CN117498280A - Driving protection system and method for fully-controlled device series valve - Google Patents
Driving protection system and method for fully-controlled device series valve Download PDFInfo
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- CN117498280A CN117498280A CN202311433269.4A CN202311433269A CN117498280A CN 117498280 A CN117498280 A CN 117498280A CN 202311433269 A CN202311433269 A CN 202311433269A CN 117498280 A CN117498280 A CN 117498280A
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000001514 detection method Methods 0.000 claims abstract description 93
- 238000004891 communication Methods 0.000 claims description 15
- 239000003990 capacitor Substances 0.000 claims description 9
- 230000001360 synchronised effect Effects 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 3
- 239000013307 optical fiber Substances 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 230000005669 field effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 238000003199 nucleic acid amplification method Methods 0.000 description 2
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- 229910044991 metal oxide Inorganic materials 0.000 description 1
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Classifications
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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
- H02H7/22—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 distribution gear, e.g. bus-bar systems; for switching devices
- H02H7/222—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 distribution gear, e.g. bus-bar systems; for switching devices for switches
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
- H02M1/088—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
- H02M1/092—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices the control signals being transmitted optically
Abstract
The invention relates to the technical field of power electronics and discloses a drive protection system and a method for a fully-controlled device serial valve. The invention solves the problem that the device is difficult to accurately protect in time under various fault detection working conditions by adopting a mode of driving a fault protection set, realizes multi-fault detection and protection in the running process of the fully-controlled device serial valve, and provides a reliable driving protection system for the application of the fully-controlled device serial technology.
Description
Technical Field
The invention relates to the technical field of power electronics, in particular to a drive protection system and method of a fully-controlled device series valve.
Background
The medium-high voltage power electronic converter valve is a core device for new energy network access and is also a core device for constructing a flexible AC/DC power transmission and distribution system. The power electronic converter valve directly connects all the control devices in series to improve the voltage withstand level of the converter valve device, and connects a plurality of all the control devices such as metal-oxide-semiconductor field effect transistors (Metal Oxide Semiconductor Field Effect Transistor, MOSFET) or insulated gate bipolar transistors (Insulated Gate Bipolar Transistor, IGBT) in series to replace a switch unit in a conventional circuit topology, so that the input voltage withstand level and the output voltage withstand level of the power electronic converter valve can be directly improved to meet the requirement of medium-high voltage application occasions on the voltage withstand level of the power electronic converter valve.
In the application of the fully-controlled device series converter valve, when the driving control and protection of the fully-controlled device fail, the voltage of the fully-controlled device is unbalanced, and in severe cases, the device is in overvoltage failure, so that the converter valve device is damaged, and therefore, it is important to ensure the safe and controllable operation of the fully-controlled device.
At present, the driving protection mode of the full-control device mainly comprises short circuit protection and overvoltage protection, and the full-control device is shut down and protected by identifying whether short circuit and overvoltage occur or not, so that failure and damage of the full-control device caused by overcurrent or overvoltage are avoided. However, in the practical application of the fully-controlled device serial valve, the failure detection is not timely and accurate enough, and the fully-controlled device serial valve device is easy to fail due to driving misoperation or non-operation, so that the converter valve device is damaged.
Disclosure of Invention
In view of the above, the invention provides a driving protection system and a driving protection method for a fully-controlled device serial valve, which are used for solving the problems that the fully-controlled device serial valve is invalid and a converter valve device is damaged due to the fact that failure detection is not timely and accurate enough and driving misoperation or non-operation easily occurs.
