CN108167111A - Machine unit speed regulating device based Cb Failure Protection - Google Patents
Machine unit speed regulating device based Cb Failure Protection Download PDFInfo
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- CN108167111A CN108167111A CN201710751266.3A CN201710751266A CN108167111A CN 108167111 A CN108167111 A CN 108167111A CN 201710751266 A CN201710751266 A CN 201710751266A CN 108167111 A CN108167111 A CN 108167111A
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- regulating device
- speed regulating
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- 230000004224 protection Effects 0.000 title claims abstract description 32
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 19
- 238000004891 communication Methods 0.000 claims abstract description 11
- 230000009471 action Effects 0.000 claims description 18
- 230000006870 function Effects 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims 1
- 238000004088 simulation Methods 0.000 claims 1
- 238000013500 data storage Methods 0.000 description 4
- 230000014759 maintenance of location Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000007726 management method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- KHMVXSQLPUNRCF-UHFFFAOYSA-N DL-Adalin Natural products C1CCC2CC(=O)CC1(CCCCC)N2 KHMVXSQLPUNRCF-UHFFFAOYSA-N 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000009711 regulatory function Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B15/00—Controlling
- F03B15/02—Controlling by varying liquid flow
- F03B15/04—Controlling by varying liquid flow of turbines
- F03B15/06—Regulating, i.e. acting automatically
- F03B15/18—Regulating, i.e. acting automatically for safety purposes, e.g. preventing overspeed
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
The invention discloses a kind of machine unit speed regulating device based Cb Failure Protections; include processor, the processor is connected with On-off signal unit, analog input unit, switch amount output unit, communication interface, Flexible Interface Card, power supply unit and storage unit by data/address bus；Unit data are handled by using On-off signal unit, analog input unit and processor, and data output is carried out by switch amount output unit, achieve the purpose that unit is safe to use and ensure worker safety.
Description
Technical field
The present invention relates to adjust failure protection field, and in particular to machine unit speed regulating device based Cb Failure Protection.
Background technology
After governor failure, regulatory function is lost, main control valve tripping, servomotor tripping, guide vane opening can not adjust, when
During load reduction, there is generating unit speed raising, the machine of being susceptible to is overrun phenomenon, unit failure occurs, it is therefore desirable to install speed governing additional
Device based Cb Failure Protection when there is governor failure, is acted in inlet valve or emergency distributing valve.
Invention content
In order to solve the above technical problems, the present invention proposes machine unit speed regulating device based Cb Failure Protection, to reach unit use
Safety and the purpose for ensureing worker safety.
In order to achieve the above objectives, technical scheme is as follows：
A kind of machine unit speed regulating device based Cb Failure Protection, includes processor, and the processor is connected with by data/address bus
On-off signal unit, analog input unit, switch amount output unit, communication interface, Flexible Interface Card, power supply unit and
Storage unit.
The present invention is handled unit data using On-off signal unit, analog input unit and processor, and
Data output is carried out by switch amount output unit, achieve the purpose that unit is safe to use and ensures worker safety.
It is moved as preference, the On-off signal unit has been gone up for generator breaker auxiliary contact, unit zero load
Make contact, the main information with travel switch inputs；The input of the analog input unit guide vane travel position analog quantity；It is described
Switch amount output unit is used to export On-off signal unit by processor treated data；The Flexible Interface Card is used
It is exported in analog input unit through processor treated data；The communication interface is communicated by RS232 with outside realization.
As preference, the On-off signal unit and analog input unit are inputted using I/O, protection act uses
Relay exports.By the way that On-off signal unit and analog input unit are inputted using I/O, protection act uses relay
Output, using Phototube Coupling and filtering, ensure that action accuracy.
As preference, the storage unit includes system program memory, user program memory and operational data
Memory, the storage system program provide system diagnostics, command interpretation, the management of function subprogram calling, logical operation, lead to
The functions such as letter and various parameters setting；Application program is solidificated in read-only memory EPROM by the user program memory, full
Program is not lost in sufficient power down；The operational data memory adapts to arbitrary access.As output relay, auxiliary relay, determine
When the logical devices such as device, counter memory block.By the way that storage unit is included system program memory, user program stores
Device and operational data memory realize effective storage of data, also realize the reasonability of data storage.
