CN108153281B - It is a kind of that dual power supply is exchanged for the tester of throwing system based on the output of high voltage constant pressure source power amplifier - Google Patents
It is a kind of that dual power supply is exchanged for the tester of throwing system based on the output of high voltage constant pressure source power amplifier Download PDFInfo
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- CN108153281B CN108153281B CN201711412330.1A CN201711412330A CN108153281B CN 108153281 B CN108153281 B CN 108153281B CN 201711412330 A CN201711412330 A CN 201711412330A CN 108153281 B CN108153281 B CN 108153281B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0259—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the response to fault detection
- G05B23/0286—Modifications to the monitored process, e.g. stopping operation or adapting control
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Abstract
The invention discloses a kind of exchange dual power supplies based on the output of high voltage constant pressure source power amplifier for the tester of throwing system; unit is given including signal processing; and push-pull output stage, power-amplifier stage, sampling protection, the output network that unit is connect are given with the signal processing; exchange output and modular power source; the signal processing gives unit and is configured to the alternating voltage feedback signal subtraction of the ac voltage signal of external input and power-amplifier stage output exporting the error signal of amplification；The push-pull output stage is configured to amplify the positive half-wave of error signal and negative half-wave；The power-amplifier stage is configured to positive half-wave and negative half-wave carrying out power amplification, exports AC sine wave voltage；The output network configuration is that the phase compensation of capacitive and perception is carried out to the load of AC sine wave voltage；The sampling relaying configuration is that load turns off external given ac voltage signal and output voltage when exceeding setting voltage or current threshold.
Description
Technical field
The invention belongs to test equipment technology more particularly to a kind of exchanges based on the output of high voltage constant pressure source power amplifier
Dual power supply for throwing system tester.
Background technique
In power generation and transmission process, to guarantee power supply reliability, user is reduced to the maximum extent and is had a power failure, substation
The power supply mode of dual power supply or more power supply mutual backup, automatic change-over device of emergency (letter are generally used with responsible consumer
Claim " backup auto-activating device ") it is the intelligent controlling device for realizing this function, safe and reliable operation guarantees backup power source automatic switching
It is successfully crucial.
The main test item of exchange dual power supply spare power is whether standby throwing controller can reliably act, standby each other
With.
Traditional standby throwing controller test device mainly adds AC three-phase alternating voltage by way of manual voltage regulation
It is thrown on controller standby, to detect the acting characteristic of control device.However there are many disadvantages, such as pressure regulation for such detection mode
The High voltage output that equipment is heavy, is not isolated may jeopardize testing crew personal safety, and test result dispersibility is higher etc..
To solve the above-mentioned problems, a kind of exchange of single-phase up to 300V output based on large-power MOS part has been invented
Power supply spare power tester.This test device is according to given signal with certain gain multiplying power amplified signal, thus defeated
The reliable alternating voltage of precision out, and amplitude, phase, frequency are independently adjustable, over all Integration is mounted in a chest, safely may be used
It leans on, is easy to carry.
Summary of the invention
This exchange dual power supply based on the output of high voltage constant pressure source power amplifier is realized in for the tester of throwing system
:
Tester includes that signal processing gives unit, and gives the push-pull output that unit is connect with the signal processing
Grade, power-amplifier stage, sampling protection, output network, exchange output and modular power source.The signal processing gives unit configuration
Alternating voltage feedback signal for ac voltage signal and the power-amplifier stage output for inputting power module does subtraction, defeated
Amplified error signal out；The push-pull output stage is configured to amplify the positive half-wave of error signal and negative half-wave；
The power-amplifier stage is configured to carrying out positive half-wave and negative half-wave into power amplification, the AC sine wave electricity of output HIGH voltage
Pressure；The output network configuration is that the phase compensation of capacitive and perception is carried out to the load of AC sine wave voltage；Described
Sampling relaying configuration is that load carries out power-off protection when exceeding voltage or current threshold.
It is improved as one of present invention, the modular power source includes 220V exchange input interface, two-stage EMI filtering
Device, AC/DC modular power source, first terminal and Second terminal, wherein the AC/DC modular power source is set to two-stage EMI filtering
Between device.
The first terminal of the modular power source is connected to+450V power supply, and Second terminal is connected with -450V power supply, while described
Modular power source is also linked into the input terminal of the power-amplifier stage, ± 450V power supply to power amplifier triode J5027,
2SK1968, ATP10050 power supply.
It is improved as one of present invention, the external given ac voltage signal (exchange of such as external generator output
Small signal) it is that exchange gives small signal, the small signal of alternating voltage feedback signal AC regeneration of power-amplifier stage output.
It being improved as one of present invention, the described exchange output is connected with third terminal, forth terminal, and described the
Three terminals, forth terminal are connected to the standby throwing equipment input terminal of load to be measured, provide sine voltage for loading test set.
The present invention is protected the AC power source exported based on high voltage constant pressure source power amplifier and is up to for the tester output of throwing system
The effective voltage value of AC300V, and the reliable alternating voltage output of gamut precision, also want amplitude, phase, frequency independently adjustable.
