CN108599109A - The three phase mains of wind power pitch-controlled system manages system and method - Google Patents
The three phase mains of wind power pitch-controlled system manages system and method Download PDFInfo
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- CN108599109A CN108599109A CN201810767698.8A CN201810767698A CN108599109A CN 108599109 A CN108599109 A CN 108599109A CN 201810767698 A CN201810767698 A CN 201810767698A CN 108599109 A CN108599109 A CN 108599109A
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- voltage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/1216—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for AC-AC converters
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Wind Motors (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
The invention discloses a kind of wind power pitch-controlled system three-phase electricity management systems, including voltage monitoring module and protection module, the voltage monitoring module includes uncontrollable rectifier circuit, divider resistance and regulator circuit, protection module includes control circuit, the uncontrollable rectifier circuit carries out rectification to the 400V alternating currents of inlet wire and is followed to the DC bus-bar voltage after rectification, the divider resistance divides DC bus-bar voltage, the regulator circuit monitors the DC bus-bar voltage after partial pressure in real time, the closure of circuit and disjunction between the control circuit control inlet wire 400V alternating currents and driver.The present invention protect pitch-controlled system because domestic power grid environment it is unstable caused by harmonic pollution, avoid the voltage of driver DC bus from fluctuating, ensure the performance of pitch system, make Wind turbine work it is more stable.
Description
Technical field
The present invention relates to the technical fields of wind power system power management, and in particular to a kind of wind power pitch-controlled system three phase mains
Manage system and method.
Background technology
Pitch system is the important component of Wind turbine, and pitch-controlled system controls wind wheel by controlling the angle of blade
Rotating speed, and then control the output power of wind turbine, and so that fan safe is shut down by way of aerodynamic braking.
The energy source of pitch-controlled system is become power grid three-phase 690V alternating currents by the transformer of Wind turbine three
Phase 400V alternating currents, it is direct current that the driver principles of pitch motor, which are by 400V AC rectifications, then is output to through inverter
Machine winding achievees the purpose that control motor.
At present the pitch-controlled system of major part Wind turbines there is no to the 400V alternating currents of inlet wire carry out effective detection with
And management and control, and the direct current through over commutation follows always alternating voltage peak on driver.I.e.：
Since domestic power grid environment is not continual and steady, when and the case where will appear voltage fluctuation, the harmonic pollution of wind power system
Seriously, this voltage for also allowing for driver DC bus fluctuates, if voltage ripple of power network is larger so that DC bus electricity
Height is pressed through, has been more than that pitch system bears limit value, causes pitch system that irreversible damage occurs.
Invention content
The present invention in order to solve the above technical problems, and provides a kind of three-phase electricity management system of wind power pitch-controlled system
And its method.
The present invention is realized according to following technical scheme：
The wind power pitch-controlled system three-phase electricity management system of the present invention, including voltage monitoring module and protection module, the electricity
It includes uncontrollable rectifier circuit, divider resistance and regulator circuit to press monitoring modular, and protection module includes control circuit, and described does not control
Rectification circuit carries out rectification to the 400V alternating currents of inlet wire and is followed to the DC bus-bar voltage after rectification, the partial pressure
Resistance divides DC bus-bar voltage, and the regulator circuit monitors the DC bus-bar voltage after partial pressure in real time,
The closure of circuit and disjunction between the control circuit control inlet wire 400V alternating currents and driver.
The uncontrollable rectifier circuit includes the three-phase commutation bridge of diode, is direct current by the 400V AC rectifications of inlet wire
Electricity.
The divider resistance includes concatenated first partial pressure group and the second partial pressure group, the first partial pressure group and the second partial pressure group
It is connected in turn between DC bus positive electrode and negative electrode, the first partial pressure group includes concatenated 3rd resistor, the 5th resistance, the 7th electricity
Resistance, the 9th resistance and twelfth resistor, the second partial pressure group include concatenated thirteenth resistor, the 14th resistance and the 15th electricity
Resistance, the second partial pressure group are also parallel with the 9th capacitance.
