CN115459648A - Slip control system and method for high-power pulse generator set - Google Patents
Slip control system and method for high-power pulse generator set Download PDFInfo
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- CN115459648A CN115459648A CN202211073380.2A CN202211073380A CN115459648A CN 115459648 A CN115459648 A CN 115459648A CN 202211073380 A CN202211073380 A CN 202211073380A CN 115459648 A CN115459648 A CN 115459648A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/10—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/006—Means for protecting the generator by using control
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/02—Details of the control
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Abstract
The invention belongs to the technical field of motor system control, and particularly relates to a slip control system and a slip control method for a high-power pulse generator set, wherein the slip control system comprises: the system comprises a 2500kw motor, a slip device, a main monitoring PC, a PLC master station, a slip control cabinet and a plurality of sets of slip control devices arranged in the slip control cabinet; the invention realizes the control of a high-parameter and high-precision slip starting mode, can meet the technical requirements of frequent starting of a high-power pulse generator set and linkage control of a plurality of sets of slip control devices, and can meet the requirements of safe starting of the generator set and stable acceleration according to given current.
Description
Technical Field
The invention belongs to the technical field of motor system control, and particularly relates to a slip control system and a slip control method for a high-power pulse generator set.
Background
The traditional motor rotor series resistance starting control mode is applied to low-power occasions, constant-torque starting of a stator current constant rotor loop series resistance is maintained by changing a slip resistance, and requirements on control parameters and accuracy are low. The traditional control system only supports starting from a stop state to the highest rotating speed, and the highest rotating speed which can be achieved by adopting the traditional slip control system to accelerate the motor is lower, so that the discharging requirement of the device experiment cannot be met. In addition, the existing slip control mode has large stator current fluctuation in the acceleration process, and cannot stably accelerate the unit according to the given current.
In the Tokamak device, a high-power pulse generator set is needed for supplying power, and the pulse generator set consists of a motor, a flywheel and a generator. The motor power of the high-power horizontal pulse generator set reaches 2500kW, the starting torque of the motor is large, and the starting time is long. According to the experimental requirements of the 2M device, the unit is required to be started up rapidly to 1500rpm within 20 minutes, and the discharging and re-accelerating operations are performed every 15 minutes during the experiment. The high-power pulse generator set adopts a liquid slip regulator (referred to as 'slip') to control the generator set, and a slip device is provided with three travel switches of a high position, a pre-positioning position and a low position, and comprises three operation modes of quick lifting, position lifting and accelerating. In the experimental process, the slip device needs to frequently act between pre-positioning and low-position again to realize the discharging and re-accelerating processes of the unit; the problem that how to ensure that over-current of the stator does not occur is solved because the distance between resistance solutions between the low-level polar plates of the slip device is only 2 mm, and the extremely high requirements of the generator set on parameters such as acceleration time, current fluctuation, torque stability and the like are also ensured, so that a problem to be solved is urgently needed to be solved, and therefore a slip control system and a slip control method capable of controlling high parameters and high precision in a high-power pulse generator set are needed to be designed to solve the above-mentioned technical problems.
Disclosure of Invention
The invention provides a slip control system and a slip control method for a high-power pulse generator set, which are used for solving the technical problems that in the prior art, a slip control device only supports the state switching from a stop state to the highest rotating speed, the highest rotating speed of an acceleration motor of the conventional slip control device is low, and the experimental discharge requirement cannot be met, and in addition, the control mode of the conventional slip control device has large stator current fluctuation in the acceleration process, so that the generator set cannot be accelerated stably according to the given current.
The technical scheme of the invention is as follows:
a slip control system for a high power pulse generator set, comprising: the system comprises a 2500kw motor, a slip device, a main monitoring PC, a PLC master station, a slip control cabinet and a plurality of sets of slip control devices arranged in the slip control cabinet; the 2500kw motor is connected with slip device and slip switch board respectively, include in each set of slip control device: a slip direct current speed regulator, a PID regulator, a slip PLC substation, a communication control module and a current measuring device,
a slip direct current speed regulator in the slip control device is connected with a slip PLC substation, a PID regulator is connected with a direct current motor in the slip control device, a communication control module is arranged in the slip PLC substation, and a current measuring device is connected with the PID regulator.
