CN114077211A - Neutral section passing device, valve control system thereof, valve control redundancy control system and valve bank control method - Google Patents

Neutral section passing device, valve control system thereof, valve control redundancy control system and valve bank control method Download PDF

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Publication number
CN114077211A
CN114077211A CN202010837480.2A CN202010837480A CN114077211A CN 114077211 A CN114077211 A CN 114077211A CN 202010837480 A CN202010837480 A CN 202010837480A CN 114077211 A CN114077211 A CN 114077211A
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China
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signal
valve
valve control
control unit
pulse
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CN114077211B (en
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陶洪亮
刘正雄
郭积晶
刘永丽
谷涛
张典
陈洁莲
仇乐兵
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Zhuzhou CRRC Times Electric Co Ltd
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Zhuzhou CRRC Times Electric Co Ltd
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
    • G05B19/0423—Input/output
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
    • B60M3/00—Feeding power to supply lines in contact with collector on vehicles; Arrangements for consuming regenerative power
    • B60M3/04—Arrangements for cutting in and out of individual track sections
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/20—Pc systems
    • G05B2219/25—Pc structure of the system
    • G05B2219/25257—Microcontroller

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Safety Devices In Control Systems (AREA)

Abstract

The application relates to a phase passing split device, a valve control system, a valve control redundancy control system and a valve bank control method thereof. In the valve control system, a first valve control unit generates a first pulse signal according to a received control instruction and outputs the first pulse signal to a pulse synthesis unit through a corresponding pulse distribution unit so as to realize the control function of a valve group in a phase passing device, and meanwhile, the first valve control unit sends a synchronous signal to a second valve control unit; and after the second valve control unit generates a second pulse signal according to the control instruction, if the second valve control unit does not receive the synchronous signal or the synchronous signal is abnormal, the second pulse signal is output to the pulse synthesis unit, and the first valve control unit is informed to block the output of the first pulse signal so as to take over the control function of the valve group in the phase splitting device. Therefore, when the first valve bank unit fails, the valve bank can still be controlled by switching to the second valve bank unit, so that on-off control of the valve bank can be realized, and the reliability of the phase splitting device is improved.

Description

Neutral section passing device, valve control system thereof, valve control redundancy control system and valve bank control method
Technical Field
The invention relates to the technical field of automatic control, in particular to a phase passing split device, a valve control system, a valve control redundancy control system and a valve bank control method thereof.
Background
In order to avoid negative sequence current generated in a power grid by single-phase power supply, the traction power supply system of the electrified railway in China currently adopts a phase-change alternate power supply mode; however, in order to prevent short circuit between phases, a phase passing device is generally installed at intervals of 20-30 km.
In the phase passing device, the valve control system controls the conduction of the corresponding electronic switch according to the position of the train and the running direction of the train, so that the train can pass through the central area in an electrified way and the stable passing of the power supply current of the train can be completed. However, if the passing neutral section device fails, there is a potential risk that the train may be damaged, and particularly, the heavy-duty train may have a serious influence on the operation of the train due to the failure to pass through the central area.
In practical application, the control system is the core of the passing phase separation device, and is the weakest link in the passing phase separation device, and whether the control system can work normally is closely related to the reliability of the passing phase separation device.
Disclosure of Invention
In view of the above, the present invention provides a phase passing device, a valve control system thereof, a valve control redundancy control system and a valve bank control method thereof, so as to improve the reliability of the phase passing device.
In order to achieve the above purpose, the embodiments of the present invention provide the following technical solutions:
a first aspect of the present application provides a valve control system for a phase-split device, comprising: the device comprises a first valve control unit, a second valve control unit, a pulse synthesis unit, a return unit and two pulse distribution units; wherein:
the first valve control unit and the second valve control unit both receive control instructions issued by a logic control system in the phase-passing split device;
the first valve control unit is used for generating a first pulse signal according to the control instruction, outputting the first pulse signal to the pulse synthesis unit through the corresponding pulse distribution unit, and simultaneously generating a synchronous signal and outputting the synchronous signal to the second valve control unit;
the second valve control unit is used for generating a second pulse signal according to the control instruction; when the synchronous signal is not received or the synchronous signal is abnormal, the second pulse signal is output to the pulse synthesis unit, and the first valve control unit is informed to block the output of the first pulse signal;
the output end of the pulse synthesis unit is connected with the control end of a valve bank in the phase passing device;
the reporting unit is used for returning the reporting signal of the valve group to the first valve control unit and the second valve control unit.
Optionally, the second valve control unit is further configured to: and when the synchronous signal is received and is normal, synchronously comparing the second pulse signal with the synchronous signal, and if the comparison result is consistent, outputting the second pulse signal to the pulse synthesis unit.
Optionally, the second valve control unit outputs a synchronous feedback signal and a vital signal of the second valve control unit to the first valve control unit, and the synchronous feedback signal and the vital signal serve as a basis for determining whether the first valve control unit needs to block the output of the first pulse signal.
Optionally, the synchronous feedback signal is a signal indicating whether the first valve control unit has a fault, and when the second valve control unit does not receive the synchronous signal or the synchronous signal is abnormal, the synchronous feedback signal is set as a signal indicating that the first valve control unit has a fault;
and when the second valve control unit receives the synchronous signal and the synchronous signal is normal, setting the synchronous feedback signal as a signal representing that the first valve control unit is not in fault.
Optionally, the synchronization signal is a clock signal.