In a first aspect, the present invention provides a drive protection system for a fully-controlled device series valve, the series valve being formed by connecting a plurality of fully-controlled devices in series, the drive protection system comprising: the device comprises a main control module, a plurality of light-in light-out modules and a plurality of driving modules, wherein one full-control device of each serial valve is connected with one driving module to form a valve string unit, and the driving module of each valve string unit is connected with the main control module through one light-in light-out unit; the light-in and light-out module is connected with other light-in and light-out modules; the main control module is used for sending a driving signal to the light-in and light-out module, the light-in and light-out module is used for sending the driving signal to the driving module as a multi-channel synchronous serial valve driving signal, and the driving module is used for processing the serial valve driving signal and then sending the processed serial valve driving signal to a corresponding full-control device; the driving module is used for detecting various types of faults of the fully-controlled device in real time; the main control module is used for receiving the fault information detected by the driving module through the light-in light-out unit, processing and latching the fault information and sending a locking signal to the driving module.
The driving protection system mainly comprises a main control module, an optical input/output module and a driving module. The main control module is connected with the N light-in and light-out modules through duplex optical fiber communication links, and meanwhile, the light-in and light-out modules are connected through duplex optical fiber communication links. On one hand, the timely transmission of control signals between the main control module and the light-in and light-out modules and the timely reporting of fault signals are ensured; on the other hand, the signal synchronization among the signals of the light-in and light-out modules and the synchronization of the signals under driving are ensured.
In an alternative embodiment, the main control module includes: the system comprises a main control system part and a fault protection set processing part, wherein the main control system part is connected with the light-in and light-out module and is used for sending a driving signal or a locking signal to the light-in and light-out module; the fault protection set processing part is connected with the light-in and light-out module and is used for receiving fault information detected by the driving module, processing and latching the fault information.
The main control module consists of a main control system part and a fault protection set processing part. The main control system part is responsible for the overall control processing and driving issuing of the serial valves, and the fault protection set processing part is responsible for fault time sequence processing and fault latching. Through the cooperative processing of the main control system part and the fault protection set part. On one hand, the cooperative processing of the driving protection logic among the modules and the timely issuing of effective driving are ensured; on the other hand, the cooperative protection of each driving module of the series valve is ensured through the lumped processing of a protection set mode. The method can effectively reduce the non-equalizing phenomenon and the damage risk of devices caused by the inconsistent protection of all the fully-controlled devices of the series valve, and improves the overall performance stability of the series valve.
In an alternative embodiment, the light in-light out module includes: the system comprises a main control module, a sending part and a receiving part, wherein the main control module is used for controlling the operation states of the sending part and the receiving part; the transmitting part is connected with the driving module and is used for transmitting a serial valve driving signal or a locking signal to the driving module; the receiving part is connected with the driving module and is used for receiving fault information.
The light input/output module of the present invention is composed of a first control section, a transmitting section, and a receiving section. The first control part is responsible for the overall control of the modules, processes the driving signals of all the control devices of the valve string unit, and transmits the driving signals to all the driving modules of the valve string unit through the multipath transmission optical fibers of the transmission part. The fault feedback signals of the driving modules of the valve string unit are transmitted to the light input and light output modules through the multipath receiving optical fibers of the receiving part. The light input and light output module is in communication connection with the valve string unit multi-drive module; on one hand, the integral control of the main control module to the valve string unit is effectively improved. On the other hand, the flexible configuration and control of the serial quantity of the full control devices in the valve string unit are effectively improved.
In an alternative embodiment, the driving module includes: the second control part is connected with the light input and light output module, the driving part and the fault detection part and is used for controlling the operation states of the driving part and the fault detection part based on a serial valve driving signal or a locking signal; the driving part is connected with the full-control device and is used for transmitting a serial valve driving signal or a locking signal to the full-control device; the fault detection part is connected with the full-control type device and carries out various fault detection on the full-control type device in real time.
The driving module of the present invention is composed of a second control section, a driving section and a failure detection section. The second control part is responsible for the control processing of the driving signal and the fault detection signal, the driving part is responsible for the power amplification of the driving signal, and the fault detection part is responsible for the fault detection of the driving module and the power module. Through the cooperative processing of the driving modules. On one hand, the independent driving of all the full-control devices of the series valve is realized; on the other hand, the fault detection function of the driving pair valve string unit is effectively improved.
