CN208908427U - A kind of synchronous generator brushless excitation regulating system - Google Patents
A kind of synchronous generator brushless excitation regulating system Download PDFInfo
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- CN208908427U CN208908427U CN201821366197.0U CN201821366197U CN208908427U CN 208908427 U CN208908427 U CN 208908427U CN 201821366197 U CN201821366197 U CN 201821366197U CN 208908427 U CN208908427 U CN 208908427U
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- 230000005284 excitation Effects 0.000 title claims abstract description 47
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- 238000004891 communication Methods 0.000 claims abstract description 15
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- 238000005516 engineering process Methods 0.000 claims description 3
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Abstract
The utility model provides a kind of synchronous generator brushless excitation regulating system, and the excitation control system includes generator, exciting transformer, excitation winding intelligence rectification module, voltage/current mutual inductor, field regulator and terminal；The field regulator includes signal acquisition unit, PLC adjusting controller, synchronized-pulse control unit, D/A module, keyboard input module, display module, alarm module and communication unit, the PLC adjusting controller is according to the collected relevant information of the signal acquisition unit, judge working condition locating for the generator, and then select method for optimally controlling, corresponding phase-shifted control signal is obtained through operation, analog control voltage is converted by the D/A module again, is sent to the excitation winding intelligence rectification module.The utility model provides a kind of synchronous generator brushless excitation regulating system, and optimal exciting control method, the very high reliability of excitation system can be selected according to operating states of the units.
Description
Technical field
The utility model belongs to electric control system technical field, in particular to a kind of synchronous generator brushless excitation is adjusted
System.
Background technique
In the power system, exciter control system is particularly important equipment, either in steady-state operation still in transient state
In operational process, the excitation system of generator will directly affect reliability, the peace of the even entire operation of power networks in generator, power plant
Full property and stability.The excitation system of synchronous generator is generally made of two parts.A part is used for the magnetic field of generator
Winding provides DC current, to establish D.C. magnetic field, normally referred to as exciting power output par, c (or being power cell).Separately
A part is for adjusting exciting current when operating normally or accident occurring, and to meet the needs of operation, it includes adjustment of field excitation
Device, automatic field forcing subtract magnetic or automatic field suppressing etc. by force, commonly referred to as excitation con-trol unit.
Traditional field regulator is using single-chip microcontroller as core, using the pid control algorithm of voltage deviation mostly.With hair
The increase of capacity motor and long-distance transmission line are increasing, and this kind of adjuster has been difficult to adapt to Operation of Electric Systems
Stability and reliability requirement.Excitation system failure accounts for more than half of generator failure at this stage, and excitation system failure is still
The main reason for generator failure shutdown and unplanned outage.It is still in the urgent need to address for how improving excitation system reliability
Major issue, and field regulator is most important part in excitation system, its reliability is directly related to excitation con-trol
The reliability of system.
Utility model content
The utility model provides a kind of synchronous generator brushless excitation regulating system, can be selected according to operating states of the units
Optimal exciting control method, the very high reliability of excitation system, and then promote the stability and reliability of electric system.
The utility model is specially a kind of synchronous generator brushless excitation regulating system, and the excitation control system includes hair
Motor, exciting transformer, excitation winding intelligence rectification module, voltage/current mutual inductor, field regulator and terminal, the electricity
Pressure/current transformer is connect with the input terminal of the field regulator, the field regulator respectively with the excitation winding intelligence
It can rectification module, terminal connection；The field regulator includes signal acquisition unit, PLC adjusting controller, lock-out pulse
Control unit, D/A module, keyboard input module, display module, alarm module and communication unit, the PLC adjusting controller point
Not with the signal acquisition unit, the synchronized-pulse control unit, the keyboard input module, the display module, described
Alarm module is connected with the communication unit, and the D/A module is connected with the synchronized-pulse control unit；The PLC
Adjusting controller is opened according to the collected generator operating parameter of the signal acquisition unit, degaussing switch, breaker etc.
The control signal of signal and keyboard input module input is measured in pass, judges working condition locating for the generator, in turn
Corresponding optimized control method is selected, obtains corresponding phase-shifted control signal through operation, then mould is converted by the D/A module
Quasi- control voltage, is finally sent to the excitation winding intelligence rectification module.
The signal acquisition unit can accurately measure network voltage, set end voltage, excitation voltage, stator current, rotor electricity
The on-off models such as real time electrical quantities signal and degaussing switch, breaker such as stream, and signal will be measured and be converted into digital signal, lead to
It crosses RS-485 bus and is sent to the PLC adjusting controller；The signal acquisition unit uses electromagnetic isolation and Phototube Coupling
Technology can guarantee that voltage input, electric current input and output tripartite are completely isolated.
