CN203850993U - Synchronous generator apparatus and excitation device thereof - Google Patents
Synchronous generator apparatus and excitation device thereof Download PDFInfo
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- CN203850993U CN203850993U CN201420255858.8U CN201420255858U CN203850993U CN 203850993 U CN203850993 U CN 203850993U CN 201420255858 U CN201420255858 U CN 201420255858U CN 203850993 U CN203850993 U CN 203850993U
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Abstract
The utility model relates to a synchronous generator excitation device comprising a power transformer, a rectification bridge, a synchronous transformer, an excitation transformer, an excitation unit, a deexcitation and overvoltage protection unit, a main microcomputer excitation controller, a first power rectification unit and a cabinet. The main microcomputer excitation controller comprises a CPU master control unit, a switch power unit, a switching value input/output unit, a relay output unit, a signal isolation sampling unit, a pulse amplification unit and a human-computer interface display unit. The utility model further provides a synchronous generator apparatus. According to the utility model, the circuit structure can be greatly simplified so as to improve the circuit stability and simplify the maintenance method.
Description
Technical field
The utility model relates to Electromechanical Control technical field, particularly a kind of excitation unit of synchronous generator and synchronous generator machine equipment.
Background technology
Excitation unit is the important part of synchronous generator, and its effect is the automatics that DC excitation electric current is provided to the rotor of generator.The rotor of synchronous generator drags rotation by steam turbine or hydraulic turbine prime movers.When reaching after rated speed, generator amature passes into exciting current, and rotating magnetic field cutting stator coil produces three-phase induction electromotive force at stator coil.
The governor circuit of existing synchronous generator excitation equipment adopts analog circuit to realize, therefore not only self there is the problem of circuit structure complexity, poor anti jamming capability, poor stability in governor circuit, and in the running of synchronous generator excitation equipment, bring response speed excessively slow, inconvenient operation, keep in repair the problems such as loaded down with trivial details, cannot reach more superior control effect.
Utility model content
The purpose of this utility model is intended at least solve one of described technological deficiency.
For this reason, an object of the present utility model is to propose a kind of excitation unit of synchronous generator, and this device has advantages of that circuit structure is simple, stability is high, antijamming capability is strong.
To achieve these goals, the utility model embodiment on the one hand provides a kind of excitation unit of synchronous generator, comprise: power transformer, rectifier bridge, synchrotrans, excitation transformer, excitation unit, demagnetization and overvoltage protective unit, host microcomputer excitation controller, the first power rectification unit and cabinet, wherein, one end of described power transformer is connected with described power rectification unit, the other end of described power transformer is connected with one end of described rectifier bridge, the other end of described rectifier bridge is connected with described host microcomputer excitation controller, one end of described synchrotrans is connected with described the first power rectification unit, the other end of described synchrotrans is connected with described host microcomputer excitation controller, the elementary jointing temp protective circuit of described excitation transformer, secondary output power supply, described excitation unit access station-service direct current, described demagnetization and overvoltage protective unit connect described excitation unit, described host microcomputer excitation controller comprises: CPU main control unit, switching power supply, switching value input-output unit, relay output unit, signal isolation sampling unit, Pulse Amplifier Unit and man-machine interface display unit, wherein, described CPU main control unit adopts Digital Signal Processing dsp chip, the input of described switching power supply is connected with described rectifier bridge, the output of described switching power supply and described CPU main control unit, described switching value input-output unit, described relay output unit is connected with described Pulse Amplifier Unit, wherein, described switching power supply comprises: the first Switching Power Supply subelement and the second switch power supply subelement that operating voltage is provided that operating voltage is provided, described signal isolation sampling unit is connected that with dynamo current measurement mechanism, generator voltage measurement mechanism, described synchrotrans and described CPU main control unit generator voltage signal, dynamo current signal, exciting current signal and synchronous voltage signal are isolated, dynamo current measurement mechanism and described generator voltage measurement mechanism are connected to described synchronous generator, and wherein said relay output unit includes signal lamp, switching value input-output unit, described switching value input-output unit is connected with described CPU main control unit with described the first Switching Power Supply subelement, relay output unit, described relay output unit is connected with described the first Switching Power Supply subelement, Pulse Amplifier Unit, described Pulse Amplifier Unit is connected with described CPU main control unit with described the first Switching Power Supply subelement, man-machine interface display unit, described man-machine interface display unit is connected with described CPU main control unit, the first power rectification unit, described power rectification unit is connected with described excitation unit with described Pulse Amplifier Unit respectively, cabinet, described power transformer, rectifier bridge, synchrotrans, excitation transformer, excitation unit, demagnetization and overvoltage protective unit, host microcomputer excitation controller, the first power rectification unit are positioned at described cabinet, and wherein said man-machine interface display unit is installed on the surface of described cabinet.
