CN107294519B - Signal distribution processing method and device - Google Patents
Signal distribution processing method and device Download PDFInfo
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- CN107294519B CN107294519B CN201710319056.7A CN201710319056A CN107294519B CN 107294519 B CN107294519 B CN 107294519B CN 201710319056 A CN201710319056 A CN 201710319056A CN 107294519 B CN107294519 B CN 107294519B
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/78—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled
- H03K17/79—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled controlling bipolar semiconductor switches with more than two PN-junctions, or more than three electrodes, or more than one electrode connected to the same conductivity region
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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
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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
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25458—Opto isolation, optical separation
Abstract
The invention discloses a method for signal distribution processing, which comprises the following steps: receiving corresponding valve control signals sent by at least one converter valve control system CCP; determining the CCP currently on duty according to the valve control signals corresponding to the CCP, and determining effective signals according to the valve control signals of the CCP currently on duty; converting the effective signal to obtain a compatible signal compatible with a VBE of a converter valve control unit, and sending the compatible signal to the VBE; and receiving the converter valve state signal sent by the VBE, converting the converter valve state signal to obtain a converter valve state signal compatible with the at least one CCP, and sending the converter valve state signal compatible with the at least one CCP to the at least one CCP. The invention also discloses a device for signal distribution processing.
Description
Technical Field
The present invention relates to the field of power systems, and in particular, to a method and an apparatus for signal distribution processing.
Background
In high-voltage direct-current transmission, a converter Valve Control system (CCP), a converter Valve Control Unit (VBE) and a Thyristor Control Unit (TCU) form the whole secondary monitoring system of a converter Valve.
At present, two situations exist in a direct current transmission project: transforming a direct current project and building a new direct current project; in the reconstruction of the direct current project and the new direct current project, because a control and protection equipment supplier and a converter valve equipment supplier are usually not the same supplier, and signals for controlling a converter valve required by different control and protection equipment are different, when only the control and protection equipment is reconstructed or only the converter valve equipment is reconstructed, the compatibility problem of the equipment is brought, and the universality and the expansibility of the equipment are poor.
Disclosure of Invention
In view of this, embodiments of the present invention are expected to provide a method and an apparatus for signal distribution processing, so as to overcome the problem of compatibility caused by different suppliers of the control and protection equipment and the converter valve equipment in the modified dc engineering and the newly-built dc engineering, and improve the universality and the expansibility of the equipment.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the invention provides a method for signal distribution processing, which comprises the following steps:
receiving corresponding valve control signals sent by at least one converter valve control system CCP;
determining the CCP currently on duty according to the valve control signals corresponding to the CCP, and determining effective signals according to the valve control signals of the CCP currently on duty;
converting the effective signal to obtain a compatible signal compatible with a VBE of a converter valve control unit, and sending the compatible signal to the VBE;
and receiving the converter valve state signal sent by the VBE, converting the converter valve state signal to obtain a converter valve state signal compatible with the at least one CCP, and sending the converter valve state signal compatible with the at least one CCP to the at least one CCP.
In the above solution, the valve control signal includes: a control signal, a duty signal and a status signal; the control signal is used for controlling at least one bridge arm of the converter valve;
the status signal comprises at least one of: locking signals, throwing bypass pair signals, rectifying inversion operation mode signals and triggering wave recording signals.
In the foregoing solution, the determining a CCP currently in an on-duty state according to the respective corresponding valve control signals, and determining an effective signal according to the valve control signal of the CCP currently in the on-duty state includes:
and determining the CCP currently in the on-duty state according to the on-duty signal in the corresponding valve control signals, and determining the control signal and the state signal of the CCP currently in the on-duty state as the effective signal.
In the foregoing solution, the converting the valid signal to obtain a compatible signal compatible with a VBE of a converter valve control unit, and sending the compatible signal to the VBE includes:
and performing conversion between transmission media and/or signal protocol conversion on the control signal and the status signal of the CCP currently on duty to obtain a control signal with a signal type compatible with the VBE and a status signal with a signal type compatible with the VBE, and sending the control signal with the signal type compatible with the VBE and the status signal with the signal type compatible with the VBE to the VBE.
In the above scheme, the converter valve state signal is obtained by the VBE according to the compatible signal and a thyristor forward voltage setup signal sent by the thyristor control unit TCU;
the converter valve state signal is obtained by the VBE according to the compatible signal and a thyristor forward voltage establishment signal sent by a thyristor control unit TCU, and includes:
carrying out logic operation on the control signal and the state signal compatible with the VBE and the thyristor forward voltage establishing signal sent by each TCU by the VBE in the on-duty state at present to obtain a thyristor ignition pulse signal;
the VBE in the on duty state sends the thyristor ignition pulse signal to the TCU;
the TCU triggers a thyristor according to the thyristor ignition pulse signal and sends a current thyristor forward voltage establishment signal to the VBE which is currently on duty;
the VBE which is currently on duty collects and calculates the current thyristor forward voltage establishment signal to obtain a converter valve state signal;
the converter valve status signal comprises: a fault signal and/or a protective trigger signal.
In the foregoing solution, the converting the converter valve state signal includes:
and carrying out conversion among transmission media and/or signal protocol conversion on the converter valve state signal.
In the foregoing solution, the performing the conversion between transmission media includes:
the optical signal and the electric signal are converted mutually;
the optical signal comprises an analog signal and/or a digital signal; the electrical signal comprises an analog signal and/or a digital signal.
In the above scheme, the at least one converter valve control system CCP is a first CCP and a second CCP.
In the foregoing solution, the receiving the valve control signals sent by the first CCP and the second CCP respectively includes:
and receiving a first control signal, a first duty signal and a first state signal which are sent by the first CCP and used for controlling at least one bridge arm of a converter valve, and a second control signal, a second duty signal and a second state signal which are sent by the second CCP and used for controlling at least one bridge arm of the converter valve.
In the foregoing solution, the determining a CCP currently in an on-duty state according to the respective corresponding valve control signals, and determining an effective signal according to the valve control signal of the CCP currently in the on-duty state includes:
when the logic state of the first duty signal is valid and the logic state of the second duty signal is invalid, determining the first CCP as a CCP currently in a duty state, and determining the first control signal and the first state signal as the valid signals;
and when the logic state of the first duty signal is invalid and the logic state of the second duty signal is valid, determining the second CCP as the CCP currently in the duty state, and determining the second duty signal and the second state signal as the valid signals.
