WO2019041933A1

WO2019041933A1 - Monitoring system, monitoring method and storage medium

Info

Publication number: WO2019041933A1
Application number: PCT/CN2018/089378
Authority: WO
Inventors: 李霄; 谢敏华; 路建良; 关兆亮; 梁伟; 贺之渊; 李强
Original assignee: 全球能源互联网研究院有限公司
Priority date: 2017-08-30
Filing date: 2018-05-31
Publication date: 2019-03-07
Also published as: CN107565689B; CN107565689A

Abstract

Disclosed are a monitoring system, a monitoring method, and a computer storage medium, wherein the monitoring system comprises: a first valve base monitoring unit (11), which is in communication connection with a first valve base control unit (14) and is used for monitoring an operating state of the first valve base control unit; a second valve base monitoring unit (12), which is in communication connection with a second valve base control unit (15) and is used for monitoring an operating state of the second valve base control unit; and a monitoring control unit (13), which is used for determining a working valve base control unit according to the operating state of the first valve base control unit and/or the second valve base control unit, wherein whether a converter station has a shutdown fault is determined according to converter station data collected by the working valve base control unit; when the converter station has a shutdown fault, whether the converter station has a condition for being put into operation again is determined; and when it is determined that the converter station has a condition for being put into operation again, the working valve base control unit is controlled such that same resets. By using the monitoring system, the problem of the current operations for resetting a valve base control device being complicated is solved.

Description

Monitoring system and monitoring method, storage medium

Cross-reference to related applications

The present application is based on a Chinese patent application filed on Jan. 30, 2017, filed on-

Technical field

The present application relates to the field of flexible direct current transmission, and in particular to a monitoring system, a monitoring method, and a computer storage medium.

Background technique

The converter valve is an important electrical device for completing power exchange and AC/DC conversion, and is a key device in the flexible DC transmission system. Based on the high-voltage and large-capacity flexible direct current transmission technology of modular multi-level converter valve (MMC), the bridge arm of the converter valve usually consists of hundreds of sub-modules, each of which contains insulated gate bipolar transistors (IGBT) and drivers. , capacitors, thyristors, bypass switches, energy-receiving power supplies, sub-module control boards, etc. In order to realize the functions of power exchange and AC/DC conversion, the valve-based control device of the converter valve performs switching control on the sub-module according to the voltage level of the sub-module and the system power demand, thereby realizing the functions of rectification and inverter. Due to the large number of converter valve sub-modules and their components, individual sub-modules may malfunction during long-term operation. At this time, the sub-module control board uploads the fault information to the valve-based control device according to the agreed protocol. The control device takes different countermeasures according to the fault. When the converter valve is stopped due to the fault, the corresponding fault bit in the remote signal of the valve-based control device will indicate the fault, and before the converter valve is put back into operation, it needs to be The valve-based control device is reset to restore the remote signal to the initial state, and the existing valve-based control device needs manual manual reset operation, which is cumbersome to operate.

Summary of the invention

The embodiment of the present application provides a monitoring system, a monitoring method, and a computer storage medium, which can at least solve the problem that the reset operation of the existing valve-based control device is cumbersome.

In view of this, the embodiment of the present application provides a monitoring system, where the monitoring system includes a first valve base control unit and a second valve base control unit, and the system further includes:

a first valve base monitoring unit connected to the first valve base control unit for monitoring an operating state of the first valve base control unit;

a second valve base monitoring unit connected to the second valve base control unit for monitoring an operating state of the second valve base control unit;

Monitoring control unit for:

Determining a working valve base control unit according to an operating state of the first valve base control unit and/or the second valve base control unit;

Determining whether the converter station has a shutdown fault according to the data in the converter station collected by the working valve base control unit;

When there is a shutdown failure at the converter station, it is judged whether the converter station has the conditions for re-operation;

When it is determined that the converter station has the condition of recommissioning, the valve base control unit that controls the operation is reset.

