CN202183751U - Microcomputer double-channel three-in-one control panel - Google Patents
Microcomputer double-channel three-in-one control panel Download PDFInfo
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- CN202183751U CN202183751U CN2011202960727U CN201120296072U CN202183751U CN 202183751 U CN202183751 U CN 202183751U CN 2011202960727 U CN2011202960727 U CN 2011202960727U CN 201120296072 U CN201120296072 U CN 201120296072U CN 202183751 U CN202183751 U CN 202183751U
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- 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
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Abstract
A microcomputer double-channel three-in-one control panel is composed of a control panel, a control system and an excitation system. The control system comprises a microcomputer excitation integration controller, an electrically-operated valve control circuit, a signal collection input circuit and an RS485 communication interface circuit. The excitation system comprises an automatic exciting circuit, a multifunctional voltage current protection circuit, a microcomputer and grid connection circuit, a closing circuit and an opening circuit. The microcomputer double-channel three-in-one control panel is a microcomputer integration automatic monitoring device which has a generator control and protection function, an automatic quasi-synchronization function, a microcomputer excitation function, a microcomputer frequency modulation and power adjustment function, a function of a microcomputer LED digital display instrument, and a function of microcomputer fault detection and protection. The microcomputer double-channel three-in-one control panel is also provided with a double-channel operation system of microcomputer control and traditional control, can be operated normally for power generation even if faults of a microcomputer channel occurs, and is much higher in reliability and cost performance compared with the prior art. The microcomputer double-channel three-in-one control panel is suitable for the control of 400V low-voltage generating sets in rural areas.
Description
Technical field
The utility model relates to the three-in-one control flow of a kind of microcomputer binary channels, belongs to technical field of automatic control.
Background technology
The rural area 400V low voltage generator group control appliance overwhelming majority still follows consistent pattern in decades at present, adopts conventional retrospective installation, because automaticity is low; Not only power generating quality is relatively poor; And volume is big, and complicated operation has been brought into play not due productivity effect; And conventional equipment lacks computer communication interface can't form the automatically-monitored and management of uniform and effective.
In order to satisfy the demand of vast rural small hydropower, for rural small hydropower low voltage generator system, it is higher to press for a kind of automaticity, the automatically-monitored preferably and management system of power generating quality.
Summary of the invention
The purpose of the utility model is, discloses a kind of collection generator control and protection, full-automatic quasi-synchronization paralleling, microcomputer excitation, the Power Regulation of microcomputer frequency modulation, microcomputer LED read out instrument, microcomputer fault detect and be protected in the microcomputer comprehensive automation supervising device of one.
The technical scheme of the utility model is that the three-in-one control flow of the utility model microcomputer binary channels is made up of control flow, control system, excitation system.Wherein control system comprises microcomputer excitation ICU, electrically operated valve control circuit, signals collecting input circuit and RS485 communication interface circuit; Excitation system comprises automatic excitation circuit, multifunctional electric current protecting circuit, microcomputer degeneracy net circuit, combined floodgate circuit, separating brake circuit.
The generator excitation major loop links to each other with microcomputer excitation ICU; Obtain start pulse signal and other input signals from the generator excitation major loop; Microcomputer excitation ICU links to each other with RS485 communication interface circuit with automatic excitation circuit, multifunctional electric current protecting circuit, microcomputer degeneracy net circuit, combined floodgate circuit, separating brake circuit, signals collecting input circuit respectively, respectively these circuit is controlled after treatment with other input signals according to the start pulse signal that generator excitation sends.Other input signals comprise, generator voltage, electric current, frequency, exciting voltage, exciting current, line voltage, mains frequency, generator speed.
The utility model control panel installed 12 4 LED digital meter, respectively, show the three-phase voltage, phase current, three-phase active power, three-phase reactive power, power factor, frequency, excitation voltage, excitation current; control panel also equipped with 8 analog board table, respectively, show the voltage, current, three-phase active power, power factor, frequency, excitation current, grid voltage, grid frequency.
The utility model is provided with the RS485 communication interface, by the communications protocol and the upper machine communication of regulation.All parameters all can show at host computer, the operations staff can be on the backstage supervisory work generator, realize unmanned or few man on duty.