Optionally, the basis for determining the abnormality of the synchronization signal specifically includes: the synchronous signal is unchanged within a first preset time.
Optionally, the first valve control unit includes: the device comprises a first operation module and a first control module; wherein:
the first operation module is used for receiving a working instruction sent by the first control module and sending an initial pulse signal, a pulse enable signal, a life signal and a reset signal to the first control module;
the first control module is used for receiving the control instruction and the detection signal and generating the working instruction; generating and outputting the first pulse signal to the corresponding pulse distribution unit according to the initial pulse signal, and receiving a pulse return signal corresponding to the pulse distribution unit; and outputting the synchronous signal and receiving the synchronous feedback signal and the vital signal sent by the second valve control unit.
Optionally, the second valve control unit includes: the second operation module and the second control module; wherein:
the second operation module is used for receiving a working instruction sent by the second control module and sending an initial pulse signal, a pulse enable signal, a life signal and a reset signal to the second control module;
the second control module is used for receiving the control instruction and the detection signal and generating the working instruction; generating and outputting the second pulse signal to the corresponding pulse distribution unit according to the initial pulse signal, and receiving a pulse return signal corresponding to the pulse distribution unit; and receiving and generating the synchronous feedback signal according to the synchronous signal, and outputting the synchronous feedback signal and the vital signal per se.
Optionally, the first control module and the second control module are further configured to:
and generating and outputting an electronic switch conducting state signal in the valve group to the logic control system according to the corresponding pulse return signal.
Optionally, the first operation module and the second operation module are both Digital Signal Processors (DSPs), and the first control module and the second control module are both Complex Programmable Logic Devices (CPLDs).
A second aspect of the present application provides a valve group control method for a phase-splitting device, which is applied to a valve control system of any one of the phase-splitting devices described in the first aspect of the present application, and the valve group control method includes:
a first valve control unit in the valve control system executes a control function on a valve group in the phase passing device and sends a synchronous signal to a second valve control unit in the valve control system;
the second valve control unit judges whether the synchronous signal is received or not or whether the synchronous signal is abnormal or not;
and if the second valve control unit does not receive the synchronous signal or the synchronous signal is abnormal, the second valve control unit takes over the control function of the first valve control unit on the valve group and informs the first valve control unit to block the control function of the first valve control unit on the valve group.
Optionally, when the first valve control unit includes a first operation module and a first control module, before the step of executing a control function on a valve group in the phase passing device by the first valve control unit in the valve control system and sending a synchronization signal to a second valve control unit in the valve control system, the method further includes:
the first control module starts to operate, generates a working instruction according to the received control instruction and the detection signal and sends the working instruction to the first operation module;
the first operation module starts to operate, sends a pulse enabling signal and a life signal to the first control module, generates an initial pulse signal according to the working instruction and sends the initial pulse signal to the first control module;
the first control module generates the first pulse signal according to the initial pulse signal.
Optionally, when the second valve control unit includes a second operation module and a second control module, before the step of determining whether the synchronization signal is received or not or whether the synchronization signal is abnormal by the second valve control unit, the method further includes:
the second control module starts to operate, generates a working instruction according to the received control instruction and the detection signal and sends the working instruction to the second operation module;
the second operation module starts to operate, sends a pulse enabling signal and a life signal to the second control module, generates an initial pulse signal according to the working instruction and sends the initial pulse signal to the second control module;
the second control module generates the second pulse signal according to the initial pulse signal.
Optionally, the step of judging whether the synchronization signal is abnormal by the second valve control unit includes:
the second control module judges whether the synchronous signal is unchanged within a first preset time;
and if the synchronous signal is not changed within the first preset time, judging that the synchronous signal is abnormal.
Optionally, after the step of determining whether the synchronization signal is received or not or whether the synchronization signal is abnormal or not by the second valve control unit, the method further includes:
if the synchronous signal is normal, the second control module synchronously compares the synchronous signal with the second pulse signal;
if the comparison result is consistent, the second control module outputs the second pulse signal;
and a pulse synthesis unit in the valve control system synthesizes the first pulse signal and the second pulse signal output by the two pulse distribution units and outputs the synthesized signals to a control end of the valve bank.
A third aspect of the present application provides a redundant control system for valve control of a phase-splitting device, comprising a logic control system and a valve control system according to any of the first aspects of the present application;
and the logic control system is connected with the valve control system through a hard wire.
Optionally, the logic control system includes: two logic control units; the input ends of the two logic control units are connected in parallel, and the output ends of the two logic control units are connected in parallel.
A fourth aspect of the present application provides a phase-passing dividing apparatus comprising: a main circuit, a train position sensor, a lightning protection device, an axle counting sensor and a valve control redundancy control system according to any one of the third aspect of the application;
the train position sensor is used for sending detection information output by the train position sensor to a logic control system in the valve control redundant control system sequentially through the lightning protection device and the axle counting sensor, so that the logic control system controls the valve group in the main circuit to act through the valve control system in the valve control redundant control system.
Optionally, the main circuit is: any one of an electronic switch redundancy-free topology, an electronic switch single set redundancy topology, and an electronic switch set redundancy topology.
Optionally, the valve control system in the valve control redundancy control system is arranged in an electronic switch control cabinet, and the logic control system is arranged in a logic control cabinet; the axle counting sensor is arranged in the axle counting cabinet, and the lightning protection device is arranged in the lightning protection cabinet.
