CN203376451U - Excitation system open-loop characteristic tester - Google Patents
Excitation system open-loop characteristic tester Download PDFInfo
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- CN203376451U CN203376451U CN201320158665.6U CN201320158665U CN203376451U CN 203376451 U CN203376451 U CN 203376451U CN 201320158665 U CN201320158665 U CN 201320158665U CN 203376451 U CN203376451 U CN 203376451U
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- 230000005284 excitation Effects 0.000 title claims abstract description 30
- 238000013519 translation Methods 0.000 claims description 6
- 238000012360 testing method Methods 0.000 abstract description 20
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract description 2
- 238000004458 analytical method Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000819 phase cycle Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013523 data management Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
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- 238000010998 test method Methods 0.000 description 1
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Abstract
The utility model relates to an excitation system open-loop characteristic tester. The excitation system open-loop characteristic tester comprises four parts, namely a three-phase power supply output circuit, a working power supply conversion circuit, a built-in resistor load circuit and a waveform display circuit. The excitation system open-loop characteristic tester is researched and developed in order to solve the defects existing in conventional excitation system open-loop tests and characterized by large amounts of facilities and low efficiency. The excitation system open-loop characteristic tester achieves the digitalization, miniaturization and portability of excitation system open-loop tests and solves problems existing in on-site tests and characterized by relatively large amounts of facilities, wiring complexity and safety hazard existence.
Description
Technical field
The utility model belongs to the survey control technology field, is specifically related to a kind of tester of excitation system open loop characteristic, is applicable to the quick location of complete detection and the excitation system fault of exciter control system.
Background technology
In recent years China's power construction is advanced by leaps and bounds, at the single-machine capacity of building the generator unit, improve rapidly, rated excitation voltage and the exciting current of generator are all increasing, the security of the excitation system particular importance that more and more seems, in static debugging test and major overhaul test in early days, excitation system open loop test is an important test.
The purpose of excitation system open loop test is to create the basic control function of the environmental test field regulator of a simulation, the reliable ability triggered of pulse, thyristor integrity etc.Check phase sequence and the phase place in synchronizing signal loop simultaneously, check that whether the trigger pulse of regulator is correct, check whether the thyristor power bridge all can reliably trigger, check that whether the SCR-output waveform is correct.
The equipment such as the ohmic load that AC power, resistance are appropriate and power is suitable of the external 380V of excitation system open loop test needs and oscillograph.The traditional way of AC power of obtaining 380V is to find at the scene the cable of a section more than 30 meter, from service chamber, connects and draws AC power.Test method is the AC power of 380V to be connected to rectifier cabinet exchange on incoming-line busbar, by resistance and oscillograph and be attached on rectifier cabinet direct current outgoing line busbar.The shortcoming of this way is the restriction that test condition is subject to field condition, and equipment is more, and efficiency is not high.
The utility model content
Of the present utility model
purposejust be to provide a kind of many for traditional excitation system open-loop test equipment, the defect that efficiency is not high, and the tester of the excitation system open loop characteristic of research and development.
The utility model solves the technical scheme that its practical novel purpose adopts:
The utility model is comprised of three-phase supply output circuit, working power translation circuit, built-in resistor load circuit and waveform display circuit four parts.
Described three-phase supply output circuit comprises by computing machine, D/A converter, power amplifier and step-up transformer and forming.Produce by sine function the sinusoidal signal that effective value is 10V in described computing machine; The sinusoidal signal output terminal of described computing machine connects the input end of power amplifier through described D/A converter, the sinusoidal signal that the output terminal output effective value of power amplifier is 35V; The output termination step-up transformer of described power amplifier by the 35V 180V that appreciates, is finally received output terminal of the present utility model by voltage.
Described working power translation circuit is powered to power amplifier through be transformed to ± 12V of commutating circuit direct supply by the 220V alternating current input power supplying.
Described built-in resistor load circuit is that a resistance is 300 Ω-500 Ω, the adjustable resistance that peak power is 2KW.
Described waveform display circuit is comprised of bleeder circuit, A/D converter and computing machine.Described bleeder circuit, by the resistance series connection of a 1K Ω resistance and 10K Ω, then is connected in parallel in described built-in resistor load.The ohmically voltage of 1K Ω outputs to the voltage waveform in the described built-in resistor load of described Computer display through described A/D converter.
Waveform display circuit and the described computing machine of the three-phase supply output circuit computing machine for sharing.
Described A/D converter and D/A converter adopt the PXI-6143 data collecting card of America NI company, and computing machine adopts portable computer.
Described power amplifier adopts the PB58A type high power amplifier of the production of U.S. APEX company.
Of the present utility model
beneficial effectfor:
The utility model is for the triviality of excitation system open loop testing ground preliminary work, a kind of tester of excitation system open loop characteristic has been proposed, realized digitizing, miniaturization, the portability of excitation system open-loop test, solved that in the site test, equipment is more, wiring is complicated, had the difficult problem of potential safety hazard.
The utility model is applicable to test the rectifier cabinet open loop characteristic of various model exciter control systems.The utility model is easy to operate, safe and reliable, functional, easy to maintenance, the scope of the phase place in synchronizing signal loop that can the complete detection excitation system and phase sequence, pluse output circuit wiring, pilot angle, fully controlled bridge trigger loop and major loop working condition, further guarantee reliable, safety, the stable operation of excitation system.
The utility model is applicable to the crash analysis of the excitation system of various models.The fault that the measuring circuit of excitation system, synchronizing signal loop, pulse circuit disturb, controllable silicon triggers the hardware-in-the-loops such as loop is the typical fault of generator excited system; use utility model to the excitation system fault fast positioning, to shorten the time of generator force outage.
