CN204270144U - A kind of hydrogovernor simulation testing device based on dsp system - Google Patents
A kind of hydrogovernor simulation testing device based on dsp system Download PDFInfo
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Abstract
The utility model discloses a kind of hydrogovernor simulation testing device based on dsp system, comprise DSP control module, frequency input-output unit, modulus and D/A conversion unit, On-off signal unit, power supply unit and external connecting interface, DSP control module comprises interconnective dsp controller and static memory, dsp controller comprises the enhancement mode capture module on sheet, PWM module, SPI interface module, GPIO interface module and TCP communication interface unit, frequency input-output unit comprises frequency signal input conditioning module and frequency signal exports conditioning module.The utility model completely independently can realize hydrogovernor auto testing instrument, general purpose oscialloscope, multi-functional frequency meter, general measurement and control instrument function, realizes each functional unit closely cooperate based on dsp controller, guarantees that in test, each link sequential is correct.
Description
Technical field
The utility model relates to the test emulation device of hydrogovernor, is specifically related to a kind of hydrogovernor simulation testing device based on dsp system.
Background technology
On the one hand, hydropower, as the second largest power supply of China's electric system, runs power system safety and stability and plays important support effect.The safe and reliable basic guarantee being efficiently hydropower process safety and stablizing realization of hydraulic turbine control system, this needs the testing tool of multiple functional stable performance, carried out hydraulic turbine control system test and test by purchasing such as the combinations such as frequency generator, oscillograph, data collecting instrument of different instrument from different manufacturers in the past, because of differences such as each instrument producer technique, specifications, coordination between various instrument is encountered difficulties, sometimes need to organize multiple stage instrument just can carry out a fundamental test, bring inconvenience to test, make measuring accuracy be difficult to ensure simultaneously.Given this, need development function concentrated and unified and standard, the hydraulic turbine control system proving installation of convenient operation.
On the other hand, electric system simulation is one of important means of research Electrical Power System Dynamic behavior.In electric system, emulation technology has good application, and achieves a lot of achievement in research, creates good social and economic effects.Emulation tool and the software of a large amount of maturation are wherein there is, as RTDS, PSCAD/EMTDC etc., also has the electric power system transient stability software for calculation of domestic routine, the such as electric power system tide of China Power academy of sciences exploitation calculates, the simulation software PSASP of transient stability and calculation of short-circuit current, also has BPA software.But in these tool software, solve scarce capacity to nonlinear equation, prime mover model that it provides often is reduced to linear model, makes model become simpler, but do not conform to the actual conditions, so that the real behavior of prime mover in dynamic process of electrical power system can not be reflected really.This is because due to the impact of professional division and the shortage of early stage research means, think that the Calculations of Hydraulic Transient of Hydropower Unit, mechanical transition process and electromagnetic transition process are inconsistent in time scale, can separately study; Add the dimension and speed considering to calculate, in electric power system transient stability calculates, Hydraulic Power System generally adopts the simplified model under simple conduit pipe rigidity water attack-linearization hydraulic turbine hypothesis, cannot be used for Complex hydraulic system.This simulation calculation error that causes of simplifying hydraulic system models still can accept for the research of some problem, but for such as hydroelectric system mid-and long-term dynamic stability, turbine-generator units more synchronous, surge shaft system great fluctuation process the research of water power coupling and the closely-related problem of autoregulation such as to stablize, because data are incomplete, do not consider the impact etc. of nonlinear condition completely, have a strong impact on accuracy and the confidence level of calculating, even can cause irrational conclusion.In power system security control; need to consider that the genuine property of electrical network carries out the performance test of opertaing device and protective device; the real-time simulation of electric system need be realized; real-time simulation in recent years maximum are developed by Canadian Manitoba RTDS company that to manufacture full name be real-time digital simulator (Real Time Digital Simulator) (hereinafter referred to as RTDS), and it is that a kind of specialized designs is for studying the device of Transient Electromagnetic Phenomena in electric system.At present, RTDS has been widely used in electric power enterprise and the research institution of 28 countries (area), but this device can not emulate the nonlinear characteristic of electric system prime mover.In view of this, new technical scheme need be studied, consider nonlinear characteristic, set up and there is good accuracy, calculating non-linear prime mover real-time simulation apparatus fast; In conjunction with the now load of comparative maturity and electric power networks simulator, thus realize the non-linear real-time simulation of electric system.