The invention provides a device for signal distribution processing, which comprises:
the receiving module is used for receiving corresponding valve control signals sent by at least one converter valve control system CCP;
the determining module is used for determining the CCP currently on duty according to the valve control signals respectively corresponding to the CCP and determining effective signals according to the valve control signals of the CCP currently on duty;
the conversion module is used for converting the effective signal to obtain a compatible signal compatible with a VBE (video source) of a converter valve control unit and sending the compatible signal to the VBE;
the conversion module is further configured to receive a converter valve status signal sent by the VBE, convert the converter valve status signal to obtain a converter valve status signal compatible with the at least one CCP, and send the converter valve status signal compatible with the at least one CCP to the at least one CCP.
In the above solution, the valve control signal includes: a control signal, a duty signal and a status signal; the control signal is used for controlling at least one bridge arm of the converter valve;
the status signal comprises at least one of: locking signals, throwing bypass pair signals, rectifying inversion operation mode signals and triggering wave recording signals.
In the foregoing solution, the determining module is specifically configured to determine, according to an on-duty signal in the corresponding valve control signals, a CCP currently in an on-duty state, and determine a control signal and a status signal of the CCP currently in the on-duty state as the valid signals.
In the foregoing scheme, the converting module is specifically configured to perform inter-transmission-medium conversion and/or signal protocol conversion on the control signal and the status signal of the CCP currently on duty to obtain a control signal with a signal type compatible with the VBE and a status signal with a signal type compatible with the VBE, and send the control signal with a signal type compatible with the VBE and the status signal with a signal type compatible with the VBE to the VBE.
In the above scheme, the converter valve state signal is obtained by the VBE according to the compatible signal and a thyristor forward voltage setup signal sent by the thyristor control unit TCU;
the converter valve state signal is obtained by the VBE according to the compatible signal and a thyristor forward voltage establishment signal sent by a thyristor control unit TCU, and includes:
carrying out logic operation on the control signal and the state signal compatible with the VBE and the thyristor forward voltage establishing signal sent by each TCU by the VBE in the on-duty state at present to obtain a thyristor ignition pulse signal;
the VBE in the on duty state sends the thyristor ignition pulse signal to the TCU;
the TCU triggers a thyristor according to the thyristor ignition pulse signal and sends a current thyristor forward voltage establishment signal to the VBE which is currently on duty;
the VBE which is currently on duty collects and calculates the current thyristor forward voltage establishment signal to obtain a converter valve state signal;
the converter valve status signal comprises: a fault signal and/or a protective trigger signal.
In the above scheme, the conversion module is further specifically configured to perform transmission medium conversion and/or signal protocol conversion on the converter valve state signal.
In the above scheme, the conversion module is further specifically configured to convert an optical signal and an electrical signal into each other;
the optical signal comprises an analog signal and/or a digital signal; the electrical signal comprises an analog signal and/or a digital signal.
In the above scheme, the at least one converter valve control system CCP is a first CCP and a second CCP.
In the foregoing scheme, the receiving module is specifically configured to receive a first control signal, a first duty signal, and a first status signal that are sent by the first CCP and used to control at least one bridge arm of a converter valve, and a second control signal, a second duty signal, and a second status signal that are sent by the second CCP and used to control at least one bridge arm of the converter valve.
In the foregoing solution, the determining module is specifically configured to determine the first CCP as a CCP currently in an on-duty state and determine the first control signal and the first state signal as the valid signals when the logic state of the first on-duty signal is valid and the logic state of the second on-duty signal is invalid;
and when the logic state of the first duty signal is invalid and the logic state of the second duty signal is valid, determining the second CCP as the CCP currently in the duty state, and determining the second duty signal and the second state signal as the valid signals.
The method and the device for signal distribution processing provided by the embodiment of the invention receive the corresponding valve control signals sent by at least one converter valve control system CCP; determining the CCP currently on duty according to the valve control signals corresponding to the CCP, and determining effective signals according to the valve control signals of the CCP currently on duty; converting the effective signal to obtain a compatible signal compatible with a VBE of a converter valve control unit, and sending the compatible signal to the VBE; receiving a converter valve state signal sent by the VBE, converting the converter valve state signal to obtain a converter valve state signal compatible with the CCP, and sending the converter valve state signal compatible with the CCP to the CCP; signals required by CCP and VBE can be converted, so that the compatibility problem of equipment between different control and protection suppliers and converter valve suppliers in a newly-built direct current project and a direct current transformation project can be effectively solved, and the universality and the expansibility of the equipment are improved.
Drawings
Fig. 1 is a flowchart of a first embodiment of a signal distribution processing method according to the present invention;
fig. 2 is a converter valve monitoring system in a second embodiment of the signal distribution processing method of the present invention;
FIG. 3 is a flowchart of a second embodiment of a signal distribution processing method according to the present invention;
fig. 4 is a schematic diagram of a preferred signal distribution processing apparatus in a second embodiment of the signal distribution processing method of the present invention;
FIG. 5 is a schematic diagram of a spatial arrangement of a converter valve monitoring system commonly used in current engineering;
FIG. 6 is a schematic diagram of a first spatial arrangement of a converter valve monitoring system according to the present invention using the signal distribution processing method of the present invention;
FIG. 7 is a schematic diagram of a second spatial arrangement of a converter valve monitoring system using the signal distribution processing method of the present invention;
fig. 8 is a schematic structural diagram of an embodiment of the apparatus for signal distribution processing according to the present invention.
Detailed Description
The technical solution in 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.
Example one
Fig. 1 is a flowchart of a first embodiment of a signal distribution processing method according to the present invention; the signal distribution processing method provided by the embodiment of the invention is realized by a signal distribution processing device, and the signal distribution processing device is applied between a converter valve control system and a converter valve control unit; as shown in fig. 1, the method may include the steps of:
step 101: and receiving corresponding valve control signals sent by at least one converter valve control system CCP.