The PLC adjusting controller, operating parameter judges whether the generator works normally based on the received, if occurring
Abnormal, the field regulator selects corresponding control method, and then controls the work of the excitation winding intelligence rectification module
Corresponding exception or failure and equipment operating parameter generation warning message are shown by the display module, are passed through by state
The alarm module issues alarm signal, and is sent to the terminal by the communication unit.
The PLC adjusting controller uses Siemens S7-300 PLC, and operational capability is strong, and has store function, Neng Goutong
Cross the keyboard input module, the terminal realizes parameter setting, parameter query, historical query function.
There are two service aisles for the PLC adjusting controller tool, are run when normal using automatic channel, are cut when breaking down
Alternate channel operation is changed to, the alternate channel is analog channel.
There are two types of the methods of operation for the PLC adjusting controller: constant voltage and the constant excitation megnet current regulation method of operation, and two
The kind method of operation can switch without fluctuation online, and permanent exciting current method of operation operation is automatically switched to when PT broken string.
The synchronized-pulse control unit integrates the phase shift that phased chip realizes the PLC adjusting controller using TC787
Function.
The relevant information of the acquisition of the field regulator, working condition can be transferred to described by the communication unit
Terminal；The communication unit, which can also receive the query information that the terminal is sent and forward it to the PLC, adjusts control
Device, the PLC adjusting controller judges whether it is that preset terminal is sent out according to the query information received, if so, generating phase
The information answered simultaneously is sent to the terminal by the communication unit.
The terminal is computer or mobile phone.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of synchronous generator brushless excitation regulating system of the utility model.
Specific embodiment
With reference to the accompanying drawing to a kind of specific embodiment of synchronous generator brushless excitation regulating system of the utility model
It elaborates.
As shown in Figure 1, the excitation control system of the utility model includes generator, exciting transformer, excitation winding intelligence
Rectification module, voltage/current mutual inductor, field regulator and terminal, the voltage/current mutual inductor and the field regulator
Input terminal connection, the field regulator connect with the excitation winding intelligence rectification module, the terminal respectively；It is described to encourage
Magnestat include signal acquisition unit, PLC adjusting controller, synchronized-pulse control unit, D/A module, keyboard input module,
Display module, alarm module and communication unit, the PLC adjusting controller respectively with the signal acquisition unit, described synchronous
Pulse control unit, the keyboard input module, the display module, the alarm module are connected with the communication unit,
The D/A module is connected with the synchronized-pulse control unit；The PLC adjusting controller is according to the signal acquisition unit
The on-off models such as the collected generator operating parameter, degaussing switch, breaker and the keyboard input module are defeated
The control signal entered judges working condition locating for the generator, and then selects corresponding optimized control method, through operation
Corresponding phase-shifted control signal is obtained, then analog control voltage is converted by the D/A module, is finally sent to the excitation winding
Intelligent rectification module.
The signal acquisition unit can accurately measure network voltage, set end voltage, excitation voltage, stator current, rotor electricity
The on-off models such as real time electrical quantities signal and degaussing switch, breaker such as stream, and signal will be measured and be converted into digital signal, lead to
It crosses RS-485 bus and is sent to the PLC adjusting controller；The signal acquisition unit uses electromagnetic isolation and Phototube Coupling
Technology can guarantee that voltage input, electric current input and output tripartite are completely isolated.
The PLC adjusting controller, operating parameter judges whether the generator works normally based on the received, if occurring
Abnormal, the field regulator selects corresponding control method, and then controls the work of the excitation winding intelligence rectification module
Corresponding exception or failure and equipment operating parameter generation warning message are shown by the display module, are passed through by state
The alarm module issues alarm signal, and is sent to the terminal by the communication unit.
The PLC adjusting controller uses Siemens S7-300 PLC, has stronger operational capability, and have centainly
Store function can realize parameter setting, parameter query, historical query function by the keyboard input module, the terminal.
There are two service aisles for the PLC adjusting controller tool, are run when normal using automatic channel, are cut when breaking down
Alternate channel operation is changed to, the alternate channel is analog channel.
There are two types of the methods of operation for the PLC adjusting controller: constant voltage and the constant excitation megnet current regulation method of operation, and two
The kind method of operation can switch without fluctuation online, and permanent exciting current method of operation operation is automatically switched to when PT broken string.