The beneficial effect of the utility model and prior art comparison is; The utility model is a collection generator control and protection; Full-automatic quasi-synchronization paralleling; Microcomputer excitation, the Power Regulation of microcomputer frequency modulation, microcomputer LED read out instrument, microcomputer fault detect and be protected in the microcomputer comprehensive automation supervising device of one.It has and the host computer interface, can select the monitoring of remote monitoring or terrain.A generating set is mixed one side WZK screen, just cooperates with background computer and can realize simple and practical power station automation system.It also has system controlled by computer and tradition control binary channels operating system, when the microcomputer channel failure, also can normal power generation move, and its reliability and cost performance all want high more than conventional art.
The utility model is applicable to the control of rural area 400V low voltage generator group.
Description of drawings
Fig. 1 is the utility model structured flowchart;
Fig. 2 is the three-in-one screen electrical schematic diagram of the utility model embodiment microcomputer binary channels all-in-one;
Fig. 3 is the three-in-one panel plate of a utility model embodiment microcomputer binary channels all-in-one layout plan;
Picture in picture number expression: 11 is the quick closing valve relay; 2 report to the police; 3 is subsequent use; 4 is subsequent use; 5 is meritorious for subtracting; 6 is meritorious for adding; 7 is COM; 8 is fast fusing; 9 is that bearing or winding are overheated; 10 main switch positions; 11 is excitation reduction; 12 for adding excitation; 13 is subsequent use; 14 is subsequent use; 15 follow the tracks of; 16 is generator; 17 is threephase potential transformer; 18 is threephase current transformer; 19 is electrical network; LQ is the generator amature winding;
101 row are expressed as respectively from left to right: A.B phase voltage, C.A net voltage, B.C phase voltage, A phase current, B phase current, C phase current; 102 row are expression respectively from left to right: active power, reactive power, power factor, frequency, exciting voltage, exciting current; 103 row are expressed as respectively from left to right: fan indication, the indication of A commutating phase, the indication of B commutating phase, the indication of C commutating phase, add excitation, excitation reduction, add meritorious, subtract meritorious; 104 row are expressed as respectively from left to right: the voltage that is incorporated into the power networks, microcomputer voltage, aanalogvoltage, microcomputer main power source, microcomputer stand-by power supply, digital display meter power supply; 105 are expressed as knife switch; 106 row are expressed as respectively from left to right: current/voltage protection, simulation excitation unit, microcomputer grid-connecting apparatus; 107 row are expression respectively from left to right: separating brake indication, combined floodgate indication, ac de-excitation; 108 row are expressed as respectively from left to right: manual brake separating, closing by hand, energy storage, excitation switch, the test switch that puts into operation, is incorporated into the power networks; 109 row are expressed as respectively from left to right: electric gate valve is opened, electric gate valve closes, speed regulator is started shooting, speed regulator shutdown, emergency shutdown, promptly reset.
Embodiment
The embodiment of the utility model is as shown in Figure 2, is the three-in-one screen electrical schematic diagram of the utility model embodiment microcomputer binary channels all-in-one.
The three-in-one screen of present embodiment microcomputer binary channels all-in-one is made up of control flow, control system, excitation system.Wherein control system comprises microcomputer excitation ICU, electrically operated valve control circuit, signals collecting input circuit and RS485 communication interface circuit; Excitation system comprises automatic excitation circuit, multifunctional electric current protecting circuit, microcomputer degeneracy net circuit, combined floodgate circuit, separating brake circuit and subsequent use automatic simulation thyristor excitation adjuster;
The generator excitation major loop links to each other with microcomputer excitation ICU; Obtain start pulse signal and other input signals from the generator excitation major loop; Microcomputer excitation ICU links to each other with RS485 communication interface circuit with automatic excitation circuit, multifunctional electric current protecting circuit, microcomputer degeneracy net circuit, combined floodgate circuit, separating brake circuit, signals collecting input circuit respectively, respectively these circuit is controlled after treatment with other input signals according to the start pulse signal that generator excitation sends.Other input signals comprise, generator voltage, electric current, frequency, exciting voltage, exciting current, line voltage, mains frequency, generator speed.
Present embodiment is when the microcomputer excitation, and keeping set end voltage before realizing being incorporated into the power networks is rated value; After being incorporated into the power networks, can select constant voltage that difference operation, the operation of permanent exciting current, constant power factor operation or four kinds of modes of permanent reactive power operation are arranged, switching in service does not have impact.Present embodiment is at the generator unit operation, and it is constant to keep set end voltage, is incorporated into the power networks to distribute each unit reactive power by difference coefficient.Present embodiment also adopts the online adjusting rule of variable-gain PID, improves regulation quality.Can realize that soft opening encourage non-overshoot.Present embodiment adopts unique synchronizing signal system of selection, and during the phase three-wire three input, arbitrary phase PT broken string can not lose synchronizing signal, and this moment, generator transferred permanent exciting current operational mode automatically to, as usual generating.