The signal distribution processing device receives a valve control signal sent by at least one CCP and corresponding to each CCP, and the valve control signal comprises: a control signal, a duty signal and a status signal; the control signal is used for controlling at least one bridge arm of the converter valve; the status signal includes: locking signals, throwing bypass pair signals, rectifying and inverting operation mode signals, triggering wave recording signals and the like.
For example, for two CCPs: the signal distribution processing device receives a first control signal, a first duty signal and a first state signal, wherein the first control signal and the first duty signal are sent by the first CCP, and the first state signal comprises signals such as a first locking signal and a first bypass pair signal; meanwhile, the signal distribution processing device receives a second control signal, a second value duty signal and a second state signal including signals such as a second latch signal and a second bypass pair signal, which are transmitted by the second CCP.
Step 102: and determining the CCP currently on duty according to the valve control signals corresponding to the CCP, and determining effective signals according to the valve control signals of the CCP currently on duty.
After receiving the valve control signals sent by at least one CCP, the signal distribution processing device determines the CCP currently in the on-duty state according to the on-duty signal in the valve control signals, and then determines the control signal and the state signal of the CCP currently in the on-duty state as effective signals.
Specifically, after receiving the respective corresponding valve control signals sent by at least one CCP, the signal distribution processing apparatus, for example, for two CCPs: the first CCP and the second CCP determine the CCP currently in the on-duty state according to a first on-duty signal in the first CCP valve control signals and a second on-duty signal in the second CCP valve control signals, and determine the control signal and the state signal of the CCP currently in the on-duty state as effective signals; that is, when the logic state of the first on duty signal is active and the logic state of the second on duty signal is inactive, the first CCP is determined to be the CCP currently on duty, and the first control signal and the first state signal of the first CCP are determined to be active signals; when the logic state of the second duty signal is active and the logic state of the first duty signal is inactive, the second CCP is determined to be the CCP currently in the duty state, and the second control signal and the second state signal of the second CCP are determined to be active signals.
Step 103: and converting the effective signal to obtain a compatible signal compatible with a VBE of a converter valve control unit, and sending the compatible signal to the VBE.
After determining the valid signal, the signal distribution processing device performs transmission medium conversion and/or signal protocol conversion on the valid signal, that is, a control signal and a status signal of the CCP currently on duty, that is, performs mutual conversion and/or signal protocol conversion between an optical signal and an electrical signal to obtain a compatible signal compatible with the VBE, and then sends the compatible signal to the VBE; wherein the optical signal comprises an analog signal and/or a digital signal; the electrical signals include analog signals and/or digital signals.
For example, the signal distribution processing apparatus determines that the first CCP is a CCP currently in an on-duty state, and the corresponding first control signal and the first state signal are determined valid signals; the effective signal is an optical signal, the signal type required by the VBE is an electrical signal, at the moment, the signal distribution processing device converts the first control signal and the first state signal from the optical signal type to the electrical signal, namely, the first control signal and the first state signal are converted from the optical signal type to the electrical signal type, meanwhile, the communication protocol of the first control signal and the first state signal is converted into the communication protocol required by the VBE, the control signal and the state signal compatible with the VBE are obtained, namely, the compatible signal is obtained, and then the compatible signal is sent to the VBE; therefore, the signal type and the signal communication protocol sent to the VBE are the signal type and the signal communication protocol required by the VBE, and the problem of compatibility of different control and protection suppliers and converter valve supplier equipment in a newly-built direct current project and a direct current transformation project can be effectively solved; meanwhile, the signal sent by the CCP to the signal distribution processing apparatus usually includes both an electrical signal and an optical signal, and then the signal can be converted into an optical signal with good anti-interference performance by the signal distribution processing apparatus and then transmitted to the VBE.
Step 104: and receiving the converter valve state signal sent by the VBE, converting the converter valve state signal to obtain a converter valve state signal compatible with the at least one CCP, and sending the converter valve state signal compatible with the at least one CCP to the at least one CCP.
After sending the obtained compatible signal to the VBE, the signal distribution processing device receives a converter valve state signal sent by the VBE; wherein the converter valve status signal comprises: the converter valve state signal is obtained by a thyristor forward voltage establishment (IP) signal sent by a VBE according to a compatible signal and a TCU (thyristor control Unit); specifically, the VBE currently on duty performs logical operation on a control signal and a status signal compatible with the VBE and an IP signal sent by each TCU to obtain a thyristor Firing Pulse (FP) signal; then, the VBE currently on duty sends the FP signal to the TCU, the TCU triggers the thyristor according to the FP signal, and sends a current IP signal to the VBE currently on duty; at this time, the VBE currently on duty collects and calculates the current IP signal, so as to obtain a converter valve status signal.
After receiving the converter valve status signal sent by the VBE, the signal distribution processing apparatus performs conversion between transmission media and/or signal protocol conversion on the converter valve status signal, that is, performs mutual conversion between an optical signal and an electrical signal and/or signal protocol conversion, converts the signal type of the converter valve status signal into a signal type required by at least one CCP, that is, converts the signal type into a converter valve status signal compatible with at least one CCP, and then sends the obtained converter valve status signal compatible with at least one CCP to the at least one CCP.
For example, the converter valve status signal sent by the VBE is an electrical signal, and the type of the signal required by the CCP is an optical signal, and then, after receiving the converter valve status signal, the signal distribution processing apparatus converts the signal from the electrical signal type to the optical signal, that is, converts the converter valve status signal from the electrical signal type to the optical signal type, converts the communication protocol of the converter valve status signal to the communication protocol required by the at least one CCP, obtains a converter valve status signal compatible with the at least one CCP, and then sends the signal to the at least one CCP.
In the method for signal distribution processing provided by the embodiment of the invention, the signal distribution processing device receives the corresponding valve control signals sent by at least one CCP; determining the CCP currently on duty according to the valve control signals corresponding to the CCP, and determining effective signals according to the valve control signals of the CCP currently on duty; converting the effective signal to obtain a compatible signal compatible with the VBE, and sending the compatible signal to the VBE; receiving a converter valve state signal sent by the VBE, converting the converter valve state signal to obtain a converter valve state signal compatible with the at least one CCP, and sending the converter valve state signal compatible with the at least one CCP to the at least one CCP; signals required by CCP and VBE can be converted, so that the compatibility problem of equipment between different control and protection suppliers and converter valve suppliers in a newly-built direct current project and a direct current transformation project can be effectively solved, and the universality and the expansibility of the equipment are improved.
