CN112305377A - Power transmission line monitoring method, device and system - Google Patents
Power transmission line monitoring method, device and system Download PDFInfo
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Abstract
The application relates to a method, a device and a system for monitoring a power transmission line. The method comprises the following steps: reading power state data of the monitoring equipment, and adjusting the working mode of the monitoring equipment according to the power state data; acquiring sampling information acquired by monitoring equipment; and judging the running state of the power transmission line according to the sampling information. According to the power transmission line monitoring method, the power state data of the monitoring equipment is read, the working mode of the monitoring equipment is adjusted according to the power state data, corresponding power consumption is different due to different working modes of the monitoring equipment, namely the power consumption of the monitoring equipment is adjusted according to the power state of the monitoring equipment, so that the monitoring equipment can work continuously and stably, and the reliability of the power transmission line monitoring method is improved.
Description
Technical Field
The application relates to the technical field of power grids, in particular to a power transmission line monitoring method, device and system.
Background
With the rapid development of society, electric power plays an increasingly important role in people's life, and in order to guarantee the safe and stable operation of a power grid, a power transmission line needs to be monitored regularly.
In a traditional power transmission line monitoring method, monitoring equipment for acquiring data acquires and processes data according to a preset working mode. Because a high sampling rate requires the support of a high-power supply, once the input power supply cannot meet the requirement, the monitoring equipment cannot work normally. More and more power transmission lines are installed in areas with complex terrain conditions, such as mountains, hills and the like, and the requirements for replacement and maintenance of a power supply cannot be met in time, so that the traditional power transmission line monitoring method has the defect of low reliability.
Disclosure of Invention
In view of the foregoing, it is necessary to provide a method, an apparatus, and a system for monitoring a power transmission line with high reliability.
In a first aspect, a method for monitoring a power transmission line is provided, the method comprising:
reading power state data of monitoring equipment, and adjusting the working mode of the monitoring equipment according to the power state data; the monitoring equipment is connected with a power transmission line, working electric energy is obtained from the power transmission line, and the power state data is used for representing the energy obtaining size of the monitoring equipment;
acquiring sampling information acquired by the monitoring equipment; the sampling information is obtained by the monitoring equipment after sampling data is collected and processed based on the current working mode;
and judging the running state of the power transmission line according to the sampling information.
In one embodiment, the reading power status data of the monitoring device and adjusting the operating mode of the monitoring device according to the power status data includes:
reading power state data of monitoring equipment, and determining a power state identifier according to the power state data;
and adjusting the working mode of the monitoring equipment according to the power state identifier and the corresponding relation between the preset power state identifier and the working mode.
In one embodiment, before adjusting the operating mode of the monitoring device according to the power status identifier and the corresponding relationship between the preset power status identifier and the operating mode, the method further includes:
and acquiring and storing the corresponding relation between the power supply state identification and the working mode.
In one embodiment, before reading the power status data of the monitoring device and adjusting the operating mode of the monitoring device according to the power status data, the method further includes:
adjusting the transmit power of the monitoring device to a minimum acceptable transmit power.
In one embodiment, the method further comprises:
reading the standby power supply data of the monitoring equipment, and outputting early warning information when the standby power supply data is abnormal.
In one embodiment, the monitoring device is a sensor, and the working mode of the sensor is used for determining the sampling period and the modulation mode of the sensor.
In one embodiment, the operation modes of the sensor include a sleep mode, a semi-sleep mode, a normal mode, a high speed mode, and a real time mode.
In one embodiment, the acquiring sampling information acquired by the monitoring device includes:
and acquiring sampling information acquired by the sensor according to a sampling period.
In a second aspect, a transmission line monitoring device is provided, the device comprising:
the information reading module is used for reading power state data of monitoring equipment and sampling information acquired by the monitoring equipment;
the working mode adjusting module is used for adjusting the working mode of the monitoring equipment according to the power supply state data;
and the running state judgment module is used for judging the running state of the power transmission line according to the sampling information.
In one embodiment, the operation mode adjustment module includes: the power state identification determining unit is used for determining a power state identification according to the read power state data of the monitoring equipment; and the working mode adjusting unit is used for adjusting the working mode of the monitoring equipment according to the power state identifier and the corresponding relation between the preset power state identifier and the working mode.
In one embodiment, the operation mode adjustment module further comprises: and the corresponding relation storage unit is used for acquiring and storing the corresponding relation between the power supply state identifier and the working mode.
