CN204241505U - The proving installation of inspection generator of wind generating set rotation speed measuring module - Google Patents
The proving installation of inspection generator of wind generating set rotation speed measuring module Download PDFInfo
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- CN204241505U CN204241505U CN201420702271.7U CN201420702271U CN204241505U CN 204241505 U CN204241505 U CN 204241505U CN 201420702271 U CN201420702271 U CN 201420702271U CN 204241505 U CN204241505 U CN 204241505U
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Abstract
The utility model discloses the proving installation of inspection generator of wind generating set rotation speed measuring module, the first output circuit of the power module comprising main MCU and be connected with main MCU, instruction input module, display module, output pulse signal, receives the first testing circuit of also converting analogue signals.Further, sine wave output can also be set and rush the second output circuit of signal, the second testing circuit of return pulse signal.The utility model can carry out Validity Test to rotation speed measuring module, helps the fault of analysis generator rotating speed module, and indirect labor corrects, and improves the control accuracy of unit, thus optimizes powertrace and the generated energy of unit.
Description
Technical field
The utility model relates to technical field of wind power, particularly relates to the proving installation of inspection generator of wind generating set rotation speed measuring module.
Background technology
At present, the quantity of wind power generating set installed and used of China is considerable.In the process of process unit powertrace, because power of the assembling unit measurement module error causes power of the assembling unit curve case that is bad and generated energy problem also again and again to occur.Gspeed module and the every deviation 0.1rpm of actual revolution in the unit of water-cooled current transformer configuration, the generated output of unit will be subject to the impact of about 10kW; Gspeed module and the every deviation 0.1rpm of actual revolution in the unit that air-cooled unsteady flow configures, the generated output of unit will be subject to the impact of about 15kW.Because rotating speed module is made up of discrete simulation electronic components and parts, along with the prolongation of service time and the impact of temperature, the capacity cell characteristic in circuit changes, and tachometric survey there will be error.As the Gspeed module in golden wind GW1500 unit and OverSpeed module along with the prolongation of service time and the impact of temperature all can occur tachometric survey error.In order to improve generating capacity and the control accuracy of unit, Gspeed module needs regularly to verify.Simultaneously in order to test the overspeed protection performance of unit, OverSpeed module also needs to carry out periodic check inspection.Therefore, found the proving installation of inspection generator of wind generating set rotation speed measuring module, one of current important research and development problem of real genus.
Utility model content
The purpose of this utility model is to provide the proving installation of inspection generator of wind generating set rotation speed measuring module, Validity Test can be carried out to rotation speed measuring module, help the fault of analysis generator rotating speed module, indirect labor's trimming process, improve the control accuracy of unit, thus optimize powertrace and the generated energy of unit, reach the optimization object to unit.
For achieving the above object, the utility model adopts following technical scheme:
The proving installation of Wind turbines generator speed measurement module, the first output circuit of the power module comprising main MCU and be connected with main MCU, instruction input module, display module, output pulse signal, receives and the first testing circuit of converting analogue signals.
Further, the second output circuit of the sine wave output signal be connected with main MCU is also comprised.
Further, the second testing circuit of the return pulse signal be connected with main MCU is also comprised.
Further, described second output circuit comprise to be connected with main MCU and produce sine wave signal from MCU and digital to analog converter.
Further, described main MCU gives the first output circuit according to the direct output pulse signal of the instruction of instruction input module.
Further, described first testing circuit is provided with analog to digital converter.
Further, described analog to digital converter is single channel analog to digital converter, and the input end of described single channel analog to digital converter connects two bars receiving liness by three toggle switches.
Further, described main MCU also connects or is integrated with overvoltage indicating circuit, for showing the input signal whether overvoltage of described analog to digital converter.
Owing to adopting technique scheme, the utility model at least has the following advantages:
(1) the utility model can be tested Gspeed and OverSpeed rotation speed measuring module by the first output circuit and the first testing circuit, can be tested Gpulse rotation speed measuring module by the second output circuit and the second testing circuit, can be tested the combinatorial module of Gpulse rotation speed measuring module and Gspeed rotation speed measuring module by the second output circuit and the first testing circuit, thus judge the state of each rotation speed measuring module, help the fault of analysis generator rotating speed module, assist and carry out manual synchronizing, improve the control accuracy of unit, thus optimize the powertrace of unit, improve the generated energy of unit, reach the optimization object to unit.
