection method thereof |
| CN114498765A (en) * | 2021-11-01 | 2022-05-13 | 华能济宁运河发电有限公司 | Method and system for controlling power transmitter of generator |
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| CN114498765A (en) * | 2021-11-01 | 2022-05-13 | 华能济宁运河发电有限公司 | Method and system for controlling power transmitter of generator |
| CN114498765B (en) * | 2021-11-01 | 2024-01-26 | 华能济宁运河发电有限公司 | Control method and system for power transmitter of generator |
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Inventor after: Wang Jianmin Inventor after: Lu Qiguang Inventor after: Cao Da Inventor after: Zhang Yi Inventor after: Qian Yebing Inventor after: Wang Shihui Inventor after: Lu Fangping Inventor before: Lu Qiguang Inventor before: Cao Da Inventor before: Zhang Yi Inventor before: Qian Yebing Inventor before: Wang Shihui Inventor before: Lu Fangping |
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Application publication date: 20190215 |