The regulator circuit includes voltage regulation resistance and TL431, and voltage regulation resistance includes the first resistor being sequentially connected in series, second
The cathode of resistance, the 4th resistance, the 6th resistance and the 8th resistance, TL431 is connect by voltage regulation resistance with DC bus anode,
The anode of TL431 is connect with DC bus cathode, and the reference pole of TL431 is connected between the first partial pressure group and the second partial pressure group.
The control circuit includes relay drive circuit, relay and contactor, relay drive circuit connection after
Electric apparatus coil, relay normally closed contact connect contactor, and contactor connects 24V voltages, and contactor normally-closed contact is arranged in inlet wire
400V alternating currents and driver between.
The relay drive circuit includes Darlington transistor, and Darlington transistor collector passes through the tenth resistance and eleventh resistor
The reference pole of TL431 is connected, Darlington transistor emitter is connected between the 6th resistance of voltage regulation resistance and the 8th resistance, Darlington transistor
Collector connection relay coil, Darlington transistor emitter by the 4th diode connect DC bus cathode, the tenth resistance with
By the 4th capacitance connection DC bus cathode between eleventh resistor, relay coil and the 5th diodes in parallel and it connect straight
Flow busbar cathode.
The wind power pitch-controlled system three phase mains management method of the present invention, is as follows：
Step 1, uncontrollable rectifier circuit carry out rectification to the 400V alternating currents of inlet wire, and to the DC bus-bar voltage after rectification into
Row follows, and direct current is delivered to divider resistance；
Step 2, divider resistance divides DC bus-bar voltage using the first partial pressure group and the second partial pressure group, after partial pressure
Direct current is delivered to regulator circuit；
Step 3, regulator circuit monitor the DC bus-bar voltage after partial pressure in real time；
Step 4, regulator circuit drive control circuit circuit between inlet wire 400V alternating currents and driver are closed and are divided
It is disconnected.
In the step four, when the DC bus-bar voltage after partial pressure reaches 1.2 times of regulator circuit rated voltage, surely
The cathode of volt circuit TL431 is connected with anode, and makes Darlington transistor driving conducting, Darlington transistor drive control circuit repeat circuit
Coil is connected, and relay normally closed contact is separated, and contactor is connected to 24V voltages, and contactor normally-closed contact separates, disjunction inlet wire
Circuit between 400V alternating currents and driver；
When DC bus-bar voltage after partial pressure is restored to 1.125 times of regulator circuit rated voltage, the moon of regulator circuit TL431
Pole and plate cut-off, and make Darlington transistor driving cut-off, the cut-off of Darlington transistor drive control circuit repeat circuit coil, relay
Normally-closed contact is attracted, and contactor is disconnected with 24V voltages, and contactor normally-closed contact is attracted, and is connected to the 400V alternating currents of inlet wire and is driven
Circuit between dynamic device.
The invention has the advantages and positive effects that：
The present invention protect pitch-controlled system because domestic power grid environment it is unstable caused by harmonic pollution, avoid driver direct current female
The voltage of line fluctuates, and ensures the performance of pitch system, keeps Wind turbine work more stable.
Description of the drawings
Fig. 1 is the topological diagram of the present invention；
Fig. 2 is the circuit diagram of uncontrollable rectifier circuit of the present invention；
Fig. 3 is the circuit diagram of divider resistance and regulator circuit of the present invention；
Fig. 4 is the circuit diagram of control circuit of the present invention；
Fig. 5 is the workflow circuit diagram of the present invention.
Specific implementation mode
The present invention will be described in detail with reference to the accompanying drawings and embodiments.