Detailed description of the invention
It in order to illustrate the embodiments of the present invention more clearly or embodiment in the prior art, below will be to embodiment or existing
There is attached drawing needed in technical description briefly to introduce.It should be evident that the accompanying drawings in the following description is the present invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is module frame chart of the invention.
Fig. 2 is the schematic diagram of signal feeding processing unit of the present invention.
Fig. 3 is the schematic diagram of push-pull cascade output of the present invention.
Fig. 4 is the schematic diagram of power amplification of the present invention.
Fig. 5 is the schematic diagram of invention output network.
Fig. 6 is the schematic diagram of present invention sampling protection.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
Specific implementation of the invention is described in detail below in conjunction with specific embodiment.
In conjunction with attached drawing 1-6, it is a kind of based on high voltage constant pressure source power amplifier output exchange dual power supply for throwing system tester,
Unit is given including signal processing, and is given push-pull output stage that unit connect with the signal processing, power-amplifier stage, adopted
Sample protection, output network, exchange output and modular power source；
Specifically, signal processing give unit be configured to by the ac voltage signal (0-7VRMS) of external given input with
The alternating voltage feedback signal (0-7VRMS) of power-amplifier stage output does subtraction, exports amplified error signal, this list
Member uses high-accuracy amplifier OPA2277UK, can guarantee the stability for exporting voltage signal to be amplified, by Z=1/ (2 π fc),
Middle capacitor C1=200pF, R4=6.8K can calculate secondary amplification factor Au ≈ 8000.
Specifically, push-pull output stage is configured to put the positive half-wave of ac voltage signal to be amplified and negative half-wave
Greatly.This grade of triode uses high voltage triode J5027 and 2SK1968, by resistance R2 positive bias and R14 negative bias positive and negative
Half-wave amplification, by triode grounded base circuit characteristic, Au=β Rc/ (rbe+ (1+ β) Re), by the He of β=100 of triode J5027
β=40 of triode 2SK1968, R2=4.7K, R7=6.6K, R9=6.6K, R14=2.7K calculate separately positive and negative half-wave and put
Big multiple is 18 and 19.
Specifically, power-amplifier stage is configured to carrying out positive half-wave and negative half-wave into power amplification, output AC sine wave electricity
Pressure.This grade accesses circuit using high voltage high-power MOSFET tube ATP10050, MOSFET in a manner of source follower, by
There is the characteristic source follower of MOS Current amplifier characteristic to carry out power amplification, and then driving load.The setting of gain: Avg=
K × Vo (Rf/R) changes the value of feedback the divider resistance Rf and R in circuit to change circuit amplification factor, and Vo is power amplifier output electricity
Pressure changes Rf and R resistance value size, to adjust closed loop gain, to obtain required under conditions of Setting signal Vi is definite value
Output voltage values set Vi=7VRMS by Au=43 and obtain Avg=32.7, Vo=300V.
Specifically, output network configuration is that the phase compensation of capacitive and perception is carried out to the load of AC sine wave voltage；
CB1=100pF, R12=10K, when inductive load aggravates, the phase of output voltage will hysteresis offset, CB1 and R12 are just right
The phase lead compensation of lag；L1=6uH, R11=2 Ω, when capacitive load aggravates, the phase of output voltage will in advance partially
It moves, CB1 and R12 are just to advanced phase-lag compensation.
Specifically, sampling protection circuit configuration is to load to disconnect external give when exceeding electricity setting pressure or current threshold automatically
Ac voltage signal.Setting output 20V disconnects output and protects, and RW1=6 Ω then samples the voltage of output 1.2V, through excessive
Triode is connected in the voltage of piezoresistance output 0.7V or so, and then drives optocoupler conducting, then the optocoupler signal of conducting to outer
It connects signal processing and gives unit, signal processing gives unit and disconnects Setting signal and output voltage, and then protects circuit devcie.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should be included in protection scope of the present invention within mind and principle.
Claims (5)
1. a kind of exchange dual power supply based on the output of high voltage constant pressure source power amplifier is given for the tester of throwing system, including signal processing
Order member, and push-pull output stage, power-amplifier stage, sampling protection, the output net that unit is connect are given with the signal processing
Network, exchange output and modular power source, which is characterized in that the signal processing gives unit and is configured to the exchange of external input
The alternating voltage feedback signal subtraction of voltage signal and power-amplifier stage output, exports the error signal of amplification；Described
Push-pull output stage is configured to amplify the positive half-wave of error signal and negative half-wave；The power-amplifier stage is configured to will just
Half-wave and negative half-wave carry out power amplification, export AC sine wave voltage；The output network configuration is to AC sine wave
The load of voltage carries out the phase compensation of capacitive and perception；The sampling relaying configuration is load beyond setting voltage or electric current
External given ac voltage signal and output voltage are turned off when threshold value, the effective voltage value of the ac voltage signal is
0-7VRMS。
2. as described in claim 1 based on high voltage constant pressure source power amplifier output exchange dual power supply for throwing system tester,
It is characterized by: the modular power source includes 220V exchange input interface, and two-stage electromagnetic interface filter, AC/DC modular power source, the
One terminal and Second terminal, wherein the AC/DC modular power source is set between two-stage electromagnetic interface filter.
