CN110365102B - Monitoring system and monitoring method for high-voltage direct-current circuit breaker - Google Patents
Monitoring system and monitoring method for high-voltage direct-current circuit breaker Download PDFInfo
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Abstract
The invention relates to a monitoring system and a monitoring method for a high-voltage direct-current circuit breaker, which comprise an upper computer PC device and a lower computer monitoring device, wherein the lower computer monitoring device comprises at least one circuit breaker monitoring unit; the circuit breaker monitoring unit is used for receiving analog quantity information and state information bits of the high-voltage direct-current circuit breaker, generating corresponding SOE event information according to the position change condition of the state information bits, marking time marks on the analog quantity information and the SOE event information, storing the analog quantity information and the SOE event information into an event buffer area to wait for sending, sending the analog quantity information serving as remote measurement and the state information bits serving as remote communication quantity to PC equipment of an upper computer through a standard Ethernet interface for displaying; and the PC equipment of the upper computer is used for checking the state of the analog quantity information to be sent and the SOE event buffer area and sending the analog quantity information with the time mark and the SOE event information according to the sequence of entering the storage area. The invention can monitor the state and information of the breaker in real time, accurately acquire fault information in time in a fault state, and analyze and repair the fault mechanism.
Description
Technical Field
The invention relates to a monitoring technology of a direct current circuit breaker, in particular to a monitoring system and a monitoring method for a high-voltage direct current circuit breaker.
Background
The high-voltage direct-current circuit breaker guarantees the reliability, flexibility and continuity of multi-terminal high-voltage direct-current transmission, and information of the high-voltage direct-current circuit breaker serving as core and key equipment of the high-voltage direct-current transmission needs to be monitored in real time. The accurate acquisition of the operating state information of the circuit breaker and the fault information in the fault state is the requirement of the system on a protection device, the feasibility and the reliability of the monitoring system of the high-voltage direct-current circuit breaker are very important, and no design scheme aiming at the monitoring system of the high-voltage direct-current circuit breaker is found at home and abroad at present.
The current high-voltage direct-current circuit breaker monitoring system cannot monitor the state and information of the circuit breaker, and cannot acquire fault information in a fault state, so that the high-voltage direct-current circuit breaker breaks down and cannot find problems in time.
Disclosure of Invention
In order to improve the feasibility of a monitoring system of a high-voltage direct-current circuit breaker, the invention aims to provide the monitoring system and the monitoring method for the high-voltage direct-current circuit breaker.
The purpose of the invention is realized by adopting the following technical scheme:
the invention provides a monitoring system for a high-voltage direct-current circuit breaker, which comprises an upper computer PC device and a lower computer monitoring device, wherein the lower computer monitoring device is connected with the high-voltage direct-current circuit breaker; two circuit breaker monitoring units in the circuit breaker monitoring units are connected through a valve control unit of the high-voltage direct-current circuit breaker;
the circuit breaker monitoring unit is used for receiving analog quantity information and a state information bit of the high-voltage direct-current circuit breaker, generating corresponding SOE event information according to the displacement condition of the state information bit, marking time marks on the analog quantity information and the SOE event information, storing the analog quantity information and the SOE event information into an event buffer area for waiting to be sent, sending the analog quantity information serving as remote measurement and the state information bit serving as remote communication quantity to PC equipment of an upper computer through a standard Ethernet interface for displaying;
and the upper computer PC equipment is used for checking the analog quantity information to be sent and the state of the SOE event buffer area, and sending the analog quantity information with a time scale and the SOE event information according to the sequence of entering the storage area.
Furthermore, the analog quantity information comprises mechanical switch capacitor voltage value information transmitted by the high-voltage direct-current breaker control protection unit, analog quantity information of a photocurrent transformer OCT, and sub-module voltage information transmitted by the high-voltage direct-current breaker valve control unit;
the state information bits comprise a high-voltage direct-current breaker control protection unit, a mechanical switch, a valve control unit, OCT state information bits and sub-module state information bits.
Further, the circuit breaker monitoring unit comprises a manual wave recording module and an automatic wave recording module; when receiving a wave recording command of the PC equipment of the upper computer, the manual wave recording module performs wave recording operation on the analyzed SOE event and the voltage information of the sub-module of the high-voltage direct-current circuit breaker, generates a wave recording file, converts the wave recording file into a TCP/IP protocol and uploads the TCP/IP protocol to the PC equipment of the upper computer through the Ethernet;
the automatic wave recording module is used for automatically recording waves when the sensitive events are generated.