In another embodiment of the present utility model, described switching value input-output unit adopts optical coupler isolating type.
In another embodiment of the present utility model, described switching value input-output unit comprises power sense circuit, and described power sense circuit is connected with described the first Switching Power Supply subelement.
In an embodiment of the present utility model, described man-machine interface display unit comprises touch-screen.
In another embodiment of the present utility model, also comprise: communication interface and network interface, wherein, the type of described communication interface and network interface is at least following one: USB interface, Ethernet interface, RS232 interface, RS485 interface/RS422 interface, high-speed field bus CANBUS, TCP/IP interface, MODEM interface.
In an embodiment of the present utility model, described the first power rectification unit comprises heat abstractor, and described heat abstractor comprises radiator and blower fan.
In another embodiment of the present utility model, also comprise: microcomputer excitation controller for subsequent use, described microcomputer excitation controller for subsequent use is connected with described rectifier bridge, described synchrotrans and described the first power rectification unit.
In an embodiment of the present utility model, also comprise: microcomputer excitation controller for subsequent use, described microcomputer excitation controller for subsequent use and described rectifier bridge and described synchrotrans; The second power rectification unit, described the second power rectification unit is connected with described microcomputer excitation controller for subsequent use.
According to the excitation unit of the synchronous generator of the utility model embodiment, adopt Digital Signal Processing dsp chip to realize relevant master control function as the main control unit of excitation unit, utilize the feature such as the processing speed that dsp chip has and response is fast, centralization control, can improve response speed, computational speed, anti-electromagnetic interference and the reliability of excitation unit.Wherein, the utility model, by meticulous design, is reasonably processed the details of the aspects such as ground connection, filtering, shielding, makes the antijamming capability of excitation unit reach three grades of above standards of harsh grade.
And, adopt independent dsp chip as main control unit, greatly simplify circuit structure, and then improved the stability of circuit, simplify method for maintaining.And the excitation unit of synchronous generator of the present utility model, by man-machine interface display unit is set, provides superior man machine operation interface, improve the convenience of user's operation.
Another object of the present utility model is to propose a kind of synchronous generator machine equipment, and this synchronous generator machine equipment has advantages of that circuit structure is simple, stability is high, antijamming capability is strong.
To achieve these goals, the utility model embodiment on the other hand provides a kind of synchronous generator machine equipment, comprises synchronous generator; The excitation unit of the synchronous generator of the utility model above-described embodiment, signal isolation sampling unit and dynamo current measurement mechanism and the generator voltage measurement mechanism of the excitation unit of described synchronous generator, described dynamo current measurement mechanism and described generator voltage measurement mechanism are connected to described synchronous generator.
According to the synchronous generator machine equipment of the utility model embodiment, adopt Digital Signal Processing dsp chip to realize relevant master control function as the main control unit of excitation unit, utilize the feature such as the processing speed that dsp chip has and response is fast, centralization control, can improve response speed, computational speed, anti-electromagnetic interference and the reliability of excitation unit.Wherein, the utility model, by meticulous design, is reasonably processed the details of the aspects such as ground connection, filtering, shielding, makes the antijamming capability of excitation unit reach three grades of above standards of harsh grade.
And, adopt independent dsp chip as main control unit, greatly simplify circuit structure, and then improved the stability of circuit, simplify method for maintaining.And the excitation unit of synchronous generator of the present utility model, by man-machine interface display unit is set, provides superior man machine operation interface, improve the convenience of user's operation.
The aspect that the utility model is additional and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present utility model.
Brief description of the drawings
Above-mentioned and/or additional aspect of the present utility model and advantage accompanying drawing below combination is understood becoming the description of embodiment obviously and easily, wherein:
Fig. 1 is according to the schematic diagram of the excitation unit of the synchronous generator of the utility model embodiment;
Fig. 2 is according to the structure chart of the host microcomputer excitation controller of the utility model embodiment;
Fig. 3 is according to the schematic appearance of the excitation unit of the synchronous generator of the utility model embodiment.