3. as described in claim 1 based on high voltage constant pressure source power amplifier output exchange dual power supply for throwing system tester,
It is characterized in that, the first terminal of the modular power source is connected to+450V power supply, Second terminal is connected with -450V power supply, while institute
State the input terminal that modular power source is also linked into the power-amplifier stage.
4. as described in claim 1 based on high voltage constant pressure source power amplifier output exchange dual power supply for throwing system tester,
The signal processing gives the friendship that unit is configured to the ac voltage signal for inputting power module and power-amplifier stage output
Stream voltage feedback signal makes the difference, and exports ac voltage signal to be amplified；It is characterized in that, the alternating current of power-amplifier stage output
The effective voltage value for pressing feedback signal is 0-7VRMS.
5. as described in claim 1 based on high voltage constant pressure source power amplifier output exchange dual power supply for throwing system tester,
It is characterized in that, the exchange output is connected with third terminal, forth terminal, the third terminal, forth terminal connection
Equipment input terminal is thrown to load to be measured is standby, provides sine voltage for loading test set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711412330.1A CN108153281B (en) | 2017-12-23 | 2017-12-23 | It is a kind of that dual power supply is exchanged for the tester of throwing system based on the output of high voltage constant pressure source power amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711412330.1A CN108153281B (en) | 2017-12-23 | 2017-12-23 | It is a kind of that dual power supply is exchanged for the tester of throwing system based on the output of high voltage constant pressure source power amplifier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108153281A CN108153281A (en) | 2018-06-12 |
| CN108153281B true CN108153281B (en) | 2019-07-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711412330.1A Expired - Fee Related CN108153281B (en) | 2017-12-23 | 2017-12-23 | It is a kind of that dual power supply is exchanged for the tester of throwing system based on the output of high voltage constant pressure source power amplifier |
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| CN101509955A (en) * | 2009-03-26 | 2009-08-19 | 四川电力试验研究院 | Automatic test system of dc circuit breaker characteristic parameter |
| CN201392392Y (en) * | 2009-03-13 | 2010-01-27 | 江苏省电力公司常州供电公司 | Experiment tester of pare power automatic switching device |
| CN101750555A (en) * | 2008-12-12 | 2010-06-23 | 江苏省电力公司扬州供电公司 | Spare automatic switching comprehensive tester |
| CN102621417A (en) * | 2012-03-26 | 2012-08-01 | 中铁八局集团电务工程有限公司 | Method for testing automatic throw-in equipment of emergency power supply |
| CN103308797A (en) * | 2013-05-22 | 2013-09-18 | 江苏省电力公司常州供电公司 | Intelligent automatic standby power supply switching device calibration system |
| CN203981790U (en) * | 2014-05-29 | 2014-12-03 | 国网山西省电力公司电力科学研究院 | A kind of combined type backup auto-activating device tester |
| CN204314400U (en) * | 2014-12-02 | 2015-05-06 | 深圳市广明科技有限公司 | Auto-switch-on integrated tester |
| CN205210230U (en) * | 2015-11-27 | 2016-05-04 | 云南电网有限责任公司电力科学研究院 | A high voltage output device for feeder automation test |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI344763B (en) * | 2007-10-03 | 2011-07-01 | Chroma Ate Inc | Apparatus and method for simulating a rectified passive loading |
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2017
- 2017-12-23 CN CN201711412330.1A patent/CN108153281B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101750555A (en) * | 2008-12-12 | 2010-06-23 | 江苏省电力公司扬州供电公司 | Spare automatic switching comprehensive tester |
| CN201392392Y (en) * | 2009-03-13 | 2010-01-27 | 江苏省电力公司常州供电公司 | Experiment tester of pare power automatic switching device |
| CN101509955A (en) * | 2009-03-26 | 2009-08-19 | 四川电力试验研究院 | Automatic test system of dc circuit breaker characteristic parameter |
| CN102621417A (en) * | 2012-03-26 | 2012-08-01 | 中铁八局集团电务工程有限公司 | Method for testing automatic throw-in equipment of emergency power supply |
| CN103308797A (en) * | 2013-05-22 | 2013-09-18 | 江苏省电力公司常州供电公司 | Intelligent automatic standby power supply switching device calibration system |
| CN203981790U (en) * | 2014-05-29 | 2014-12-03 | 国网山西省电力公司电力科学研究院 | A kind of combined type backup auto-activating device tester |
| CN204314400U (en) * | 2014-12-02 | 2015-05-06 | 深圳市广明科技有限公司 | Auto-switch-on integrated tester |
| CN205210230U (en) * | 2015-11-27 | 2016-05-04 | 云南电网有限责任公司电力科学研究院 | A high voltage output device for feeder automation test |
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| CN108153281A (en) | 2018-06-12 |
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