CN109101008A - The test method of delay is communicated and responded between main control PLC and current transformer - Google Patents
The test method of delay is communicated and responded between main control PLC and current transformer Download PDFInfo
- Publication number
- CN109101008A CN109101008A CN201710476462.4A CN201710476462A CN109101008A CN 109101008 A CN109101008 A CN 109101008A CN 201710476462 A CN201710476462 A CN 201710476462A CN 109101008 A CN109101008 A CN 109101008A
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- CN
- China
- Prior art keywords
- current transformer
- blower
- delay
- plc
- test method
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Classifications
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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
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
-
- 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
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24065—Real time diagnostics
Abstract
The invention discloses the test methods that delay is communicated and responded between a kind of main control PLC and current transformer, wherein blower plays machine, into power generation mode；According to wind regime, it is a setting value that blower, which is limited power to variable pitch angle, and blower is in the full state under limit power；Air-blower control mode is permanent torque control；By giving one step signal of current transformer, blower is made to be superimposed an additional torque value；Excitation and the delay of feedback for recording step signal obtain the communication and response delay of current transformer.The test that delay is communicated and responded between main control PLC of the present invention and current transformer inspires the signal of a step torque when blower torque is stablized, the delay by test current transformer to step response, judges current transformer communication and response delay.
Description
Technical field
The present invention relates to communicate and respond between a kind of fan test method more particularly to a kind of main control PLC and current transformer
The test method of delay.
Background technique
Currently, current transformer and the communication bus of master control mainly have RS232 and PROFIBUS, in the majority with PROFIBUS at present,
Wherein for the communication delay test of PROFIBUS bus, method is mainly the tool master in the way of software and combination of hardware
Have: profiscript, NETTEST II etc..Such product mainly passes through simulation main website crawl communication packet, in protocol layer pair
Communication data is tested and is analyzed, and function is relatively comprehensive and powerful.
For the relatively older blower of system in existing market, the real-time and accuracy of control need to be improved, realizes master control
The upgrading of control system, in conjunction with actual field condition, on the basis of not increasing cost and keeping original system framework, to master control
Communication and response delay with current transformer carry out test calibration, and root determines therefrom that control parameter, and master control system is realized in optimal control
The update and upgrading of system.
The most important functions that master control control needs current transformer to cooperate are exactly torque reference, it is therefore desirable to directly test torque
Response delay, to ensure the validity of data.And in blower actual motion, the variation of torque moment, after full hair, torque is begun again
It remains unchanged eventually, is unable to judge accurately its response delay.
Therefore, those skilled in the art is dedicated to developing a kind of by step signal, judges current transformer communication and response
Delay.
Summary of the invention
In view of the above drawbacks of the prior art, technical problem to be solved by the invention is to provide a kind of main control PLC with
The test method of delay is communicated and responded between current transformer, wherein blower plays machine, into power generation mode；According to wind regime, by blower
Limiting power to variable pitch angle is a setting value, and blower is in the full state under limit power；Air-blower control mode is permanent torque control
System；By giving one step signal of current transformer, blower is made to be superimposed an additional torque value；Record the excitation of step signal and anti-
Feedback delay obtains the communication and response delay of current transformer.
Preferably, PLC, which controls current transformer by communication module, controls air-blower control mode permanent torque.
Preferably, communication module includes the current transformer end with the main control end communication module of PLC communication and with current transformer communication
Communication module；Main control end communication module is communicated with current transformer communication module.
Preferably, the setting value of variable pitch angle is set in 5 degree.
Preferably, PLC connection computer, computer are grabbed and are handled to the data of PLC.
Preferably, current transformer step signal is given by PLC, communication module, computer records step signal.
Preferably, LC obtains the torque variation of current transformer, and computer records excitation and the delay of feedback of step signal.
The test method of delay is communicated and responded between main control PLC of the present invention and current transformer compared to the prior art, is solved
Old-fashioned fan test accuracy low problem inspires the signal of a step torque, passes through survey when blower torque is stablized
Delay of the current transformer to step response is tried, judges current transformer communication and response delay.The given method of step torque is then to combine
Practical wind regime when test, using limit power functions and permanent torque control model, guarantee torque stablize whithin a period of time it is constant,
Again by software, the torque value for being transmitted to current transformer is superimposed an additional torque value manually, realizes that the step of torque becomes with this
Change.
It is described further below with reference to technical effect of the attached drawing to design of the invention, specific structure and generation, with
It is fully understood from the purpose of the present invention, feature and effect.
Detailed description of the invention
Fig. 1 is flow chart of the invention.
Specific embodiment
As shown, Fig. 1 is flow chart of the invention, communicate between a kind of main control PLC and current transformer and response delay
Test method, wherein blower plays machine, into power generation mode；According to wind regime, it is a setting that blower, which is limited power to variable pitch angle,
Value, blower are in the full state under limit power；Air-blower control mode is permanent torque control；By giving current transformer one step letter
Number, so that blower is superimposed an additional torque value；Record step signal excitation and delay of feedback, obtain current transformer communication and
Response delay.
Further, PLC, which controls current transformer by communication module, controls air-blower control mode permanent torque.
Further, communication module includes the current transformer with the main control end communication module of PLC communication and with current transformer communication
End communication module；Main control end communication module (main website) is communicated with current transformer communication module (slave station).
Further, the setting value of variable pitch angle is set in 5 degree.