Utility model content
The technical problems to be solved in the utility model is: for the above-mentioned technical matters of prior art, there is provided one completely independently can realize hydrogovernor auto testing instrument, general purpose oscialloscope, multi-functional frequency meter, general measurement and control instrument function, realize each functional unit based on dsp controller to closely cooperate, guarantee the hydrogovernor simulation testing device based on dsp system that in testing, each link sequential is correct.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of hydrogovernor simulation testing device based on dsp system, comprise DSP control module, frequency input-output unit, modulus and D/A conversion unit, On-off signal unit, power supply unit and external connecting interface, described power supply unit respectively with DSP control module, frequency input-output unit, modulus and D/A conversion unit, On-off signal unit is connected, described DSP control module comprises interconnective dsp controller and static memory, described dsp controller comprises enhancement mode capture module on sheet, PWM module on sheet, SPI interface module on sheet, GPIO interface module and TCP communication interface unit on sheet, described frequency input-output unit comprises frequency signal input conditioning module and frequency signal exports conditioning module, described modulus and D/A conversion unit comprise modulus modulate circuit, digital-to-analogue modulate circuit and modulus and analog-digital chip, the input end of described upper enhancement mode capture module is connected with external connecting interface by frequency signal input conditioning module, the output terminal of described upper PWM module exports conditioning module by frequency signal and is connected with external connecting interface, described upper SPI interface module is connected with modulus and analog-digital chip by spi bus, the input end of described modulus and analog-digital chip is connected with external connecting interface by modulus modulate circuit, the output terminal of described modulus and analog-digital chip is connected with external connecting interface by digital-to-analogue modulate circuit, described upper GPIO interface module is connected with external connecting interface by On-off signal unit, described dsp controller is connected with TCP communication interface unit.
Preferably, described On-off signal unit comprises the light-coupled isolation chip, the isolation logic process chip that connect successively, and described upper GPIO interface module is connected with external connecting interface by isolation logic process chip, light-coupled isolation chip successively.
Preferably, described external connecting interface is provided with four tunnel frequency input pins, and the input end that described four tunnel frequency input pins input conditioning module with frequency signal is respectively connected.
Preferably, described external connecting interface is also provided with four road rate-adaptive pacemaker pins, the output terminal that described four road rate-adaptive pacemaker pins export conditioning module with frequency signal is respectively connected.
Preferably, described external connecting interface is also provided with 16 road modulus input pins, described 16 road modulus input pins are connected with the input end of modulus modulate circuit respectively.
Preferably, described external connecting interface is also provided with eight road modulus output pins, described eight road modulus output pins are connected with the output terminal of digital-to-analogue modulate circuit respectively.
Preferably, described external connecting interface is also provided with eight road 24V On-off signal pins, described eight road 24V On-off signal pins are connected with the input end of light-coupled isolation chip respectively, and the output terminal of described light-coupled isolation chip is connected with the input end of isolation logic process chip by eight road 3.3V switch outlet lines.
The utility model has following advantage based on the hydrogovernor simulation testing device of dsp system:
1, the utility model comprises DSP control module, frequency input-output unit, modulus and D/A conversion unit, On-off signal unit, power supply unit and external connecting interface, DSP control module comprises interconnective dsp controller and static memory, dsp controller comprises enhancement mode capture module on sheet, PWM module on sheet, SPI interface module on sheet, GPIO interface module and TCP communication interface unit on sheet, the utility model passes through said structure, completely can independently realize hydrogovernor auto testing instrument, general purpose oscialloscope, multi-functional frequency meter, general measurement and control instrument function.
2, the utility model comprises modulus and D/A conversion unit, can realize analog output function by modulus and D/A conversion unit, exports in conjunction with multi-analog, can carry out real-time simulation more flexibly and export configuration.
3, dsp controller of the present utility model to comprise on sheet on enhancement mode capture module, sheet on PWM module, sheet GPIO interface module and TCP communication interface unit on SPI interface module, sheet, achieve each functional unit based on dsp controller to closely cooperate, guarantee that in test, each link sequential is correct.