In an optional aspect, the first valve base monitoring unit and the second valve base monitoring unit respectively comprise a plurality of interfaces, and the first valve base monitoring unit and the second valve base monitoring unit pass through At least one of the plurality of interfaces is coupled to the first valve base control unit and the second valve base control unit.

In an optional solution, the first valve base monitoring unit is further configured to: record data in the converter station collected by the first valve base control unit to form a recorded file;

The second valve base monitoring unit is further configured to: record data in the converter station collected by the second valve base control unit to form a recorded file;

The recording wave can be an automatic recording or a manual recording.

In an optional solution, the first valve base monitoring unit and the second valve base monitoring unit are configured to collect the first valve base control unit and the second valve base control unit by using a plurality of independent threads that are operated. Types of data are sent to the monitoring control unit;

Each independent thread carries one type of data.

In an optional solution, the first valve base monitoring unit is configured to keep the time information of the converter station data collected by the first valve base control unit consistent with or nearly identical to the clock information in the converter station;

The second valve base monitoring unit is configured to keep the time information of the converter station data collected by the second valve base control unit consistent with or close to the clock information in the converter station.

In an optional solution, the monitoring control unit is further configured to convert the remote signaling information collected by the first valve base control unit and the second valve base control unit into an event sequence recording SOE event. storage.

In an optional aspect, the system further includes a terminal control unit coupled to the monitoring control unit for receiving and displaying SOE information.

In an optional solution, the terminal control unit is further configured to: send, to the monitoring control unit, a query for querying an operating state of the first valve base control unit and/or the second valve base control unit Command information, or controlling the first valve base monitoring unit and the second valve base monitoring unit to perform recording.

In an optional aspect, the system further includes a terminal control unit for displaying the recorded file.

Embodiments of the present invention also provide a monitoring method, the method being applied to a monitoring system, the monitoring system including at least a first valve base control unit and a second valve base control unit;

The method includes:

Determining a working valve base control unit according to an operating state of the first valve base control unit and/or the second valve base control unit, wherein the first valve base control unit and the second valve base control unit are used for Collecting data in the converter station;

A monitoring system and monitoring method provided by an embodiment of the present invention, the computer storage medium, the system comprising a first valve base control unit and a second valve base control unit, monitored by a first valve base in communication with the first valve base control unit The unit monitors an operating state of the first valve base control unit, and a second valve base monitoring unit communicably coupled to the second valve base control unit monitors an operating state of the second valve base control unit, and further includes a monitoring control unit Determining the working valve base control unit according to the operating state of the first valve base control unit or the second valve base control unit; determining whether the converter station is out of service according to the data of the converter station collected by the working valve base control unit Failure; when there is a shutdown failure at the converter station, when the converter station has a shutdown failure, it is judged whether the converter station has the conditions for re-operation, and when it is determined that the converter station has the conditions for re-operation, the control station The reset of the valve-based control unit of the work solves the problem that the reset operation of the existing valve-based control device is cumbersome.

DRAWINGS

In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings to be used in the specific embodiments or the description of the prior art will be briefly described below, and obviously, the attached in the following description The drawings are some embodiments of the present invention, and other drawings may be obtained from those of ordinary skill in the art without departing from the scope of the invention.

1 is a schematic structural diagram of a monitoring system according to an embodiment of the present invention;

FIG. 2 is a flowchart of an implementation of a monitoring method according to an embodiment of the present invention.

Detailed ways

The technical solutions of the present invention will be clearly and completely described in the following with reference to the accompanying drawings. It is obvious that the described embodiments are a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

Embodiments of the present invention provide a monitoring system that includes at least a first valve base control unit 14 and a second valve base control unit 15 that are redundantly configured. As shown in FIG. 1, the system further includes a first valve base monitoring unit 11, a second valve base monitoring unit 12, and a monitoring control unit 13 that are redundantly arranged.

among them,

The first valve base monitoring unit 11 is communicatively coupled to the first valve base control unit 14 for monitoring an operating state of the first valve base control unit 14.