Embodiment
Describe embodiment of the present utility model below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Be exemplary below by the embodiment being described with reference to the drawings, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.
In the utility model, unless otherwise clearly defined and limited, the terms such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be also electrical connection; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can understand as the case may be the concrete meaning of above-mentioned term in the utility model.
The excitation unit of the synchronous generator that the utility model provides is a kind of electric regulation device that exciting current is played to control and regulating action, this excitation unit has high response, superior man machine operation interface, higher processing speed, the advantage that centralization control is higher.
As shown in Figure 1; the excitation unit of the synchronous generator of the utility model embodiment, comprising: power transformer TC1, rectifier bridge, synchrotrans TI1, excitation transformer TR1, excitation unit QC, demagnetization and overvoltage protective unit, host microcomputer excitation controller AEC, the first power rectification unit B 8 and cabinet.Wherein, one end of power transformer TC1 is connected with the first power rectification unit, and the other end of power transformer TC1 is connected with one end of rectifier bridge, and the other end of rectifier bridge is connected with host microcomputer excitation controller AEC.One end of synchrotrans TI1 is connected with the first power rectification unit B 8, and the other end of synchrotrans TI1 is connected with host microcomputer excitation controller AEC.The elementary jointing temp protective circuit of excitation transformer TR1, secondary output services voltage.Excitation unit access station-service direct current, demagnetization and overvoltage protective unit connect excitation unit.Wherein, station-service direct current is 220V direct current.
As shown in Figure 2, host microcomputer excitation controller AEC comprises: CPU main control unit B1, switching power supply B2, switching value input-output unit B3, relay output unit B4, signal isolation sampling unit B5, Pulse Amplifier Unit B7 and man-machine interface display unit B6.
CPU main control unit B1 comprises: random access memory ram, read-only memory ROM, Erarable Programmable Read only Memory EPROM, F28335, pulse shaping, detection and switch unit, serial port and CPU board (motherboard).Wherein, CPU main control unit B1 can adopt Digital Signal Processing dsp chip.Wherein, CPU main control unit B1 adopts up-to-date high speed 32 bit DSPs 28335 as core, maximum speed can reach 150MHz, the accurate numberization that powerful data-handling capacity and fast Floating-point Computation are field regulator model and the realization of other miscellaneous function of excitation unit provide guarantee, it is the kernel control chip of whole excitation unit, and data processing speed and precision improve greatly.
Master control borad of the present utility model (CPU board) adopts surface label technique, multilayer board, and army's grade chip, important chip all adopts the matured product of domestic and international esbablished corporation.
And, CPU main control unit B1 adopts real-time multi-task operating system RTOS and powerful experts database function thereof, the programming style of oriented mission, carry out the work such as resource management, task scheduling, abnormality processing by all-round excellent first method of service, work very reliable, also make the performance of excitation unit be able to maximum performance.CPU main control unit B1 adopts the programmings such as C language, command list (IL), Basic, structure text (ST), SFC (SFC), data module editing machine, data type editing machine, execution speed is fast, readable good, be easy to expansion and transplant.
Specifically, the input of switching power supply B2 is connected with rectifier bridge, the output of switching power supply B2 is connected with CPU main control unit B1, switching value input-output unit B3, relay output unit B4, signal isolation sampling unit B5, Pulse Amplifier Unit B7 unit, wherein, switching power supply B2 comprises: the first Switching Power Supply subelement B21 and the second switch power supply subelement B22 that operating voltage is provided that operating power is provided.In an example of the present utility model, operating power is two-way 24V operating voltage, operating voltage is+5V ,+12V and-operating voltage of 12V.
It should be noted that, the excitation unit power acquisition of synchronous generator of the present utility model, with supplying power with double circuit, is come certainly in direct-flow storage battery power supply, and another road becomes or station-service alternating current step-down rectifier from machine end.The parallel running of two-way power supply, redundancy each other, has improved the reliability of installing.