Further, the circuit breaker monitoring unit includes a GPS clock; and the at least one circuit breaker monitoring unit receives the time tick information of the GPS clock, and the GPS clock is used as a standard clock source.
Furthermore, the PC equipment of the upper computer adopts an FPGA-PowerPC dual-core processor and is used for caching and forwarding events; the FPGA-PowerPC dual-core processor comprises an FPGA and a PowerPC;
the FPGA is used for adding external communication processing, state information bit displacement, time scale receiving, state bit storage area updating, communication state of the monitoring unit of the detection circuit breaker, sub-module numbers and sub-module segment numbers;
the PowerPC is used for caching SOE events and sending the SOE events.
Furthermore, the lower computer monitoring equipment is connected with the upper computer PC equipment through a standard Ethernet interface, and uploads analog quantity information, SOE event information and a wave recording command to the upper computer PC equipment through different threads.
The invention also provides a monitoring method for the high-voltage direct-current circuit breaker, which is improved by the following steps:
the circuit breaker monitoring unit receives analog quantity information and a state information bit of the high-voltage direct-current circuit breaker, generates corresponding SOE event information according to the displacement condition of the state information bit, marks time marks on the analog quantity information and the SOE event information, stores the analog quantity information and the SOE event information into an event buffer area to wait for sending, uses the analog quantity information as remote measurement, and sends the state information bit as remote communication quantity to PC equipment of an upper computer through a standard Ethernet interface to be displayed;
the upper computer PC equipment is used for checking the state of the analog quantity information to be sent and the SOE event buffer area and sending the analog quantity information with time marks and the SOE event information according to the sequence of entering the storage area;
when the lower computer monitoring equipment receives a wave recording command of the upper computer PC equipment, a manual wave recording module is adopted to carry out wave recording operation on the analyzed SOE event information and voltage information and generate a wave recording file; a sensitive event (the sensitive event comprises the control of the protection unit to issue an instruction for displacement or the voltage and the rise of the sub-module capacitor) starts the automatic wave recording module to generate a wave recording file;
and converting the wave recording file into a TCP/IP protocol, and uploading the wave recording file to the PC equipment of the upper computer through the Ethernet.
Further: the circuit breaker monitoring unit receives analog quantity information and a state information bit of the high-voltage direct-current circuit breaker, generates corresponding SOE event information according to the displacement condition of the state information bit, marks time marks the analog quantity information and the SOE event information, stores the analog quantity information and the SOE event information into an event buffer area to wait for sending, sends the analog quantity information serving as remote measurement and the state information bit serving as remote communication quantity to an upper computer PC device through a standard Ethernet interface to be displayed, and the circuit breaker monitoring unit comprises:
the circuit breaker monitoring unit receives the mechanical switch capacitor voltage value information transmitted by the high-voltage direct-current circuit breaker control protection unit, the analog quantity information of OCT (optical coherence tomography) and the sub-module voltage information transmitted by the high-voltage direct-current circuit breaker valve control unit, analyzes and records the maximum value of the sub-module capacitor voltage, and transmits the analog quantity information serving as remote measurement to PC (personal computer) equipment of an upper computer for display through a standard Ethernet interface;
the circuit breaker monitoring unit receives control protection unit, mechanical switch and,
The state information bits of the valve control unit, the OCT and the submodule state information bits mark time marks for buffering the control protection unit, the mechanical switch, the valve control unit and the OCT; and sequentially comparing the state information bits with the state information bits received last time, checking the displacement condition, generating a corresponding SOE event if the state information bits are displaced, marking a time mark, storing the SOE event in an event buffer area for waiting to be sent, storing and recording new state information bits, and uploading state information of the high-voltage direct-current breaker control protection unit, the mechanical switch, the valve control unit, the OCT and the sub-module as remote traffic to an upper computer PC (personal computer) device for displaying through a standard Ethernet interface.