As shown in Figure 1, the wind power pitch-controlled system three-phase electricity management system of the present invention, including voltage monitoring module and protection
Module, the voltage monitoring module include uncontrollable rectifier circuit, divider resistance and regulator circuit, and protection module includes control electricity
Road, the uncontrollable rectifier circuit to the 400V alternating currents of inlet wire carry out rectification and to the DC bus-bar voltage after rectification carry out with
With the divider resistance divides DC bus-bar voltage, and the regulator circuit is to the DC bus-bar voltage after partial pressure
It is monitored in real time, the control circuit controls the closure of circuit and disjunction between inlet wire 400V alternating currents and driver.
As shown in Fig. 2, the uncontrollable rectifier circuit includes by the first diode D1, the second diode D2, the three or two pole
The three-phase commutation bridge of pipe D3, the 6th diode D6, the 7th diode D7, the 8th diode D8, the 400V alternating currents of inlet wire is whole
Stream is direct current.
As shown in figure 3, the divider resistance includes concatenated first partial pressure group and the second partial pressure group, the first partial pressure group and
Second partial pressure group is connected in turn between DC bus positive electrode and negative electrode, and the first partial pressure group includes concatenated 200K Ω 3rd resistors
R3, the 5th resistance R5 of 200K Ω, the 7th resistance R7 of 200K Ω, the 9th resistance R9 and 51K Ω twelfth resistor R12 of 100K Ω, the
Two partial pressure groups include concatenated 2K Ω thirteenth resistors R13,910 Ω the 14th resistance R14 and the 15th resistance R15 of 20 Ω, and
Two partial pressure groups are also parallel with 25V, the 9th capacitance C9 of 4.7 μ F.
The regulator circuit includes voltage regulation resistance and TL431, and voltage regulation resistance includes the 25K Ω first resistors being sequentially connected in series
R1, the 4th resistance R4 of 25K Ω second resistances R2,25K Ω, the 8th resistance R8 of the 6th resistance R6 and 10K Ω of 25K Ω, the moon of TL431
Pole is connect by voltage regulation resistance with DC bus anode, and the anode of TL431 is connect with DC bus cathode, the reference pole of TL431
It is connected between the first partial pressure group and the second partial pressure group.
As shown in figure 4, the control circuit includes relay drive circuit, relay and contactor, relay driving
Circuit connects relay coil, and relay normally closed contact connects contactor, and contactor connects 24V voltages, contactor normally-closed contact
It is arranged between the 400V alternating currents and driver of inlet wire.
The relay drive circuit includes Darlington transistor, Darlington transistor collector by the tenth resistance R10 of 150K Ω and
The reference pole of 470K Ω eleventh resistors R11 connections TL431, Darlington transistor emitter are connected to the 6th resistance of voltage regulation resistance and
Between eight resistance, Darlington transistor collector connection relay coil, Darlington transistor emitter is straight by the 4th diode D4 connections
Busbar cathode is flowed, by 25V, the 4th capacitance C4 connection DC bus cathode of 4.7 μ F between the tenth resistance and eleventh resistor, after
Electric apparatus coil is in parallel with the 5th diode D5 and connect DC bus cathode.
The wind power pitch-controlled system three phase mains management method of the present invention, is as follows：
Step 1, uncontrollable rectifier circuit carry out rectification to the 400V alternating currents of inlet wire, and to the DC bus-bar voltage after rectification into
Row follows, and direct current is delivered to divider resistance；
Step 2, divider resistance divides DC bus-bar voltage using the first partial pressure group and the second partial pressure group, after partial pressure
Direct current is delivered to regulator circuit；
Step 3, regulator circuit monitor the DC bus-bar voltage after partial pressure in real time；
Step 4, regulator circuit drive control circuit circuit between inlet wire 400V alternating currents and driver are closed and are divided
It is disconnected.