In an alternative embodiment, the driving part includes: and a power amplifying circuit.
In an alternative embodiment, a power amplification circuit includes: the first resistor, the second resistor, the third resistor, the fourth resistor, the capacitor, the first switch and the second switch, wherein a first end of the first switch inputs a first voltage, a second end of the first switch is connected with the first end of the first resistor, a control end of the first switch is connected with the second control part through the second resistor, and a control end of the first switch is also connected with a control end of the second switch; the first end of the second switch is connected with the first end of the third resistor, and the second end of the second switch inputs a second voltage; the second end of the first resistor and the second end of the second resistor are connected with the first end of the capacitor and the first end of the fourth resistor; the second end of the capacitor and the second end of the fourth resistor are grounded; the second end of the fourth resistor is connected with the control end of the full-control device.
In an alternative embodiment, the fault detection types include: power supply detection, communication detection, drive detection, handshake detection, and overvoltage detection, overcurrent detection, short circuit detection, active clamp detection in a power module.
In an alternative embodiment, the main control module controls the driving module to detect the fully-controlled device according to a preset fault detection sequence; the preset fault detection sequence is as follows: after the power supply detection and the communication detection are sequentially executed, the drive detection, the handshake detection, and the overvoltage detection, the overcurrent detection, the short circuit detection and the active clamp detection in the power module are simultaneously executed.
In a second aspect, the present invention provides a method for protecting the drive of a fully controlled device tandem valve, comprising: the main control module sends a driving signal to the light-in and light-out module, the light-in and light-out module sends the driving signal to the driving module as a multi-path synchronous serial valve driving signal, and the driving module processes the serial valve driving signal and sends the serial valve driving signal to a corresponding full-control device; the driving module performs various fault detection on the fully-controlled device, the main control module receives fault information detected by the driving module through the light-in and light-out unit, processes and latches the fault information, and issues a locking signal to the driving module, and the driving module controls the fully-controlled device to lock.
In an alternative embodiment, when a single or a plurality of fully controlled devices in the series valve fail, the master control module issues blocking signals to all the driving modules to block the series valve integrally.
In an alternative embodiment, the main control module controls the driving module to detect the fully controlled device according to a preset fault detection sequence, then performs fault detection and identification through the fault detection part, and when the serial valve fails, the main control module controls the unlocking operation of the serial valve.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a block diagram of a drive protection system according to an embodiment of the present invention;
FIG. 2 is a block diagram of a fault detection portion according to an embodiment of the present invention;
FIG. 3 is a fault protection set timing diagram according to an embodiment of the present invention;
fig. 4 is a circuit configuration diagram of a driving section according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, or can be communicated inside the two components, or can be connected wirelessly or in a wired way. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
According to an embodiment of the present invention, there is provided a drive protection system of a fully-controlled device serial valve, as shown in fig. 1, the serial valve is formed by connecting a plurality of fully-controlled devices in series, the drive protection system includes: the system comprises a main control module, a plurality of light input and light output modules and a plurality of driving modules.
As shown in fig. 1, a fully-controlled device of each serial valve is connected with a driving module to form a valve string unit, and the driving module of each valve string unit is connected with a main control module through an optical input optical output unit; the light-in and light-out module is connected with other light-in and light-out modules.
Specifically, in fig. 1, the modules are connected through duplex communication links, and the light in and light out modules are connected through duplex communication links. The light-in and light-out modules consist of a light-in and light-out module #1 to a light-in and light-out module #N. The driving modules consist of driving module #1 to driving module #n. N is a natural number, and N is more than or equal to 2. The drive module and the power module together form a valve string unit.
Specifically, the main control module is used for sending a driving signal to the light-in and light-out module, the light-in and light-out module is used for sending the driving signal to the driving module as a multi-channel synchronous serial valve driving signal, and the driving module is used for processing the serial valve driving signal and then sending the processed serial valve driving signal to a corresponding full-control device.