Further: the analog quantity information comprises mechanical switch capacitor voltage value information transmitted by a high-voltage direct-current breaker control protection unit, analog quantity information of a photocurrent transformer OCT (optical coherence tomography) and sub-module voltage information transmitted by a high-voltage direct-current breaker valve control unit;
the state information bits comprise a high-voltage direct-current breaker control protection unit, a mechanical switch, a valve control unit, OCT state information bits and submodule state information bits.
Further, the sub-module state information bits include:
the bypass switch triggers and allows;
closing of the bypass switch is refused;
the bypass switch is switched on;
a bypass switch is divided;
sub-module overvoltage faults;
the error rate exceeding fault of the valve control unit-submodule communication is avoided;
valve control unit- > submodule optical channel fault;
a drive failure;
early warning faults of the energy taking power supply;
the energy-taking power supply has a fault;
an energy-taking power supply output fault;
an energy-taking power input fault;
a residual voltage abnormal fault;
a run mode bit;
submodule- > valve control unit communication error rate exceeds standard fault;
submodule- > valve control unit optical channel fault.
Compared with the closest prior art, the technical scheme provided by the invention has the following excellent effects:
the high-voltage direct-current circuit breaker monitoring system provided by the invention can monitor the sub-module capacitor voltage in real time, calculate and display the maximum value of the sub-module capacitor voltage, and is convenient for an operator to analyze and record the dynamic voltage-sharing effect of the sub-module in each current turn-off process; event Sequence Of events (SOE for short) Event information, valve base control equipment SOE Event information and control protection unit SOE Event information Of each sub-module can be recorded; the device can record the sub-module capacitance voltage, the main branch current, the line current, the mechanical switch capacitance voltage and the like, and provides conditions for off-line analysis; the information of the on-off and running states of the circuit breaker is monitored in real time, so that the state information and the fault degree of all components of the circuit breaker and the fault information of the whole circuit breaker can be accurately acquired in time under the fault condition, and the analysis and the repair of a fault mechanism are facilitated; and the rapid recording and historical query of the SOE event are realized by adopting database recording.
According to the technical scheme provided by the invention, the state and the information of the circuit breaker can be monitored in real time, the fault information can be timely and accurately obtained in a fault state, the fault mechanism can be timely analyzed and then repaired, and the safe, reliable and stable operation of the circuit breaker is ensured, so that the requirements of the system on the circuit breaker device are met, and the requirements of the circuit breaker device on protection are also met.
The circuit breaker monitoring system provided by the invention adopts FPGA + PowerPC as a core processing device, the FPGA manages communication information transmitted by optical fibers, the PowerPC is used for caching data, converting a communication protocol and managing Ethernet, the working range is clear in labor division and matching, the responsibility is clear, and the design is simple and reliable;
the remote-measuring teletraffic uploading, SOE event uploading and wave-recording uploading of the invention are relatively independent through the uploading modes of different threads, thereby reducing the mutual influence, improving the processing efficiency and ensuring the real-time property of the circuit breaker monitoring system;
the SOE event generation method is accurate in SOE event generation, timely in reporting, reliable in storage and convenient in query, provides a platform for data offline analysis and fault analysis, and guarantees the operation reliability of the high-voltage direct-current circuit breaker.
Drawings
Fig. 1 is a connection diagram of the overall structure of a monitoring system of a high-voltage direct-current circuit breaker provided by the invention.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
The following description and the drawings sufficiently illustrate specific embodiments of the invention to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The scope of embodiments of the invention encompasses the full ambit of the claims, as well as all available equivalents of the claims. Embodiments of the invention may be referred to herein, individually or collectively, by the term "invention" merely for convenience and without intending to voluntarily limit the scope of this application to any single invention or inventive concept if more than one is in fact disclosed.
The high-voltage direct-current circuit breaker monitoring system provided by the invention can monitor the sub-module capacitor voltage in real time, calculate and display the maximum value of the sub-module capacitor voltage, and is convenient for an operator to analyze and record the dynamic voltage-sharing effect of the sub-module in each current turn-off process; event Sequence Of events (SOE for short) Event information, valve base control equipment SOE Event information and control protection unit SOE Event information Of each sub-module can be recorded; the device can record the sub-module capacitance voltage, the main branch current, the line current, the mechanical switch capacitance voltage and the like, and provides conditions for off-line analysis; the information of the on-off and running states of the circuit breaker is monitored in real time, the state information and the fault degree of all components of the circuit breaker and the fault information of the whole circuit breaker can be timely and accurately acquired under the fault condition, and the information is used for analyzing the fault mechanism and further repairing the fault mechanism; and the quick recording and historical query of the SOE event are realized by adopting database recording.