The invention has the advantages that：
1. the present invention is handled unit data using On-off signal unit, analog input unit and processor,
And data output is carried out by switch amount output unit, achieve the purpose that unit is safe to use and ensures worker safety.
By the way that On-off signal unit and analog input unit are inputted using I/O, 2. protection act uses the present invention
Relay exports, and using Phototube Coupling and filtering, ensure that action accuracy.
3. the present invention is deposited by the way that storage unit is included system program memory, user program memory and operational data
Reservoir realizes effective storage of data, also realizes the reasonability of data storage.
Description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described.
Fig. 1 is the system schematic of machine unit speed regulating device based Cb Failure Protection disclosed by the embodiments of the present invention；
Fig. 2 is the connection diagram of machine unit speed regulating device based Cb Failure Protection disclosed by the embodiments of the present invention；、
Fig. 3 is the structure diagram of machine unit speed regulating device based Cb Failure Protection disclosed by the embodiments of the present invention；
It is main with tripping OUT action timing diagrams in the embodiment of the present invention of Fig. 4 positions；
Corresponding component title of the number represented by with letter in figure：
1. 2. data/address bus of processor, 3. On-off signal unit, 4. analog input unit
5. 6. communication interface of switch amount output unit, 7. Flexible Interface Card, 8. power supply unit
9. 10. user program memory of system program memory, 11. operational data memory.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes.
The present invention provides machine unit speed regulating device based Cb Failure Protection, operation principle is by using On-off signal list
Member, analog input unit and processor handle unit data, and carry out data output by switch amount output unit, reach
To the unit purpose safe to use with guarantee worker safety.
With reference to embodiment and specific embodiment, the present invention is described in further detail.
As Figure 1-Figure 4, a kind of machine unit speed regulating device based Cb Failure Protection, includes processor 1, and the processor passes through
Data/address bus connection 2 has On-off signal unit 3, analog input unit 4, switch amount output unit 5, communication interface 6, intelligence
Interface module 7, power supply unit 8 and storage unit.
The present invention by using On-off signal unit, analog input unit and processor to unit data at
Reason, and data output is carried out by switch amount output unit, achieve the purpose that unit is safe to use and ensures worker safety.
It is worth noting that, the On-off signal unit has been used for generator breaker auxiliary contact, unit zero load
Action connection point, the main information with travel switch input；The input of the analog input unit guide vane travel position analog quantity；Institute
Switch amount output unit is stated for On-off signal unit to be exported by processor treated data；The Flexible Interface Card
It is exported for analog input unit through processor treated data；The communication interface is led to by RS232 and external realize
Letter.
It is worth noting that, the On-off signal unit and analog input unit are exported using relay.Passing through will
On-off signal unit and analog input unit are inputted using I/O, and protection act is exported using relay, using Phototube Coupling
And filtering, it ensure that action accuracy.
It is worth noting that, the storage unit includes system program memory 9, user program memory 10 and work
Data storage 11, the storage system program provide system diagnostics, command interpretation, the management of function subprogram calling, logic fortune
The functions such as calculation, communication and various parameters setting；Application program is solidificated in read-only memory by the user program memory
In EPROM, meet power down and do not lose program；The operational data memory adapts to arbitrary access.As output relay, auxiliary
Help the memory block of the logical devices such as relay, timer, counter.By by storage unit include system program memory,
User program memory and operational data memory realize effective storage of data, also realize the reasonability of data storage.
The specifically used step of the present invention is as follows：Again as Figure 1-Figure 4, outside is opened into access terminal, outside open into
Have：It is main to match tripping stroke contact, the zero load of guide vane stroke with upper contact, generator breaker normal opened contact, generating unit speed 115%
Ne contacts, unit are overrun 145%ne contacts, unit failure shutdown action contact and guide vane servomotor displacement (4~20mA).
Also generating unit speed (115%ne＆145%ne) can be accessed with analog quantity.
Device is shut down according to unit failure, in load dump test, machine unit speed regulating device servomotor acting characteristic, and setting master, which matches, to be refused
The open hour of dynamic stroke contact action.
