CN113676862A - Converter valve safety monitoring system and method - Google Patents
Converter valve safety monitoring system and method Download PDFInfo
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- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/38—Services specially adapted for particular environments, situations or purposes for collecting sensor information
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Abstract
The application provides a converter valve safety monitoring system and method, and the system comprises: the system comprises a plurality of wireless sensors, a gateway and a monitoring platform; each wireless sensor is used for respectively acquiring monitoring information of the corresponding converter valve assembly and sending the monitoring information to the gateway; the gateway is used for forwarding the monitoring information to the monitoring platform; and the monitoring platform is used for determining the safety monitoring result of the converter valve according to the monitoring information. According to the system provided by the scheme, the wireless sensor arranged on the converter valve is utilized to acquire the monitoring information of the converter valve in real time, and remote data transmission is carried out through the gateway, so that the remote real-time monitoring of the converter valve is realized, the real-time performance of a safety monitoring result is improved, and a foundation is laid for improving the safety of the converter valve.
Description
Technical Field
The application relates to the technical field of online monitoring of power transmission and transformation equipment, in particular to a safety monitoring system and method for a converter valve.
Background
At present, the ultra-high voltage direct current transmission technology is the most economical and effective means for solving the problem of large-capacity and long-distance electric energy transmission. The converter valve is a core device in the extra-high voltage direct current converter station, once the converter valve device fails, not only can direct current transmission be stopped, but also fire of the converter valve or a valve hall can be caused under severe conditions, so that a serious safety accident is caused.
In the prior art, the converter valve is regularly shut down for maintenance, usually by a professional operator.
However, the manual detection of the converter valve cannot find potential safety hazards in time, which is not beneficial to ensuring the safety of the converter valve.
Disclosure of Invention
The application provides a converter valve safety monitoring system and a converter valve safety monitoring method, which aim to overcome the defects of low real-time performance and the like of converter valve safety monitoring in the prior art.
The present application provides in a first aspect a converter valve safety monitoring system, comprising: the system comprises a plurality of wireless sensors, a gateway and a monitoring platform;
each wireless sensor is used for respectively acquiring monitoring information of the corresponding converter valve assembly and sending the monitoring information to a gateway;
the gateway is used for forwarding the monitoring information to a monitoring platform;
and the monitoring platform is used for determining the safety monitoring result of the converter valve according to the monitoring information.
Optionally, the wireless sensor is a wireless sensor without a relay function;
each of the wireless sensors is in direct communication with the gateway.
Optionally, the wireless sensor comprises an alarm sensor;
the alarm sensor is used for carrying out smoke detection and flame detection on the converter valve, and when the fact that smoke or flame occurs in the converter valve is detected, alarm information is sent to the monitoring platform through the gateway.
Optionally, the wireless sensor includes a first listening sensor;
the first monitoring sensor is used for monitoring a control instruction sent by the monitoring platform in a monitoring period after the monitoring information is uploaded, and acquiring corresponding monitoring information according to the control instruction.
Optionally, the wireless sensor includes a second listening sensor;
the second monitoring sensor is used for monitoring the control instruction sent by the monitoring platform according to a preset monitoring interval period and acquiring corresponding monitoring information according to the control instruction.
Optionally, the monitoring platform includes a network server connected to the gateway;
and the network server is used for determining a target gateway according to the link quality between the current node and each gateway node and receiving the monitoring information forwarded by the target gateway.
Optionally, the monitoring platform further includes an application server, a control server, and a database;
after receiving the monitoring information, the network server sends the monitoring information to an application server;
the application server is used for decrypting the monitoring information to obtain decrypted monitoring information and sending the decrypted monitoring information to the control server;
and the control server is used for converting the data format of the obtained monitoring information according to a preset data format and storing the converted monitoring information into the database.
Optionally, the control server is further configured to receive system control information input by a user, and send the system control information to a network server through an application server;
and the network server controls the wireless sensor according to the system control information.
Optionally, the monitoring platform further includes a data visualization server;
the data visualization server is used for acquiring the monitoring information in the database and displaying the monitoring information according to the data reading requirement of the user.
A second aspect of the present application provides a converter valve safety monitoring method, which is applied to the converter valve safety monitoring system as described in any one of the first aspect and the first aspect, where the method includes:
controlling a plurality of wireless sensors to respectively acquire monitoring information of corresponding converter valve assemblies;
acquiring monitoring information acquired by the wireless sensor based on a gateway connected with the wireless sensor;
and determining the safety monitoring result of the converter valve according to the monitoring information.