The main monitoring PC is connected with a PLC main station, and the PLC main station is further connected with a slip control cabinet.
And the slip PLC substations in each set of slip control device are all connected to the PLC master station through a slip control cabinet.
The slip device comprises a liquid resistor.
The 2500KW motor is started in a liquid resistance mode in the rotor series slip device.
The control logic of the slip PLC substation in each set of slip control device comprises: the method comprises the following steps that a slip control system is in an elevated operation mode, a slip control system is in a fast elevated operation mode, and a slip control system is in an accelerated operation mode;
when the slip control system operates in a quick-lifting operation mode, the given voltage of a direct-current speed regulator in the slip control device is 220V, and the slip device is quickly lifted to a preset position one within about 10 s;
when the slip control system operates in a high-level operation mode, the given voltage of a direct current speed regulator in the slip control device is 220V, and the slip device raises the high level;
when the slip control system operates in an acceleration operation mode, the given voltage of a direct current speed regulator in the slip control device is 180V, the slip control system adjusts a PID regulator by introducing the stator current of a unit as a feedback signal, and the slip device is changed from a high position or a preset position to a low position at one time.
The number of the plurality of sets of slip control devices is three, and the names of the three sets of slip control devices are respectively a serial number one slip control device, a serial number two slip control device and a serial number three slip control device.
The slip PLC substation and the PLC master station are communicated by adopting a PROFIBUS DP communication protocol; and an MPI communication protocol is adopted between the main monitoring PC and the PLC master station.
The master station PLC controls the three sets of slip control devices to successively accelerate according to a preset accelerating sequence, and the preset accelerating sequence of the three sets of slip control devices is a serial number three slip control device, a serial number one slip control device and a serial number two slip control device, so that only one set of slip control device is accelerated at the same time, and multiple sets of slip control devices are prevented from working at the same time.
Each set of slip control device has two control modes of local control and computer control, wherein the computer control mode is to control a PLC master station through a main monitoring PC and control a slip PLC substation connected with the PLC master station;
the local control mode directly controls the slip PLC substation through the slip control cabinet;
the computer control has priority in the two control modes of the local control and the computer control.
And when the slip control system operates in an accelerating way, the time delay is set in the starting stage.
Setting the numerical values of a stator current stop value and a stator current start value for the PID regulator; when the stator current exceeds a stator current stop value, the direct-current speed regulator stops; when the stator current is reduced to the stator current starting value, the starting of the direct current speed regulator is repeated.
A control method of the slip control system of the high-power pulse generator set comprises the following control steps:
the method comprises the following steps: when a PLC substation in the slip control device meets the start condition of the slip control system and receives a control or local control command of a main monitoring PC computer, the unit is started, and after the slip control device is started in a delayed mode, the direct-current speed regulator starts to work and executes an acceleration operation mode of the slip control system;
step two: the PID regulator receives a 2500KW motor stator current signal, controls the electrode descending speed, and finishes the electrode starting after the electrode reaches a low position.
Step three: if the unit discharges in the second step, the slip control system starts a quick-lifting operation mode, the given voltage of the direct-current speed regulator is 220V, the slip device quickly lifts to a preset position one within about 10s, the quick-lifting operation mode of the slip control system is started again after the discharge is finished, the PID regulator feeds back control work, and when the electrode reaches a low position, the quick-lifting operation mode is finished;
and when the unit stops in the second step, the slip control system executes a lifting operation mode, the given voltage of the direct-current speed regulator is 220V, and the slip device lifts the lifting position.
The invention has the beneficial effects that:
the slip control system and the control method thereof designed by the invention realize the control of a slip starting mode with high parameter and high precision, can meet the technical requirements of frequent starting of a high-power pulse generator set and linkage control of a plurality of sets of slip control devices, and can meet the requirements of safe starting of the generator set and stable acceleration according to given current.
In addition, the slip control device designed by the invention also has the following specific technical advantages:
1) The slip control system designed by the invention considers that when a plurality of sets of slip control devices work simultaneously, the plurality of sets of slip control devices operate by adopting a linkage control method, and the plurality of sets of slip control systems accelerate in sequence through linkage control among different sets of slip control devices, so that simultaneous acceleration is avoided. Only one set of slip device is ensured to accelerate at the same time, and the reliability and the operation parameters are improved.