The second valve base monitoring unit 12 is communicatively coupled to the second valve base control unit 15 for monitoring an operating state of the second valve base control unit 15.

The monitoring control unit 13 can be integrated in the first valve base monitoring unit or the second valve base monitoring unit in order to reduce the system volume.

Considering that the monitoring system monitors the data in the converter station, the first valve base control unit 14 and the second valve base control unit 15 in this embodiment collect data in the converter station, and the first valve base monitors The unit 11 determines whether the first valve base control unit 14 is in a normal operating state or in an abnormal operating state by processing, for example, data in the converter station. Similarly, the second valve base monitoring unit 12 determines whether the second valve base control unit 15 is in a normal operating state or in an abnormal operating state by processing data such as identification in the converter station.

Those skilled in the art will appreciate that the converter station includes a converter valve and also includes other equipment than the converter valve, such as a transformer, a knife gate, and the like. The data in the converter station is of various types of data, such as the current value of each bridge arm of the converter valve, the voltage value, the switching value of the knife gate, the current value of the transformer, and the voltage value. It can be understood that the data in the converter station includes but is not limited to the above-mentioned ones, and includes any other reasonable data that can be conceived.

Here, the meaning of the redundant configuration can be understood as follows: In the monitoring system provided by the embodiment of the present invention, two sets of sub-monitoring systems are provided, and the functions of the two sets of sub-monitoring systems are the same. One of the sub-monitoring systems can be used as the primary monitoring system and the other sub-monitoring system as the secondary monitoring system. When the primary monitoring system fails, the process of switching to the secondary monitoring system performs steps 21-24. Each set of sub-monitoring systems includes a valve-based monitoring unit, a valve-based control unit, a monitoring control unit, and a terminal control unit.

An embodiment of the present invention provides a monitoring method. As shown in FIG. 2, the method includes:

S21, determining a working valve base control unit according to an operating state of the first valve base control unit or the second valve base control unit;

Here, the valve-based control unit in the normal working state is determined from the two valve-based control units, and the sub-monitoring system in which the determined valve-based control unit is located is considered to be the main monitoring system. It can also be understood that the primary monitoring system is determined from two sets of sub-monitoring systems. The main monitoring system can be considered as a system in a normal working state in two sets of sub-monitoring systems; if both sets of sub-monitoring systems are in a normal working state, any set of sub-monitoring systems can be designated as the main monitoring system. The purpose of setting up two sets of sub-monitoring systems for the converter station is to pass one of the sub-monitoring systems, such as the slave monitoring system, when one of the sub-monitoring systems fails.

The master-slave monitoring system can perform steps 21-24 simultaneously to achieve seamless switching from the primary monitoring system to the secondary monitoring system in the event of a failure of the primary monitoring system.

S22. Determine, according to data in the converter station collected by the working valve base control unit, whether the converter station has a shutdown fault;

When the converter station does not have a shutdown failure, continue with this step (step 22);

When the converter station has a shutdown failure, step S23 is performed;

Here, in the actual application, when the data in the partial converter station is abnormal, the converter station does not cause a failure, and when the data in the partial converter station is abnormal, the fault occurring in the converter station will be caused. In this embodiment, the two types of data are identified in advance, and the data in the converter station collected by the valve base control unit is recognized as if there is abnormal data and the data belongs to data that can cause the converter station to malfunction. When it is determined that the converter station has failed, the fault will cause the converter station to stop running.

S23, determining whether the converter station has the condition for re-operation;

When it is determined that the converter station has the condition of re-operation, step S24 is performed;

Wherein, the condition that the converter station is re-commissioned may be: by monitoring the change of the electric energy value of the converter station, for example, the current of the converter station suddenly rises from the shutdown current to 0 to the normal current value, and the commutation can be determined. The station has the conditions for re-operation. The condition that the converter station is re-commissioned may also be: the disappearance of the fault identification signal, such as the fault identification signal is changed from red (red for fault) to green (green for fault disappears), or high-voltage when fault identification information Flat (high level represents fault) becomes low (low level means the fault disappears). Of course, any reasonable condition in the actual application can be used as a condition for judging that the converter station has been put into operation, and this will not be described one by one.