Example one
The general structure connecting line diagram of the high-voltage direct-current circuit breaker monitoring system provided by the invention is shown in fig. 1, and comprises an upper computer PC device and a lower computer monitoring device case which are connected through a switch; the lower computer monitoring equipment case comprises a breaker monitoring system case A and a breaker monitoring system case B; the case of the circuit breaker monitoring system A is connected with the case of the circuit breaker monitoring system B through a valve control unit; and the case of the circuit breaker monitoring system A and the case of the circuit breaker monitoring system B both receive the GPS for timing, and all information generated by the circuit breaker monitoring system takes the GPS clock as a standard clock source.
The high-voltage direct-current breaker comprises a submodule, a valve control unit, a mechanical switch, a control protection unit and a light current transformer OCT which are sequentially connected in parallel.
The sub-module and the valve control unit of the high-voltage direct-current breaker, the valve control unit and the control protection unit, the OCT and the breaker monitoring system and the mechanical switch and the control protection unit are connected by optical fibers, and the IEC60044-8 communication protocol is adopted to transmit information at the rate of 10 MBps.
The circuit breaker monitoring system receives the fast switch capacitor voltage value transmitted by the high-voltage direct-current circuit breaker control protection unit, the analog quantity information of the OCT and the sub-module voltage information transmitted by the high-voltage direct-current circuit breaker valve control unit, analyzes and records the maximum value of the sub-module capacitor voltage, and sends the analog quantity information serving as remote measurement to an upper computer through a standard Ethernet interface for displaying.
The circuit breaker monitoring system adopts a FPGA + PowerPC dual-core processor as a core processing device and is mainly used for caching and forwarding events, and the FPGA is mainly responsible for external communication processing, state bit displacement, time scale receiving, state storage area updating, detection of the communication state of the circuit breaker monitoring system, addition of sub-module numbers and sub-module segment numbers of the circuit breaker monitoring system; the PowerPC is responsible for event caching and sending events to the upper computer.
The circuit breaker monitoring system is provided with a manual wave recording module and an automatic wave recording module, when a wave recording command of an upper computer is received, the manual wave recording module performs wave recording operation on analyzed SOE information and voltage information, generates a wave recording file, converts the wave recording file into a TCP/IP protocol and uploads the TCP/IP protocol to the upper computer through the Ethernet. In addition, the generation of the sensitive event starts the automatic recording module.
A standard Ethernet interface is adopted between the lower computer monitoring equipment case and the upper computer PC equipment of the circuit breaker monitoring system, remote-measuring remote communication quantity uploading, SOE event uploading and wave recording uploading are carried out through different threads, and the remote-measuring remote-control communication quantity uploading, SOE event uploading and wave recording uploading are relatively independent, so that the mutual influence is reduced, the processing efficiency is improved, and the real-time performance of the circuit breaker monitoring system is ensured.
Example two
The present invention also provides a monitoring method using a monitoring system for a high voltage direct current circuit breaker, comprising the steps of:
(1) the monitoring system receives the state information bits and the sub-module state information bits of the control protection unit, the mechanical switch, the valve control unit and the OCT from the high-voltage direct-current breaker, marks the state information bits and the sub-module state information bits of the control protection unit, the mechanical switch, the valve control unit and the OCT for buffering,
(2) comparing the state information bit in the step (1) with each state information bit received last time in sequence, checking the displacement condition, generating a corresponding event if the state information bit is displaced, marking a time mark, entering an event buffer area for waiting to be sent, and storing and recording a new information state bit;
(3) the FPGA-PowerPC dual-core processor checks the state of the analog quantity to be sent and the SOE event buffer area, and sends the analog quantity with a time scale and SOE event information which are generated by the case processing to the PC equipment of an upper computer according to the sequence of entering the storage area of the FPGA-PowerPC dual-core processor, wherein the SOE event information data frame content comprises an event time scale and event content;
(4) and the state information of the high-voltage direct-current breaker control protection unit, the mechanical switch, the valve control unit, the OCT and the sub-module is used as remote communication quantity and is uploaded to an upper computer through a standard Ethernet interface for displaying.