2) The slip control device in the slip control system designed by the invention adopts three control operation modes, namely a fast lifting mode, a high-position lifting mode and an acceleration operation mode.
3) The control strategy of the slip control device is optimized, time delay is added in the starting stage of the accelerated running mode of the slip control device, and the overcurrent of the stator current of the generator set system is prevented during starting.
The invention can effectively improve the starting stability of the unit, avoid the impact of unstable starting on the unit structure, improve the starting current of the unit, effectively shorten the starting time of the unit, meet the requirements of shortening the starting time and starting stability, avoid the overcurrent phenomenon of the stator current of the unit and avoid the protective tripping of the unit in the starting process. The device can meet the requirement of high-parameter pulse discharge of the 2M tokamak device, and can shorten the discharge time interval from 20 minutes to 15 minutes.
Drawings
FIG. 1 is a schematic structural diagram of a slip control system according to the present invention;
FIG. 2 is a schematic diagram of a configuration network connection of a plurality of sets of slip control devices in the slip control system according to the present invention;
FIG. 3 is a control flow chart of a slip PLC substation in the slip control apparatus according to the present invention;
FIG. 4 is a block diagram of the PID regulator regulation process in the slip control device designed in accordance with the present invention;
FIG. 5 is a waveform plot of genset speed rise, genset stator current, genset rotor current, and genset rotor voltage;
Detailed Description
The slip control system and the slip control method for the high-power pulse generator set according to the present invention will be described in detail with reference to the accompanying drawings and embodiments.
A slip control system for a high power pulse generator set, comprising: the system comprises a 2500kw motor, a slip device, a main monitoring PC, a PLC master station, a slip control cabinet and a plurality of sets of slip control devices arranged in the slip control cabinet; the 2500kw motor is connected with slip device and slip switch board respectively, include in each set of slip control device: a slip direct current speed regulator, a PID regulator, a slip PLC substation, a communication control module and a current measuring device,
a slip direct current speed regulator in the slip control device is connected with a slip PLC substation, a PID regulator is connected with a direct current motor in the slip control device, a communication control module is arranged on the slip PLC substation, and a current measuring device is connected with the PID regulator.
The main monitoring PC is connected with the PLC main station, and the PLC main station is further connected with the slip control cabinet.
And the slip PLC substations in each set of slip control device are all connected to the PLC master station through slip control cabinets.
The slip device comprises a liquid resistor.
Still include in the slip switch board: the lifting and descending contactor, the control circuit relay, the current transformer, the current transducer and the digital input and output module in the slip control cabinet are all the same as the original slip control internal connection relationship.
The 2500KW motor is started in a liquid resistance mode in the rotor series slip device.
The control logic of the slip PLC substation in each set of slip control device comprises: the method comprises the following steps that a slip control system is in an increase running mode, a slip control system is in a fast increase running mode, and a slip control system is in an acceleration running mode;
when the slip control system operates in a fast-lifting operation mode, the given voltage of a direct-current speed regulator in the slip control device is 220V, and the slip device is quickly lifted to a preset position one within about 10 s;
when the slip control system operates in a high-level operation mode, the given voltage of a direct current speed regulator in the slip control device is 220V, and the slip device raises the high level;
when the slip control system operates in an acceleration operation mode, the given voltage of a direct-current speed regulator in the slip control device is 180V, the slip control system adjusts a PID (proportion integration differentiation) regulator by introducing the stator current of the unit as a feedback signal, and the slip device is changed from a high position to a low position at a moment of preset position.
The number of the plurality of sets of slip control devices is three, and the names of the three sets of slip control devices are respectively a serial number one slip control device, a serial number two slip control device and a serial number three slip control device.
The slip PLC substation and the PLC master station are communicated by adopting a PROFIBUS DP communication protocol; and an MPI communication protocol is adopted between the main monitoring PC and the PLC master station.
The master station PLC controls the three sets of slip control devices to successively accelerate according to a preset accelerating sequence, and the preset accelerating sequence of the three sets of slip control devices is a serial number three slip control device, a serial number one slip control device and a serial number two slip control device, so that only one set of slip control device is accelerated at the same time, and multiple sets of slip control devices are prevented from working at the same time.