Example two
Fig. 2 is a converter valve monitoring system in a second embodiment of the signal distribution processing method of the present invention; as shown in fig. 2, the converter valve monitoring system provided by the present embodiment includes 4 parts: a converter valve control system 21(CCP21), a signal distribution processing device 22, a converter valve control unit 23(VBE23), and a converter valve 24; the converter valve control system 21 is composed of a converter valve control a system CCP _ a and a converter valve control B system CCP _ B, the signal distribution processing device 22 is composed of a logic operation module and a photoelectric/electro-optical conversion module, the converter valve control unit 23 is composed of a converter valve control unit a system VBE _ a, a converter valve control unit B system VBE _ B and an interface module, and the converter valve 24 is a controlled thyristor converter valve including at least one bridge arm.
It should be noted that the converter valve control systems 21 are only illustrated by two, and the specific number can be set according to actual requirements, and is not limited herein; the converter valve control units 23 are also illustrated as two, and the specific number can be set according to actual requirements, and is not limited herein.
The present embodiment further explains and explains the method of signal distribution processing according to the present invention by taking the converter valve monitoring system shown in fig. 2 as an example, which is only for illustration and is not used to limit the present invention.
FIG. 3 is a flowchart of a second embodiment of a signal distribution processing method according to the present invention; as shown in fig. 3, a method for signal distribution processing according to an embodiment of the present invention may include the following steps:
step 301: the signal distribution processing device 22 receives the valve control signal transmitted by CCP _ a.
The signal distribution processing device 22 receives the valve control signal sent by CCP _ a, that is, receives the state signals of the control signal CP _ a, the duty signal ACTIVE _ a and CCP _ a sent by CCP _ a; wherein, the status signal of CCP _ A comprises: the latch signal DEBLOCK _ A, the bypass pair signal BPPO _ A, the rectification inversion operation mode signal INV _ A, the trigger wave recording signal REC _ TRIG _ A, the low VOLTAGE signal VOLTAGE _ A, and the like.
Step 302: the signal distribution processing device 22 receives the valve control signal transmitted by CCP _ B.
The signal distribution processing device 22 receives the valve control signal sent by CCP _ B, that is, receives the state signals of the control signal CP _ B, the duty signal ACTIVE _ B and CCP _ B sent by CCP _ B; wherein, the status signal of CCP _ B comprises: a latch signal DEBLOCK _ B, a bypass pair signal BPPO _ B, a rectification inversion operation mode signal INV _ B, a trigger wave recording signal REC _ TRIG _ B, a low VOLTAGE signal VOLTAGE _ B, and the like.
Step 303: the signal distribution processing device 22 determines the CCP currently on duty according to the valve control signal of CCP _ a and the valve control signal of CCP _ B.
After receiving the valve control signal of CCP _ a and the valve control signal of CCP _ B, the signal distribution processing apparatus 22 determines the CCP currently in the on-duty state according to ACTIVE _ a in the valve control signal of CCP _ a and ACTIVE _ B in the valve control signal of CCP _ B.
Specifically, when the logic state of ACTIVE _ a is valid and the logic state of ACTIVE _ B is invalid, the logic operation module of the signal distribution processing apparatus 22 determines that the current CCP _ a is in the on-duty state and the CCP _ B is in the standby state; when the logic state of ACTIVE _ B is valid and the logic state of ACTIVE _ a is invalid, the logic operation module determines that the current CCP _ B is in the duty state and CCP _ a is in the standby state.
For example, if the logic state "1" is set to be valid and "0" is set to be invalid, the logic operation module receives that ACTIVE _ a is 1 and ACTIVE _ B is 0, and then the logic operation module determines that the current CCP _ a is in the duty state and CCP _ B is in the standby state.
Step 304: the signal distribution processing device 22 determines the control signal and the status signal of the CCP currently on duty as valid signals.
The signal distribution processing device 22 determines the control signal and the status signal of the CCP currently on duty as the currently valid control signal and the valid status signal after determining the CCP currently on duty.
For example, if the logic operation module of the signal distribution processing apparatus 22 determines that the CCP _ a is currently in the on-duty state and the CCP _ B is currently in the standby state, the signal distribution processing apparatus 22 determines the CP _ a as the currently active control signal and determines the status signals such as debug _ A, BPPO _ A, INV _ A, REC _ TRIG _ A, VOLTAGE _ a as the currently active status signals.
Step 305: the signal distribution processing device 22 converts the valid signal into a compatible signal compatible with the VBE 23.
After the signal distribution processing device 22 determines the current effective control signal and the effective status signal, the optical-electrical-to-optical conversion module performs conversion between transmission media and/or signal protocol conversion on the effective control signal and the effective status signal, that is, performs mutual conversion and/or signal protocol conversion between an optical signal and an electrical signal, converts the signal types of the effective control signal and the effective status signal into the signal type required by VBE23, and converts the communication protocol into the communication protocol required by VBE 23; therefore, any analog quantity signal of any communication protocol can be converted into any analog quantity signal of any required communication protocol, different requirements of CCP and VBE required signal types of different manufacturers can be met, and good expansibility is achieved.
For example, the signal distribution processing device 22 determines that the current active control signal is CP _ a, the current active status signal is status signals such as debug _ A, BPPO _ a, and assuming that these signals are electrical signals and the type of signal required by VBE23 is optical signal, at this time, the optical-electrical/electrical-optical conversion module of the signal distribution processing device 22 will convert the CP _ A, DEBLOCK _ A, BPPO _ a and other signals, convert these signals from electrical signal type to optical signal type, and convert their communication protocols to the communication protocols required by VBE23, so as to obtain the active control signal and the active status signal compatible with VBE 23.
In practical application, signals sent by the CCP to the signal distribution processing apparatus generally include both electrical signals and optical signals, and in this link, the signals can be converted into optical signals with good anti-interference performance by the signal distribution processing apparatus and then transmitted to the next control link, that is, transmitted to the VBE; in this way, when the engineering is implemented, the VBE does not need to be arranged near the CCP, and the high-voltage converter valve monitoring system has more flexibility in the aspect of spatial arrangement due to the existence of the signal distribution processing device.