(5) When a wave recording command of the upper computer is received, a manual wave recording module of the monitoring system is adopted to carry out wave recording operation on the analyzed SOE event information and the analyzed voltage information, and a wave recording file is generated; the sensitive event starts an automatic wave recording module to generate a wave recording file;
(6) and converting the wave recording file into a TCP/IP protocol, and uploading the wave recording file to PC equipment of an upper computer through the Ethernet.
Wherein: the status information of the sub-modules monitored by the circuit breaker monitoring system is as follows:
the bypass switch triggers and allows;
closing of the bypass switch is refused;
the bypass switch is switched on;
a bypass switch branch;
sub-module overvoltage faults;
the error rate exceeding fault of the valve control unit-submodule communication is avoided;
valve control unit- > submodule optical channel fault;
a drive failure;
early warning faults of the energy taking power supply;
the energy-taking power supply has a fault;
an energy-taking power supply output fault;
an energy-taking power input fault;
a residual voltage abnormal fault;
a run mode bit;
submodule- > valve control unit communication error rate exceeds standard fault;
submodule- > valve control unit optical channel fault.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application 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, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. 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.
Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can make modifications and equivalents to the embodiments of the present invention without departing from the spirit and scope of the present invention, which is set forth in the claims of the present application.
Claims (9)
1. A monitoring method for a high voltage direct current circuit breaker, characterized by:
the circuit breaker monitoring unit receives analog quantity information and a state information bit of the high-voltage direct-current circuit breaker, generates corresponding SOE event information according to the displacement condition of the state information bit, marks the analog quantity information and the SOE event information, stores the analog quantity information and the SOE event information into an event buffer area to wait for sending, uses the analog quantity information as remote measurement, and sends the state information bit as remote communication quantity to PC equipment of an upper computer through a standard Ethernet interface to be displayed;
the upper computer PC equipment is used for checking the state of analog quantity information to be sent and an SOE event buffer area and sending the analog quantity information with a time mark and the SOE event information according to the sequence of entering the storage area;
when the lower computer monitoring equipment receives a wave recording command of the upper computer PC equipment, a manual wave recording module is adopted to carry out wave recording operation on the analyzed SOE event information and voltage information and generate a wave recording file; the sensitive event starts an automatic wave recording module to generate a wave recording file;
converting the wave recording file into a TCP/IP protocol, and uploading the wave recording file to the PC equipment of the upper computer through the Ethernet;
the circuit breaker monitoring unit receives analog quantity information and a state information bit of the high-voltage direct-current circuit breaker, generates corresponding SOE event information according to the displacement condition of the state information bit, marks time marks the analog quantity information and the SOE event information, stores the analog quantity information and the SOE event information into an event buffer area to wait for sending, sends the analog quantity information serving as remote measurement and the state information bit serving as remote communication quantity to an upper computer PC device through a standard Ethernet interface to be displayed, and the circuit breaker monitoring unit comprises:
the circuit breaker monitoring unit receives the mechanical switch capacitor voltage value information transmitted by the high-voltage direct-current circuit breaker control protection unit, the analog quantity information of OCT (optical coherence tomography) and the sub-module voltage information transmitted by the high-voltage direct-current circuit breaker valve control unit, analyzes and records the maximum value of the sub-module capacitor voltage, and transmits the analog quantity information serving as remote measurement to PC (personal computer) equipment of an upper computer for display through a standard Ethernet interface;
the circuit breaker monitoring unit receives control protection unit, mechanical switch and,
The state information bits of the valve control unit, the OCT and the submodule state information bits mark time marks for buffering the control protection unit, the mechanical switch, the valve control unit and the OCT; and sequentially comparing the state information bits with the state information bits received last time, checking the displacement condition, generating a corresponding SOE event if the state information bits are displaced, marking a time mark, storing the SOE event in an event buffer area for waiting to be sent, storing and recording new state information bits, and uploading state information of the high-voltage direct-current breaker control protection unit, the mechanical switch, the valve control unit, the OCT and the sub-module as remote traffic to an upper computer PC (personal computer) device for displaying through a standard Ethernet interface.