This application technical scheme has following advantage:
the application provides a converter valve safety monitoring system and method, and the system comprises: the system comprises a plurality of wireless sensors, a gateway and a monitoring platform; each wireless sensor is used for respectively acquiring monitoring information of the corresponding converter valve assembly and sending the monitoring information to the gateway; the gateway is used for forwarding the monitoring information to the monitoring platform; and the monitoring platform is used for determining the safety monitoring result of the converter valve according to the monitoring information. According to the system provided by the scheme, the wireless sensor arranged on the converter valve is utilized to acquire the monitoring information of the converter valve in real time, and remote data transmission is carried out through the gateway, so that the remote real-time monitoring of the converter valve is realized, the real-time performance of a safety monitoring result is improved, and a foundation is laid for improving the safety of the converter valve.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art according to these drawings.
Fig. 1 is a schematic structural diagram of a converter valve safety monitoring system according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of an exemplary converter valve safety monitoring system provided in an embodiment of the present application;
FIG. 3 is a diagram of a sensor communication window profile provided by an embodiment of the present application;
fig. 4 is a schematic structural diagram of another converter valve safety monitoring system provided in an embodiment of the present application;
FIG. 5 is a schematic structural diagram of another exemplary converter valve safety monitoring system provided by an embodiment of the present application;
fig. 6 is a schematic flow chart of a flow valve safety monitoring method provided in an embodiment of the present application.
With the above figures, there are shown specific embodiments of the present application, which will be described in more detail below. These drawings and written description are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the concepts of the disclosure to those skilled in the art by reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms referred to in this application are explained first:
a converter valve: the converter valve is a system with large volume, multiple components and complex structure, mainly comprises components such as a thyristor, a safety and fire prevention system, a lightning arrester, a water cooling system, a saturable reactor, a control and starting unit, a busbar, a switching bus, a shielding cover and the like, and has the main function of realizing AC-DC (rectification) or DC-AC (inversion). The basic valve module consists of a saturable reactor, a thyristor and a control trigger unit, and the core device of the basic valve module is the thyristor. The converter valve operates in complex environments with interwoven multi-physical fields of electricity, magnetism, heat and the like for a long time, and the characteristic of relatively weak operation reliability of the converter valve is determined. The reasons for causing the failure of the converter valve equipment and the fire accident are various, and besides the problems of design and manufacture, the problems also include the local over-temperature of key parts, looseness caused by vibration, water leakage of the parts, insulation failure caused by aging and the like, so that the influence on the whole direct current transmission project is caused, and huge economic loss is brought in serious cases.
Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the following examples, "plurality" means two or more unless specifically limited otherwise.
The embodiment of the application provides a converter valve safety monitoring system, which is used for carrying out real-time safety monitoring on a converter valve.
As shown in fig. 1, a schematic structural diagram of a converter valve safety monitoring system provided in an embodiment of the present application is shown, where the converter valve safety monitoring system 10 includes: a plurality of wireless sensors 101, a gateway 102, and a monitoring platform 103.
Each wireless sensor is used for respectively acquiring monitoring information of the corresponding converter valve assembly and sending the monitoring information to the gateway; the gateway is used for forwarding the monitoring information to the monitoring platform; and the monitoring platform is used for determining the safety monitoring result of the converter valve according to the monitoring information.
It should be noted that wireless communication is adopted between the wireless sensor and the gateway, and wireless communication may be adopted between the gateway and the monitoring platform, and optical fiber and wired network may also be adopted for communication. The embodiment of the application realizes the wireless monitoring system, so that the sensor can be flexibly deployed, can be used in a plug-and-play manner, and is easy to maintain and replace.
Specifically, the wireless sensor may be disposed on each component of the converter valve to monitor a current state of each component, respectively, and generate corresponding monitoring information. Then, the wireless sensor sends monitoring information to a monitoring platform through a gateway, and the monitoring platform judges whether potential safety hazards exist in each converter valve component according to the obtained monitoring information of each converter valve component, so that relevant operators are timely reminded to take corresponding emergency measures to guarantee the safety of the converter valves. The monitoring information may include, among other things, the temperature, humidity, vibration, pressure, and torque of the converter valve assembly.