In one embodiment, the power transmission line monitoring apparatus further includes: and the transmission power adjusting module is used for adjusting the transmission power of the monitoring equipment to the minimum receivable transmission power.
In one embodiment, the information reading module is further configured to read standby power data of the monitoring device; the power transmission line monitoring device further comprises: and the output unit is used for outputting the early warning information when the data of the standby power supply is abnormal.
In one embodiment, the monitoring device is a sensor, and the working mode of the sensor is used for determining the sampling period and the modulation mode of the sensor; and the information reading module is also used for acquiring sampling information acquired by the sensor according to the sampling period.
In a third aspect, a power transmission line monitoring system is provided, which includes a monitoring device and a monitoring center server, wherein the monitoring device is connected to a power transmission line and acquires working electric energy from the power transmission line; the monitoring center server is connected with the monitoring equipment and is used for monitoring the power transmission line according to the method.
According to the power transmission line monitoring method, the power state data of the monitoring equipment is read, the working mode of the monitoring equipment is adjusted according to the power state data, corresponding power consumption is different due to different working modes of the monitoring equipment, namely the power consumption of the monitoring equipment is adjusted according to the power state of the monitoring equipment, so that the monitoring equipment can work continuously and stably, and the reliability of the power transmission line monitoring method is improved.
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FIG. 1 is a diagram of an application scenario in one embodiment;
fig. 2 is a schematic flow chart of a power transmission line monitoring method in one embodiment;
FIG. 3 is a schematic diagram illustrating an embodiment of a process for reading power status data of a monitoring device and adjusting a working mode of the monitoring device according to the power status data;
fig. 4 is a schematic flow chart of a power transmission line monitoring method in another embodiment;
fig. 5 is a block diagram of a power transmission line monitoring apparatus according to an embodiment;
FIG. 6 is a block diagram of an embodiment of an operating mode adjustment module;
fig. 7 is a block diagram of a power transmission line monitoring apparatus in another embodiment;
fig. 8 is a block diagram of a power transmission line monitoring system according to an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The long-term operation of electrical equipment in a complex and variable environment can be affected by severe weather and human activities. For example, violent construction may cause external damage to the transmission line, and natural disasters such as heavy precipitation, heavy snow fall, and typhoon may also cause the transmission line to fail to operate normally. Natural losses in line equipment such as wires, towers, insulators, etc. in the transmission line can also lead to circuit faults. If the above conditions can not be found and solved in time, accidents such as large-area power failure and the like can be caused, and huge economic loss which can not be compensated can be caused. In order to find and solve the operation fault of the power transmission line in time, monitoring equipment is installed on the power transmission line, and the monitoring equipment and a monitoring center form a local area network, so that the real-time detection of the power transmission line can be realized.
The application relates to a power transmission line monitoring method based on an ad hoc network, which is used for detecting the running state of a power transmission line. In the following, a brief description will be given of an implementation environment related to the power transmission line monitoring method provided in the embodiment of the present application.
As shown in fig. 1, the implementation environment may include a monitoring device 10, a monitoring center server 20, and a terminal 30. Wherein the monitoring device 10 and the terminal 30 can communicate with the monitoring center server 20. The monitoring device 10 and the monitoring center server 20 may communicate with each other through a network, or a directional antenna may be disposed at the position of the detecting device 10, and a self-organizing transmission network is formed through the directional antenna, and the monitoring device 10 transmits the acquired data to the monitoring center server 20 through the self-organizing transmission network. The monitoring center server 20 performs unified processing on the data, so that the real-time tracking and judgment of the operation state of the power transmission line are realized, the line fault is early warned in time, and the safe and stable operation of the power grid is guaranteed.
In practical applications, the terminal 30 may be an electronic device such as a personal computer, a notebook computer, a media player, an intelligent television, an intelligent mobile phone, a tablet computer, and a portable wearable device, which is not specifically limited in this embodiment of the present application; the monitoring center server 20 may be one server or a server cluster composed of a plurality of servers, and the monitoring center server 20 may be a tower server, a rack server, a blade server, a high-density server, a single-path server, a dual-path server, or a multi-path server, and the like.
In a first aspect of the application, a method for monitoring a power transmission line is provided. Referring to fig. 2, in an embodiment, the power transmission line monitoring method includes steps S200 to S600.
Step S200: and reading the power state data of the monitoring equipment, and adjusting the working mode of the monitoring equipment according to the power state data.