S24, the valve base control unit that controls the operation is reset.

Here, the valve base control unit in the main monitoring system of the two monitoring systems is reset. The monitoring control unit 13 in the main monitoring system may issue a reset command to the valve base control unit in the main monitoring system, and the valve base control unit in the main monitoring system receives the reset command to set the relevant data in the valve base control unit to Initial value. The relevant data includes data required for the valve-based control unit to start and operate itself, and data collected from the converter station.

It should be understood that the system that performs the steps 21-24 is the monitoring system provided by the embodiment of the present invention, and specifically may be the monitoring control unit in the monitoring system.

The monitoring system provided by the embodiment of the present invention monitors an operating state of the first valve-based control unit through a first valve-based monitoring unit communicably connected to the first valve-based control unit, and is communicably connected to the second valve-based control unit. a second valve base monitoring unit monitors an operating state of the second valve base control unit, and the monitoring control unit determines a working valve base control unit according to an operating state of the first valve base control unit or the second valve base control unit; The data in the converter station collected by the valve-based control unit determines whether the converter station has a shutdown fault; when the converter station has a shutdown fault, it is judged whether the converter station has the condition of re-operation, when it is judged as When the converter station has the condition of re-commissioning, the valve-base control unit of the control work is reset, which solves the problem that the existing valve-based control device (valve-based control unit) needs more manual operations to be reset, and the manual operation is cumbersome. In this embodiment, the automatic reset of the valve base control device is realized, and the problem that the reset operation is cumbersome is avoided.

Preferably, the first valve base monitoring unit 11 and the second valve base monitoring unit 12 respectively comprise a plurality of interfaces. Wherein the first valve base monitoring unit 11 is connected to the first valve base control unit 14 through at least one of the plurality of interfaces; the second valve base monitoring unit 12 passes through the plurality of interfaces At least one of the interfaces is connected to the second valve base control unit 15. Here, a connection between a valve base monitoring unit and a valve base control unit is typically implemented using an interface. Here, the purpose of the plurality of interfaces provided is to use the number of valve-based monitoring units and valve-based control units that can be used later, and the operating states of the plurality of valve-based control units can be monitored as needed. The plurality of interfaces can be regarded as a backup interface (redundant interface).

Preferably, the first valve base monitoring unit 11 and the second valve base monitoring unit 12 can each run a plurality of independent threads, and the first valve base control unit 14 and the second valve base are controlled by a plurality of independent threads. The plurality of types of data collected by the control unit 15 are sent to the monitoring control unit 13. Each individual thread carries one type of data. The various types of data include, but are not limited to, remote signaling, telemetry, and SOE (Sequence Of Event) information in the power system. Here, one of the benefits of the valve-based monitoring unit (including the first valve-based monitoring unit 11 and the second valve-based monitoring unit 12) being able to run a plurality of independent threads is that multiple threads of each of the independent threads are used to achieve multiple The transmission of one type of data in the type data, that is, one thread is responsible for the transmission of one type of data, and can guarantee multiple types of data compared with the transmission of all types of data by using single thread in the related art. The independence between transmissions reduces the interaction between information transmissions. Each thread is responsible for one type of data, which enables the data to be synchronized to the maximum extent between different threads, ensuring the real-time performance of the monitoring system.

Preferably, the first valve base monitoring unit 11 and the second valve base monitoring unit 12 include a GPS clock module for implementing the commutation collected by the first valve base control unit 14 and the second valve base control unit 15. Synchronization between multiple data in the station, specifically when the SOE information is timed (in particular, accurate timing can be performed), that is, the timestamp information in the SOE information is consistent with the clock information in the converter station or Close to the same. That is, the first valve base monitoring unit 11 is configured to keep the time information of the converter station data collected by the first valve base control unit 14 consistent with or nearly coincide with the clock information in the converter station; the second valve base The monitoring unit 12 is configured to keep the time information of the converter station data collected by the second valve base control unit 15 consistent or close to the clock information in the converter station.