(2) for reducing spare parts consumption cost, logistics cost, needs scene possesses generating unit speed module maintenance, Basic function testing ability.Proving installation of the present utility model can realize testing separately Gpulse, Gspeed and OverSpeed tri-kinds of rotation speed measuring modules by above-mentioned setting, also can carry out joint test to Gpulse module and Gspeed module, be helped the failure condition of analysis three kinds of rotating speed modules by test result.
(3) accuracy of setting value of being overrun by circuit test OverSpeed module, can check that unit is overrun safety protection function, helps the functional reliability determining the theft-resistant link chain of unit.
(4) the utility model has circuit simply, the advantages such as expense is low, processing ease, interlock circuit to be printed on circuit board and integrated further with parts, can obtain small and exquisite practicality, portable product, the maintenance being conducive to on-the-spot unit uses, and improves the efficiency detecting and repair.
Accompanying drawing explanation
Above-mentioned is only the general introduction of technical solutions of the utility model, and in order to better understand technological means of the present utility model, below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
Fig. 1 is the proving installation structural representation of inspection generator of wind generating set rotation speed measuring module of the present utility model.
Fig. 2 be this proving installation under Over Speed module testing pattern with tested model calling schematic diagram.
Fig. 3 is this proving installation and tested model calling schematic diagram when Over Speed module exports two-way tach signal.
Fig. 4 be this proving installation under GSpeed module testing pattern with tested model calling schematic diagram.
Fig. 5 be this proving installation under Gpulse module testing pattern with tested model calling schematic diagram.
Fig. 6 be this proving installation under Gspeed+Gpulse module joint test pattern with tested model calling schematic diagram.
Fig. 7 is the connection diagram of three toggle switches.
Embodiment
The proving installation of inspection generator of wind generating set rotation speed measuring module of the present utility model, the first output circuit of the power module comprising main MCU and be connected with main MCU, instruction input module, display module, output pulse signal, receives and the first testing circuit of converting analogue signals.In addition, the second output circuit of sine wave output signal and the second testing circuit of return pulse signal that are connected with main MCU can also be set further.
As preferred embodiment, proving installation of the present utility model comprises above-mentioned first output circuit, the second output circuit, the first testing circuit, the second testing circuit.Wherein, test signal, for connecting the input end of described generator speed measurement module, is transferred to described generator speed measurement module by the output terminal of output circuit; The feedback signal transmission of described generator speed measurement module, for connecting the output terminal of described generator speed measurement module, is given described main MCU by the input end of testing circuit.Further, at the output terminal of output circuit and the input end of testing circuit, can connectivity port be set.
By above-mentioned setting, proving installation can check separately OverSpeed module, Gspeed module, Gpulse module in generator of wind generating set rotation speed measuring module, also can carry out joint test to the combinatorial module that Gpulse module and Gspeed model calling form.Wherein, can be tested separately Gspeed and OverSpeed rotation speed measuring module by the first output circuit and the first testing circuit, can be tested Gpulse rotation speed measuring module by the second output circuit and the second testing circuit, can be tested the combinatorial module of Gpulse rotation speed measuring module and Gspeed rotation speed measuring module by the second output circuit and the first testing circuit, thus judge the state of each rotation speed measuring module, help the fault of analysis generator rotating speed module, assist and carry out manual synchronizing.
For above-mentioned four kinds of test forms, the proving installation of inspection generator of wind generating set rotation speed measuring module of the present utility model can realize four kinds of test patterns, respectively: 1, Over Speed module testing pattern; 2, Gspeed module testing pattern; 3, Gpulse module testing pattern; 4, Gspeed+Gpulse module joint test pattern.These four kinds of patterns are all exported and measuring ability by circuit realiration as shown in Figure 1.