Microcomputer degeneracy net circuit and device that present embodiment adopts are a kind of multi-functional full-automatic accurate simultaneous interconnecting devices; It is except that the accuracy that computer control is arranged; Also increased by one and applied mechanically the circuit of checking on of the angle control of being incorporated into the power networks of analog circuit formation, almost completely avoided the possibility of false switching.It has automatic Regulation and speed governing relay output interface, makes it from motion tracking line voltage and frequency, does not have angular difference in theory and is incorporated into the power networks.It measures the switch motion time automatically, as leading time.It has the function of tach signal appearance, and driving operating frequency and braking frequency can be set, and the corresponding relays outlet is arranged.It can be provided with multinomial and network parameters, be incorporated into the power networks before it send pressure regulation and speed-regulating pulse, guarantee the very first time be incorporated into the power networks and impulse current minimum.Under the microcomputer failure condition, when being badly in need of generating again, can adopting the last three-phase indicator light of screen to carry out the concealed light method and be incorporated into the power networks.
Present embodiment has the microcomputer governing function owing to adopt microcomputer excitation ICU, when control flow " start " button by after assigning 1 second, contact connection that this device " adds power ", drive motors is opened stator near frequency reaches 50Hz; After being incorporated into the power networks, plus-minus load is by by " adding meritorious " on the control flow, and " subtracting meritorious " knob is regulated.Distant place control leans on this device " to add meritorious ", and " subtracting meritorious " output relay is regulated; During load rejection, frequency raises gradually, when surpassing 53HZ, " subtracting meritorious " closing of contact, until frequency retrieval to the 53Hz, when frequency surpasses the actuating of relay of 70Hz quick closing valve water valve; When pressing " shutdown " button after 2 seconds, automatically active power and reactive power are reduced to 0 load, manually behind the tripping main switch; When generator frequency was lower than 45Hz, device cancellation trigger impulse was got back to the preceding state of start; The locking output contact leans on artificial button that stator is closed this moment; The small hydro turbine group scarcely adopts machinery or hydrodynamic governor; And coming regulating frequency and power with the method for hand-motor adjusting guide vane opening, this device microcomputer frequency measurement measurement of power uses with this matched with devices; Can reach the similar function of speed regulator, investment can be saved.
Present embodiment also has by the automatic electricity generate function of water level.Multiple electricity avoids abandoning water when water level is high.When water level is low, generate electricity less, improve head height with retaining.Make it economical operation, multiple.
Present embodiment has microcomputer excitation and simulation excitation binary channels function, and promptly this screen has one in automatic simulation thyristor excitation adjuster, and as subsequent use, its wiring is very simple with operation when computer system failure.
The dual-channel microcomputer embodiment machine triple screen panel layout shown in Figure 3, the screen is equipped with 12 four LED digital meter, respectively, show the three-phase voltage, phase current, three-phase active power, three-phase reactive power, power factor, frequency, excitation voltage, excitation current; This screen is also equipped with six analog panel meters, respectively, show the voltage, current, three-phase active power, power factor, frequency, excitation current; also equipped with two Analog Panel Meters display network voltage, network frequency, as well as all kinds of alarm indicators.
Present embodiment also is provided with the RS485 communication interface, by the communications protocol and the upper machine communication of regulation.All parameters all can show at host computer, the operations staff can be on the backstage supervisory work generator, realize unmanned or few man on duty.
The voltage-regulation scope of present embodiment: 30%--130%, precision 0.5%; Stepless accent difference scope :-20.0%--20.0%; Governing speed is 1 cycle; Pilot angle resolution: 0.005 degree.