The wireless sensor in the embodiment of the application utilizes the battery to supply power, and in order to change the times of the battery by less workers as far as possible, the system provided by the embodiment of the application can adopt a low-power-consumption wide area communication technology so as to greatly reduce the energy consumption of the sensor node, prolong the service life of the sensor and prolong the system maintenance interval.
Specifically, in one embodiment, the wireless sensor may be a wireless sensor without relay functionality; each wireless sensor is in direct communication with the gateway.
It should be noted that, if the wireless sensor with the relay function is used to forward monitoring information to other wireless sensors, the energy consumption of the wireless sensor will be increased.
In the embodiment of the present application, data exchange is performed between the sensor nodes and the gateway through transmitting and receiving radio frequency signals, and each wireless sensor may directly communicate with the gateway, that is, the topology structures of the sensor nodes and the gateway are in a "star" shape as shown in fig. 2. When the distance between the wireless sensor and the current gateway exceeds the communication capacity of the wireless sensor, the gateway can be additionally arranged in the area near the sensor so as to ensure that the monitoring information acquired by the wireless sensor can be normally transmitted.
On the basis of the embodiment, the gateway is not influenced by power supply factors, so that the gateway can be in a monitoring and transmitting state for a long time, the sensor node usually adopts a battery power supply mode, the energy of the sensor node is limited, and the communication of the sensor node needs to adopt a low-power-consumption technology for ensuring the long-time reliable work of the sensor node. As one practical approach, in one embodiment, the wireless sensor comprises an alarm sensor.
The alarm sensor is used for carrying out smoke detection and flame detection on the converter valve, and when smoke or flame of the converter valve is detected, alarm information is sent to the monitoring platform through the gateway.
It should be noted that, in the low power consumption communication technology, for the uplink information sent from the sensor to the gateway, since the gateway is in the constant monitoring state, the sensor node can upload the uplink information at any time according to its own needs. For the downlink information from the gateway, the sensor node can adopt a proper monitoring mode based on the consideration of self power consumption. In the embodiment of the present application, a communication channel through which a sensor transmits a signal and a gateway receives a signal is referred to as an uplink, and a communication channel through which a gateway transmits a signal and a sensor receives a signal is referred to as a downlink.
Specifically, the alarm sensor does not monitor information from the gateway, that is, the alarm sensor node is a node that does not need to acquire downlink information, and only needs to report alarm information when smoke or flame is detected.
Similarly, in one embodiment, the wireless sensor includes a first listening sensor; the first monitoring sensor is used for monitoring a control instruction sent by the monitoring platform in a monitoring period after the monitoring information is uploaded, and acquiring corresponding monitoring information according to the control instruction.
Specifically, the first monitoring sensor monitors a monitoring platform control instruction forwarded by the gateway within a certain time period, and acquires corresponding monitoring information according to the control instruction.
The first monitoring sensor node monitors the downlink information within a period of time after the uplink information is sent, and the current system cannot predict the downlink information transmission of the first monitoring sensor. The first monitoring sensor is suitable for monitoring the pressure and the torque of non-core components (such as a busbar, a switching bus, a shielding case and the like) of the converter valve, and the requirement on time delay of the monitoring information is relatively low.
Similarly, in one embodiment, the wireless sensor includes a second listening sensor; the second monitoring sensor is used for monitoring the control instruction sent by the monitoring platform according to a preset monitoring interval period and acquiring corresponding monitoring information according to the control instruction.
Specifically, the second monitoring sensor node monitors the control instruction once at intervals (monitoring interval period), that is, the current system has a clear downlink information transmission window for the second monitoring sensor. The second monitoring sensor node is a sensor node which has a control requirement on the second monitoring sensor node and has a certain requirement on time delay, and is suitable for monitoring vibration, temperature and current of certain core components (such as a thyristor and the like) of the converter valve.
In order to facilitate comparison and understanding of the communication modes of the three sensors provided in the above embodiments, as shown in fig. 3, a sensor communication window distribution diagram provided in the embodiment of the present application is shown in the figure, where the mode 1) corresponds to the alarm sensor, the mode 2) corresponds to the first monitoring sensor, and the mode 3) corresponds to the second monitoring sensor.
On the basis of the foregoing embodiment, in order to improve the processing efficiency of monitoring information and ensure the safety monitoring efficiency of the converter valve, as an implementable manner, as shown in fig. 4, a schematic structural diagram of another converter valve safety monitoring system provided in the embodiment of the present application is provided, in an embodiment, the monitoring platform 103 includes a network server 1031.