Refer to shown in Fig. 1, described output circuit comprises the first output circuit for exporting square-wave signal and the second output circuit for sine wave output signal, and the output terminal of first, second output circuit described is respectively equipped with first, second output interface for connecting described generator speed measurement module input end; Described testing circuit comprises the first testing circuit for detecting simulating signal and the second testing circuit for detecting pulse signal, and the input end of first, second testing circuit described is respectively equipped with first, second input interface for connecting described generator speed measurement module output terminal.
Main MCU gives the first output circuit according to the direct output pulse signal of the instruction of instruction input module.Second output circuit comprise be connected with main MCU from MCU and the digital to analog converter that is connected with from MCU, be used for producing sine wave signal from MCU and digital to analog converter.
First testing circuit is provided with analog to digital converter, is also provided with protection circuit between analog to digital converter and the first input interface.Described analog to digital converter arranges and adopts single channel analog to digital converter, described single channel analog to digital converter only has 1 single pass analog signals Collect conversion chip, so 1 road input signal once can only be tested, for the module of overrunning of exportable two-way tach signal, feedback signal is doubleway output, now, three toggle switches can be set up at the input end with analog to digital converter, refer to shown in Fig. 7, the input end of described single channel analog to digital converter connects two bars receiving liness by three toggle switches.When the poke rod of toggle switch is in centre position, switch contact not with any road signal communication in two paths of signals; When the poke rod of toggle switch is struck any side, switch contact and two paths of signals Zhong mono-tunnel signal communication.Selected to detect respectively two paths of signals passage by three toggle switches.For the module of overrunning of exportable two-way tach signal, also can solve the problem by adopting double-channel analog/digital converter, directly corresponding interface being connected to each other, and without the need to setting up toggle switch.
Further, because the maximum input voltage of analog to digital converter is restricted, as in the present embodiment, A/D chip maximum input voltage is 5V, so the voltage of signal input channel can not more than 10V (partial pressure potential device dividing potential drop 1/2nd).Main MCU is also connected with overvoltage indicating circuit, indicates as the overvoltage of signalling channel voltage signal.Overvoltage instruction adopts voltage comparator circuit LM393, and is arranged to 8V by potentiometer, when signalling channel voltage is higher than 8V, arranges aid lamp and lights, and represents that signalling channel input voltage is more than 8V.Be doubleway output for above-mentioned feedback signal, may correspond to and two signal lamps are set, be respectively used to the input condition of display two signalling channels.When signalling channel does not have wiring, signalling channel voltage signal overvoltage instruction is both lit, and does not now represent input signal superpotential.
Shown in Fig. 2,3, under the test pattern of Over Speed module, the test tach signal for exporting to Over Speed module arranges following four kinds: test rotating speed one output speed 8rpm tacho-pulse; Test rotating speed two output speed 10rpm tacho-pulse; Test rotating speed three output speed 16rpm tacho-pulse; Test rotating speed four output speed 20rpm tacho-pulse.In such a mode, circuit produces the square-wave signal of fixed frequency by host scm (MCU), exports 24 volts of square-wave pulse signals eventually through photoelectric isolating circuit.Fig. 3 is this proving installation and tested model calling schematic diagram when Over Speed module exports two-way tach signal.Over Speed module feedback returns simulating signal to the first testing circuit.
In addition, for Over Speed module, proving installation of the present utility model can also be used in wind power generating set and overrun the theft-resistant link chain overspeed protection function of module Over Speed to test unit.Specifically, be connected by the input end of the output interface of the first output circuit with Over Speed module, the output terminal of OverSpeed module remains on the annexation in aerogenerator unit safe chain.Start proving installation, observe the set state of wind power generating set feedback.As arranged the first output circuit by 25Hz output pulse signal, if directly accessed by this signal to Over Speed module, Over Speed module exports corresponding tach signal, if overrun, then theft-resistant link chain disconnects, and unit is protected.