Step 306: the signal distribution processing device 22 transmits the compatible signal to VBE _ a and VBE _ B.
The signal distribution processing apparatus 22, after converting the valid signal into a compatible signal compatible with VBE, transmits the compatible signal to VBE _ a and VBE _ B, which receive the compatible signal at the same time.
Step 307: VBE _ A and VBE _ B communicate with each other to determine the VBE currently on duty.
After the VBE _ a and the VBE _ B receive the compatible signal sent by the signal distribution processing device 22, the VBE _ a and the VBE _ B communicate with each other, and the VBE currently in the on-duty state is determined according to the respective on-duty state signal.
For example, setting logic state "1" as valid and "0" as invalid, after VBE _ a and VBE _ B communicate with each other, it is determined that the on duty status signal of VBE _ a is 1 and the on duty status signal of VBE _ B is 0, and it is determined that VBE _ a is currently on duty and VBE _ B is in standby.
Step 308: VBE _ A and VBE _ B simultaneously receive the IP signals sent by each TCU.
And the VBE _ A and the VBE _ B simultaneously receive the IP signals sent by the TCUs through the interface module.
Step 309: and the VBE in the duty state carries out logic operation on the compatible signal and the IP signal to generate an FP signal.
After determining the VBE currently on duty and receiving the IP signal sent by each TCU, the VBE currently on duty performs logical operation on the received compatible signal and the IP signal, that is, performs logical operation on the received valid control signal and valid state signal compatible with VBE23 and the received IP signal sent by each TCU, and generates an FP signal.
Step 310: the VBE currently on duty sends the FP signal to each TCU.
Step 311: and each TCU triggers a thyristor according to the FP signal and sends a current IP signal to the VBE which is currently in the duty state.
After receiving the FP signal, the TCU triggers each thyristor according to the FP signal and sends the current IP signal to the VBE which is currently on duty.
Step 312: and the VBE in the duty state at present collects and calculates the current IP signal to obtain a converter valve state signal.
The VBE which is currently on duty collects and calculates the current IP signal to obtain a converter valve state signal; wherein the converter valve status signal comprises a fault signal, a protective trigger signal and the like.
For example, VBE _ a and VBE _ B communicate with each other, and it is determined that the current VBE _ a is in the on-duty state, the VBE _ a performs logical operation on the effective control signal and the effective state signal compatible with the VBE received from the signal distribution processing apparatus 22 and the IP signal received from each TCU, generates an FP signal, and sends the FP signal to each TCU through the interface module, and the TCU triggers the thyristor according to the FP signal; meanwhile, the VBE _ a receives a current IP signal from the TCU, and performs summarization and operation on the current IP signal to obtain a converter valve status signal, such as a fault signal of the converter valve.
Step 313: the VBE, which is currently on duty, sends the converter valve status signal to the signal distribution processing device 22.
Step 314: the signal distribution processing device 22 converts the converter valve status signals to obtain converter valve status signals compatible with CCP 21.
After receiving the converter valve status signal, the signal distribution processing device 22 performs conversion between transmission media for the converter valve status signal, such as conversion from an optical signal to an electrical signal, conversion from an electrical signal to an optical signal, and the like, so that the type of the converter valve status signal is the signal type required by CCP 21; meanwhile, the converter valve state signal is subjected to signal protocol conversion and converted into a communication protocol required by CCP21, so that the converter valve state signal compatible with CCP21 is obtained.
Step 315: the signal distribution processing apparatus 22 transmits a converter valve status signal compatible with CCP21 to CCP 21.
The signal distribution processing device 22 transmits the converted converter valve status signals to the CCP21 after converting the converter valve status signals into converter valve status signals compatible with the CCP 21.
In practical applications, the signals received by the CCP from the signal distribution processing apparatus further include: the VBE status signal VBE _ OK, VBE TRIP command signal VBE _ TRIP, etc. in the embodiment of the present invention, only the most common control signal is listed to describe the procedure of the signal distribution processing method, and the present invention is not limited herein.
In order to more clearly embody the object of the present invention, further illustration is made on the basis of the above-mentioned method embodiment.
Fig. 4 is a schematic diagram of a preferred signal distribution processing apparatus in a second embodiment of the signal distribution processing method of the present invention; as shown in fig. 4, the signal distribution processing apparatus 04 provided in this embodiment is composed of a logical operation module 41 and a photoelectric/electro-optical conversion module 42; the logic operation module 41 includes at least one Analog to Digital (a/D) conversion circuit and at least one Field programmable gate array (Field)
Programmable Gate Array, FPGA) chip; the photoelectric/electro-optical conversion module 42 includes at least two a/D conversion circuits a/D1 and a/D2, at least two Digital to Analog (D/a) conversion circuits D/a1 and D/a2, and at least one Digital Signal Processor (DSP) chip; the a/D conversion circuit has a function of converting an electric signal or an optical signal into a digital signal, and the D/a conversion circuit has a function of converting a digital signal into an electric signal or an optical signal.
Specifically, if the logic operation module 41 receives ACTIVE _ a as 1 and ACTIVE _ B as 0, it determines that the current CCP _ a is in the on-duty state and CCP _ B is in the standby state; at this time, the signal distribution processing apparatus 04 selects CP _ a as the current active control signal, and selects a status signal such as debug _ A, BPPO _ a as the current active status signal; assuming that the current active control signal and the active status signal are both electrical signals, and the signal type required by the VBE is an optical signal, the optical-electrical/optical-electrical conversion module 42 needs to convert the electrical signals into optical signals; specifically, the photoelectric/electro-optical conversion module 42 converts the electrical signal into a digital signal through an a/D1 conversion circuit, and after the DSP operation processing, converts the obtained processed digital signal into an optical signal required by VBE through a D/a1 conversion circuit; in the process, the communication protocol of the effective control signal and the effective status signal is also converted into the communication protocol required by the VBE; meanwhile, the optical-electrical/electrical-optical conversion module 42 also needs to convert the converter valve status signal sent by the VBE, that is, needs to convert the converter valve status signal from an optical signal to an electrical signal; similarly, the A/D2 conversion circuit converts the received converter valve state signal into a digital signal, and after the digital signal is processed by DSP operation, the D/A2 conversion circuit converts the processed digital signal into an electric signal required by CCP; in the process, the communication protocol of the converter valve state signal is also converted into the communication protocol required by CCP; thus, the signal compatibility between CCP and VBE can be realized.