Specifically, the driving module is used for detecting various types of faults of the fully-controlled device in real time; the fault detection types include: power supply detection, communication detection, drive detection, handshake detection, and overvoltage detection, overcurrent detection, short circuit detection, active clamp detection in power modules, to name but a few.
In particular, the various fault detection circuits involved in the drive module may include voltage sampling circuits, current sampling circuits, and the like.
Specifically, the main control module receives fault information detected by the driving module through the light-in light-out unit, and the main control module is used for processing and latching the fault information and sending a locking signal to the driving module.
Specifically, the main control module is internally provided with an alarm threshold value and a fault threshold value. The alarm signal comprises: and (5) an overvoltage alarm and an overcurrent alarm. When the voltage or the current is higher than the alarm threshold value and lower than the fault threshold value, the main control module judges that the voltage or the current is an alarm signal; when the voltage or current is above the fault threshold, a fault signal is determined.
In some alternative embodiments, as shown in fig. 1, the main control module includes: the system comprises a main control system part and a fault protection set processing part, wherein the main control system part is connected with the light-in and light-out module, and the main control part is used for sending a driving signal or a locking signal to the light-in and light-out module; the fault protection set processing part is connected with the light-in and light-out module and is used for receiving fault information detected by the driving module, processing and latching the fault information.
Specifically, the fault protection set processing part includes power fault protection, communication fault protection, driving fault protection, handshake fault protection, overvoltage protection, overcurrent protection, short circuit protection, and active clamp protection.
In some alternative embodiments, as shown in fig. 1, the light in-light out module includes: the system comprises a main control module, a sending part and a receiving part, wherein the main control module is used for controlling the operation states of the sending part and the receiving part; the transmitting part is connected with the driving module and is used for transmitting a serial valve driving signal or a locking signal to the driving module; the receiving part is connected with the driving module and is used for receiving fault information.
Specifically, the light-in and light-out module includes a first control section, a transmitting section, and a receiving section. The first control section includes signal synchronization control, off-delay control. The light-in and light-out modules comprise synchronous signal links.
In some alternative embodiments, as shown in fig. 1, the drive module includes: the second control part is connected with the light input and light output module, the driving part and the fault detection part and is used for controlling the operation states of the driving part and the fault detection part based on a serial valve driving signal or a locking signal; the driving part is connected with the full-control device and is used for transmitting a serial valve driving signal or a locking signal to the full-control device; the fault detection part is connected with the full-control device and is used for detecting various types of faults of the full-control device in real time.
Specifically, the fault detection part detects and reports various faults in the valve string unit through power supply detection, communication detection, driving detection, handshake detection in the driving module, overvoltage detection, overcurrent detection, short circuit detection and active clamp detection in the power module, as shown in fig. 2.
Specifically, the fault detection timing is: power failure > communication failure > drive failure = handshake failure = overvoltage failure = overcurrent failure = short circuit failure = active clamp failure. The system starts fault resetting treatment, fault detection and identification are carried out through a fault detection part, and when no fault occurs, the series valve can be unlocked to operate; when a fault occurs, the system reports the fault signal, the main control module processes and issues the integral locking, and the fault signal can be cleared through the next fault reset, as shown in fig. 3.
Specifically, when the main control module issues a driving signal: the driving signal is processed by the light-in and light-out module, and is transmitted to the driving module through the optical fiber communication link, and the driving module amplifies the power of the driving signal and drives the full-control device.
Specifically, when the drive module detects a fault signal: the fault signal is reported through the driving module, is transmitted to the light-in and light-out module through the optical fiber communication link, is summarized through the light-in and light-out module, and is transmitted to the fault protection set processing part for fault processing and fault latching. Meanwhile, the main control module transmits an integral locking signal to the driving module, and then the integral locking of the full-control device in the valve string unit is completed.