2. The monitoring method of claim 1, wherein: the analog quantity information comprises mechanical switch capacitor voltage value information transmitted by a high-voltage direct-current breaker control protection unit, analog quantity information of a photocurrent transformer OCT (optical coherence tomography) and sub-module voltage information transmitted by a high-voltage direct-current breaker valve control unit;
the state information bits comprise a high-voltage direct-current breaker control protection unit, a mechanical switch, a valve control unit, OCT state information bits and submodule state information bits.
3. The monitoring method of claim 2, wherein the sub-module state information bits include:
the bypass switch triggers and allows;
closing of the bypass switch is refused;
the bypass switch is switched on;
a bypass switch is divided;
sub-module overvoltage faults;
the error rate exceeding fault is communicated from the valve control unit to the submodule;
the failure of the optical channel from the valve control unit to the submodule;
a drive failure;
early warning faults of the energy taking power supply;
the energy-taking power supply has a fault;
an energy-taking power supply output fault;
an energy-taking power input fault;
a residual voltage abnormal fault;
a run mode bit;
the submodule transmits the communication error rate to the valve control unit to exceed the standard;
sub-module to valve control unit optical channel failure.
4. A monitoring system of a high voltage direct current circuit breaker implementing the monitoring method of the high voltage direct current circuit breaker of any one of claims 1 to 3, comprising an upper computer PC device and a lower computer monitoring device, the lower computer monitoring device being connected to the high voltage direct current circuit breaker, characterized in that the lower computer monitoring device comprises at least one circuit breaker monitoring unit; two circuit breaker monitoring units in the circuit breaker monitoring units are connected through a valve control unit of the high-voltage direct-current circuit breaker;
the circuit breaker monitoring unit is used for receiving analog quantity information and a state information bit of the high-voltage direct-current circuit breaker, generating corresponding SOE event information according to the displacement condition of the state information bit, marking time marks on the analog quantity information and the SOE event information, storing the analog quantity information and the SOE event information into an event buffer area for waiting to be sent, sending the analog quantity information serving as remote measurement and the state information bit serving as remote communication quantity to PC equipment of an upper computer through a standard Ethernet interface for displaying;
and the upper computer PC equipment is used for checking the analog quantity information to be sent and the state of the SOE event buffer area, and sending the analog quantity information with a time scale and the SOE event information according to the sequence of entering the storage area.
5. The monitoring system of the HVDC breaker of claim 4, wherein the analog information comprises voltage value information of a mechanical switch capacitor transmitted by the HVDC breaker control protection unit, analog information of a photocurrent transformer OCT, and sub-module voltage information transmitted by the HVDC breaker valve control unit;
the state information bits comprise a high-voltage direct-current breaker control protection unit, a mechanical switch, a valve control unit, OCT state information bits and submodule state information bits.
6. The monitoring system of the hvdc breaker of claim 4, wherein said breaker monitoring unit comprises a manual recording module and an automatic recording module; when receiving a wave recording command of PC equipment of an upper computer, the manual wave recording module performs wave recording operation on the analyzed SOE event and the sub-module voltage information of the high-voltage direct-current breaker, generates a wave recording file, converts the wave recording file into a TCP/IP protocol and transmits the TCP/IP protocol to the PC equipment of the upper computer through the Ethernet;
the automatic wave recording module is used for automatically recording waves when the sensitive events are generated.
7. The monitoring system of the high voltage direct current circuit breaker of claim 4, characterized in that the circuit breaker monitoring unit comprises a GPS clock; and the at least one circuit breaker monitoring unit receives the time tick information of the GPS clock, and the GPS clock is used as a standard clock source.
8. The monitoring system of the high-voltage direct current circuit breaker of claim 4, wherein the upper computer PC device adopts an FPGA-PowerPC dual-core processor for caching and forwarding events; the FPGA-PowerPC dual-core processor comprises an FPGA and a PowerPC;
the FPGA is used for processing external communication, shifting a state information bit, receiving a time mark, updating a state bit storage area, detecting the communication state of the circuit breaker monitoring unit, and adding a sub-module number and a sub-module segment number;
the PowerPC is used for caching SOE events and sending the SOE events.
9. The monitoring system of the high-voltage direct current circuit breaker of claim 4, wherein the lower computer monitoring device is connected with the upper computer PC device through a standard Ethernet interface, and the lower computer monitoring device uploads analog quantity information, SOE event information and a wave recording command to the upper computer PC device through different threads.
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