After scene is used, the loaded down with trivial details work that the utility model has avoided site test to prepare, saved the time that the excitation system open loop is tested greatly, improved the safe reliability of site test wiring, further reduced the labour intensity of testing crew.
The accompanying drawing explanation
The schematic block circuit diagram of the tester that Fig. 1 is a kind of excitation system open loop characteristic of the utility model embodiment.
Fig. 2 is excitation system open loop characteristic test waveform figure.
In described Fig. 2, in 20 milliseconds, by six wave heads, formed.
embodiment
As shown in accompanying drawing 1,2, as described in the utility model embodiment, the tester of excitation system open loop characteristic is comprised of three-phase supply output circuit, working power translation circuit, built-in resistor load circuit and waveform display circuit four parts.
Described three-phase supply output circuit comprises by computing machine, D/A converter, power amplifier and step-up transformer and forming.Produce by sine function the sinusoidal signal that effective value is 10V in described computing machine; The sinusoidal signal output terminal of described computing machine connects the input end of power amplifier through described D/A converter, the sinusoidal signal that the output terminal output effective value of power amplifier is 35V; The output termination step-up transformer of described power amplifier by the 35V 180V that appreciates, is finally received output terminal of the present utility model by voltage.
Described working power translation circuit is powered to power amplifier through be transformed to ± 12V of commutating circuit direct supply by the 220V alternating current input power supplying.
Described built-in resistor load circuit is that a resistance is 300 Ω-500 Ω, the adjustable resistance that peak power is 2KW.
Described waveform display circuit is comprised of bleeder circuit, A/D converter and computing machine.Described bleeder circuit, by the resistance series connection of a 1K Ω resistance and 10K Ω, then is connected in parallel in described built-in resistor load.The ohmically voltage of 1K Ω outputs to the voltage waveform in the described built-in resistor load of described Computer display through described A/D converter.
Waveform display circuit and the described computing machine of the three-phase supply output circuit computing machine for sharing.
Described A/D converter and D/A converter adopt the PXI-6143 data collecting card of America NI company, and computing machine adopts portable computer.
Described power amplifier adopts the PB58A type high power amplifier of the production of U.S. APEX company.
the course of work of the present embodiment is as follows(referring to Fig. 1,2):
One, output three-phase voltage:
The sinusoidal signal produced by sine function in computing machine becomes simulating signal through D/A converter, and power amplifier is amplified simulating signal.Signal after amplification is transformed to the power supply output of 180V through step-up transformer.
Two, obtain input signal:
Voltage in the built-in resistor load is transformed to and is applicable to the small voltage signal that computing machine is processed through bleeder circuit, become digital signal through the A/D conversion and deliver to computing machine.
Three, Data Management Analysis:
In portable computer, adopt graphical programming language LabVIEW software programming program to carry out data processing and analysis.Voltage waveform in the built-in resistor load is shown.
Four, data Storage & Display:
Utilize the voltage waveform in the load of portable computer stores built-in resistor, and show the various parameters such as magnitude of voltage in output three-phase voltage effective value and built-in resistor load.
Claims (1)
1. the tester of an excitation system open loop characteristic, is characterized in that it comprises three-phase supply output circuit, working power translation circuit, built-in resistor load circuit and waveform display circuit four parts;
Described three-phase supply output circuit comprises computing machine, D/A converter, power amplifier and step-up transformer, the sinusoidal signal output terminal of described computing machine connects the input end of power amplifier through described D/A converter, the output termination step-up transformer of power amplifier;
Described working power translation circuit is a rectification circuit, and it receives power amplifier from 220V alternating current input power supplying incoming transport voltage through the output of be transformed to ± 12V of rectification circuit direct supply;
Described built-in resistor load circuit is that a resistance is 300 Ω-500 Ω, the adjustable resistance that peak power is 2KW;
Described waveform display circuit comprises bleeder circuit, A/D converter and described computing machine, the computing machine that external input voltage is linked into through ohmic load circuit, bleeder circuit and A/D converter output; Described bleeder circuit is comprised of 1K Ω resistance of series connection and the resistance of 10K Ω, and it is connected in parallel in described built-in resistor load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320158665.6U CN203376451U (en) | 2013-04-02 | 2013-04-02 | Excitation system open-loop characteristic tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320158665.6U CN203376451U (en) | 2013-04-02 | 2013-04-02 | Excitation system open-loop characteristic tester |
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| Publication Number | Publication Date |
|---|---|
| CN203376451U true CN203376451U (en) | 2014-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320158665.6U Expired - Fee Related CN203376451U (en) | 2013-04-02 | 2013-04-02 | Excitation system open-loop characteristic tester |
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| Country | Link |
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| CN (1) | CN203376451U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106154159A (en) * | 2015-04-24 | 2016-11-23 | 中广核工程有限公司 | Excitation system testing device and method |
| CN106338689A (en) * | 2016-08-26 | 2017-01-18 | 国电南瑞科技股份有限公司 | Self-check method for running state of synchronous motor excitation system |
-
2013
- 2013-04-02 CN CN201320158665.6U patent/CN203376451U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106154159A (en) * | 2015-04-24 | 2016-11-23 | 中广核工程有限公司 | Excitation system testing device and method |
| CN106154159B (en) * | 2015-04-24 | 2019-05-17 | 中广核工程有限公司 | Excitation system testing device and method |
| CN106338689A (en) * | 2016-08-26 | 2017-01-18 | 国电南瑞科技股份有限公司 | Self-check method for running state of synchronous motor excitation system |
| CN106338689B (en) * | 2016-08-26 | 2018-11-30 | 国电南瑞科技股份有限公司 | A kind of synchronous motor excitation system operating status self checking method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140101 Termination date: 20160402 |
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| CF01 | Termination of patent right due to non-payment of annual fee |