In the step four, when the DC bus-bar voltage after partial pressure reaches 1.2 times of regulator circuit rated voltage, surely
The cathode of volt circuit TL431 is connected with anode, and makes Darlington transistor driving conducting, Darlington transistor drive control circuit repeat circuit
Coil is connected, and relay normally closed contact is separated, and contactor is connected to 24V voltages, and contactor normally-closed contact separates, disjunction inlet wire
Circuit between 400V alternating currents and driver；
When DC bus-bar voltage after partial pressure is restored to 1.125 times of regulator circuit rated voltage, the moon of regulator circuit TL431
Pole and plate cut-off, and make Darlington transistor driving cut-off, the cut-off of Darlington transistor drive control circuit repeat circuit coil, relay
Normally-closed contact is attracted, and contactor is disconnected with 24V voltages, and contactor normally-closed contact is attracted, and is connected to the 400V alternating currents of inlet wire and is driven
Circuit between dynamic device.
Under normal circumstances, pitch-controlled system normal work, contacts of contactor is in attracting state, 400V exchanges to network voltage
In electric regular supply to system.
Under network voltage rising condition, DC bus voltage following pitch-controlled system driver after voltage monitoring mould rectification
DC bus-bar voltage, when the DC bus-bar voltage after rectification is increased to 1.2 times of load voltage value or more, due to regulator circuit
The reference voltage value 2.5V of TL431, DC bus-bar voltage is more than setting value, TL431 drive control circuit repeat circuits after partial pressure
Action, makes contactor disconnect, power grid is detached with system, achievees the purpose that protection system.
The present invention protect pitch-controlled system because domestic power grid environment it is unstable caused by harmonic pollution, avoid driver straight
The voltage of stream busbar fluctuates, and ensures the performance of pitch system, keeps Wind turbine work more stable.
The embodiments of the present invention have been described in detail above, but content is only the preferred embodiment of the present invention,
It should not be construed as limiting the practical range of the present invention.Any changes and modifications in accordance with the scope of the present application,
It should all still fall within the scope of the patent of the present invention.
Claims (8)
1. a kind of wind power pitch-controlled system three-phase electricity management system, including voltage monitoring module and protection module, it is characterised in that：
The voltage monitoring module includes uncontrollable rectifier circuit, divider resistance and regulator circuit, and protection module includes control circuit, institute
The uncontrollable rectifier circuit stated carries out rectification to the 400V alternating currents of inlet wire and is followed to the DC bus-bar voltage after rectification, institute
The divider resistance stated divides DC bus-bar voltage, and the regulator circuit carries out the DC bus-bar voltage after partial pressure real
When monitor, the control circuit controls the closure of circuit and disjunction between inlet wire 400V alternating currents and driver.
2. wind power pitch-controlled system three-phase electricity management system according to claim 1, it is characterised in that：Described not controlling is whole
Current circuit includes the three-phase commutation bridge of diode, is direct current by the 400V AC rectifications of inlet wire.
3. wind power pitch-controlled system three-phase electricity management system according to claim 1, it is characterised in that：The partial pressure electricity
Resistance includes concatenated first partial pressure group and the second partial pressure group, and the first partial pressure group and the second partial pressure group are being connected to DC bus in turn just
Between pole and cathode, the first partial pressure group includes concatenated 3rd resistor, the 5th resistance, the 7th resistance, the 9th resistance and the 12nd
Resistance, the second partial pressure group include concatenated thirteenth resistor, the 14th resistance and the 15th resistance, and the second partial pressure group is also parallel with
9th capacitance.
4. wind power pitch-controlled system three-phase electricity management system according to claim 1, it is characterised in that：The voltage stabilizing electricity
Road includes voltage regulation resistance and TL431, and voltage regulation resistance includes the first resistor being sequentially connected in series, second resistance, the 4th resistance, the 6th electricity
Resistance and the 8th resistance, the cathode of TL431 are connect by voltage regulation resistance with DC bus anode, the anode and DC bus of TL431
Cathode connects, and the reference pole of TL431 is connected between the first partial pressure group and the second partial pressure group.
5. wind power pitch-controlled system three-phase electricity management system according to claim 1, it is characterised in that：The control electricity
Road includes relay drive circuit, relay and contactor, and relay drive circuit connects relay coil, and relay is normally closed to be touched
Point connection contactor, contactor connect 24V voltages, contactor normally-closed contact be arranged 400V alternating currents and driver in inlet wire it
Between.