Signal isolation sampling unit B5 is connected that with dynamo current measurement mechanism CT, generator voltage measurement mechanism PT, synchrotrans and CPU main control unit B1 generator voltage signal, dynamo current signal, exciting current signal and synchronous voltage signal are isolated, and dynamo current measurement mechanism and generator voltage measurement mechanism are connected to synchronous generator GS.Specifically, dynamo current measurement mechanism CT, generator voltage measurement mechanism PT are adapted for the weak electric signal in A/D range after the voltage transformer of the employing miniaturizations such as the generator measurement voltage signal measuring, instrument voltage signal, system voltage signal, synchronous voltage signal, generator voltage signal, dynamo current signal, exciting current signal can being isolated.Particularly, the signal that stator current instrument transformer is come, after the isolation of internal current instrument transformer, is adapted for the weak electric signal in A/D range.Exciting current is sampled after level conversion after filtering.Synchronizing signal is shaped as to square wave, for CPU main control unit, B1 produces pulse simultaneously.
Switching value input-output unit B3 is connected with CPU main control unit B1 with the first Switching Power Supply subelement B21.In an embodiment of the present utility model, switching value input-output unit B3 adopts optical coupler isolating type.Wherein, switching value input-output unit B3 is made up of relay.Switching value input-output unit B3 after photoelectricity isolation, enters 24 way switch amount input signals observing and controlling CPU main control unit B1 and carries out state judgement.
Further, switching value input-output unit B3 comprises power sense circuit, and wherein, power sense circuit is connected with the first Switching Power Supply subelement B21.24 way switch amount output signals, through photoelectricity isolation rear drive relay output unit B4, are carried out to signal output.
Relay output unit B4 is connected with switching value input-output unit B3 with the first Switching Power Supply subelement B21 respectively, and its repeat circuit output unit B3 includes signal lamp, display output state.
Pulse Amplifier Unit B7 is connected with CPU main control unit B3 with the first Switching Power Supply subelement B21.Man-machine interface display unit B6 is connected with CPU main control unit B3.Wherein, man-machine interface display unit B6 is installed on the surface of cabinet.And man-machine interface display unit B6 includes touch-screen, this touch-screen can provide instrument monitoring and control operation panel for human-computer dialogue.Man-machine interface adopts the full-localized interface of touch-screen, is convenient to operations staff's supervision.The real-time condition display of switching value input, switching value force the function such as switching, the extraction of fault recorder data of output, control and protection setting parameter, operational mode all can on this man-machine dialog box, realize in addition.
In an example of the present utility model, man-machine interface display unit B6 adopts 15 cun high Islamic colour display screens to show device, is using function, the aspects such as the friendly of operation and the advance of technology, for other excitation unit of domestic market, there is better operating effect.
Fig. 3 is the profile schematic diagram of the utility model synchronous generator excitation equipment, and as shown in Figure 3, man-machine interface display unit B6 and CPU main control unit B1 are combined into one, and are embedded on the front panel of excitation unit, are convenient to maintenance and operation.Cabinet Qianmen adopts overall toughened glass, elegant in appearance.
The external logic loop of the excitation unit of synchronous generator of the present utility model is mainly to complete the isolation of external switch amount signal and the expansion of node with several direct currents 220V relay, the field suppression switch, grid-connected switch, increasing, the demagnetize contact that come from scene, all isolate through direct current 220V relay, because the general transmitting range of these signals is far away, and be mixed in forceful electric power cable trough, direct current 220V operation is conducive to improve antijamming capability.Relay node after isolation through light every after read in CPU main control unit B3, switching value is through electromagnetism and photoelectricity dual resisteance, and ensures that cabinet is all forceful electric power interfaces outward, in cabinet, 24V power supply is not drawn cabinet, thereby guarantee reliability.Hence one can see that, and the external logic loop of the excitation unit of synchronous generator of the present utility model simple in structure is convenient to realize.
And; the first power rectification unit B 4 is connected with excitation unit with Pulse Amplifier Unit B7 respectively, and power transformer, rectifier bridge, synchrotrans, excitation transformer, excitation unit, demagnetization and overvoltage protective unit, host microcomputer excitation controller, the first power rectification unit are positioned at cabinet.Wherein, the first power rectification unit B 4 comprises heat abstractor, and wherein heat abstractor comprises radiator and blower fan.Utilize radiator to add fan radiating, operation noise is little, easy to maintenance, can greatly improve the structure of excitation unit and utilize space.