4, the utility model utilizes DSP technology can realize the non-linear real-time simulation of prime mover portion, can provide the hardware foundation of the non-linear real-time simulation of electric system and network prime mover portion.
5, the utility model comprises TCP communication interface unit, USB joint shortcoming cannot must be pulled out by Auto-reconnect for after the USB interface connection disconnection of existing test emulation device practicality, TCP communication interface unit is adopted to realize TCP communication, the Auto-reconnect that goes offline can be realized, and data transmission is more reliable and more stable.
Accompanying drawing explanation
Fig. 1 is the framed structure schematic diagram of the utility model embodiment.
Fig. 2 is the connection diagram that the utility model embodiment descends in working order with system that is tested or that emulate or device.
Marginal data: 1, DSP control module; 11, dsp controller; 12, static memory; 13, enhancement mode capture module on sheet; 14, PWM module on sheet; 15, SPI interface module on sheet; 16, GPIO interface module on sheet; 17, TCP communication interface unit; 2, frequency input-output unit; 21, frequency signal input conditioning module; 22, frequency signal exports conditioning module; 3, modulus and D/A conversion unit; 31, modulus modulate circuit; 32, digital-to-analogue modulate circuit; 33, modulus and analog-digital chip; 4, On-off signal unit; 41, light-coupled isolation chip; 42, isolation logic process chip; 5, power supply unit; 6, external connecting interface.
Embodiment
As shown in Figure 1, the present embodiment comprises DSP control module 1 based on the hydrogovernor simulation testing device of dsp system, frequency input-output unit 2, modulus and D/A conversion unit 3, On-off signal unit 4, power supply unit 5 and external connecting interface 6, power supply unit 5 respectively with DSP control module 1, frequency input-output unit 2, modulus and D/A conversion unit 3, On-off signal unit 4 is connected, DSP control module 1 comprises interconnective dsp controller 11 and static memory 12, dsp controller 11 comprises enhancement mode on sheet and catches (eCAP) module 13, PWM module 14 on sheet, SPI interface module 15 on sheet, GPIO interface module 16 and TCP communication interface unit 17 on sheet, frequency input-output unit 2 comprises frequency signal input conditioning module 21 and frequency signal exports conditioning module 22, modulus and D/A conversion unit 3 comprise modulus modulate circuit 31, digital-to-analogue modulate circuit 32 and modulus and analog-digital chip 33, on sheet, the input end of enhancement mode capture module 13 is connected with external connecting interface 6 by frequency signal input conditioning module 21, on sheet, the output terminal of PWM module 14 is connected with external connecting interface 6 by frequency signal output conditioning module 22, on sheet, SPI interface module 15 is connected with modulus and analog-digital chip 33 by spi bus, the input end of modulus and analog-digital chip 33 is connected with external connecting interface 6 by modulus modulate circuit 31, the output terminal of modulus and analog-digital chip 33 is connected with external connecting interface 6 by digital-to-analogue modulate circuit 32, on sheet, GPIO interface module 16 is connected with external connecting interface 6 by On-off signal unit 4, dsp controller 11 is connected with TCP communication interface unit 17.In the present embodiment, dsp controller 11 is the dsp controller of band floating-point function, the concrete TMS320F28335 type dsp chip adopting band floating-point function; TCP communication interface unit 17 realizes based on W5300 type ethernet control chip, and the external connection terminal of TCP communication interface unit 17 is provided with isolating transformer; Modulus and analog-digital chip 33 adopt AMC7812 pattern number and digital to analog converter to realize, AMC7812 pattern number and digital to analog converter by analog input unit ADC and analog output cells D AC for integrating, make structure more simple and compact, and independent of alleviating dsp controller 11 outside dsp controller 11 and carry out the burden of modulus and digital-to-analog conversion.
As shown in Figure 1, On-off signal unit 4 comprises the light-coupled isolation chip 41, the isolation logic process chip 42 that connect successively, on sheet, GPIO interface module 16 is connected with external connecting interface 6 by isolation logic process chip 42, light-coupled isolation chip 41 successively, secondary isolation and logical process is carried out, more flexibly and easily by light-coupled isolation chip 41, isolation logic process chip 42 switch amount.In the present embodiment, isolation logic process chip 42 adopts XC95144 type isolation logic process chip to realize.