Each set of slip control device has two control modes of local control and computer control, wherein the computer control mode is to control a PLC main station through a main monitoring PC and control a slip PLC sub-station connected with the PLC main station;
the local control mode directly controls the slip PLC substation through the slip control cabinet;
the computer control has priority in the two control modes of the local control and the computer control.
And when the slip control system operates in an accelerating way, the time delay is set in the starting stage.
Setting the numerical values of a stator current stop value and a stator current start value for the PID regulator; when the stator current exceeds a stator current stop value, the direct current speed regulator stops; when the stator current is reduced to the stator current starting value, the starting of the direct current speed regulator is repeated.
As shown in fig. 3; the control method of the slip control system of the high-power pulse generator set comprises the following control steps,
the method comprises the following steps: when a PLC substation in the slip control device meets the start condition of the slip control system and receives a control or local control command of a main monitoring PC computer, the unit is started, and after the slip control device is started in a delayed mode, the direct-current speed regulator starts to work and executes an acceleration operation mode of the slip control system;
step two: the PID regulator receives a 2500KW motor stator current signal, controls the electrode descending speed, and finishes the electrode starting after the electrode reaches a low position.
Step three: if the unit discharges in the second step, the slip control system starts a quick-lifting operation mode, the given voltage of the direct-current speed regulator is 220V, the slip device quickly lifts to a preset position one within about 10s, the quick-lifting operation mode of the slip control system is started again after the discharge is finished, the PID regulator feeds back control work, and when the electrode reaches a low position, the quick-lifting operation mode is finished;
and when the unit stops in the second step, the slip control system executes a lifting operation mode, the given voltage of the direct-current speed regulator is 220V, and the slip device lifts the lifting position.
The slip control device sets two speed parameters to drive the electrode to act, controls the selector switch to switch the speed mode through the control circuit relay, and adopts a lifting operation mode and a descending operation mode.
The operation mode of the specific embodiment comprises the following steps:
when the slip control device descends in an operation mode, 20s of time delay is added in a starting stage to prevent stator current from overflowing, the slip control device descends only after the time delay is up, and in a descending starting stage, the given voltage of the direct-current speed regulator is increased to 220V from 0V within 2s of a given slope. Setting a stator current stop set value and a start set value of a PID regulator, wherein the stator current is in inverse proportion to the given voltage of the DC speed regulator, when the current is 0, the electrode is descended at full speed according to the set parameter of the given voltage of the DC speed regulator of 180V, when the current stop set value is 248A, the given voltage of the DC speed regulator is 0V, the electrode stops descending, when the current is descended to the stop start value 248A, the given voltage of the DC speed regulator is more than 0V, and the electrode descends again. The difference value of 2A exists between the stator current stop set value and the start set value, so that the frequent start and stop of the direct current motor are avoided
FIG. 4 is a functional diagram of a PID regulator, and the conventional slip speed regulation is realized by controlling the start and stop of an electrode only by introducing a switch node signal and by the frequent action of an electrode operating mechanism or the frequent action of a speed regulating motor.
The device of the invention introduces PID regulation, the stator current of the motor is measured by a 400/5 current transformer, then the conversion is carried out by a circuit sensor of 5A/10V, the obtained voltage signal is introduced into a PID controller, the measured value of the stator of the motor is compared with the given value of the stator of the motor to obtain a deviation value, then the PID treatment is carried out on the deviation value, and the output of a direct current speed regulator drives a direct current motor to control the falling speed of a slip electrode, thereby changing the resistance value of a liquid resistor to regulate the stator current.
The slip resistance is changed along with the change of the displacement of the slip electrode, wherein the descending process of the slip electrode is a closed-loop control process. The stator current of the motor outputs the secondary current through the current transformer, the current sensor converts the secondary current into direct current voltage which is in direct proportion to the secondary current and outputs the direct current voltage, after the stator current setting signal is compared with the direct current signal output by the current sensor, the signal which is subjected to integral amplification by the PID feedback control unit controls the output of the direct current speed regulation power supply, and the output controls the electrode to reduce the rotating speed of the motor so that the liquid resistance is changed along with the stator current.