The logic operation module 41 and the photoelectric/electro-optical conversion module 42 are programmable, and the logic operation method and the signal conversion mode can be set according to the actual engineering requirements, so that the expandability is good.
FIG. 5 is a schematic diagram of a spatial arrangement of a converter valve monitoring system commonly used in current engineering; as shown in fig. 5, the CCP is connected to the VBE by a hybrid connection method of a cable and an optical fiber, and the VBE is connected to the converter valve by an optical fiber connection method; due to the limitation that the cable is easy to interfere in transmitting signals over long distance, the CCP and the VBE need to be arranged in the same control room, and the spatial arrangement of the CCP and the VBE has certain limitation.
Fig. 6 is a schematic diagram of a first spatial arrangement of a converter valve monitoring system adopting the signal distribution processing method of the present invention, which corresponds to a direct current engineering reconstruction; as shown in fig. 6, the signal distribution processing apparatus is between the CCP and the VBE; when direct current engineering transformation is carried out, the signal distribution processing device and the VBE are arranged together, the CCP is connected and communicated with the signal distribution processing device through an optical fiber, the signal distribution processing device is connected with the VBE through the optical fiber or a cable or the optical fiber and the cable are used at the same time, and the VBE is connected and communicated with the converter valve through the optical fiber; compared with the spatial arrangement mode shown in fig. 5, due to the application of the signal distribution processing device, the connection between the CCP and the VBE can be performed through the optical fiber with stronger interference resistance, so that the arrangement of the VBE is no longer limited to the vicinity of the CCP, i.e., the position of the VBE in the converter valve monitoring system is not limited.
FIG. 7 is a schematic diagram of a second spatial arrangement of a converter valve monitoring system using the signal distribution processing method of the present invention; as shown in fig. 7, the signal distribution processing device is located between the CCP and the VBE, the CCP, the signal distribution processing device and the VBE are all disposed in a control room, the signal distribution processing device and the CCP and the VBE can communicate with each other by using a cable or an optical fiber or both the cable and the optical fiber as required, and the VBE communicates with the converter valve through the optical fiber; for the spatial arrangement mode shown in fig. 5, in the reconstruction of the dc engineering and the new construction of the dc engineering, when the CCP and the VBE are different suppliers, the compatibility problem will exist in the signals interacted between the CCP and the VBE, each engineering needs to be developed separately for the second time, the universality and expansibility of the device are poor, and the development consumes time and labor; and by adopting the spatial arrangement mode as shown in fig. 7, a signal distribution processing device is applied between the CCP and the VBE to convert signals required by the CCP and the VBE, so that different requirements of different types of signals required by CCP and VBE of different manufacturers can be met, any analog quantity signal (such as optical signal and electric signal) of any communication protocol can be converted into a digital signal to be subjected to operation processing, and the digital signal is converted into any analog quantity signal (such as optical signal and electric signal) of any communication protocol to be output, and the signal distribution processing device has good universality and expansibility.
It should be noted that the above two embodiments are only for illustrating the spatial arrangement flexibility and the signal conversion function of the signal distribution processing apparatus with emphasis, and the practical application is not limited to the application provided by the above two embodiments.
In the method for signal distribution processing provided by the embodiment of the present invention, a signal distribution processing device 22 receives a valve control signal sent by CCP _ a; the signal distribution processing device 22 receives the valve control signal sent by CCP _ B; the signal distribution processing device 22 determines the CCP currently on duty according to the valve control signal of CCP _ a and the valve control signal of CCP _ B; the signal distribution processing device 22 determines the control signal and the status signal of the CCP currently on duty as valid signals; the signal distribution processing device 22 converts the effective signal into and
VBE 23-compatible signals; the signal distribution processing device 22 transmits the compatible signal to VBE _ a and VBE _ a
VBE _ B; VBE _ A and VBE _ B are communicated with each other, and the VBE in the on-duty state at present is determined; VBE _ A and VBE _ B receive IP signals sent by each TCU at the same time; the VBE in the on duty state carries out logic operation on the compatible signal and the IP signal to generate an FP signal; the VBE in the on duty state sends the FP signal to each TCU; each TCU triggers a thyristor according to the FP signal and sends a current IP signal to the VBE which is currently on duty; the VBE which is currently on duty collects and calculates the current IP signal to obtain a converter valve state signal; the VBE currently on duty sends the converter valve status signal to the signal distribution processing device 22; the signal distribution processing device 22 converts the converter valve state signal to obtain a converter valve state signal compatible with CCP 21; the signal distribution processing apparatus 22 transmits a converter valve status signal compatible with CCP21 to CCP 21; by applying the signal distribution processing device 22 between the CCP21 and the VBE23, the arrangement of the VBE23 is no longer limited to the vicinity of the CCP21, the position thereof in the converter valve monitoring system is not limited, and the spatial arrangement is more flexible; meanwhile, the signal distribution processing device 22 can convert signals required by CCP21 and VBE23 to meet different requirements of CCP and VBE required signal types of different manufacturers, can convert any analog quantity signal of any communication protocol into a digital signal to perform operation processing, and convert the digital signal into any analog quantity signal of any communication protocol to output, can effectively solve the compatibility problem of different control and protection suppliers and converter valve supplier equipment in the reconstruction direct current engineering and the newly-built direct current engineering, and has good universality; the logical operation method and the signal conversion mode can be set according to the actual engineering requirements, and the method has good expandability.
EXAMPLE III
Fig. 8 is a schematic structural diagram of an embodiment of the apparatus for signal distribution processing according to the present invention; as shown in fig. 8, the apparatus 08 for signal distribution processing according to the embodiment of the present invention includes: a receiving module 81, a determining module 82, a converting module 83; wherein the content of the first and second substances,
the receiving module 81 is configured to receive a corresponding valve control signal sent by at least one converter valve control system CCP;
the determining module 82 is configured to determine a CCP currently in an on-duty state according to the respective corresponding valve control signals, and determine an effective signal according to the valve control signal of the CCP currently in the on-duty state;
the conversion module 83 is configured to convert the effective signal to obtain a compatible signal compatible with a VBE of a converter valve control unit, and send the compatible signal to the VBE;
the converting module 83 is further configured to receive a converter valve status signal sent by the VBE, convert the converter valve status signal to obtain a converter valve status signal compatible with the at least one CCP, and send the converter valve status signal compatible with the at least one CCP to the at least one CCP.