The network server is used for determining a target gateway according to the link quality between the current node and each gateway node and receiving monitoring information forwarded by the target gateway.
It should be noted that the converter valve monitoring system provided in the embodiment of the present application supports simultaneous operation of multiple gateways. When the uplink information is transmitted, for any node of the sensor, if the wireless uplink connection between the node of the sensor and a plurality of gateways is smooth, the gateways can receive the information uploaded by the node of the sensor.
Specifically, since the distances between the gateways and the network server are usually different, in order to ensure the quality of the monitoring information obtained by the monitoring platform, a target gateway may be selected from the gateways according to the link quality between the current network server and the gateways, and the monitoring information forwarded by the target gateway may be received.
Correspondingly, in an embodiment, when the monitoring platform needs to issue a control instruction to the wireless sensor, the network server may select a gateway with an optimal link as a target gateway according to the uplink quality of the sensor node when uploading information last time, and transmit downlink information (control instruction) by using the target gateway.
It should be further noted that the network server is the core of the wireless sensor network, and is used for implementing connection, management and monitoring of the sensor nodes, the gateways and the end user applications. Its primary goal is to ensure security, scalability and reliability of the overall network data routing.
Specifically, in one embodiment, the monitoring platform further comprises an application server, a control server and a database;
after receiving the monitoring information, the network server sends the monitoring information to the application server; the application server is used for decrypting the monitoring information to obtain the decrypted monitoring information and sending the decrypted monitoring information to the control server; the control server is used for carrying out data format conversion on the obtained monitoring information according to a preset data format and storing the converted monitoring information into a database.
It should be noted that, in order to ensure the data security of the entire system, the data to be transmitted in the system may be transmitted in the form of ciphertext, and both the encryption operation of the control instruction issued by the monitoring platform and the decryption operation of the monitoring information may be implemented based on the application server.
Specifically, the application server handles the application layer requirements of the network, including upstream data decryption and decoding, downstream data queuing, data encoding, and encryption. The converter valve monitoring system simultaneously provides a network interface for external integration with other external services, and other subsystems in the power system can receive monitoring information of the converter valve based on the network interface so as to realize management of users, organizations, applications and equipment. The control server mainly provides system control services, can interpret and convert data packets received from the application server according to data management standards (such as preset data formats) of the monitoring system, and finally stores the converted data in a database. The database has the functions of high-performance data query, storage and the like.
Because the wireless sensor may have a certain measurement error due to defects such as a manufacturing process, in this embodiment of the application, the control server may calibrate the received monitoring data according to a preset calibration parameter, and store the calibration parameter, the data before calibration, and the data after calibration in the database.
Further, in an embodiment, the control server is further configured to receive system control information input by a user, and send the system control information to the network server through the application server; and the network server controls the wireless sensor according to the system control information.
Specifically, the user may access the control server to implement configuration and control of the system and the sensor node, for example, increase or decrease gateways or nodes in the system, change a measurement time interval, a working mode, transmission power, and the like of the sensor node, and also change downlink transmission power of the gateway.
Specifically, in an embodiment, the monitoring platform further comprises a data visualization server; the data visualization server is used for acquiring the monitoring information in the database and displaying the monitoring information according to the data reading requirement of the user.
Specifically, the data visualization server may specifically display the monitoring data in a data panel interface in the form of a graph, a table, a curve, or the like. The data panel interface can be customized by a user, and extended functions such as alarming, data analysis and the like can be added according to requirements.
Fig. 5 is a schematic structural diagram of another exemplary converter valve safety monitoring system provided in an embodiment of the present application. As shown in fig. 5, the converter valve safety monitoring system provided by the embodiment of the application realizes the isolation of the control server and the data visualization server, and avoids the monitoring fault caused by the misoperation of a user on a data display and monitoring interface.