As shown in fig. 5, waveform 1 is a unit rotation speed increasing waveform, waveform 2 is a unit stator current, waveform 3 is a unit rotor current, and waveform 4 is a unit rotor voltage.
In fig. 5, when the unit is started up to 1500rpm in 18 minutes, the stator current is stable and close to the highest value of 248A during the whole starting process, and the unit starting process is reflected to be smooth and quick. The rotor voltage drops according to a certain slope and the rotor current is stable, so that the stable resistance drop of the slip device is reflected, and the speed regulating system is stable.
The slip control cabinet can be remotely monitored and controlled by a main monitoring PC during the operation of the unit. A PROFIBUS DP communication protocol is adopted to replace a large amount of remote wiring and wiring checking workload; the field bus communication greatly simplifies the maintenance amount of the system, reduces fault points and increases the reliability of the system.
The signal calling among all sets of slip systems is realized through the program, the program is convenient to read and write, and the readability of the program is improved; meanwhile, the execution states of variables and statements in the program can be monitored online in real time, and the states of all parameters and all equipment can be directly and dynamically displayed. The main monitoring PC machine not only realizes the monitoring of the working state of the slip system, but also has the functions of alarm display, data filing and the like.
In the device, a plurality of sets of slip control devices carry out interlocking operation through the master station PLC, and 3 sets of machine sets are accelerated according to the sequence of the sequence number 3-1-2, so that a plurality of sets of slip systems are prevented from working simultaneously. After the slip control device receives an acceleration command, when the slip device receives a pole plate position preset position I, a central control command release signal, a command return condition signal and other slip control device non-acceleration signals, the system starts acceleration, when the slip control device receives a low-position signal, the system stops acceleration, and when the rotating speed reaches 1500rpm, the slip control device sends an acceleration completion signal. When the last set of slip control device sends an acceleration completion signal, the other slip control devices meet the self acceleration condition, and the slip control device starts the acceleration process. The problem of linkage of a plurality of sets of slip control systems is effectively solved, the acceleration process of the unit is stable and free of fluctuation, the unit can be quickly started to the highest rotating speed, and the operation safety of the unit is protected.
In addition, the time delay function is introduced into the acceleration mode starting stage of the slip control system designed by the invention, the stator current of the group system is prevented from overflowing during starting, the slip device is descended only after the delay time is up, slope control is added into the descent starting stage, the given voltage of the direct current speed regulator rises according to the slope, and the descent process has an acceleration process.
While the embodiments of the present invention have been described in detail, the present invention is not limited to the above-described examples, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (12)
1. A slip control system for a high power pulse generator set, comprising: the system comprises a 2500kw motor, a slip device, a main monitoring PC, a PLC master station, a slip control cabinet and a plurality of sets of slip control devices arranged in the slip control cabinet; the 2500kw motor is connected with slip device and slip switch board respectively, include in each set of slip control device: a slip direct current speed regulator, a PID regulator, a slip PLC substation, a communication control module and a current measuring device,
a slip direct current speed regulator in the slip control device is connected with a slip PLC substation, a PID regulator is connected with a direct current motor in the slip control device, a communication control module is arranged in the slip PLC substation, and a current measuring device is connected with the PID regulator.
The main monitoring PC is connected with a PLC main station, and the PLC main station is further connected with a slip control cabinet.
2. The slip control system of claim 1, wherein: and the slip PLC substations in each set of slip control device are all connected to the PLC master station through a slip control cabinet.
3. The slip control system of claim 2, wherein: the slip device comprises a liquid resistor.
4. The slip control system of claim 3, wherein: the 2500KW motor is started in a liquid resistance mode in the rotor series slip device.
5. The slip control system of claim 4, wherein: the control logic of the slip PLC substation in each set of slip control device comprises: the method comprises the following steps that a slip control system is in an increase running mode, a slip control system is in a fast increase running mode, and a slip control system is in an acceleration running mode;
when the slip control system operates in a fast-lifting operation mode, the given voltage of a direct-current speed regulator in the slip control device is 220V, and the slip device is quickly lifted to a preset position one within about 10 s;
when the slip control system operates in a high-level operation mode, the given voltage of a direct current speed regulator in the slip control device is 220V, and the slip device raises the high level;
when the slip control system operates in an acceleration operation mode, the given voltage of a direct current speed regulator in the slip control device is 180V, the slip control system adjusts a PID regulator by introducing the stator current of a unit as a feedback signal, and the slip device is changed from a high position or a preset position to a low position at one time.