Claims (1)
1. three-in-one control flow of microcomputer binary channels; Form by control flow, control system, excitation system; It is characterized in that said control system comprises microcomputer excitation ICU, electrically operated valve control circuit, signals collecting input circuit and RS485 communication interface circuit; Said excitation system comprises automatic excitation circuit, multifunctional electric current protecting circuit, microcomputer degeneracy net circuit, combined floodgate circuit, separating brake circuit; The generator excitation major loop links to each other with microcomputer excitation ICU; Obtain start pulse signal and other input signals from the generator excitation major loop; Said microcomputer excitation ICU links to each other with RS485 communication interface circuit with automatic excitation circuit, multifunctional electric current protecting circuit, microcomputer degeneracy net circuit, combined floodgate circuit, separating brake circuit, signals collecting input circuit respectively, respectively these circuit is controlled after treatment with other input signals according to the start pulse signal that generator excitation sends;
Said control flow is equipped with 12 4 LED digital instruments, shows three-phase voltage, three-phase current, three phases active power, three phase reactive power, power factor, frequency, exciting voltage, exciting current respectively; Control flow also is equipped with 8 analog board face tables, respectively display voltage, electric current, three phases active power, power factor, frequency, exciting current, line voltage, mains frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202960727U CN202183751U (en) | 2011-08-16 | 2011-08-16 | Microcomputer double-channel three-in-one control panel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202960727U CN202183751U (en) | 2011-08-16 | 2011-08-16 | Microcomputer double-channel three-in-one control panel |
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| CN202183751U true CN202183751U (en) | 2012-04-04 |
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| CN2011202960727U Expired - Fee Related CN202183751U (en) | 2011-08-16 | 2011-08-16 | Microcomputer double-channel three-in-one control panel |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103607043A (en) * | 2013-10-11 | 2014-02-26 | 广东鸿源能源技术有限公司 | Hydropower station intelligent monitoring system |
| CN104133494A (en) * | 2014-07-03 | 2014-11-05 | 广西桂林林松电力科技开发有限公司 | Controller for automatic load increase and decrease and operation method |
| CN104935228A (en) * | 2015-07-17 | 2015-09-23 | 李红 | Hydropower intelligent control system and control method |
| CN106406183A (en) * | 2016-11-11 | 2017-02-15 | 广州擎天实业有限公司 | Redundancy technology switching method for excitation regulator of synchronous generator |
| CN107064596A (en) * | 2016-10-09 | 2017-08-18 | 哈尔滨电机厂有限责任公司 | The binary channels reforming technology method of excitation system AC exciting current sampling circuit |
| CN111969909A (en) * | 2020-08-21 | 2020-11-20 | 怀化市水利电力勘测设计研究院 | Exciting current frequency control method for variable-speed hydroelectric generating set |
| CN116721509A (en) * | 2023-06-14 | 2023-09-08 | 宁波市轨道交通集团有限公司智慧运营分公司 | Electrical fire monitoring and fire control non-cutting control system based on microcomputer protection monitoring |
-
2011
- 2011-08-16 CN CN2011202960727U patent/CN202183751U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103607043A (en) * | 2013-10-11 | 2014-02-26 | 广东鸿源能源技术有限公司 | Hydropower station intelligent monitoring system |
| CN104133494A (en) * | 2014-07-03 | 2014-11-05 | 广西桂林林松电力科技开发有限公司 | Controller for automatic load increase and decrease and operation method |
| CN104935228A (en) * | 2015-07-17 | 2015-09-23 | 李红 | Hydropower intelligent control system and control method |
| CN104935228B (en) * | 2015-07-17 | 2018-07-03 | 金华乾缘智能科技有限公司 | Intelligent control method based on water power intelligence control system |
| CN107064596A (en) * | 2016-10-09 | 2017-08-18 | 哈尔滨电机厂有限责任公司 | The binary channels reforming technology method of excitation system AC exciting current sampling circuit |
| CN106406183A (en) * | 2016-11-11 | 2017-02-15 | 广州擎天实业有限公司 | Redundancy technology switching method for excitation regulator of synchronous generator |
| CN106406183B (en) * | 2016-11-11 | 2019-09-06 | 广州擎天实业有限公司 | Excitation Controller for Synchronous Generator redundancy technology switching method |
| CN111969909A (en) * | 2020-08-21 | 2020-11-20 | 怀化市水利电力勘测设计研究院 | Exciting current frequency control method for variable-speed hydroelectric generating set |
| CN111969909B (en) * | 2020-08-21 | 2023-05-26 | 怀化市水利电力勘测设计研究院 | Excitation current frequency control method for variable-speed hydroelectric generating set |
| CN116721509A (en) * | 2023-06-14 | 2023-09-08 | 宁波市轨道交通集团有限公司智慧运营分公司 | Electrical fire monitoring and fire control non-cutting control system based on microcomputer protection monitoring |
| CN116721509B (en) * | 2023-06-14 | 2024-02-09 | 宁波市轨道交通集团有限公司智慧运营分公司 | Electrical fire monitoring and fire control non-cutting control system based on microcomputer protection monitoring |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120404 Termination date: 20180816 |
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| CF01 | Termination of patent right due to non-payment of annual fee |