It can be understood that the synchronization is to compare the data collected by the valve base control unit (including the first valve base control unit 14 and the second valve base control unit 15) so that the data and the clock information in the converter station Consistent or nearly consistent. The close agreement can be considered that the difference between the clock information of the collected data and the clock information in the converter station is within a tolerable range, such as a difference of 10 ns (nanoseconds).

Preferably, the monitoring control unit 13 is further configured to convert the remote signaling information collected by the first valve base control unit and/or the second valve base control unit in an operating state into SOE event information and store The buffer is sent to the terminal control unit 16 as needed. For the specific process of converting the remote information into the SOE event, please refer to the existing related description, which is not described here.

Preferably, the monitoring system further comprises a terminal control unit 16 connected to the monitoring control unit 13 for receiving and displaying SOE information. The terminal control unit 16 can be used as a display device for displaying data in the collected converter station. The terminal control unit 16 can also be used as a control device for transmitting a query to the monitoring control unit 13 for querying the operating state of the first valve-based control unit 14 and/or the second valve-based control unit 15. The command information or the first valve base monitoring unit 11 and the second valve base monitoring unit 12 are controlled to perform recording. Considering that the terminal control unit 16 can be used as a display device as a display device, that is, it has two functions of a display function and a control function. Fully considering the use requirements of the field operation and maintenance personnel, the terminal control unit 16 adopts a structure in which the database and the server are separated, wherein the database is used for storing data to be displayed, and the server is configured to receive an instruction input by the user such as a query instruction or a recording instruction. For the display function of the terminal control unit 16, the database for storing the data to be displayed is set to run in the Linux system. Because the Linux system itself has operational stability, a large amount of data is run in the Linux system, which can improve the stability of the data operation. For the control function of the terminal control unit 16, it is set to run in the Windows system, and the user can input the query command or the oscillating command in the user interface of the Windows system, because the user interface of the Windows system is usually user-friendly, which can greatly reduce the user's The difficulty of use.

Preferably, the first valve base monitoring unit 11 and the second valve base monitoring unit 12 respectively have a magnetic recording function, and the magnetic recording function includes manual recording and automatic recording. When the first valve-based monitoring unit 11 and the second valve-based monitoring unit 12 turn on the automatic recording function, the automatic recording can be performed according to a predetermined time or the electric energy value of the position is monitored according to a preset priority. When the predetermined electric energy value changes, the data in the converter station collected by the first valve base control unit 14 and the second valve base control unit 15 is automatically recorded to obtain a recorded file. The user inputs a oscillography command through the Windows user interface of the terminal control unit 16, and the oscillating command is sent to the first valve base monitoring unit 11 and the second valve base monitoring unit 12 through the terminal control unit 16 to make the first valve base monitoring unit 11. The second valve base monitoring unit 12 performs a recording operation.

The first valve base monitoring unit 11 and the second valve base monitoring unit 12 perform a recording operation on the data of the remote signal and the telemetry in the converter station based on the oscillating command, and generate an IEEE standard COMTRADE format recording file. And the recorded wave file is converted into a TCP/IP protocol and uploaded to the terminal control unit 16 via Ethernet. Wherein, the oscillating process can record important data in the converter station, for example, the capacitance of the converter valve in the converter station, the voltage, the bridge arm current of the converter valve arm, the bridge arm voltage, and The important switch quantity such as the opening and closing of the knife switch and the opening and closing of the switch is recorded, and can be saved in the database of the terminal control unit 16 after being uploaded to the terminal control unit 16, providing historical data for offline analysis of the valve failure, facilitating fault analysis and repair.