As shown in Figure 1, external connecting interface 6 is provided with four tunnel frequency input pins, and the input end that four tunnel frequency input pins input conditioning module 21 with frequency signal is respectively connected, and can arrange input frequency signal flexibly as required when testing or emulate; External connecting interface 6 is also provided with four road rate-adaptive pacemaker pins, the output terminal that four road rate-adaptive pacemaker pins export conditioning module 22 with frequency signal is respectively connected, and can arrange output frequency signal flexibly as required when testing or emulate; External connecting interface 6 is also provided with 16 road modulus input pins, 16 road modulus input pins are connected with the input end of modulus modulate circuit 31 respectively, can arrange modulus input signal flexibly as required when testing or emulate; External connecting interface 6 is also provided with eight road modulus output pins, eight road modulus output pins are connected with the output terminal of digital-to-analogue modulate circuit 32 respectively, can modulus be arranged as required flexibly to output signal when testing or emulate; In addition, external connecting interface 6 is also provided with eight road 24V On-off signal pins, eight road 24V On-off signal pins are connected with the input end of light-coupled isolation chip 41 respectively, the output terminal of light-coupled isolation chip 41 is connected with the input end of isolation logic process chip 42 by eight road 3.3V switch outlet lines, can arrange On-off signal signal flexibly as required when testing or emulate.
As shown in Figure 2, in figure, right side is system that is tested or that emulate or device, wherein AD represents tested or the system of emulation or the analog input unit of device, DA represents tested or the system of emulation or the analog output unit of device, IO represents tested or the system of emulation or the On-off signal of device and/or output unit, Freq represents tested or the system of emulation or the frequency of device input or output unit, and Hydro Unit then represents tested or the system of emulation or the speed regulator unit of device.See such as 2 known, according to different tests in working order, the system of the frequency input-output unit 2 of the present embodiment and tested or emulation or the frequency of device are inputed or outputed unit F req be connected, the system of On-off signal unit 4 and tested or emulation or the On-off signal of device and/or output unit IO are connected, modulus modulate circuit 31 is connected with the analog input unit AD of system that is tested or that emulate or device, digital-to-analogue modulate circuit 32 is connected with tested or the system of emulation or the tested of device or the system emulated or device analog output cells D A.Final starting characteristics test, selects automatically to complete and tests or Manual test operation, carries out oscillography and record ripple, can preserve the whole configuration of this test and load configuration when close test next time.Based on the present embodiment, can completely realize alone testing Adaptive System of Water-Turbine Engine static characteristic, dynamic response test, joint is tested, the automatic analysis of experiments of stator simultaneous test and the non-linear real-time simulation of Adaptive System of Water-Turbine Engine, the DSP selecting observing and controlling special and modulus and D/A conversion unit, rate-adaptive pacemaker FO abundant on plate can be realized, frequency measurement FI, output switch parameter DO, On-off signal DI, analog output AO(is compatible voltage analog and current-mode analog quantity simultaneously), analog input AI is compatible voltage analog and current-mode analog quantity simultaneously) resource, realize the multifunctional multiplexing to limited resources, realize the virtual instrument system of a set of resource different application, the non-linear real-time simulation function such as all or part of link in non-linear real-time simulation Adaptive System of Water-Turbine Engine can be realized.
The above is only preferred implementation of the present utility model, protection domain of the present utility model be not only confined to above-described embodiment, and all technical schemes belonged under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (7)
1. the hydrogovernor simulation testing device based on dsp system, it is characterized in that: comprise DSP control module (1), frequency input-output unit (2), modulus and D/A conversion unit (3), On-off signal unit (4), power supply unit (5) and external connecting interface (6), described power supply unit (5) respectively with DSP control module (1), frequency input-output unit (2), modulus and D/A conversion unit (3), On-off signal unit (4) is connected, described DSP control module (1) comprises interconnective dsp controller (11) and static memory (12), described dsp controller (11) comprises enhancement mode capture module (13) on sheet, PWM module (14) on sheet, SPI interface module (15) on sheet, GPIO interface module (16) and TCP communication interface unit (17) on sheet, described frequency input-output unit (2) comprises frequency signal input conditioning module (21) and frequency signal exports conditioning module (22), described modulus and D/A conversion unit (3) comprise modulus modulate circuit (31), digital-to-analogue modulate circuit (32) and modulus and analog-digital chip (33), the input end of described upper enhancement mode capture module (13) inputs conditioning module (21) by frequency signal and is connected with external connecting interface (6), the output terminal of described upper PWM module (14) exports conditioning module (22) by frequency signal and is connected with external connecting interface (6), described upper SPI interface module (15) is connected with modulus and analog-digital chip (33) by spi bus, the input end of described modulus and analog-digital chip (33) is connected with external connecting interface (6) by modulus modulate circuit (31), the output terminal of described modulus and analog-digital chip (33) is connected with external connecting interface (6) by digital-to-analogue modulate circuit (32), described upper GPIO interface module (16) is connected with external connecting interface (6) by On-off signal unit (4), described dsp controller (11) is connected with TCP communication interface unit (17).