In panel arrangement equipped with 9 buttons, 1 involution button, 2 indicator lights；
RES keys：Signal return key for the event picture of involution band holding, signal lamp and outputs relay；
REC keys：ESC Escape, for returning to previous menu；
+ ,-key：For changing parameter and definite value, moved back including data definite value and the throwing of soft pressing plate；
Arrow key：Left and right arrow is cursor movement key, for transverse shifting cursor；Down arrows are used for same rank not
Same menu item；It is used to program simultaneously；
ENT keys：For acknowledgement key, while there is the memory for not losing the definite value deposit power down of modification；
2 indicator lights：1 is device running indicator, and 1 is device action indicator light；
Device output contact access LCU for generator set SOE as unit tripping open into.
The workflow of the device is for example specific as follows：
The present invention is connect in implementing based on PLC control modes, the unloaded above action of generator breaker auxiliary contact, unit
Point, the main On-off signals such as travel switch of matching are inputted by " On-off signal unit "；Guide vane travel position analog quantity is by " analog quantity
Input unit " inputs；OUT is directly exported by " switch amount output unit "；Guide vane travel position analog quantity changes by " interface mould
Block " compares output, and correspondence with foreign country realizes that RS232 communicates by " communication interface "." I/O unit " claims I/O units or I/O
Module is connecting component between PLC and industrial site.PLC can detect the various numbers of controlled device by input interface
According to the foundation controlled using these data as PLC control target；PLC will be handled further through output interface and be tied simultaneously
Fruit gives control target LCU for generator set, to realize that generator protection trips.
With reference to Fig. 4, the specific motion analysis of machine unit speed regulating device based Cb Failure Protection provided by the invention is as follows：【In Fig. 3：
After t+ △ t--- add △ t nargin, as main with tripping setting time (s)；
T1---- governor failure protection time-delay actions (s)】
(1) when accident causes generator outlet circuit breaker trip removal of load, though generating unit speed rises 115%ne, detection
It is less than setting value to the variation of guide vane stroke, then is latched RES, the output of OUT relays, then governor failure protection action.
(2) when the normal load carrying of unit, when master is failure to actuate with position contact, and during retention time >=t+ △ t, OUT
Output, and generating unit speed >=115%ne, unit guide vane be when (DWK closure) is met the requirements more than zero load, through t1 delay failure guarantors
Shield acts.
(3) when starting accidental shutdown flow, when master is failure to actuate with position contact, and during retention time >=t+ △ t, OUT is defeated
Go out, and when generating unit speed >=115%ne is met the requirements, through t1 delay failure protection actions；
(4) when starting accidental shutdown flow, master is failure to actuate with position contact, and during retention time >=t+ △ t at this time, OUT
Output, but since generating unit speed ＜ 115%ne or guide vane are more than zero load, failure protection is failure to actuate.
(5) when unit is in accident overrun condition (generating unit speed >=140%ne), the action of 115%ne contacts is main at this time to match
Position contact is failure to actuate, and during retention time >=t+ △ t, OUT outputs, through t1 delay failure protection actions.
By above mode, machine unit speed regulating device based Cb Failure Protection provided by the present invention is defeated by using switching value
Enter unit, analog input unit and processor to handle unit data, and defeated by switch amount output unit progress data
Go out, achieve the purpose that unit is safe to use and ensures worker safety, this patent has action message, without dead zone, adaline
Under the different operating modes of group, especially accident conditions increase before and after the action of guide vane analog quantity fiducial value to ensure the action message of device, from
It fundamentally overcomes and uses unit servomotor more than zero load as the simplex criteria of barring condition at present.
Above-described is only the preferred embodiment of machine unit speed regulating device based Cb Failure Protection disclosed in this invention, should
It points out, for those of ordinary skill in the art, without departing from the concept of the premise of the invention, if can also make
Dry modification and improvement, these belong to protection scope of the present invention.
Claims (4)
1. a kind of machine unit speed regulating device based Cb Failure Protection, which is characterized in that include processor, the processor is total by data
Line is connected with On-off signal unit, analog input unit, switch amount output unit, communication interface, Flexible Interface Card, electricity
Source unit and storage unit.