According to the technical scheme, the invention provides a valve control system of a phase separation device, which specifically comprises the following components: the device comprises a first valve control unit, a second valve control unit, a pulse synthesis unit, a return unit and two pulse distribution units. The first valve control unit generates a first pulse signal according to a received control instruction issued by the logic control system and outputs the first pulse signal to the pulse synthesis unit through the corresponding pulse distribution unit so as to realize the control function of the valve group in the phase passing device, and meanwhile, the first valve control unit sends a synchronization signal to the second valve control unit; and after the second valve control unit generates a second pulse signal according to the control instruction, if the second valve control unit does not receive the synchronous signal or the synchronous signal is abnormal, the second pulse signal is output to the pulse synthesis unit, and the first valve control unit is informed to block the output of the first pulse signal so as to take over the control function of the valve group in the phase splitting device. Therefore, when the first valve bank unit fails, the valve bank can still be controlled by switching to the second valve bank unit, so that on-off control of the valve bank can be realized, and the reliability of the phase splitting device is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 and 2 are schematic diagrams of two structures of a valve control system of a phase separation device provided by an embodiment of the application;
FIG. 3 is a schematic diagram of signal synchronization comparison;
4-7 are four flow charts illustrating a valve group control method of the phase-splitting device according to the embodiment of the present application;
8-10 are schematic diagrams of three structures of a valve control redundancy control system of a phase separation device provided by the embodiment of the application;
FIG. 11 is a schematic structural diagram of a phase-splitting device according to an embodiment of the present disclosure;
fig. 12-14 are schematic structural diagrams of three implementations of a main circuit of a phase-splitting device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In this application, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
In order to improve the reliability of the phase-splitting device, an embodiment of the present application provides a valve control system of the phase-splitting device, whose specific structure is shown in fig. 1, and includes: a first valve control unit 40, a second valve control unit 50, a pulse synthesizing unit 10, a reporting unit 20, and two pulse distribution units 30.
In the valve control system, the first valve control unit 40 and the second valve control unit 50 both receive a control instruction sent by a logic control system in a phase splitter, and the first valve control unit 40 and the second valve control unit 50 are in communication connection; the first valve control unit 40 and the second valve control unit 50 are respectively connected with the input end of the pulse synthesis unit 10 through the corresponding pulse distribution unit 30; the output end of the pulse synthesis unit 10 is used as the output end of the valve control system and is connected with the control end of the valve group in the phase separation device.
It should be noted that the communication connection between the first valve control unit 40 and the second valve control unit 50, the connection between the first valve control unit 40 and the corresponding pulse distribution unit 30, and the connection between the second valve control unit 50 and the corresponding pulse distribution unit 30 can be realized by optical fibers, and currently, in practical applications, including but not limited to the above materials, there is no specific limitation here, and it is within the scope of the present application as the case may be.
During the operation of the valve control system, the first valve control unit 40 generates a first pulse signal according to the received control command, outputs the first pulse signal to the pulse synthesizing unit 10 through the corresponding pulse distribution unit 30, and outputs the first pulse signal to the control end of the valve block in the phase separation device through the pulse synthesizing unit 10 to control the conduction or the closing of the electronic switch in the valve block, and simultaneously generates a synchronization signal and outputs the synchronization signal to the second valve control unit 50.
After the second valve control unit 50 generates the second pulse signal according to the received control instruction, if the second valve control unit does not receive the synchronization signal or the received synchronization signal is abnormal, the second pulse signal is output to the pulse synthesizing unit 10 through the corresponding pulse distribution unit 30, and then output to the control end of the valve block in the phase splitting device through the pulse synthesizing unit 10 to control the conduction of the electronic switch in the valve block, and the first valve control unit 40 is notified to block the output of the first pulse signal, so that the first valve control unit 40 is taken over to control the on-off of the electronic switch in the valve block in the phase splitting device.
Specifically, when the second valve control unit 50 does not receive a synchronization signal or the received synchronization signal is abnormal, the second valve control unit 50 takes over the control of the first valve control unit 40 on/off of the electronic switches in the valve block of the phase splitting device within a second preset time; for example, the second preset time may be 100us, but may also be other values in practical applications, which are not specifically limited herein and may be selected according to specific situations.
Wherein, the synchronization signal is a clock signal, which can represent the operation timing sequence in the first valve control unit 40; therefore, the judgment criteria of the abnormal synchronization signal are specifically as follows: the synchronization signal does not change within the first preset time, for example, 100us, but may be other values in practical applications, which is not specifically limited herein and may be selected according to specific situations.
In addition, in the valve control system, the valve blocks in the phase passing device are respectively connected with the first valve control unit 40 and the second valve control unit 50 through the reporting distribution unit, and the on-off state of the electronic switches in the valve blocks in the phase passing device can be fed back to the first valve control unit 40 and the second valve control unit 50 through the reporting distribution unit in a reporting signal mode.
Specifically, as shown in fig. 1, the second valve control unit 50 notifies the first valve control unit 40 of the following embodiments: the first control second valve control unit 50 outputs a synchronous feedback signal and a vital signal of the second valve control unit 50 itself to the first valve control unit 40.