Shown in Fig. 4, under the test pattern of GSpeed module, the test tach signal for exporting to GSpeed module arranges following four kinds: test rotating speed one output speed 8.333rpm tacho-pulse; Test rotating speed two output speed 13.332rpm tacho-pulse; Test rotating speed three output speed 16.667rpm tacho-pulse; Test rotating speed four output speed 20.833rpm tacho-pulse.In such a mode, circuit sends the square-wave signal of fixed frequency by host scm (MCU), exports 24 volts of square-wave pulse signals eventually through photoelectric isolating circuit.GSpeed module feedback returns simulating signal to the first testing circuit.
Shown in Fig. 5, under the test pattern of Gpulse module, give D/A chip from single-chip microcomputer (MCU) by interchange fixed frequency signal, send 10Hz sine wave signal, then export the sinusoidal ac signal of fixing three-phase 10Hz by change-over circuit.This signal exports to Gpulse module.Second testing circuit receives 24 volts of square-wave pulse signals that Gpulse module is sent.If the pulse signal number that 1 second received is not equal to 60, so illustrate that Gpulse module existing problems needs further check and repair.
Please coordinate shown in Fig. 6, when using Gspeed+Gpulse module joint test pattern, detected object is the combinatorial module of Gspeed and Gpulse.First Gspeed module is connected according to the connected mode in Wind turbines drawing with Gpulse module.Under Gspeed+Gpulse module joint test pattern, second output circuit of proving installation exports the sinusoidal ac signal of fixing three-phase 10Hz to Gpulse module, proving installation gathers the rotating speed voltage analog signal of Gspeed module output by the first testing circuit simultaneously, and simulating signal passes to main MCU after analog to digital conversion.
In above-mentioned four kinds of test patterns, described test rotating speed can be set to different rotating speeds as required, also more test rotating speed can be set further, so can obtain more test data, thus the linear case of reaction test module feedback rotating speed more accurately.
Described proving installation is provided with the operating key and LCDs that are connected with described main MCU, for realizing instruction input and display.Setting operation key is for selecting test pattern and test rotating speed, and LCDs can show current test pattern, test mode and test result.
As a kind of specific embodiment: arrange rotating speed module selector switch, setting is when rotating speed module selector switch is pulled to right side, and liquid crystal display display Over Speed, represents that test module will use OverSpeed module; When rotating speed module selector switch is pulled to left side, liquid crystal display display GSpeed, represents that test module will use GSpeed module; When rotating speed module selector switch is in centre position, any test module is not selected in representative, the software revision code of liquid crystal display display proving installation: SpeedTestModuleV3.0, when showing this information, the further operation of operating personnel waited for by proving installation.When for test blower fan overrun the theft-resistant link chain overspeed protection function of module time; rotating speed module selector switch is set when centre position; press test and start key; liquid crystal display Over Speed Test 25rpm; now 25Hz output pulse signal pressed by test circuit; directly access this signal to Over Speed module, module of overrunning exports corresponding tach signal, and unit safety chain provides feedback.
It is simple that proving installation of the present utility model has circuit, expense is low, the advantages such as processing ease, interlock circuit to be printed on circuit board and integrated further with associated components, small and exquisite practicality, portable product can be obtained, the maintenance being conducive to on-the-spot unit uses, and improves the efficiency detecting and repair.
When proving installation uses, 24VDC power supply can be used to power for proving installation and tested module.According to the form of module to be measured, be connected with measured rotating speed module with input interface according to the output of correspondence.Do to illustrate respectively according to tested object below:
1, the test of Over Speed module and adjustment:
Connect circuit and power supply, power to proving installation, stir the rotating speed module selector switch of proving installation, select Over Speed template pattern, next give Over Speed module for power supply.The connection of proving installation and Over Speed module as shown in Figure 2.If Over Speed modular power source lamp is normal, check signalling channel voltage signal overvoltage instruction or use multimeter to check that whether the voltage that Over Speed module feedback exports is normal.In the normal situation of voltage, press test rotating speed one options button (rotating speed 8rpm), next press proving installation and start key, proving installation output interface 1 sends rotational speed pulse signal.Start to carry out working output voltage signal after Over Speed module receives signal, the input interface 1 of proving installation receives the voltage signal that Over Speed module is sent, measurement rotating speed reading now on liquid crystal display starts to change and raises, and compares the gap of setting speed and measurement tachometer value after rotating speed display to be measured is stable.If rotating speed difference is greater than 0.1rpm, so then needs manually to use terminal to rise and the rotational speed regulation potentiometer of Over Speed rotating speed module is regulated and corrected.