Further, the valve control signal comprises: a control signal, a duty signal and a status signal; the control signal is used for controlling at least one bridge arm of the converter valve;
the status signal comprises at least one of: locking signals, throwing bypass pair signals, rectifying inversion operation mode signals and triggering wave recording signals.
Further, the determining module 82 is specifically configured to determine the CCP currently in the on-duty state according to the on-duty signal in the corresponding valve control signals, and determine the control signal and the status signal of the CCP currently in the on-duty state as the valid signals.
Further, the converting module 83 is specifically configured to perform conversion between transmission media and/or signal protocol conversion on the control signal and the status signal of the CCP currently in the on-duty state, obtain a control signal with a signal type compatible with the VBE and a status signal with a signal type compatible with the VBE, and send the control signal with a signal type compatible with the VBE and the status signal with a signal type compatible with the VBE to the VBE.
Further, the converter valve state signal is obtained by the VBE according to the compatible signal and a thyristor forward voltage setup signal sent by the thyristor control unit TCU;
the converter valve state signal is obtained by the VBE according to the compatible signal and a thyristor forward voltage establishment signal sent by a thyristor control unit TCU, and includes:
carrying out logic operation on the control signal and the state signal compatible with the VBE and the thyristor forward voltage establishing signal sent by each TCU by the VBE in the on-duty state at present to obtain a thyristor ignition pulse signal;
the VBE in the on duty state sends the thyristor ignition pulse signal to the TCU;
the TCU triggers a thyristor according to the thyristor ignition pulse signal and sends a current thyristor forward voltage establishment signal to the VBE which is currently on duty;
the VBE which is currently on duty collects and calculates the current thyristor forward voltage establishment signal to obtain a converter valve state signal;
the converter valve status signal comprises: a fault signal and/or a protective trigger signal.
Further, the conversion module 83 is further specifically configured to perform transmission medium conversion and/or signal protocol conversion on the converter valve status signal.
The conversion module 83 is further specifically configured to convert the optical signal and the electrical signal into each other;
the optical signal comprises an analog signal and/or a digital signal; the electrical signal comprises an analog signal and/or a digital signal.
Further, the at least one converter valve control system CCP is a first CCP and a second CCP.
Further, the receiving module 81 is specifically configured to receive a first control signal, a first duty signal, and a first status signal, which are sent by the first CCP and used for controlling at least one bridge arm of the converter valve, and a second control signal, a second duty signal, and a second status signal, which are sent by the second CCP and used for controlling at least one bridge arm of the converter valve.
Further, the determining module 82 is specifically configured to determine the first CCP as the CCP currently in the on-duty state, and determine the first control signal and the first state signal as the valid signals, when the logic state of the first on-duty signal is valid and the logic state of the second on-duty signal is invalid;
and when the logic state of the first duty signal is invalid and the logic state of the second duty signal is valid, determining the second CCP as the CCP currently in the duty state, and determining the second duty signal and the second state signal as the valid signals.
The signal distribution processing apparatus of this embodiment may be configured to execute the technical solutions of the above-mentioned method embodiments, and the implementation principles and technical effects thereof are similar, and are not described herein again.
In practical applications, the receiving module 81, the determining module 82, and the converting module 83 of the signal distribution Processing apparatus 08 may be implemented by a Central Processing Unit (CPU), a microprocessor Unit (MPU), a DSP, an FPGA, or the like in the signal distribution Processing apparatus 08.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (20)
1. A method of signal distribution processing, the method comprising:
receiving corresponding valve control signals sent by at least one converter valve control system CCP;
determining the CCP currently on duty according to the valve control signals corresponding to the CCP, and determining effective signals according to the valve control signals of the CCP currently on duty;
converting the effective signal to obtain a compatible signal compatible with a VBE of a converter valve control unit, and sending the compatible signal to the VBE; converting the effective signal into interconversion between an optical signal and an electric signal and/or signal protocol conversion; the signal protocol conversion comprises the communication protocol of the effective signal is converted into the communication protocol required by the VBE;
receiving a converter valve state signal sent by the VBE, converting the converter valve state signal to obtain a converter valve state signal compatible with the at least one CCP, and sending the converter valve state signal compatible with the at least one CCP to the at least one CCP; the converter valve status signals compatible with the at least one CCP include communication protocols required to convert the converter valve status signals from electrical signal types to optical signal types and to convert communication protocols to the at least one CCP.
2. The method of claim 1, wherein the valving signal comprises: a control signal, a duty signal and a status signal; the control signal is used for controlling at least one bridge arm of the converter valve;
the status signal comprises at least one of: locking signals, throwing bypass pair signals, rectifying inversion operation mode signals and triggering wave recording signals.
3. The method of claim 2 wherein said determining a current on-duty CCP based on said respective valve control signals and determining valid signals based on said valve control signals of said current on-duty CCP comprises:
and determining the CCP currently in the on-duty state according to the on-duty signal in the corresponding valve control signals, and determining the control signal and the state signal of the CCP currently in the on-duty state as the effective signal.
4. The method of claim 2, wherein converting the valid signal to obtain a compatible signal compatible with a converter valve control unit (VBE) and sending the compatible signal to the VBE comprises:
and performing conversion between transmission media and/or signal protocol conversion on the control signal and the status signal of the CCP currently on duty to obtain a control signal with a signal type compatible with the VBE and a status signal with a signal type compatible with the VBE, and sending the control signal with the signal type compatible with the VBE and the status signal with the signal type compatible with the VBE to the VBE.