Wherein, monitoring facilities includes sensor and camera. It can be understood that different monitoring devices have slightly different collected sampling information. For example, the sensor can sense the equipment parameters, the environmental parameters and the like of the power transmission line, and the camera can acquire images of the surrounding environment of the power transmission line. The sensor may be an infrared sensor or other type of sensor. Similarly, the camera can be an infrared camera and is used for collecting infrared images, so that the monitoring center server can conveniently monitor and early warn special scenes such as mountain fire and the like; the monitoring center server can observe and early warn foreign matters such as engineering vehicles, bird nests and ice coating, prevent line faults and external force damage and clear potential safety hazards in time.
The monitoring equipment is connected with the power transmission line and obtains working electric energy from the power transmission line. The method for acquiring energy from the power transmission line by the monitoring equipment comprises the steps of adopting a CT (current transformer) energy acquisition coil to induce alternating current voltage from a high-voltage bus of the power transmission line based on an electromagnetic induction principle, and converting the alternating current voltage into stable direct current after rectification, filtering and voltage stabilization so as to provide energy for the monitoring equipment. It can be easily understood that the power state data of the monitoring equipment can directly reflect the dynamic change condition of the current in the power transmission line and can also directly represent the energy obtaining size of the monitoring equipment.
And the working mode of the monitoring equipment corresponds to the running power of the monitoring equipment. Taking the sensor as an example, when the sensor works in a high-speed operation mode, the sampling interval is short and a high-order modulation mode is adopted, and at this time, the operation power of the sensor is larger than that of a low-speed operation mode which has a long sampling interval and adopts a low-order modulation mode, so that a power supply support which needs larger power correspondingly is required. And adjusting the working mode of the monitoring equipment according to the power supply state data, namely correspondingly adjusting the running power of the monitoring equipment according to the power supply condition of the current monitoring equipment. Specifically, different working modes and working parameters in the working modes can be set in the monitoring equipment, and the monitoring center server switches the working modes of the monitoring equipment according to the read power state data of the monitoring equipment. Further, when the power state data is not changed or is changed within a preset range, the current working mode of the monitoring device is kept unchanged.
Step S400: and acquiring sampling information acquired by monitoring equipment.
The sampling information acquired by the monitoring equipment refers to sampling information acquired by the monitoring equipment after acquiring and processing sampling data based on the current working mode. For example, when the monitoring device is a sensor, based on different working modes, the frequency of data acquisition and the processing mode of the data are different, and after the sensor acquires the data according to the current sampling frequency, the data is compressed, redundant and the like, so that the sampling information is obtained. The method for acquiring the sampling information acquired by the monitoring device by the monitoring center server may be actively reading the sampling information of the monitoring device, or sending the sampling information to the monitoring center server after the monitoring device acquires the sampling information based on the current working mode.
Step S600: and judging the running state of the power transmission line according to the sampling information.
After the monitoring center server acquires the sampling information acquired by the plurality of monitoring devices, the sampling information is analyzed, and then the running state of the power transmission line can be judged. For example, the operation state of the power transmission line can be judged by comprehensively analyzing the temperature of the wire, the leakage current on the surface of the insulator, the phenomenon pictures of the power transmission wire, the insulator and the tower, and the sampling information such as the environmental temperature, the humidity, the wind direction, the wind speed, the rainfall, the air pressure and the like, and when the operation state of the power transmission line is abnormal, the fault reason and the fault node can be judged based on the information.
Further, in an embodiment, after the monitoring center server determines the operating state of the power transmission line according to the sampling information, the method further includes: and outputting the judgment result of the running state of the power transmission line. The monitoring center server may output the result only when the state of the power transmission line is abnormal, or may output the judgment result regardless of the operation state. The judgment result of the running state can be character information or chart video information. In addition, when the running state of the power transmission line is abnormal, an early warning signal and abnormal sampling information can be output, and a fault reason and a fault node are obtained through analysis by the monitoring center server. The output object of the judgment result of the operation state of the power transmission line can be a display carried by the monitoring center server or the terminal. In short, the present embodiment does not limit the manner, specific content, and output object of the determination result of the operation state of the power transmission line.