The calibration speed regulating error of Over Speed module requires to be reduced to below 0.1rpm, then test rotating speed two options button, test rotating speed three options button, test rotating speed four options button is pressed successively, and check setting speed and the deviate of testing rotating speed successively, if when rotating speed deviate is more than 0.1rpm, all want the potentiometer of artificial adjusting rotary speed module.The test of another signalling channel and adjustment are also as above.When setting speed is greater than 15rpm, note the contact whether disjunction of two relays of overrunning measured in Over Speed module.
The wheel speed 1 that Over Speed module feedback is exported or the situation of wheel speed 2 two signals, if adopt the testing circuit of above-mentioned single channel analog to digital converter and three toggle switches, need first to stir signalling channel selector switch, select the voltage signal that a passage in the wheel speed 1 of measurement Over Speed module feedback output or wheel speed 2 two signalling channels exports, measure according to above-mentioned steps again, measure after terminating and stir selector switch again in order to test another one signalling channel.
2, the test of GSpeed module and adjustment:
Connect circuit and power supply, power to proving installation, stir the rotating speed module selector switch of proving installation, select GSpeed template pattern, next give GSpeed module for power supply.The connection of proving installation and GSpeed module as shown in Figure 3.If GSpeed modular power source lamp is normal, multimeter is used to check the voltage whether normal (or checking that the overvoltage of signalling channel voltage signal indicates) of the rotating speed 3 that GSpeed module exports.In the normal situation of voltage, press test rotating speed one options button (rotating speed 8.333rpm), tester is stirred signalling channel selector switch and is selected signalling channel, and next press proving installation and start key, proving installation output interface 1 sends tacho-pulse.GSpeed module starts after receiving signal to carry out working output voltage signal, the input interface 1 of proving installation receives the voltage signal that GSpeed module is sent, measurement rotating speed reading now on liquid crystal display starts to change and raises, and compares the gap of setting speed and measurement tachometer value after rotating speed display to be measured is stable.If rotating speed difference is greater than 0.05rpm, so then needs manually to use terminal to rise and the rotational speed regulation potentiometer of GSpeed rotating speed module is regulated.The calibration speed regulating error of GSpeed module requires to be reduced to below 0.05rpm, then test rotating speed two options button, test rotating speed three options button, test rotating speed four options button is pressed successively, and check setting speed and the deviate of testing rotating speed successively, if when rotating speed deviate is more than 0.05rpm, all want the potentiometer of artificial adjusting rotary speed module, make every effort to each setting speed lower module output bias and be less than 0.05rpm.Due to rotating speed module export may exist certain non-linear, so will ensure that GSpeed module actual speed deviation under 13.332rpm and 16.667rpm speed setting is less than 0.025rpm.
3, the test of Gpulse module:
Connect circuit and power supply, power to proving installation, stir the rotating speed module selector switch of proving installation, select Gpulse template pattern, next give Gpulse module for power supply.The connection of proving installation and Gpulse module as shown in Figure 4.Press proving installation and start key, test circuit system output interface 2 sends 10Hz three-phase sine-wave signal.Gpulse module starts to carry out work and exports 24 volts of pulse signals after receiving signal, the input interface 2 of proving installation receives the pulse signal that Gpulse module is sent, ranging pulse reading now on liquid crystal display starts to change and raises, and compares the gap of setting pulse (60Hz) and ranging pulse value after pulse display to be measured is stable.If difference pulse more than 1, then illustrate that Gpulse module existing problems need the maintenance of further manual detection.