5. The method of claim 1, wherein the converter valve status signal is derived by the VBE from the compliance signal and a thyristor forward voltage setup signal sent by a thyristor control unit TCU;
the converter valve state signal is obtained by the VBE according to the compatible signal and a thyristor forward voltage establishment signal sent by a thyristor control unit TCU, and includes:
carrying out logic operation on the control signal and the state signal compatible with the VBE and the thyristor forward voltage establishing signal sent by each TCU by the VBE in the on-duty state at present to obtain a thyristor ignition pulse signal;
the VBE in the on duty state sends the thyristor ignition pulse signal to the TCU;
the TCU triggers a thyristor according to the thyristor ignition pulse signal and sends a current thyristor forward voltage establishment signal to the VBE which is currently on duty;
the VBE which is currently on duty collects and calculates the current thyristor forward voltage establishment signal to obtain a converter valve state signal;
the converter valve status signal comprises: a fault signal and/or a protective trigger signal.
6. The method of claim 1, wherein the converting the converter valve status signal comprises:
and carrying out conversion among transmission media and/or signal protocol conversion on the converter valve state signal.
7. The method of claim 4 or 6, wherein the switching between transmission media comprises:
the optical signal and the electric signal are converted mutually;
the optical signal comprises an analog signal and/or a digital signal; the electrical signal comprises an analog signal and/or a digital signal.
8. The method of claim 1, wherein said at least one converter valve control system CCP is a first CCP and a second CCP.
9. The method of claim 8, wherein said receiving respective valve control signals sent by the first CCP and the second CCP comprises:
and receiving a first control signal, a first duty signal and a first state signal which are sent by the first CCP and used for controlling at least one bridge arm of a converter valve, and a second control signal, a second duty signal and a second state signal which are sent by the second CCP and used for controlling at least one bridge arm of the converter valve.
10. The method of claim 9 wherein said determining a current on-duty CCP based on said respective valve control signals and determining valid signals based on said valve control signals of said current on-duty CCP comprises:
when the logic state of the first duty signal is valid and the logic state of the second duty signal is invalid, determining the first CCP as a CCP currently in a duty state, and determining the first control signal and the first state signal as the valid signals;
and when the logic state of the first duty signal is invalid and the logic state of the second duty signal is valid, determining the second CCP as the CCP currently in the duty state, and determining the second duty signal and the second state signal as the valid signals.
11. An apparatus for signal distribution processing, the apparatus comprising:
the receiving module is used for receiving corresponding valve control signals sent by at least one converter valve control system CCP;
the determining module is used for determining the CCP currently on duty according to the valve control signals respectively corresponding to the CCP and determining effective signals according to the valve control signals of the CCP currently on duty;
the conversion module is used for converting the effective signal to obtain a compatible signal compatible with a VBE (video source) of a converter valve control unit and sending the compatible signal to the VBE; converting the effective signal into interconversion between an optical signal and an electric signal and/or signal protocol conversion; the signal protocol conversion comprises the communication protocol of the effective signal is converted into the communication protocol required by the VBE;
the conversion module is further configured to receive a converter valve status signal sent by the VBE, convert the converter valve status signal to obtain a converter valve status signal compatible with the at least one CCP, and send the converter valve status signal compatible with the at least one CCP to the at least one CCP; the converter valve status signals compatible with the at least one CCP include communication protocols required to convert the converter valve status signals from electrical signal types to optical signal types and to convert communication protocols to the at least one CCP.
12. The apparatus of claim 11, wherein the valving signal comprises: a control signal, a duty signal and a status signal; the control signal is used for controlling at least one bridge arm of the converter valve;
the status signal comprises at least one of: locking signals, throwing bypass pair signals, rectifying inversion operation mode signals and triggering wave recording signals.
13. The apparatus as claimed in claim 12, wherein the determining module is specifically configured to determine a CCP currently in an on-duty state according to an on-duty signal in the respective corresponding valve control signals, and determine a control signal and a status signal of the CCP currently in the on-duty state as the valid signals.
14. The apparatus of claim 12, wherein the converting module is specifically configured to perform inter-transmission-medium conversion and/or signal protocol conversion on the control signal and the status signal of the CCP currently in the on-duty state, obtain a control signal with a signal type compatible with the VBE and a status signal with a signal type compatible with the VBE, and send the control signal with a signal type compatible with the VBE and the status signal with a signal type compatible with the VBE to the VBE.
15. The apparatus of claim 11, wherein the converter valve status signal is derived by the VBE from the compliance signal and a thyristor forward voltage setup signal sent by a thyristor control unit TCU;
the converter valve state signal is obtained by the VBE according to the compatible signal and a thyristor forward voltage establishment signal sent by a thyristor control unit TCU, and includes:
carrying out logic operation on the control signal and the state signal compatible with the VBE and the thyristor forward voltage establishing signal sent by each TCU by the VBE in the on-duty state at present to obtain a thyristor ignition pulse signal;
the VBE in the on duty state sends the thyristor ignition pulse signal to the TCU;
the TCU triggers a thyristor according to the thyristor ignition pulse signal and sends a current thyristor forward voltage establishment signal to the VBE which is currently on duty;
the VBE which is currently on duty collects and calculates the current thyristor forward voltage establishment signal to obtain a converter valve state signal;
the converter valve status signal comprises: a fault signal and/or a protective trigger signal.
16. The apparatus according to claim 11, wherein the conversion module is further specifically configured to perform inter-transmission-medium conversion and/or signal protocol conversion on the converter valve status signal.
17. The apparatus according to claim 14 or 16, wherein the conversion module is further configured to convert the optical signal and the electrical signal into each other;
the optical signal comprises an analog signal and/or a digital signal; the electrical signal comprises an analog signal and/or a digital signal.
18. The apparatus of claim 11 wherein said at least one converter valve control system CCP is a first CCP and a second CCP.
19. The apparatus as claimed in claim 18, wherein the receiving module is specifically configured to receive a first control signal, a first duty signal and a first status signal sent by the first CCP for controlling at least one leg of a converter valve, and a second control signal, a second duty signal and a second status signal sent by the second CCP for controlling at least one leg of the converter valve.
20. The apparatus of claim 19, wherein the means for determining is configured to determine the first CCP as a CCP currently in an on duty state, and determine the first control signal and the first state signal as the valid signals, when the logic state of the first on duty signal is valid and the logic state of the second on duty signal is invalid;
and when the logic state of the first duty signal is invalid and the logic state of the second duty signal is valid, determining the second CCP as the CCP currently in the duty state, and determining the second duty signal and the second state signal as the valid signals.
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