The excitation unit of synchronous generator of the present utility model also comprises: communication interface and network interface, wherein, the type of communication interface and network interface is at least following one: USB interface, Ethernet interface, RS232 interface, RS485 interface/RS422 interface, high-speed field bus CANBUS, TCP/IP interface, MODEM interface.By adopting above-mentioned very open communication interface and network interface, can be easily and miscellaneous equipment or net connection, realize automation, the informationization of equipment control, management.
In an embodiment of the present utility model, the excitation unit of synchronous generator of the present utility model configures powerful oscillograph function.Concrete function is as follows:
(1) can record trouble 80 Miao 16 road analog measurement data and 16 way switch amount states after first 20 seconds and fault.
(2) can arbitrary disposition fault surrounding time in record ripple duration, every cycle sampling resolution can be set and show resolution and time period, every cycle sampling resolution can reach every 20ms 144 points of sampling.
(3) amount of range record comprises: generator voltage UG1, UG2, dynamo current IA, Trigger Angle ARF, active-power P, reactive power Q, rotor voltage Ufd, rotor current Ifd, generator frequency F0, substantially contain all analog quantitys, can upload on notebook computer by serial ports and show, process.
(4) can carry out easily waveform storage, analysis and printing.
(5) Starting mode manually boots, and Sudden Changing Rate starts and three kinds of modes of fault initiating automatically, the variation waveform of the each physical quantity can record electric motor starting and operation time.
In conjunction with the description of the above-mentioned structure to all parts, the operation principle of the excitation unit to synchronous generator of the present utility model describes below.
First, the alternating voltage 220V that system outside is provided and direct voltage 110 or 220V double loop power supply are sent in excitation unit, are transformed into the required operating voltage of CPU main control unit B1 through switching power supply B2.The PT signal of generator (generator voltage signal) and CT signal (dynamo current signal) are sent in excitation unit, through signal isolation sampling unit B5 isolate with shaping after send CPU main control unit B1 to.Signal isolation sampling unit B5 gathers current exciting voltage and exciting current value is sent into CPU main control unit B1 after direct current sampling section is finished dealing with.By control operation panel, input signal is sent into after the light-coupled isolation of switching value input-output unit B3 to CPU main control unit B1, and the control output signal of CPU main control unit B1 generation is delivered to relay output unit B4 after light-coupled isolation, control each by control object with this.Gather synchronizing signal voltage U T and send into signal isolation sampling unit, after shaping filter, send into CPU main control unit B1, CPU main control unit B1 output pulse signal, after Pulse Amplifier Unit B7 amplifies for controlling the first power rectification unit B 8.Man-machine interface display unit B6 can show current all operational factors, and user also can pass through touch-screen online modification control parameter.
In an embodiment of the present utility model, the excitation unit of synchronous generator of the present utility model also comprises: microcomputer excitation controller BEC for subsequent use, wherein microcomputer excitation controller BEC for subsequent use is connected with rectifier bridge, synchrotrans and the first power rectification unit.Wherein, the structure of host microcomputer excitation controller and microcomputer excitation controller for subsequent use is identical with work-based logic principle.
Such active/standby mode is while breaking down for fear of an excitation controller, excitation unit work paralysis.Host microcomputer excitation controller AEC and microcomputer excitation controller BEC for subsequent use devote oneself to work in the time that excitation unit moves.In the time that host microcomputer excitation controller AEC in service has fault, microcomputer excitation controller BEC for subsequent use automatically understands undisturbed and is switched to running status.Then host microcomputer excitation controller AEC report fault.Wherein, host microcomputer excitation controller AEC and microcomputer excitation controller BEC for subsequent use can share a first power rectification unit B 8.
In addition, host microcomputer excitation controller AEC and microcomputer excitation controller BEC for subsequent use also can utilize respectively a power rectification unit, and microcomputer excitation controller and power rectification unit form the mode of operation of 1 pair 1.
In another embodiment of the present utility model, the excitation unit of synchronous generator of the present utility model also comprises: microcomputer excitation controller BEC for subsequent use and the second power rectification unit, wherein, microcomputer excitation controller for subsequent use and rectifier bridge and synchrotrans, the second power rectification unit is connected with microcomputer excitation controller for subsequent use.The pulse signal of host microcomputer excitation controller AEC output, after the Pulse Amplifier Unit of its inside amplifies for controlling the first power rectification unit.The pulse signal of microcomputer excitation controller BEC for subsequent use output, after the Pulse Amplifier Unit of its inside amplifies for controlling the second power rectification unit.