The synchronized-pulse control unit integrates the phase shift that phased chip realizes the PLC adjusting controller using TC787
Function.
The relevant information of the acquisition of the field regulator, working condition can be transferred to described by the communication unit
Terminal；The communication unit, which can also receive the query information that the terminal is sent and forward it to the PLC, adjusts control
Device, the PLC adjusting controller judges whether it is that preset terminal is sent out according to the query information received, if so, generating phase
The information answered simultaneously is sent to the terminal by the communication unit.
The terminal is computer or mobile phone.
Finally it should be noted that only illustrating the technical solution of the utility model in conjunction with above-described embodiment rather than limiting it
System.Those of ordinary skills in the art should understand that arriving, those skilled in the art can be to the specific implementation of the utility model
Mode is modified or replaced equivalently, but these modifications or change are being applied among pending claims.
Claims (5)
1. a kind of synchronous generator brushless excitation regulating system, which is characterized in that the excitation control system includes generator, encourages
Magnetic transformer, excitation winding intelligence rectification module, voltage/current mutual inductor, field regulator and terminal, the voltage/current
Mutual inductor is connect with the input terminal of the field regulator, and the field regulator intelligently rectifies mould with the excitation winding respectively
Block, terminal connection；The field regulator includes signal acquisition unit, PLC adjusting controller, synchronized-pulse control list
Member, D/A module, keyboard input module, display module, alarm module and communication unit, the PLC adjusting controller respectively with institute
State signal acquisition unit, the synchronized-pulse control unit, the keyboard input module, the display module, the alarm mould
Block is connected with the communication unit, and the D/A module is connected with the synchronized-pulse control unit；The PLC adjusts control
Device processed according to the on-off model of the collected generator operating parameter of the signal acquisition unit, degaussing switch, breaker with
And the control signal of the keyboard input module input, judge working condition locating for the generator, and then select corresponding
Optimized control method obtains corresponding phase-shifted control signal through operation, then is converted into simulation control electricity by the D/A module
Pressure, is finally sent to the excitation winding intelligence rectification module.
2. a kind of synchronous generator brushless excitation regulating system according to claim 1, which is characterized in that the signal is adopted
Collection unit can accurately measure network voltage, set end voltage, excitation voltage, stator current, rotor current real time electrical quantity signal with
And the on-off model of degaussing switch, breaker, and signal will be measured and be converted into digital signal, it is sent to by RS-485 bus
The PLC adjusting controller；The signal acquisition unit uses electromagnetic isolation and photoelectric isolation technology, can guarantee that voltage is defeated
Enter, electric current inputs and output tripartite is completely isolated.
3. a kind of synchronous generator brushless excitation regulating system according to claim 1, which is characterized in that the PLC tune
It saves controller and uses Siemens S7-300 PLC, operational capability is strong, and has store function, can pass through the key-press input mould
Block, the terminal realize parameter setting, parameter query, historical query function.
4. a kind of synchronous generator brushless excitation regulating system according to claim 1, which is characterized in that the synchronous arteries and veins
It rushes control unit and the phase shift function that phased chip realizes the PLC adjusting controller is integrated using TC787.
5. a kind of synchronous generator brushless excitation regulating system according to claim 1, which is characterized in that the terminal is
Computer or mobile phone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821366197.0U CN208908427U (en) | 2018-08-23 | 2018-08-23 | A kind of synchronous generator brushless excitation regulating system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821366197.0U CN208908427U (en) | 2018-08-23 | 2018-08-23 | A kind of synchronous generator brushless excitation regulating system |
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| CN208908427U true CN208908427U (en) | 2019-05-28 |
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| CN201821366197.0U Active CN208908427U (en) | 2018-08-23 | 2018-08-23 | A kind of synchronous generator brushless excitation regulating system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109120195A (en) * | 2018-08-23 | 2019-01-01 | 国网江苏省电力有限公司盐城供电分公司 | A kind of synchronous generator brushless excitation regulating system |
| CN110880892A (en) * | 2019-11-05 | 2020-03-13 | 武汉武水电气技术有限责任公司 | Control system of excitation adjusting device |
-
2018
- 2018-08-23 CN CN201821366197.0U patent/CN208908427U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109120195A (en) * | 2018-08-23 | 2019-01-01 | 国网江苏省电力有限公司盐城供电分公司 | A kind of synchronous generator brushless excitation regulating system |
| CN110880892A (en) * | 2019-11-05 | 2020-03-13 | 武汉武水电气技术有限责任公司 | Control system of excitation adjusting device |
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