It should be noted that the synchronous feedback signal is a signal indicating whether the first valve control unit 40 has a fault, and therefore, when the second valve control unit 50 does not receive the synchronous signal or the received synchronous signal is abnormal, the synchronous feedback signal output by the second valve control unit 50 is a signal indicating that the first valve control unit 40 has a fault, for example, it may be a low level signal; when the second valve control unit 50 receives the synchronization signal and the synchronization signal is normal, the second valve control unit 50 outputs a synchronization feedback signal as a signal indicating that the first valve control unit 40 is not faulty, for example, the synchronization feedback signal may be a high level signal; the vital signal of the second valve control unit 50 is a signal representing the working state of the second valve control unit, for example, when the first valve control unit 40 detects that the vital signal of the second valve control unit 50 is unchanged within 10ms, it can be determined that the second valve control unit 50 has a fault; in addition, only when the synchronous feedback signal received by the first valve control unit 40 indicates that the first valve control unit is in fault and the received life signal of the second valve control unit 50 indicates that the second valve control unit 50 is normal, the first valve control unit 40 will block the output of the first pulse signal.
In summary, the first valve control unit 40 generates a first pulse signal according to the received control instruction, and outputs the first pulse signal to the pulse synthesis unit 10 through the corresponding pulse distribution unit 30, so as to implement the control function of the valve group in the phase-split device, and meanwhile, the first valve control unit 40 sends a synchronization signal to the second valve control unit 50; after the second valve control unit 50 generates the second pulse signal according to the control command, if it does not receive the synchronization signal or the synchronization signal is abnormal, the second pulse signal is output to the pulse synthesizing unit 10, and the first valve control unit 40 is notified to block the output of the first pulse signal, so as to take over the control function of the valve block in the phase splitting device. Therefore, when the first valve bank unit fails, the valve bank can still be controlled by switching to the second valve bank unit, so that on-off control of the valve bank can be realized, and the reliability of the phase splitting device is improved.
In addition to the above functions, the valve control system of the phase-splitting device according to the present embodiment further includes a second valve control unit 50 inside the phase-splitting device for:
when the synchronous signal is received by the phase-splitting device, the second pulse signal and the synchronous signal are synchronously compared when the synchronous signal is normal, if the comparison result is consistent, that is, the operation time sequences of the first valve control unit 40 and the second valve control unit 50 are the same, the second pulse signal can be output to the pulse synthesis unit 10, then the second pulse signal and the first pulse signal are synthesized by the pulse synthesis unit 10, and the synthesized signal is output to a control end of a valve bank in the phase-splitting device, so that the first valve bank unit and the second valve bank unit can jointly control the on-off of an electronic switch in the valve bank in the phase-splitting device.
It should be noted that, when the received synchronization signal is normal and matches the synchronization comparison result of the second pulse signal, the second valve control unit 50 outputs the second pulse signal to the pulse synthesizing unit 10, which is only one embodiment in practical application; in practical application, the second valve control unit 50 does not output the second pulse to the pulse synthesis unit 10, and does not affect the control function of the valve control system of the phase separation device on the valve group in the phase separation device; the two types of the optical fiber can be selected according to specific application conditions, and are not specifically limited herein and are within the protection scope of the present application.
The above embodiment describes the valve control system of the phase separation device at the system level, and the following embodiment describes the first valve control unit 40 and the second valve control unit 50 in detail from the device level.
As shown in fig. 2, the first valve control unit 40 in the valve control system specifically includes: a first arithmetic block 41 and a first control block 42.
In the first valve control unit 40, a first control module 42 receives a detection signal and a control instruction issued by a logic control system in the phase splitting device; the first control module 42 is connected to the first arithmetic module 41, the second valve control unit 50, and the corresponding pulse distribution unit 30.
Specifically, in the working process of the first valve control unit 40, the first control module 42 generates and outputs a working instruction to the first operation module 41 according to the control instruction and the detection signal; the first operation module 41 outputs a vital signal, a pulse enable signal and a reset signal to the first control module 42, and the first operation module 41 outputs an initial pulse signal to the first control module 42 according to the received work instruction.
Then, the first control module 42 generates a first pulse signal according to the initial pulse signal, and outputs the first pulse signal to the pulse synthesizing unit 10 through the corresponding pulse distributing unit 30, so as to realize on-off control of an electronic switch in a valve block in the phase splitting device through the pulse synthesizing unit 10; and the first control module 42 also receives the pulse feedback signal returned by the corresponding pulse distribution unit 30, and outputs the synchronous signal to the second valve control unit 50 and receives the synchronous feedback signal fed back by the second valve control unit 50 and the vital signal of the second control module through the communication connection with the second valve control unit 50.
As shown in fig. 2, the structure of the second valve control unit 50 in the valve control system specifically includes: a second arithmetic module 51 and a second control module 52.
In the second valve control unit 50, a second control module 52 receives the detection signal and a control instruction sent by a logic control system in the phase splitting device; the second control module 52 is connected to the first arithmetic module 41, the first valve control unit 40, and the corresponding pulse distribution unit 30.
Specifically, during the operation of the second valve control unit 50, the second control module 52 generates and outputs an operation instruction to the second operation module 51 according to the control instruction and the detection signal; the second operation module 51 outputs the vital signal, the pulse enable signal and the reset signal to the second control module 52, and the second operation module 51 outputs the initial pulse signal to the second control module 52 according to the received work instruction.