6. The slip control system of claim 5, wherein: the number of the plurality of sets of slip control devices is three, and the names of the three sets of slip control devices are respectively a serial number one slip control device, a serial number two slip control device and a serial number three slip control device.
7. The slip control system of claim 6, wherein: the slip PLC substation and the PLC master station are communicated by a PROFIBUS DP communication protocol; and an MPI communication protocol is adopted between the main monitoring PC and the PLC master station.
8. The slip control system of claim 7, wherein: the master station PLC controls the three sets of slip control devices to perform accelerated operation successively according to a preset acceleration sequence, and the three sets of slip control devices sequentially comprise a serial number three slip control device, a serial number one slip control device and a serial number two slip control device according to the preset acceleration sequence, so that only one set of slip control device is ensured to accelerate at the same time, and multiple sets of slip control devices are prevented from working simultaneously.
9. The slip control system of claim 8, wherein: each set of slip control device has two control modes of local control and computer control, wherein the computer control mode is to control a PLC master station through a main monitoring PC and control a slip PLC substation connected with the PLC master station;
the local control mode directly controls the slip PLC substation through the slip control cabinet;
the computer control has priority in the two control modes of the local control and the computer control.
10. The slip control system of claim 9, wherein: and when the slip control system operates in an accelerating way, the time delay is set in the starting stage.
11. The slip control system of claim 10, wherein: setting the numerical values of a stator current stop value and a stator current start value for the PID regulator; when the stator current exceeds a stator current stop value, the direct current speed regulator stops; when the stator current is reduced to the stator current starting value, the starting of the direct current speed regulator is repeated.
12. A control method of a slip control system of a high power pulse generator set according to any one of claims 1 to 9, characterized by comprising the following control steps:
the method comprises the following steps: when a PLC (programmable logic controller) substation in the slip control device meets the starting condition of the slip control system and receives a control command or a local control command of a main monitoring PC (personal computer), the unit is started, and after the slip control device is started in a delayed mode, the direct-current speed regulator starts to work and executes an accelerated running mode of the slip control system;
step two: the PID regulator receives a 2500KW motor stator current signal, controls the electrode descending speed, and finishes the electrode starting after the electrode reaches a low position.
Step three: if the unit discharges in the second step, the slip control system starts a quick-lifting operation mode, the given voltage of the direct-current speed regulator is 220V, the slip device quickly lifts to a preset position one within about 10s, the quick-lifting operation mode of the slip control system is started again after the discharge is finished, the PID regulator feeds back control work, and when the electrode reaches a low position, the quick-lifting operation mode is finished;
and when the unit stops in the second step, the slip control system executes a lifting operation mode, the given voltage of the direct-current speed regulator is 220V, and the slip device lifts the lifting position.
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| CN105027427A (en) * | 2013-02-28 | 2015-11-04 | Ge延巴赫两合无限公司 | Method for identifying pole slip |
| CN107039992A (en) * | 2017-03-23 | 2017-08-11 | 许继电气股份有限公司 | The startup control method and control system of MMC transverters based on droop control |
| US20210215733A1 (en) * | 2020-01-09 | 2021-07-15 | Caterpillar Inc. | Generator Pole Slip Detection |
| CN114738187A (en) * | 2022-05-09 | 2022-07-12 | 内蒙古京能乌兰伊力更风力发电有限责任公司 | Method for controlling power of variable-speed wind generating set based on slip |
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| CN105027427A (en) * | 2013-02-28 | 2015-11-04 | Ge延巴赫两合无限公司 | Method for identifying pole slip |
| CN107039992A (en) * | 2017-03-23 | 2017-08-11 | 许继电气股份有限公司 | The startup control method and control system of MMC transverters based on droop control |
| US20210215733A1 (en) * | 2020-01-09 | 2021-07-15 | Caterpillar Inc. | Generator Pole Slip Detection |
| CN114738187A (en) * | 2022-05-09 | 2022-07-12 | 内蒙古京能乌兰伊力更风力发电有限责任公司 | Method for controlling power of variable-speed wind generating set based on slip |
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