According to the power transmission line monitoring method, the power state data of the monitoring equipment is read, the working mode of the monitoring equipment is adjusted according to the power state data, corresponding power consumption is different due to different working modes of the monitoring equipment, namely the power consumption of the monitoring equipment is adjusted according to the power state of the monitoring equipment, so that the monitoring equipment can work continuously and stably, and the reliability of the power transmission line monitoring method is improved. On the other hand, the self-adaptive adjustment of the working mode is carried out according to the function condition of the monitoring equipment, the energy utilization rate is improved, the low-power mode is avoided being used under the condition of high energy supply, and the monitoring function of the monitoring equipment is exerted to the maximum extent. After the monitoring center server acquires the sampling information acquired by the monitoring equipment, the running state of the power transmission line is judged according to the sampling information, so that the real-time monitoring of the state of the power transmission line can be realized, and the safety accidents of the power grid equipment can be prevented and reduced.
In one embodiment, referring to fig. 3, step S200 includes step S220 and step S240.
Step S220: and reading power state data of the monitoring equipment, and determining a power state identifier according to the power state data.
As mentioned above, the power status data of the monitoring device refers to electrical parameter data that can be used to characterize the energy consumption of the monitoring device. The power state data includes current and voltage. The power state identifiers can be letters or numbers, and the power state data corresponding to each power state identifier is within a preset range. Specifically, the power state identifier corresponding to the currently acquired power state data can be determined by comparing the currently acquired power state data with a preset power state data range corresponding to the power state identifier. Assuming that the power state data is the energy taking current, the power state identifier is a number, and the greater the number of the power state identifier is, the greater the energy taking current of the interval monitoring equipment is represented. Taking a sensor as an example, when the energy taking current is lower than 3A, the power state mark is marked as 1; when the energy taking current is in the range of 3A-10A, marking the power state as 2; when the energy taking current is within the range of 10A-30A, the power state mark is marked as 3; when the energy-taking current is larger than 30A, the power state flag is marked as 4. It can be understood that each preset range of the interval in which the power state data is divided is not unique, and needs to be individually set according to the configuration of specific monitoring equipment, and similarly, the number of the power state identifiers is also not unique.
Step S240: and adjusting the working mode of the monitoring equipment according to the power state identifier and the corresponding relation between the preset power state identifier and the working mode.
According to the energy obtaining size of the monitoring equipment, the working mode of the monitoring equipment needs to be adjusted in real time. After the power state identifier is determined according to the power state data of the monitoring device, because different power state identifiers correspond to different working modes, a unique working mode can be determined according to the current power state identifier, and the monitoring device is correspondingly adjusted to work in the corresponding working mode. Of course, if the current power status identifier is the same as the power status identifier determined according to the last read power status data, the current operating mode of the monitoring device is kept unchanged.
In the above embodiment, the power state data of the monitoring device is read, and the power state identifier is determined according to the power state data; and adjusting the working mode of the monitoring equipment according to the power state identifier and the corresponding relation between the preset power state identifier and the working mode. Different power state identifiers can be set according to different intervals of the power state data, if the current power state identifier is the same as the power state identifier determined according to the power state data read last time, the current working mode of the monitoring equipment is kept unchanged, frequent adjustment of the working mode is avoided, and the running speed of the monitoring system is improved.
In one embodiment, please continue to refer to fig. 3, before step S240, step S230 is further included.
Step S230: and acquiring and storing the corresponding relation between the power supply state identification and the working mode.
The working mode of the monitoring equipment corresponds to the running power of the monitoring equipment, and the power supply state identification can directly represent the energy obtaining size of the monitoring equipment. Specifically, the monitoring center server can directly acquire and store the corresponding relation between the power state identifier and the working mode without data processing; the monitoring equipment can also feed back working parameters under different working modes to the monitoring center server, and the monitoring center server can calculate the energy obtaining size required to be met when the monitoring center server works in the mode according to the working parameters, so as to obtain and store the corresponding relation between the power state identifier and the working mode. Furthermore, the monitoring equipment can be periodically maintained according to the service condition of the monitoring equipment, and the range of the power state data corresponding to the power state identifier and the corresponding relation between the power state identifier and the working mode are updated.
In the above embodiment, the corresponding relationship between the power state identifier and the working mode is obtained and stored in advance, which is beneficial to quickly adjusting the working mode of the monitoring device according to the current power state identifier in the monitoring process of the power transmission line, and improves the response speed.
In an embodiment, referring to fig. 4, before the step S200, a step S100 is further included.
Step S100: the transmit power of the monitoring device is adjusted to the minimum acceptable transmit power.