Then, the second control module 52 generates a second pulse signal according to the initial pulse signal; the pulse feedback signals are output to the pulse distribution unit 30 through the corresponding pulse distribution unit 30, and the pulse feedback signals returned by the corresponding pulse distribution unit 30 are received; when the received synchronous signal is normal, the second control module 52 synchronously compares the synchronous signal with the second pulse signal, and if the comparison result is consistent, the second control module 52 also outputs the second pulse signal to the pulse synthesis unit 10, so as to realize the common control of the first valve control unit 40 and the second valve control unit 50 on the valve banks in the phase splitting device; if the comparison result is not consistent, the second control module 52 does not output the second pulse signal to the pulse synthesizing unit 10, and the first valve control unit 40 independently controls the valve banks in the phase splitting device; when the synchronization signal is not received or the received synchronization signal is abnormal, the second control module 52 outputs the second pulse signal to the pulse synthesis unit 10 through the pulse distribution unit 30, so that the pulse synthesis unit 10 controls the on/off of the electronic switch in the valve block in the phase passing device, generates the synchronization feedback signal according to the synchronization signal, and outputs the synchronization feedback signal and the self life signal to notify the first valve control unit 40 to block the output of the first pulse signal, thereby realizing that the second valve control unit 50 takes over the control function of the first valve control unit 40 on the valve block in the phase passing device.
Specifically, as shown in fig. 3, after the second control module 52 receives the pulse enable signal and the initial pulse signal sent by the second operation module 51, when a rising edge of the synchronization signal occurs, the initial pulse signal starts to be modulated, and then the rising edge of each synchronization signal is synchronized, and the synchronized pulse signal is used as a comparison result of synchronization comparison.
In addition, in the first and second valving units 40, 50, the first and second control modules 42, 52 are further configured to: and generating and outputting an electronic switch conducting state signal in the valve group to a logic control system according to the pulse return signal.
Optionally, the first operation module 41 and the second operation module 51 are both DSPs (Digital Signal processors), and the first control module 42 and the second control module 52 are both CPLDs (Complex Programmable Logic devices), and in practical applications, including but not limited to the above embodiments, all are within the protection scope of the present application, and can be selected according to specific situations, and here is not specifically limited to this embodiment
In view of the valve control system of the phase-splitting device provided in the foregoing embodiment, another embodiment of the present application provides a valve set control method of the phase-splitting device, a specific flow of which is shown in fig. 4, and includes the following steps:
and S110, the first valve control unit in the valve control system executes the control function of the valve group in the phase splitting device and sends a synchronous signal to the second valve control unit in the valve control system.
It should be noted that, the specific process of the first valve control unit executing the control function of the valve group in the phase-splitting device has been described in detail in the foregoing embodiments, and reference may be made to the foregoing embodiments, which are not repeated herein.
S120, the second valve control unit judges whether the synchronous signal is received or not or whether the synchronous signal is abnormal or not.
If the second valve control unit does not receive the synchronization signal or the synchronization signal is abnormal, step S130 is executed.
S130, the second valve control unit takes over the control function of the first valve control unit to the valve group and informs the first valve control unit to block the control function of the first valve control unit to the valve group.
It should be noted that the second valve control unit takes over the control function of the first valve control unit to the valve group, and notifies the first valve control unit to block the control function of the first valve control unit to the valve group, which are described in detail in the above embodiments, and reference may be made to the above embodiments, and details are not repeated here.
In practical applications, as shown in fig. 5, when the second valve control unit includes the second operation module and the second control module, on the basis of the valve bank control method of the neutral section passing apparatus, after step S120, if the synchronization signal is normal, the method further includes the following steps:
and S140, the second control module synchronously compares the synchronous signal with the second pulse signal.
If the comparison result is consistent, executing step S150; if the comparison result is not consistent, step S160 is executed.
It should be noted that, the process of the second control module performing the synchronous comparison on the synchronization signal and the second pulse signal is described in detail in the foregoing embodiments, and reference may be made to the foregoing embodiments, which are not repeated herein.
And S150, outputting the first pulse signal and the second pulse signal to a control end of the valve group through a pulse synthesis unit in the valve control system.
And S160, independently executing the control function of the valve group in the phase splitting device by the first valve control unit.
It should be noted that, in the valve bank control method of the neutral section passing device, when the first valve bank unit fails, the second valve bank unit can take over on-off control of the electronic switch in the valve bank in the neutral section passing device by the first valve bank unit, so that effective control of on-off of the valve bank is ensured, and control of the valve bank is more reliable.
Specifically, when the second valve control unit includes the second operation module and the second control module, in step S120, the method for the second valve control unit to determine whether the synchronization signal is abnormal specifically includes:
the second control module judges whether the synchronous signal is unchanged within a first preset time; if the synchronous signal is not changed within the first preset time, judging that the synchronous signal is abnormal; if the synchronous signal changes within the first preset time, the synchronous signal is judged to be normal.
It should be noted that the first preset time has been described in detail in the foregoing embodiments, and details are not repeated here.
In practical applications, as shown in fig. 6, when the first valve control unit includes the first operation module and the first control module, on the basis of the valve bank control method for the neutral section passing apparatus, before step S110, the method further includes the following steps:
s210, the first control module starts to operate, generates a working instruction according to the received control instruction and the detection signal and sends the working instruction to the first operation module.
And S220, starting the first operation module, sending a pulse enabling signal and a life signal to the first control module, generating an initial pulse signal according to the working instruction, and sending the initial pulse signal to the first control module.
And S230, the first control module generates a first pulse signal according to the initial pulse signal.
It should be noted that, the detailed description of the above steps has been mentioned in the above embodiments, and reference may be made to the above embodiments, which are not repeated herein.
In practical applications, as shown in fig. 7, when the second valve control unit includes the second operation module and the second control module, on the basis of the valve bank control method for the neutral section passing apparatus, before step S120, the method further includes the following steps:
before step S120, the method further includes:
and S310, the second control module starts to operate, generates a working instruction according to the received control instruction and the detection signal and sends the working instruction to the second operation module.