6. wind power pitch-controlled system three-phase electricity management system according to claim 5, it is characterised in that：The relay
Driving circuit includes Darlington transistor, and Darlington transistor collector is connected the reference pole of TL431 with eleventh resistor by the tenth resistance, reached
Islington pipe emitter is connected between the 6th resistance of voltage regulation resistance and the 8th resistance, Darlington transistor collector connection relay line
Circle, Darlington transistor emitter connect DC bus cathode by the 4th diode, pass through between the tenth resistance and eleventh resistor
4th capacitance connection DC bus cathode, relay coil and the 5th diodes in parallel and connect DC bus cathode.
7. a kind of wind power pitch-controlled system three phase mains management method, it is characterised in that：It is as follows：
Step 1, uncontrollable rectifier circuit carry out rectification to the 400V alternating currents of inlet wire, and to the DC bus-bar voltage after rectification into
Row follows, and direct current is delivered to divider resistance；
Step 2, divider resistance divides DC bus-bar voltage using the first partial pressure group and the second partial pressure group, after partial pressure
Direct current is delivered to regulator circuit；
Step 3, regulator circuit monitor the DC bus-bar voltage after partial pressure in real time；
Step 4, regulator circuit drive control circuit circuit between inlet wire 400V alternating currents and driver are closed and are divided
It is disconnected.
8. wind power pitch-controlled system three phase mains management method according to claim 7, it is characterised in that：The step four
In, when the DC bus-bar voltage after partial pressure reaches 1.2 times of regulator circuit rated voltage, the cathode of regulator circuit TL431 with
Anode is connected, and makes Darlington transistor driving conducting, the conducting of Darlington transistor drive control circuit repeat circuit coil, and relay is normally closed
Contact separates, and contactor is connected to 24V voltages, and contactor normally-closed contact separates, the 400V alternating currents of disjunction inlet wire and driver it
Between circuit；
When DC bus-bar voltage after partial pressure is restored to 1.125 times of regulator circuit rated voltage, the moon of regulator circuit TL431
Pole and plate cut-off, and make Darlington transistor driving cut-off, the cut-off of Darlington transistor drive control circuit repeat circuit coil, relay
Normally-closed contact is attracted, and contactor is disconnected with 24V voltages, and contactor normally-closed contact is attracted, and is connected to the 400V alternating currents of inlet wire and is driven
Circuit between dynamic device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810767698.8A CN108599109A (en) | 2018-07-13 | 2018-07-13 | The three phase mains of wind power pitch-controlled system manages system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810767698.8A CN108599109A (en) | 2018-07-13 | 2018-07-13 | The three phase mains of wind power pitch-controlled system manages system and method |
Publications (1)
| Publication Number | Publication Date |
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| CN108599109A true CN108599109A (en) | 2018-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810767698.8A Pending CN108599109A (en) | 2018-07-13 | 2018-07-13 | The three phase mains of wind power pitch-controlled system manages system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112531652A (en) * | 2020-12-16 | 2021-03-19 | 哈尔滨理工大学 | Overvoltage protection device applied to active power filter |
-
2018
- 2018-07-13 CN CN201810767698.8A patent/CN108599109A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112531652A (en) * | 2020-12-16 | 2021-03-19 | 哈尔滨理工大学 | Overvoltage protection device applied to active power filter |
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Effective date of registration: 20210922 Address after: 300308 No. 100, Hangtian Road, Tianjin pilot free trade zone (Airport Economic Zone), Binhai New Area, Tianjin Applicant after: TIANJIN RUIYUAN ELECTRICAL Co.,Ltd. Address before: No.1 Xinghua No.7 Branch Road, economic development zone, Xiqing District, Tianjin Applicant before: RENERGY ELECTRIC TIANJIN Ltd. |