It should be understood by those skilled in the art that the first valve base control unit 14 and/or the second valve base control unit 15 as a specific implementation form of the valve base control device can not only collect data in the converter station, but also Control functions other than collecting data can be performed, such as generating control signals that are used at least to control the opening and closing of power electronics in the converter station, or control electronics such as diodes, transistors, FETs (MOS) Turn on and off, etc. That is, the first valve base control unit 14 and/or the second valve base control unit 15 have at least the following functions: a function of collecting data in the converter station and a function of controlling the power electronic device. The monitoring system provided by the embodiment of the present invention monitors the operating state of the first valve-based control unit through a first valve-based monitoring unit communicably connected to the first valve-based control unit, and communicates with the second valve-based control unit. The two valve base monitoring unit monitors an operating state of the second valve base control unit, and the monitoring control unit is configured to determine a working valve base control unit according to an operating state of the first valve base control unit and/or the second valve base control unit According to the data in the converter station collected by the valve-based control unit of the work, it is judged whether the converter station has a shutdown fault; when the converter station has a shutdown fault, it is judged whether the converter station has the condition of re-operation. When it is determined that the converter station has the condition of re-commissioning, the valve-base control unit of the control work is reset, which solves the problem that the existing valve-based control device (valve-based control unit) needs more manual operations to be reset, and the manual operation is performed. More complicated, the embodiment realizes automatic resetting of the valve base control device, thereby avoiding the problem of cumbersome reset operation. At the same time, the embodiment adopts at least one sub-monitoring system of the two sets of sub-monitoring systems to implement functions such as monitoring, recording, and querying data in the converter station, and solving the multi-channel large-scale data of the flexible trans-conversion station needs to be simultaneously performed. Real-time monitoring, recording, forwarding, remote control requirements, provide detailed technical information support for operation and maintenance personnel; valve-based control unit as a specific implementation of a valve-based control device, can achieve equipment reset, manual and / or automatic recording The requirement of switching the valve-controlled operation mode (reset) provides a simple and easy operation mode for the operation and maintenance personnel, which greatly simplifies the operation of the operation and maintenance personnel, can significantly reduce the workload of the operation and maintenance personnel and greatly enhance the operation and maintenance personnel. Use experience. Embodiments of the present invention also provide a monitoring system including: at least one processor and a memory communicatively coupled to the at least one processor, wherein the memory stores instructions executable by the at least one processor to The following method is implemented when the at least one processor is executed:

Determining a working valve base control unit according to an operating state of the first valve base control unit and/or the second valve base control unit in the monitoring system; wherein the first valve base control unit and the second valve base control The unit is used to collect data in the converter station;

When the converter station has a shutdown failure, it is judged whether the converter station is re-commissioned;

When the converter station is re-commissioned, the valve-based control unit that controls the operation is reset.

The embodiment of the present invention further provides a computer storage medium, where the storage medium stores executable instructions, and the executable instructions are executed to perform at least the following steps:

It is apparent that the above-described embodiments are merely illustrative of the examples, and are not intended to limit the embodiments. Other variations or modifications of the various forms may be made by those skilled in the art in light of the above description. There is no need and no way to exhaust all of the implementations. Obvious changes or variations resulting therefrom are still within the scope of the invention.

Industrial applicability

In an embodiment of the invention, the first valve-based monitoring unit communicatively coupled to the first valve-based control unit monitors an operating state of the first valve-based control unit, and a second valve communicatively coupled to the second valve-based control unit The base monitoring unit monitors an operating state of the second valve base control unit, and further includes a monitoring control unit configured to determine a working valve base control unit according to an operating state of the first valve base control unit or the second valve base control unit; According to the data of the converter station collected by the valve-based control unit of the work, it is judged whether the converter station has a shutdown fault; when the converter station has a shutdown fault, when the converter station has a shutdown fault, it is judged whether the converter station is With the condition of re-commissioning, when it is determined that the converter station has the condition of re-commissioning, the valve-based control unit that controls the operation is reset, which solves the problem that the reset operation of the existing valve-based control device is cumbersome.