Further, PLC connection computer (master control), computer are grabbed and are handled to the data of PLC.
Specifically, computer can be mobile PC, mobile PC synchronously control PLC starts to test, and carries out data using Trace
It records and stores, office EXCEL software is combined by mobile PC, carries out data parsing, and judges communication delay.
Specifically, main control PLC, which receives current transformer information and sends instruction to current transformer, passes through PROFIBUS communication module
Transmitting, and the transmission of the data of PROFIBUS communication module and main control PLC is then the extension card slot that PROFIBUS module is inserted in PLC
In, and pass through the data interaction of X2X communication realization and PLC.PROFIBUS communication main website X20IF1072: power 0.79W, it is maximum
Transmission rate 1Mbit/s.
Further, current transformer step signal is given by PLC, communication module, computer records step signal.
Further, PLC obtains the torque variation of current transformer, and computer records excitation and the delay of feedback of step signal.
The preferred embodiment of the present invention has been described in detail above.It should be appreciated that those skilled in the art without
It needs creative work according to the present invention can conceive and makes many modifications and variations.Therefore, all technologies in the art
Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Technical solution, all should be within the scope of protection determined by the claims.
Claims (7)
1. the test method of delay is communicated and responded between a kind of main control PLC and current transformer, which is characterized in that blower plays machine, into
Enter power generation mode；According to wind regime, it is a setting value that blower, which is limited power to variable pitch angle, and blower is in the full hair-like under limit power
State；Air-blower control mode is permanent torque control；By giving one step signal of current transformer, blower is made to be superimposed an additional torque
Value；Excitation and the delay of feedback for recording step signal obtain the communication and response delay of current transformer.
2. test method as described in claim 1, which is characterized in that PLC, which controls current transformer by communication module, makes blower control
Molding formula is permanent torque control.
3. test method as claimed in claim 2, which is characterized in that communication module includes the master control end communication with PLC communication
Module and the current transformer end communication module communicated with current transformer；Main control end communication module is communicated with current transformer communication module.
4. test method as claimed in claim 2, which is characterized in that the setting value of variable pitch angle is set in 5 degree.
5. test method as claimed in claim 3, which is characterized in that PLC connection computer, computer to the data of PLC into
Row crawl and processing.
6. test method as claimed in claim 5, which is characterized in that current transformer step signal is given by PLC, communication module,
Computer records step signal.
7. test method as claimed in claim 6, which is characterized in that PLC obtains the torque variation of current transformer, computer record
The excitation of step signal and delay of feedback.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710476462.4A CN109101008A (en) | 2017-06-21 | 2017-06-21 | The test method of delay is communicated and responded between main control PLC and current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710476462.4A CN109101008A (en) | 2017-06-21 | 2017-06-21 | The test method of delay is communicated and responded between main control PLC and current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109101008A true CN109101008A (en) | 2018-12-28 |
Family
ID=64796124
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710476462.4A Pending CN109101008A (en) | 2017-06-21 | 2017-06-21 | The test method of delay is communicated and responded between main control PLC and current transformer |
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| CN105717450A (en) * | 2014-12-05 | 2016-06-29 | 国家电网公司 | Assessment method for variable pitch driving capability in low voltage ride through process |
| CN106353679A (en) * | 2016-09-13 | 2017-01-25 | 沈阳华创风能有限公司 | Testing system for variable pitch system of megawatt wind turbine generator |
| CN206074768U (en) * | 2016-09-13 | 2017-04-05 | 沈阳华创风能有限公司 | A kind of test system of megawatt-level wind set pitch control system |
| CN106873464A (en) * | 2017-03-22 | 2017-06-20 | 深圳市中航世星科技有限公司 | A kind of airborne distributed parallel computing environment of restructural and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101498761A (en) * | 2008-02-02 | 2009-08-05 | 北京芯慧同用微电子技术有限责任公司 | Test method for step response performance of phase-locked loop system |
| CN102520716A (en) * | 2011-12-29 | 2012-06-27 | 浙江海得新能源有限公司 | Communication test method used between current transformer and main control system |
| JP2013255083A (en) * | 2012-06-06 | 2013-12-19 | Nippon Telegr & Teleph Corp <Ntt> | Transmission control method and transmission device |
| CN102818951A (en) * | 2012-07-27 | 2012-12-12 | 国电联合动力技术有限公司 | Method, system and device for measuring performance index of wind power unit converter on line |
| CN203259351U (en) * | 2013-04-12 | 2013-10-30 | 天津瑞源电气有限公司 | Device for testing control system and pitch system of wind turbine generator set |
| CN104713575A (en) * | 2013-12-11 | 2015-06-17 | 中国航空工业第六一八研究所 | Method for testing frequency characteristic of closed loop fiber optic gyroscope |
| CN104297685A (en) * | 2014-10-27 | 2015-01-21 | 国家电网公司 | Method for detecting parameters of double-fed wind generating set |
| CN105717450A (en) * | 2014-12-05 | 2016-06-29 | 国家电网公司 | Assessment method for variable pitch driving capability in low voltage ride through process |
| CN106353679A (en) * | 2016-09-13 | 2017-01-25 | 沈阳华创风能有限公司 | Testing system for variable pitch system of megawatt wind turbine generator |
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| CN106873464A (en) * | 2017-03-22 | 2017-06-20 | 深圳市中航世星科技有限公司 | A kind of airborne distributed parallel computing environment of restructural and method |
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Application publication date: 20181228 |