2. machine unit speed regulating device based Cb Failure Protection according to claim 1, which is characterized in that the On-off signal unit
Action connection point has been gone up for generator breaker auxiliary contact, unit zero load, the main information with travel switch inputs；The simulation
Measure the input of input unit guide vane travel position analog quantity；The switch amount output unit be used for by On-off signal unit by
Manage the output of device treated data；Through processor, treated that data are defeated for analog input unit for the Flexible Interface Card
Go out；The communication interface is communicated by RS232 with outside realization.
3. machine unit speed regulating device based Cb Failure Protection according to claim 1, which is characterized in that the On-off signal unit
It is inputted with analog input unit using I/O, protection act is exported using relay.
4. machine unit speed regulating device based Cb Failure Protection according to claim 1, which is characterized in that the storage unit includes
System program memory, user program memory and operational data memory, the storage system program, provide system diagnostics,
The functions such as management, logical operation, communication and various parameters setting are called in command interpretation, function subprogram；The user program is deposited
Application program is solidificated in read-only memory EPROM by reservoir, is met power down and is not lost program；The operational data memory,
Adapt to arbitrary access.Memory block as logical devices such as output relay, auxiliary relay, timer, counters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710751266.3A CN108167111A (en) | 2017-08-28 | 2017-08-28 | Machine unit speed regulating device based Cb Failure Protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710751266.3A CN108167111A (en) | 2017-08-28 | 2017-08-28 | Machine unit speed regulating device based Cb Failure Protection |
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| Publication Number | Publication Date |
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| CN108167111A true CN108167111A (en) | 2018-06-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710751266.3A Pending CN108167111A (en) | 2017-08-28 | 2017-08-28 | Machine unit speed regulating device based Cb Failure Protection |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06317244A (en) * | 1993-04-30 | 1994-11-15 | Toshiba Eng Co Ltd | Speed control device for speed governor in water turbine generator |
| CN201794708U (en) * | 2010-04-13 | 2011-04-13 | 国网电力科学研究院 | Intelligent hand-operated closed-loop control device for speed regulating system of hydroelectric generating unit |
| CN202531349U (en) * | 2012-03-20 | 2012-11-14 | 四川中鼎智能技术有限公司 | PLC (programmable logic controller)-based hydraulic generator protection device |
| CN203050986U (en) * | 2012-12-29 | 2013-07-10 | 广西桂冠电力股份有限公司大化水力发电总厂 | Over-speed control system of water turbine |
| CN104791187A (en) * | 2015-04-08 | 2015-07-22 | 武汉四创自动控制技术有限责任公司 | Water-turbine adjustment system and method capable of forecasting health status |
| CN205260207U (en) * | 2015-12-23 | 2016-05-25 | 四川省电力工业调整试验所 | Prevent that governor of hydraulic turbine owner from joining in marriage control system who refuses |
| CN207245923U (en) * | 2017-08-28 | 2018-04-17 | 福建省水利水电勘测设计研究院 | Machine unit speed regulating device based Cb Failure Protection |
-
2017
- 2017-08-28 CN CN201710751266.3A patent/CN108167111A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06317244A (en) * | 1993-04-30 | 1994-11-15 | Toshiba Eng Co Ltd | Speed control device for speed governor in water turbine generator |
| CN201794708U (en) * | 2010-04-13 | 2011-04-13 | 国网电力科学研究院 | Intelligent hand-operated closed-loop control device for speed regulating system of hydroelectric generating unit |
| CN202531349U (en) * | 2012-03-20 | 2012-11-14 | 四川中鼎智能技术有限公司 | PLC (programmable logic controller)-based hydraulic generator protection device |
| CN203050986U (en) * | 2012-12-29 | 2013-07-10 | 广西桂冠电力股份有限公司大化水力发电总厂 | Over-speed control system of water turbine |
| CN104791187A (en) * | 2015-04-08 | 2015-07-22 | 武汉四创自动控制技术有限责任公司 | Water-turbine adjustment system and method capable of forecasting health status |
| CN205260207U (en) * | 2015-12-23 | 2016-05-25 | 四川省电力工业调整试验所 | Prevent that governor of hydraulic turbine owner from joining in marriage control system who refuses |
| CN207245923U (en) * | 2017-08-28 | 2018-04-17 | 福建省水利水电勘测设计研究院 | Machine unit speed regulating device based Cb Failure Protection |
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