Claims

A monitoring system includes a first valve base control unit and a second valve base control unit, wherein the system further comprises:

a first valve base monitoring unit connected to the first valve base control unit for monitoring an operating state of the first valve base control unit;

a second valve base monitoring unit connected to the second valve base control unit for monitoring an operating state of the second valve base control unit;

Monitoring control unit for:

Determining a working valve base control unit according to an operating state of the first valve base control unit and/or the second valve base control unit;

Determining whether the converter station has a shutdown fault according to the data in the converter station collected by the working valve base control unit;

When there is a shutdown failure at the converter station, it is judged whether the converter station has the conditions for re-operation;

When it is determined that the converter station has the condition of recommissioning, the valve base control unit that controls the operation is reset.
The system of claim 1 wherein said first valve based monitoring unit and said second valve based monitoring unit each comprise a plurality of interfaces, said first valve based monitoring unit, said second valve The base monitoring unit is coupled to the first valve base control unit and the second valve base control unit via at least one of the plurality of interfaces.
The system according to claim 1, wherein the first valve base monitoring unit is further configured to: record data in the converter station collected by the first valve base control unit to form a recorded file;

The second valve base monitoring unit is further configured to: record data in the converter station collected by the second valve base control unit to form a recorded file;

The recording wave can be an automatic recording or a manual recording.
The system according to claim 1, wherein said first valve base monitoring unit and said second valve base monitoring unit are configured to control the first valve base control unit and the second valve base by a plurality of independent threads that are operated The plurality of types of data collected by the unit are sent to the monitoring control unit;

Each independent thread carries one type of data.
The system according to claim 1, wherein said first valve base monitoring unit is configured to maintain time information of the converter station data collected by the first valve base control unit and clock information in the converter station Consistent or nearly identical;

The second valve base monitoring unit is configured to keep the time information of the converter station data collected by the second valve base control unit consistent with or close to the clock information in the converter station.
The system according to claim 1, wherein the monitoring control unit is further configured to convert the remote signal information collected by the first valve base control unit and the second valve base control unit into an event Record SOE events sequentially and store them.
The system of claim 6 wherein said system further comprises a terminal control unit coupled to said monitoring control unit for receiving and displaying SOE information.
The system according to claim 7, wherein the terminal control unit is further configured to: send, to the monitoring control unit, a query for querying the first valve base control unit and/or the second valve base control Querying instruction information of the unit operating state, or controlling the first valve base monitoring unit and the second valve base monitoring unit to perform recording.
The system of claim 3 wherein said system further comprises a terminal control unit for displaying said recorded file.
A monitoring method, characterized in that the method is applied to a monitoring system, the monitoring system comprising at least a first valve base control unit and a second valve base control unit;

The method includes:

Determining a working valve base control unit according to an operating state of the first valve base control unit and/or the second valve base control unit, wherein the first valve base control unit and the second valve base control unit are at least used Collecting data in the converter station;

Determining whether the converter station has a shutdown fault according to the data in the converter station collected by the working valve base control unit;

When there is a shutdown failure at the converter station, it is judged whether the converter station has the conditions for re-operation;

When it is determined that the converter station has the condition of recommissioning, the valve base control unit that controls the operation is reset.
A computer storage medium storing executable instructions, wherein the executable instructions are executed to perform the following operations:

Determining a working valve base control unit according to an operating state of the first valve base control unit and/or the second valve base control unit, wherein the first valve base control unit and the second valve base control unit are used for at least acquisition The data in the converter station;

Determining whether the converter station has a shutdown fault according to the data in the converter station collected by the working valve base control unit;

When there is a shutdown failure at the converter station, it is judged whether the converter station has the conditions for re-operation;

When it is determined that the converter station has the condition of recommissioning, the valve base control unit that controls the operation is reset.