The converter valve safety monitoring system that this application embodiment provided includes: the system comprises a plurality of wireless sensors, a gateway and a monitoring platform; each wireless sensor is used for respectively acquiring monitoring information of the corresponding converter valve assembly and sending the monitoring information to the gateway; the gateway is used for forwarding the monitoring information to the monitoring platform; and the monitoring platform is used for determining the safety monitoring result of the converter valve according to the monitoring information. According to the system provided by the scheme, the wireless sensor arranged on the converter valve is utilized to acquire the monitoring information of the converter valve in real time, and remote data transmission is carried out through the gateway, so that the remote real-time monitoring of the converter valve is realized, the real-time performance of a safety monitoring result is improved, and a foundation is laid for improving the safety of the converter valve. In addition, different communication modes are set for the sensors with different monitoring requirements, so that the energy consumption of the sensors is reduced, the service life of the sensors is prolonged, and the system maintenance interval is prolonged. And moreover, the control server and the data visualization server are isolated, the monitoring system is prevented from being out of order due to misoperation of a user, and the safety of the monitoring system is guaranteed.
The embodiment of the application provides a flow valve safety monitoring method, and provides an application method of the flow valve safety monitoring system provided by the embodiment, which is used for carrying out real-time safety monitoring on a converter valve. The execution main body of the embodiment of the application is the monitoring platform in the converter valve safety monitoring system provided by the embodiment.
As shown in fig. 6, a schematic flow chart of a flow valve safety monitoring method provided in an embodiment of the present application is shown, where the method includes:
601, controlling a plurality of wireless sensors to respectively acquire monitoring information of corresponding converter valve assemblies;
With regard to the flow valve safety monitoring method in the present embodiment, the specific implementation principle of each step has been described in detail in the embodiment related to the system, and will not be elaborated herein.
The flow valve safety monitoring method provided by the embodiment of the application is based on the flow valve safety monitoring system provided by the embodiment for carrying out safety monitoring on the flow conversion valve, and the implementation mode and the principle of the method are the same, so that the method is not repeated.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. A converter valve safety monitoring system, comprising: the system comprises a plurality of wireless sensors, a gateway and a monitoring platform;
each wireless sensor is used for respectively acquiring monitoring information of the corresponding converter valve assembly and sending the monitoring information to a gateway;
the gateway is used for forwarding the monitoring information to a monitoring platform;
and the monitoring platform is used for determining the safety monitoring result of the converter valve according to the monitoring information.
2. The system of claim 1, wherein the wireless sensor is a wireless sensor without relay functionality;
each of the wireless sensors is in direct communication with the gateway.
3. The system of claim 1, wherein the wireless sensor comprises an alarm sensor;
the alarm sensor is used for carrying out smoke detection and flame detection on the converter valve, and when the fact that smoke or flame occurs in the converter valve is detected, alarm information is sent to the monitoring platform through the gateway.
4. The system of claim 1, wherein the wireless sensor comprises a first listening sensor;
the first monitoring sensor is used for monitoring a control instruction sent by the monitoring platform in a monitoring period after the monitoring information is uploaded, and acquiring corresponding monitoring information according to the control instruction.
5. The system of claim 1, wherein the wireless sensor comprises a second listening sensor;
the second monitoring sensor is used for monitoring the control instruction sent by the monitoring platform according to a preset monitoring interval period and acquiring corresponding monitoring information according to the control instruction.
6. The system of claim 1, wherein the monitoring platform comprises a web server connected to a gateway;
and the network server is used for determining a target gateway according to the link quality between the current node and each gateway node and receiving the monitoring information forwarded by the target gateway.
7. The system of claim 6, wherein the monitoring platform further comprises an application server, a control server, and a database;
after receiving the monitoring information, the network server sends the monitoring information to an application server;
the application server is used for decrypting the monitoring information to obtain decrypted monitoring information and sending the decrypted monitoring information to the control server;
and the control server is used for converting the data format of the obtained monitoring information according to a preset data format and storing the converted monitoring information into the database.
8. The system of claim 7, wherein the control server is further configured to receive system control information input by a user and send the system control information to a web server through an application server;
and the network server controls the wireless sensor according to the system control information.
9. The system of claim 7, wherein the monitoring platform further comprises a data visualization server;
the data visualization server is used for acquiring the monitoring information in the database and displaying the monitoring information according to the data reading requirement of the user.
10. A converter valve safety monitoring method applied to a converter valve safety monitoring system according to any one of claims 1 to 9, wherein the method comprises the following steps:
controlling a plurality of wireless sensors to respectively acquire monitoring information of corresponding converter valve assemblies;
acquiring monitoring information acquired by the wireless sensor based on a gateway connected with the wireless sensor;
and determining the safety monitoring result of the converter valve according to the monitoring information.
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| CN202110955211.0A CN113676862B (en) | 2021-08-19 | 2021-08-19 | Converter valve safety monitoring system and method |
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