And S320, starting the second operation module, sending a pulse enabling signal and a life signal to the second control module, generating an initial pulse signal according to the working instruction, and sending the initial pulse signal to the second control module.
And S330, the second control module generates a second pulse signal according to the initial pulse signal.
It should be noted that, the detailed description of the above steps has been mentioned in the above embodiments, and reference may be made to the above embodiments, which are not repeated herein.
Another embodiment of the present application further provides another valve-controlled redundant control system of a neutral-section passing apparatus, the specific structure of which is shown in fig. 8, and the system includes: the logic control system 200 and the valve control system 100 of the phase-passing device provided by the embodiment are provided. In the valve-controlled redundant control system, the logic control system 200 is connected to the valve-controlled system 100 by a hard wire, and, as shown in fig. 8, the logic control system 200 can issue control commands to the first valve-controlled unit 40 and the second valve-controlled unit 50 in the valve-controlled system 100 of the phase-split device through the connection relationship, respectively and simultaneously; in addition, as shown in fig. 9, the first valve control unit 40 and the second valve control unit 50 can also feed back the on state of the electronic switches in the valve block to the logic control system 200 through the connection relationship.
Specifically, the logic control system 200 issues control commands to the first control module 42 of the first valve control unit 40 and the second control module 52 of the second valve control unit 50 respectively through the connection relationship, and correspondingly, the first control module 42 of the first valve control unit 40 and the second control module 52 of the second valve control unit 50 also feed back the on state of the electronic switches in the valve group to the logic control system 200 through the connection relationship.
Specifically, as shown in fig. 10, the logic control system 200 includes: two logic control units 210; the input ends of the two logic control units 210 are connected in parallel, and the output ends are connected in parallel.
It should be noted that, in view of the above embodiment, the valve control system 100 of the phase passing apparatus includes the first valve control unit 40 and the second valve control unit 50, and the logic control system 200 also includes the two logic control units 210, that is, a redundant design of dual logic control and dual valve control is adopted, so that when any one of the two circuits fails, the electronic switches in the valve set can also implement a phase change function, thereby improving the reliability of the valve control redundant control system of the phase passing apparatus; in addition, because the first valve control unit 40 and the second valve control unit 50 have independent power supplies, control signals and state feedback loops, when a fault occurs in the power supply or the control signals and the state feedback loop of any one valve control unit, the other valve control unit cannot be affected, and the reliability of the valve control redundancy control system of the phase passing device is further improved.
Another embodiment of the present invention further provides a phase-splitting apparatus, which has a structure as shown in fig. 11 (the pulse distribution unit 30, the pulse synthesis unit 10, and the reporting unit 20 are omitted in the figure), and includes: the train position sensor comprises a main circuit 01, train position sensors (such as J1 and J1 ', J2 and J2', J3 and J3 'and J4 and J4' in the figure 11), a lightning protection device 02, an axle counting sensor 03 and a valve control redundancy control system 04 provided by the embodiment.
In the phase passing device, a train position sensor is used for sending detection information output by the train position sensor to a logic control system 200 in a valve control redundancy control system 04 sequentially through a lightning protection device 02 and an axle counting sensor 03, so that the logic control system 200 controls valve group action in a main circuit 01 through a valve control system 100 in the valve control redundancy control system 04.
It should be noted that the valve control system 100 in the valve control redundancy control system 04 is arranged in the electronic switch control cabinet, and the logic control system 200 is arranged in the logic control cabinet; the axle counting sensor 03 is arranged in the axle counting cabinet, and the lightning protection device 02 is arranged in the lightning protection cabinet.
The passing phase splitting device comprises the valve control redundancy control system 04 provided by the embodiment, so that the passing phase splitting device has a valve control redundancy backup function and a logic control redundancy backup function, namely when any control circuit of the valve group electronic switches in the passing phase splitting device fails, the control of the valve control electronic switches can be ensured by switching the control circuit, and the reliability of the passing phase splitting device is improved.
It should be noted that the passing phase-splitting device provided in the above embodiment is mainly a technical solution for controlling redundancy, and in practical application, the main circuit 01 may be: any one of an electronic switch redundancy-less topology (as shown in fig. 12), an electronic switch single set redundancy topology (as shown in fig. 13), and an electronic switch set redundancy topology (as shown in fig. 14).
The main circuit 01 shown in fig. 13 is modified from that shown in fig. 12; the main differences between the two are: while the main circuit 01 shown in fig. 12 includes two electronic switches, i.e., a first electronic switch SCR _ V1 and a second electronic switch SCR _ V2, in the main circuit 01 shown in fig. 13, one more electronic switch, i.e., a third electronic switch SCR _ V3, is provided than in the main circuit 01 shown in fig. 12.
In the main circuit 01 shown in fig. 13, a third electronic switch SCR _ V3 is connected in parallel between the first electronic switch SCR _ V1 and the second electronic switch SCR _ V2 through switches, respectively; when the first electronic switch SCR _ V1 or the second electronic switch SCR _ V2 has a fault, the corresponding switch is turned on, so that the third electronic switch replaces the first electronic switch SCR _ V1 or the second electronic switch SCR _ V2 to continue working, and the first electronic switch SCR _ V1 or the second electronic switch SCR _ V2 is pulse-locked, so as to ensure the normal working of the main circuit 01 shown in fig. 13, thereby improving the reliability of the phase-splitting device.