In some alternative embodiments, the driving part includes: and a power amplifying circuit. As shown in fig. 4, the power amplifying circuit includes: the first resistor Ron, the second resistor Rin, the third resistor Roff, the fourth resistor RL, the capacitor CL, the first switch Q1 and the second switch Q2, wherein a first voltage is input to a first end of the first switch, a second end of the first switch is connected with the first end of the first resistor, a control end of the first switch is connected with the second control part through the second resistor, and the control end of the first switch is also connected with the control end of the second switch; the first end of the second switch is connected with the first end of the third resistor, and the second end of the second switch inputs a second voltage; the second end of the first resistor and the second end of the second resistor are connected with the first end of the capacitor and the first end of the fourth resistor; the second end of the capacitor and the second end of the fourth resistor are grounded; the second end of the fourth resistor is connected with the control end of the full-control device.
Specifically, as shown in fig. 4, VCC and VEE are driving positive and negative power supplies, rin is a push-pull input resistor, Q1 and Q2 constitute a push-pull power amplifying circuit, ron is an on resistor, roff is an off resistor, and CL and RL are driving load capacitance and load resistance, respectively.
The embodiment provides a driving protection method of a fully-controlled device serial valve, which comprises the following steps:
the main control module sends a driving signal to the light-in and light-out module, the light-in and light-out module sends the driving signal to the driving module as a multi-path synchronous serial valve driving signal, and the driving module processes the serial valve driving signal and sends the serial valve driving signal to a corresponding full-control device;
the driving module performs various fault detection on the fully-controlled device, the main control module receives fault information detected by the driving module through the light-in and light-out unit, processes and latches the fault information, and issues a locking signal to the driving module, and the driving module controls the fully-controlled device to lock.
In some alternative embodiments, when a single or a plurality of fully controlled devices in the series valve fail, the master control module issues blocking signals to all the drive modules to block the series valve as a whole.
In some alternative embodiments, the main control module controls the driving module to detect the fully controlled device according to a preset fault detection sequence, then performs fault detection and identification through the fault detection part, and when the serial valve fails, the main control module controls the unlocking operation of the serial valve.
Although embodiments of the present invention have been described in connection with the accompanying drawings, various modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope of the invention as defined by the appended claims.
Claims (11)
1. A drive protection system for a fully controlled device series valve, the series valve being formed by connecting a plurality of fully controlled devices in series, the drive protection system comprising: the device comprises a main control module, a plurality of light-in and light-out modules and a plurality of driving modules, wherein,
a full-control device of each series valve is connected with a driving module to form a valve string unit, and the driving module of each valve string unit is connected with the main control module through one light input and light output unit; the light-in and light-out module is connected with other light-in and light-out modules;
the main control module is used for sending a driving signal to the light-in and light-out module, the light-in and light-out module is used for sending the driving signal to the driving module as a multi-path synchronous serial valve driving signal, and the driving module is used for processing the serial valve driving signal and then sending the processed serial valve driving signal to a corresponding full-control device;
the driving module is also used for detecting various types of faults of the fully-controlled device;
the main control module is also used for receiving the fault information detected by the driving module through the light-in light-out unit, processing and latching the fault information and sending a locking signal to the driving module.
2. The drive protection system of a fully controlled device tandem valve of claim 1, wherein the master control module comprises: a main control system part and a fault protection set processing part, wherein,
the main control system part is connected with the light-in and light-out module and is used for sending a driving signal or a locking signal to the light-in and light-out module;
the fault protection set processing part is connected with the light-in and light-out module and is used for receiving fault information detected by the driving module, processing and latching the fault information.
3. The drive protection system of a fully controlled device tandem valve according to claim 1, wherein the light in-light out module comprises: a first control part, a transmitting part and a receiving part, wherein,
the first control part is connected with the main control module, the sending part and the receiving part and is used for controlling the running states of the sending part and the receiving part;
the transmitting part is connected with the driving module and is used for transmitting a serial valve driving signal or a locking signal to the driving module;
the receiving part is connected with the driving module and is used for receiving the fault information.