It should be noted that, the first and second power rectification unit all adopt modularized design, utilize radiator and fan radiating, and operation noise is little, easy to maintenance, and the structure that has greatly improved excitation unit is utilized space.
The periphery of the excitation unit of synchronous generator of the present utility model is equipped with large-scale programmable logic device on-site programmable gate array FPGA, complex programmable logic device (CPLD) as auxiliary element, control system is reduced into a SOC (system on a chip) substantially, thereby greatly improve the reliability of system, realize full AC Data, the operation logic circuit of excitation unit, the voltage setting mechanism of machinery or electronics can be simplified or cancel.
According to the excitation unit of the synchronous generator of the utility model embodiment, adopt Digital Signal Processing dsp chip to realize relevant master control function as the main control unit of excitation unit, utilize the feature such as the processing speed that dsp chip has and response is fast, centralization control, can improve response speed, computational speed, anti-electromagnetic interference and the reliability of excitation unit.Wherein, the utility model, by meticulous design, is reasonably processed the details of the aspects such as ground connection, filtering, shielding, makes the antijamming capability of excitation unit reach three grades of above standards of harsh grade.
And, adopt independent dsp chip as main control unit, greatly simplify circuit structure, and then improved the stability of circuit, simplify method for maintaining.And the excitation unit of synchronous generator of the present utility model, by man-machine interface display unit is set, provides superior man machine operation interface, improve the convenience of user's operation.
The utility model also proposes a kind of synchronous generator machine equipment, this synchronous generator machine equipment comprises the excitation unit of the synchronous generator that synchronous generator and the utility model above-described embodiment provide, wherein, the signal isolation sampling unit of the excitation unit of synchronous generator is connected with generator voltage measurement mechanism with dynamo current measurement mechanism, and dynamo current measurement mechanism and generator voltage measurement mechanism are connected to synchronous generator.
According to the synchronous generator machine equipment of the utility model embodiment, adopt Digital Signal Processing dsp chip to realize relevant master control function as the main control unit of excitation unit, utilize the feature such as the processing speed that dsp chip has and response is fast, centralization control, can improve response speed, computational speed, anti-electromagnetic interference and the reliability of excitation unit.Wherein, the utility model, by meticulous design, is reasonably processed the details of the aspects such as ground connection, filtering, shielding, makes the antijamming capability of excitation unit reach three grades of above standards of harsh grade.
And, adopt independent dsp chip as main control unit, greatly simplify circuit structure, and then improved the stability of circuit, simplify method for maintaining.And the excitation unit of synchronous generator of the present utility model, by man-machine interface display unit is set, provides superior man machine operation interface, improve the convenience of user's operation.
In the description of this specification, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present utility model or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And specific features, structure, material or the feature of description can be with suitable mode combination in any one or more embodiment or example.
Although illustrated and described embodiment of the present utility model above, be understandable that, above-described embodiment is exemplary, can not be interpreted as restriction of the present utility model, those of ordinary skill in the art can change above-described embodiment in the situation that not departing from principle of the present utility model and aim in scope of the present utility model, amendment, replacement and modification.Scope of the present utility model is extremely equal to and limits by claims.