The main circuit 01 shown in fig. 14 is also improved on the basis of that shown in fig. 12, and the main difference between the two is that: the main circuit 01 shown in fig. 12 includes two electronic switches, i.e., a first electronic switch SCR _ V1 and a second electronic switch SCR _ V2, while the main circuit 01 shown in fig. 14 has two more electronic switches than the main circuit 01 shown in fig. 12, i.e., a third electronic switch SCR _ V3 and a fourth electronic switch SCR _ V4, and the specific connection relationship thereof can refer to fig. 14, and the specific operation principle thereof is the same as that of the phase-splitting device shown in fig. 13, and is not repeated here.
The main circuit 01 shown in fig. 14 has two electronic switches provided redundantly, although the cost and the installation site requirement of the main circuit 01 shown in fig. 14 are double those of the main circuit 01 shown in fig. 14, which is not favorable for practical engineering application; however, the reliability of the main circuit 01 shown in fig. 14 is higher than that of the main circuit 01 shown in fig. 13.
It should be noted that, in practical applications, no matter whether the electronic switch redundancy backup is adopted or not, the scheme that the reliability of the phase separation apparatus is improved by adopting the valve control redundancy backup provided by the above embodiment is within the protection scope of the present application.
The embodiments of the invention are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments can be referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner. Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present teachings, or modify equivalent embodiments to equivalent variations, without departing from the scope of the present teachings, using the methods and techniques disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.

Claims (20)

1. A valve control system for a phase-splitting device, comprising: the device comprises a first valve control unit, a second valve control unit, a pulse synthesis unit, a return unit and two pulse distribution units; wherein:
the first valve control unit and the second valve control unit both receive control instructions issued by a logic control system in the phase-passing split device;
the first valve control unit is used for generating a first pulse signal according to the control instruction, outputting the first pulse signal to the pulse synthesis unit through the corresponding pulse distribution unit, and simultaneously generating a synchronous signal and outputting the synchronous signal to the second valve control unit;
the second valve control unit is used for generating a second pulse signal according to the control instruction; when the synchronous signal is not received or the synchronous signal is abnormal, the second pulse signal is output to the pulse synthesis unit, and the first valve control unit is informed to block the output of the first pulse signal;
the output end of the pulse synthesis unit is connected with the control end of a valve bank in the phase passing device;
the reporting unit is used for returning the reporting signal of the valve group to the first valve control unit and the second valve control unit.
2. The valve control system of the phase passing device of claim 1, wherein the second valve control unit is further configured to: and when the synchronous signal is received and is normal, synchronously comparing the second pulse signal with the synchronous signal, and if the comparison result is consistent, outputting the second pulse signal to the pulse synthesis unit.
3. The valve control system of the phase passing device of claim 1, wherein the second valve control unit outputs a synchronous feedback signal and a self life signal to the first valve control unit, and the synchronous feedback signal and the self life signal serve as a judgment basis for the first valve control unit to determine whether the first pulse signal output needs to be blocked.
4. The valve control system of the phase passing device according to claim 3, wherein the synchronous feedback signal is a signal indicating whether the first valve control unit is faulty, and when the second valve control unit does not receive the synchronous signal or the synchronous signal is abnormal, the synchronous feedback signal is set as a signal indicating that the first valve control unit is faulty;
and when the second valve control unit receives the synchronous signal and the synchronous signal is normal, setting the synchronous feedback signal as a signal representing that the first valve control unit is not in fault.
5. The valvetrain system of claim 1, wherein the synchronization signal is a clock signal.
6. The valve control system of the phase passing device according to claim 1, wherein the judgment basis of the abnormal synchronous signal is specifically as follows: the synchronous signal is unchanged within a first preset time.
7. The valve control system of the phase passing device according to any one of claims 1 to 6, wherein the first valve control unit comprises: the device comprises a first operation module and a first control module; wherein:
the first operation module is used for receiving a working instruction sent by the first control module and sending an initial pulse signal, a pulse enable signal, a life signal and a reset signal to the first control module;
the first control module is used for receiving the control instruction and the detection signal and generating the working instruction; generating and outputting the first pulse signal to the corresponding pulse distribution unit according to the initial pulse signal, and receiving a pulse return signal corresponding to the pulse distribution unit; and outputting the synchronous signal and receiving the synchronous feedback signal and the vital signal sent by the second valve control unit.
8. The valve control system of the phase passing device of claim 7, wherein the second valve control unit comprises: the second operation module and the second control module; wherein:
the second operation module is used for receiving a working instruction sent by the second control module and sending an initial pulse signal, a pulse enable signal, a life signal and a reset signal to the second control module;
the second control module is used for receiving the control instruction and the detection signal and generating the working instruction; generating and outputting the second pulse signal to the corresponding pulse distribution unit according to the initial pulse signal, and receiving a pulse return signal corresponding to the pulse distribution unit; and receiving and generating the synchronous feedback signal according to the synchronous signal, and outputting the synchronous feedback signal and the vital signal per se.
9. The valving system of the phase passing device of claim 8, wherein the first control module and the second control module are each further configured to:
and generating and outputting an electronic switch conducting state signal in the valve group to the logic control system according to the corresponding pulse return signal.
10. The valve control system of the phase passing device according to claim 9, wherein the first and second operation modules are both Digital Signal Processors (DSPs), and the first and second control modules are both Complex Programmable Logic Devices (CPLDs).