4. The drive protection system of a fully controlled device tandem valve of claim 1, wherein said drive module comprises: a second control section, a driving section, and a failure detection section, wherein,
the second control part is connected with the light input/output module, the driving part and the fault detection part and is used for controlling the operation states of the driving part and the fault detection part based on a serial valve driving signal or a locking signal;
the driving part is connected with the full-control device and is used for driving a serial valve or locking the valve to the full-control device;
the fault detection part is connected with the full-control type device and is used for detecting various types of faults of the full-control type device in real time.
5. The drive protection system of a fully controlled device tandem valve according to claim 4, wherein the driving section includes: and a power amplifying circuit.
6. The drive protection system of a fully controlled device serial valve according to claim 5, wherein the power amplifying circuit comprises: a first resistor, a second resistor, a third resistor, a fourth resistor, a capacitor, a first switch and a second switch, wherein,
a first end of the first switch inputs a first voltage, a second end of the first switch is connected with a first end of the first resistor, a control end of the first switch is connected with the second control part through the second resistor, and a control end of the first switch is also connected with a control end of the second switch;
the first end of the second switch is connected with the first end of the third resistor, and the second end of the second switch inputs a second voltage;
the second end of the first resistor and the second end of the second resistor are connected with the first end of the capacitor and the first end of the fourth resistor;
the second end of the capacitor and the second end of the fourth resistor are grounded;
and the second end of the fourth resistor is connected with the control end of the full-control device.
7. The drive protection system of a fully controlled device tandem valve according to any one of claims 1 or 4, wherein the fault detection type includes: power supply detection, communication detection, drive detection, handshake detection, and overvoltage detection, overcurrent detection, short circuit detection, active clamp detection in a power module.
8. The drive protection system of a fully controlled device tandem valve of claim 7,
the main control module controls the driving module to detect the fully-controlled device according to a preset fault detection sequence;
the preset fault detection sequence is as follows: after the power supply detection and the communication detection are sequentially executed, the drive detection, the handshake detection, and the overvoltage detection, the overcurrent detection, the short circuit detection and the active clamp detection in the power module are simultaneously executed.
9. The driving protection method of the fully-controlled device serial valve is characterized by comprising the following steps of:
the main control module sends a driving signal to the light-in and light-out module, the light-in and light-out module sends the driving signal to the driving module as a multi-path synchronous serial valve driving signal, and the driving module processes the serial valve driving signal and sends the serial valve driving signal to a corresponding full-control device;
the driving module performs multiple types of fault detection on the fully-controlled device, the main control module receives fault information detected by the driving module through the light-in and light-out unit, processes and latches the fault information, and issues a locking signal to the driving module, and the driving module controls the fully-controlled device to be locked.
10. The drive protection method of a fully controlled device tandem valve according to claim 9, further comprising:
when single or multiple full-control devices in the series valve fail, the main control module sends out blocking signals to all the driving modules to block the series valve integrally.
11. The drive protection method of a fully controlled device tandem valve according to claim 9, further comprising:
the main control module controls the driving module to detect the fully-controlled device according to a preset fault detection sequence, then performs fault detection and identification through the fault detection part, and controls the unlocking operation of the serial valve when the serial valve does not have faults.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311433269.4A CN117498280A (en) | 2023-10-31 | 2023-10-31 | Driving protection system and method for fully-controlled device series valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311433269.4A CN117498280A (en) | 2023-10-31 | 2023-10-31 | Driving protection system and method for fully-controlled device series valve |
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| CN117498280A true CN117498280A (en) | 2024-02-02 |
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| CN202311433269.4A Pending CN117498280A (en) | 2023-10-31 | 2023-10-31 | Driving protection system and method for fully-controlled device series valve |
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| CN (1) | CN117498280A (en) |
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2023
- 2023-10-31 CN CN202311433269.4A patent/CN117498280A/en active Pending
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