4, Gspeed+Gpulse module joint test:
Connect circuit and power supply, power to proving installation, stir the rotating speed module selector switch of proving installation, select Gspeed+Gpulse module joint test pattern, next give Gspeed and Gpulse module for power supply.The connection of proving installation and Gspeed and Gpulse module as shown in Figure 5.Press proving installation and start key, test circuit system output interface 2 sends 10Hz three-phase sine-wave signal.Gpulse module starts to carry out work and exports 24 volts of pulse signals after receiving signal, GSpeed module starts after receiving signal to carry out working output voltage signal, the input interface 1 of proving installation receives the voltage signal that GSpeed module is sent, measurement rotating speed reading now on liquid crystal display starts to change and raises, and compares setting speed and measure the gap trying tachometer value after rotating speed display to be measured is stable.If difference is more than 0.1rpm, then illustrate that Gpulse module existing problems need the maintenance of further manual detection.
The above; it is only preferred embodiment of the present utility model; not do any pro forma restriction to the utility model, those skilled in the art utilize the technology contents of above-mentioned announcement to make a little simple modification, equivalent variations or modification, all drop in protection domain of the present utility model.
Claims (8)
1. check the proving installation of generator of wind generating set rotation speed measuring module, it is characterized in that, the first output circuit of the power module comprising main MCU and be connected with main MCU, instruction input module, display module, output pulse signal, to receive and the first testing circuit of converting analogue signals.
2. the proving installation of inspection generator of wind generating set rotation speed measuring module according to claim 1, is characterized in that, also comprises the second output circuit of the sine wave output signal be connected with main MCU.
3. the proving installation of inspection generator of wind generating set rotation speed measuring module according to claim 2, is characterized in that, also comprises the second testing circuit of the return pulse signal be connected with main MCU.
4. the proving installation of inspection generator of wind generating set rotation speed measuring module according to claim 3, is characterized in that, described second output circuit comprise to be connected with main MCU and produce sine wave signal from MCU and digital to analog converter.
5. the proving installation of inspection generator of wind generating set rotation speed measuring module according to claim 3, is characterized in that, described main MCU gives the first output circuit according to the direct output pulse signal of the instruction of instruction input module.
6. the proving installation of inspection generator of wind generating set rotation speed measuring module according to claim 3, is characterized in that, described first testing circuit is provided with analog to digital converter.
7. the proving installation of inspection generator of wind generating set rotation speed measuring module according to claim 6, it is characterized in that, described analog to digital converter is single channel analog to digital converter, and the input end of described single channel analog to digital converter connects two bars receiving liness by three toggle switches.
8. the proving installation of inspection generator of wind generating set rotation speed measuring module according to claim 6, is characterized in that, described main MCU also connects or is integrated with overvoltage indicating circuit, for showing the input signal whether overvoltage of described analog to digital converter.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330592A (en) * | 2014-11-20 | 2015-02-04 | 北京天源科创风电技术有限责任公司 | Testing device and method for detecting generator speed measurement modules of wind turbine generator system |
| CN106771316A (en) * | 2016-12-26 | 2017-05-31 | 渤海造船厂集团有限公司 | The rotating speed and rate measuring method of motor |
| CN111190029A (en) * | 2019-12-20 | 2020-05-22 | 福建福清核电有限公司 | System and method for cross comparison of steam-driven pump speed sensors of nuclear power plant |
-
2014
- 2014-11-20 CN CN201420702271.7U patent/CN204241505U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330592A (en) * | 2014-11-20 | 2015-02-04 | 北京天源科创风电技术有限责任公司 | Testing device and method for detecting generator speed measurement modules of wind turbine generator system |
| CN104330592B (en) * | 2014-11-20 | 2017-06-06 | 北京天源科创风电技术有限责任公司 | Check the test device and method of generator of wind generating set rotation speed measuring module |
| CN106771316A (en) * | 2016-12-26 | 2017-05-31 | 渤海造船厂集团有限公司 | The rotating speed and rate measuring method of motor |
| CN111190029A (en) * | 2019-12-20 | 2020-05-22 | 福建福清核电有限公司 | System and method for cross comparison of steam-driven pump speed sensors of nuclear power plant |
| CN111190029B (en) * | 2019-12-20 | 2022-02-18 | 福建福清核电有限公司 | System and method for cross comparison of steam-driven pump speed sensors of nuclear power plant |
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