11. A valve group control method for a phase separation device, which is applied to a valve control system of the phase separation device according to any one of claims 1 to 10, the valve group control method comprising:
a first valve control unit in the valve control system executes a control function on a valve group in the phase passing device and sends a synchronous signal to a second valve control unit in the valve control system;
the second valve control unit judges whether the synchronous signal is received or not or whether the synchronous signal is abnormal or not;
and if the second valve control unit does not receive the synchronous signal or the synchronous signal is abnormal, the second valve control unit takes over the control function of the first valve control unit on the valve group and informs the first valve control unit to block the control function of the first valve control unit on the valve group.
12. The valve group control method of the phase passing device according to claim 11, wherein when the first valve control unit comprises the first operation module and the first control module, before the step of the first valve control unit in the valve control system performing the control function on the valve group in the phase passing device and sending the synchronization signal to the second valve control unit in the valve control system, the method further comprises:
the first control module starts to operate, generates a working instruction according to the received control instruction and the detection signal and sends the working instruction to the first operation module;
the first operation module starts to operate, sends a pulse enabling signal and a life signal to the first control module, generates an initial pulse signal according to the working instruction and sends the initial pulse signal to the first control module;
the first control module generates the first pulse signal according to the initial pulse signal.
13. The valve group control method of the phase passing device according to claim 12, wherein when the second valve control unit includes a second operation module and a second control module, before the step of the second valve control unit determining whether the synchronization signal is received or whether the synchronization signal is abnormal, the method further comprises:
the second control module starts to operate, generates a working instruction according to the received control instruction and the detection signal and sends the working instruction to the second operation module;
the second operation module starts to operate, sends a pulse enabling signal and a life signal to the second control module, generates an initial pulse signal according to the working instruction and sends the initial pulse signal to the second control module;
the second control module generates the second pulse signal according to the initial pulse signal.
14. The valve group control method of the phase passing device according to claim 13, wherein the step of the second valve control unit determining whether the synchronization signal is abnormal comprises:
the second control module judges whether the synchronous signal is unchanged within a first preset time;
and if the synchronous signal is not changed within the first preset time, judging that the synchronous signal is abnormal.
15. The valve group control method of the phase passing device according to claim 14, further comprising, after the step of the second valve control unit determining whether the synchronization signal is received or whether the synchronization signal is abnormal:
if the synchronous signal is normal, the second control module synchronously compares the synchronous signal with the second pulse signal;
if the comparison result is consistent, the second control module outputs the second pulse signal;
and a pulse synthesis unit in the valve control system synthesizes the first pulse signal and the second pulse signal output by the two pulse distribution units and outputs the synthesized signals to a control end of the valve bank.
16. A redundant control system for valvetrain control of a phase-splitting device, comprising a logic control system and a valvetrain control system according to any one of claims 1 to 10;
and the logic control system is connected with the valve control system through a hard wire.
17. The valve-controlled redundant control system of claim 16, wherein the logic system comprises: two logic control units; the input ends of the two logic control units are connected in parallel, and the output ends of the two logic control units are connected in parallel.
18. A phase passing apparatus, comprising: a main circuit, a train position sensor, a lightning protection device, an axle counting sensor and a valve-controlled redundant control system according to claim 16 or 17;
the train position sensor is used for sending detection information output by the train position sensor to a logic control system in the valve control redundant control system sequentially through the lightning protection device and the axle counting sensor, so that the logic control system controls the valve group in the main circuit to act through the valve control system in the valve control redundant control system.
19. The phase passing device of claim 18, wherein the main circuit is: any one of an electronic switch redundancy-free topology, an electronic switch single set redundancy topology, and an electronic switch set redundancy topology.
20. The passing phase separation device of claim 18 or 19, wherein the valve control system in the valve control redundancy control system is arranged in an electronic switch control cabinet, and the logic control system is arranged in a logic control cabinet; the axle counting sensor is arranged in the axle counting cabinet, and the lightning protection device is arranged in the lightning protection cabinet.
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107069938A (en) * 2017-04-28 2017-08-18 荣信汇科电气技术有限责任公司 One kind is used for flexible direct current transmission converter valve data redundancy control method
CN209046537U (en) * 2018-10-26 2019-06-28 南方电网科学研究院有限责任公司 Flexible direct current valve level controller with data chain redundancy configuration
CN110095974A (en) * 2018-01-31 2019-08-06 株洲中车时代电气股份有限公司 Split-phase dual redundant control method and control system are crossed in a kind of ground
JP2020021341A (en) * 2018-08-02 2020-02-06 三菱日立パワーシステムズ株式会社 Redundant system
CN210867495U (en) * 2019-12-04 2020-06-26 全球能源互联网研究院有限公司 Double-valve-base control system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107069938A (en) * 2017-04-28 2017-08-18 荣信汇科电气技术有限责任公司 One kind is used for flexible direct current transmission converter valve data redundancy control method
CN110095974A (en) * 2018-01-31 2019-08-06 株洲中车时代电气股份有限公司 Split-phase dual redundant control method and control system are crossed in a kind of ground
JP2020021341A (en) * 2018-08-02 2020-02-06 三菱日立パワーシステムズ株式会社 Redundant system
CN209046537U (en) * 2018-10-26 2019-06-28 南方电网科学研究院有限责任公司 Flexible direct current valve level controller with data chain redundancy configuration
CN210867495U (en) * 2019-12-04 2020-06-26 全球能源互联网研究院有限公司 Double-valve-base control system

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