2. the hydrogovernor simulation testing device based on dsp system according to claim 1, it is characterized in that: described On-off signal unit (4) comprises the light-coupled isolation chip (41), the isolation logic process chip (42) that connect successively, described upper GPIO interface module (16) is connected with external connecting interface (6) by isolation logic process chip (42), light-coupled isolation chip (41) successively.
3. the hydrogovernor simulation testing device based on dsp system according to claim 2, it is characterized in that: described external connecting interface (6) is provided with four tunnel frequency input pins, described four tunnel frequency input pins input conditioning module (21) respectively input end with frequency signal is connected.
4. the hydrogovernor simulation testing device based on dsp system according to claim 3, it is characterized in that: described external connecting interface (6) is also provided with four road rate-adaptive pacemaker pins, described four road rate-adaptive pacemaker pins export conditioning module (22) respectively output terminal with frequency signal is connected.
5. the hydrogovernor simulation testing device based on dsp system according to claim 4, it is characterized in that: described external connecting interface (6) is also provided with 16 road modulus input pins, described 16 road modulus input pins are connected with the input end of modulus modulate circuit (31) respectively.
6. the hydrogovernor simulation testing device based on dsp system according to claim 5, it is characterized in that: described external connecting interface (6) is also provided with eight road modulus output pins, described eight road modulus output pins are connected with the output terminal of digital-to-analogue modulate circuit (32) respectively.
7. the hydrogovernor simulation testing device based on dsp system according to claim 6, it is characterized in that: described external connecting interface (6) is also provided with eight road 24V On-off signal pins, described eight road 24V On-off signal pins are connected with the input end of light-coupled isolation chip (41) respectively, and the output terminal of described light-coupled isolation chip (41) is connected with the input end of isolation logic process chip (42) by eight road 3.3V switch outlet lines.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106771698A (en) * | 2016-07-05 | 2017-05-31 | 天津电气科学研究院有限公司 | A kind of test apparatus for hydrogovernor |
| CN108255069A (en) * | 2016-12-29 | 2018-07-06 | 华中科技大学 | A kind of electric system-Hydropower Unit associative simulation apparatus and method |
| CN110174572A (en) * | 2019-06-12 | 2019-08-27 | 南方电网科学研究院有限责任公司 | Method, system and device for testing speed regulator of generator and readable storage medium |
| CN113705004A (en) * | 2021-08-30 | 2021-11-26 | 中国电子科技集团公司第三十八研究所 | Real-time system behavior level software simulation method suitable for DSP |
-
2014
- 2014-12-22 CN CN201420818052.5U patent/CN204270144U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106771698A (en) * | 2016-07-05 | 2017-05-31 | 天津电气科学研究院有限公司 | A kind of test apparatus for hydrogovernor |
| CN108255069A (en) * | 2016-12-29 | 2018-07-06 | 华中科技大学 | A kind of electric system-Hydropower Unit associative simulation apparatus and method |
| CN110174572A (en) * | 2019-06-12 | 2019-08-27 | 南方电网科学研究院有限责任公司 | Method, system and device for testing speed regulator of generator and readable storage medium |
| CN113705004A (en) * | 2021-08-30 | 2021-11-26 | 中国电子科技集团公司第三十八研究所 | Real-time system behavior level software simulation method suitable for DSP |
| CN113705004B (en) * | 2021-08-30 | 2023-06-13 | 中国电子科技集团公司第三十八研究所 | Real-time system behavior level software simulation method suitable for DSP |
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