Claims (9)
1. the excitation unit of a synchronous generator, it is characterized in that, comprise: power transformer, rectifier bridge, synchrotrans, excitation transformer, excitation unit, demagnetization and overvoltage protective unit, host microcomputer excitation controller, the first power rectification unit and cabinet, wherein, one end of described power transformer is connected with described the first power rectification unit, the other end of described power transformer is connected with one end of described rectifier bridge, the other end of described rectifier bridge is connected with described host microcomputer excitation controller, one end of described synchrotrans is connected with described the first power rectification unit, the other end of described synchrotrans is connected with described host microcomputer excitation controller, the elementary jointing temp protective circuit of described excitation transformer, secondary output power supply, described excitation unit access station-service direct current, described demagnetization and overvoltage protective unit connect described excitation unit,
Described host microcomputer excitation controller comprises: CPU main control unit, switching power supply, switching value input-output unit, relay output unit, signal isolation sampling unit, Pulse Amplifier Unit and man-machine interface display unit, wherein, described CPU main control unit adopts Digital Signal Processing dsp chip
The input of described switching power supply is connected with described rectifier bridge, the output of described switching power supply is connected with described Pulse Amplifier Unit with described CPU main control unit, described switching value input-output unit, described relay output unit, wherein, described switching power supply comprises: the first Switching Power Supply subelement and the second switch power supply subelement that operating voltage is provided that operating voltage is provided;
Described signal isolation sampling unit is connected that with dynamo current measurement mechanism, generator voltage measurement mechanism, described synchrotrans and described CPU main control unit generator voltage signal, dynamo current signal, exciting current signal and synchronous voltage signal are isolated, and described dynamo current measurement mechanism and described generator voltage measurement mechanism are connected to described synchronous generator;
Described switching value input-output unit is connected with described CPU main control unit with described the first Switching Power Supply subelement;
Described relay output unit is connected with described the first Switching Power Supply subelement, and wherein said relay output unit includes signal lamp;
Described Pulse Amplifier Unit is connected with described CPU main control unit with described the first Switching Power Supply subelement;
Described man-machine interface display unit is connected with described CPU main control unit;
Wherein, described the first power rectification unit is connected with described excitation unit with described Pulse Amplifier Unit respectively; and described power transformer, rectifier bridge, synchrotrans, excitation transformer, excitation unit, demagnetization and overvoltage protective unit, host microcomputer excitation controller, the first power rectification unit are positioned at described cabinet, and wherein said man-machine interface display unit is installed on the surface of described cabinet.
2. the excitation unit of synchronous generator as claimed in claim 1, is characterized in that, described switching value input-output unit adopts optical coupler isolating type.
3. the excitation unit of synchronous generator as claimed in claim 1 or 2, is characterized in that, described switching value input-output unit comprises power sense circuit, and described power sense circuit is connected with described the first Switching Power Supply subelement.
4. the excitation unit of synchronous generator as claimed in claim 1, is characterized in that, described man-machine interface display unit comprises touch-screen.
5. the excitation unit of synchronous generator as claimed in claim 1, it is characterized in that, also comprise: communication interface and network interface, wherein, the type of described communication interface and network interface is at least following one: USB interface, Ethernet interface, RS232 interface, RS485 interface/RS422 interface, high-speed field bus CANBUS, TCP/IP interface, MODEM interface.
6. the excitation unit of synchronous generator as claimed in claim 1, is characterized in that, described the first power rectification unit comprises heat abstractor, and described heat abstractor comprises radiator and blower fan.
7. the excitation unit of synchronous generator as claimed in claim 1, is characterized in that, also comprises: microcomputer excitation controller for subsequent use, described microcomputer excitation controller for subsequent use is connected with described rectifier bridge, described synchrotrans and described the first power rectification unit.
8. the excitation unit of synchronous generator as claimed in claim 1, is characterized in that, also comprises:
Microcomputer excitation controller for subsequent use, described microcomputer excitation controller for subsequent use and described rectifier bridge and described synchrotrans;
The second power rectification unit, described the second power rectification unit is connected with described microcomputer excitation controller for subsequent use.
9. a synchronous generator machine equipment, is characterized in that, comprising:
Synchronous generator;
The excitation unit of the synchronous generator described in claim 1-8 any one, the signal isolation sampling unit of the excitation unit of described synchronous generator is connected with generator voltage measurement mechanism with dynamo current measurement mechanism, and described dynamo current measurement mechanism and described generator voltage measurement mechanism are connected to described synchronous generator.
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| CN201420255858.8U CN203850993U (en) | 2014-05-19 | 2014-05-19 | Synchronous generator apparatus and excitation device thereof |
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| CN201420255858.8U CN203850993U (en) | 2014-05-19 | 2014-05-19 | Synchronous generator apparatus and excitation device thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104393806A (en) * | 2014-12-22 | 2015-03-04 | 株洲南车时代电气股份有限公司 | Excitation module and excitation system |
| CN105720873A (en) * | 2016-03-21 | 2016-06-29 | 戴树梅 | PIC single chip microcomputer-based small synchronous generator excitation controller |
-
2014
- 2014-05-19 CN CN201420255858.8U patent/CN203850993U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104393806A (en) * | 2014-12-22 | 2015-03-04 | 株洲南车时代电气股份有限公司 | Excitation module and excitation system |
| CN105720873A (en) * | 2016-03-21 | 2016-06-29 | 戴树梅 | PIC single chip microcomputer-based small synchronous generator excitation controller |
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