In the data transmission process, a first channel and a second channel are generally included, wherein the first channel may be a data channel, and the second channel may be a control channel. The transmit power may be adjusted based on a power ratio between the first channel and the second channel, which may be adjusted by a coding rate, a data transmission rate, and a rate matching parameter. Specifically, according to the current communication situation and the operation state of the control center server, the control center server may determine the minimum transmit power that can be correctly received currently, and adjust the transmit power of the monitoring device to the minimum transmit power that can be received currently.
In the above embodiment, before the monitoring device sends the sampling information, the transmitting power of the monitoring device is adjusted to the minimum transmitting power that the monitoring center server can correctly receive, which is beneficial to saving the power of the monitoring device and exerting the monitoring function of the monitoring device to the maximum extent.
In an embodiment, please continue to refer to fig. 4, the power transmission line monitoring method further includes step S800.
Step S800: reading the standby power supply data of the monitoring equipment, and outputting early warning information when the standby power supply data is abnormal.
Specifically, inside the monitoring device, a backup power supply is provided, and the backup power supply may be an energy storage capacitor, an energy storage battery, or other electrical elements with an energy storage function. And under the condition that the power transmission line works normally, the monitoring equipment acquires energy from the power transmission line. And when the corresponding working mode of the monitoring equipment under the lowest power cannot be maintained due to the fault of the power transmission line, the standby power supply maintains the low-power operation of the monitoring equipment. The reading of the standby power supply data of the monitoring device can be real-time reading or regular reading. The early warning information can be character information or chart information. The output object of the early warning information can be a monitor carried by the monitoring center server or a terminal. In short, the embodiment does not limit the specific content of the output warning information and the output object. Specifically, a standby power state data threshold value can be set according to the specific configuration of the standby power of the monitoring device, and when the read standby power data is lower than a preset threshold value, early warning information is output.
In the above embodiment, the backup power data of the monitoring device is read, and the early warning information is output when the backup power data is abnormal, so that the monitoring device is conveniently maintained by the worker according to the abnormal information, and the stability of the power transmission line monitoring system is favorably improved.
In one embodiment, the monitoring device is a sensor, and the operating mode of the sensor is used to determine the sampling period and modulation pattern of the sensor.
The sensor refers to a device or apparatus that can sense a predetermined measured quantity and can convert the sensed measured quantity into a usable signal according to a certain rule (mathematical function rule). The sensor usually consists of a sensitive element, a conversion element and a conversion circuit, wherein the sensitive element directly senses a measured quantity and outputs a physical quantity signal which has a determined relation with the measured quantity; the conversion element converts the physical quantity signal output by the sensitive element into an electric signal; the conversion circuit is responsible for modulating the electric signal output by the conversion element. The power consumption of the sensor is determined by the sampling period of the sensitive element and the data modulation mode of the conversion circuit. The sampling period of the sensor refers to the interval between two samplings of the sensor. Modulation is a common modulation scheme used in the process of converting a signal into a form suitable for signal transmission, and includes amplitude modulation, frequency modulation, and phase modulation. Specifically, different sampling periods and modulation modes can be set corresponding to different working modes. And the monitoring center server determines the sampling period and the modulation mode of the sensor after setting a corresponding working mode according to the currently read power state data of the sensor.
Further, in one embodiment, the operating modes of the sensor include sleep mode, semi-sleep mode, normal mode, high speed mode, and real time mode.
Specifically, in the sleep mode, the sensor does not perform sampling operation, and after the preset sleep cycle is finished, the server reads the power state data of the sensor again, and modulates the working mode of the sensor based on the new power state data. In this case, the sensor may be switched to the sleep mode when the sensor has zero or very little energy taken from the external line.
In one embodiment, when the energy taken by the sensor from the external line is zero, the sensor is in a power-off state, sampling work is not performed, and power state data is not transmitted, the monitoring center server actively reads new power state data after the sleep period is finished, and then adjusts the working mode of the sensor based on the new power state data.
In one embodiment, when the energy taking of the sensor from an external circuit is zero, a standby power supply in the sensor is used for temporarily supplying power, the low-power operation of the sensor is maintained, the sampling operation is not performed, and the sending requirement of power state data is only met. In one embodiment, when the energy taken by the sensor from the external circuit is extremely small, the sensor is in a standby state, sampling work is not carried out, and only the transmission requirement of power state data is met. Further, the sensor sends new power state data to the monitoring center server after the sleep period is finished, and the monitoring center server modulates the working mode of the sensor based on the new power state data.
Furthermore, when the energy extraction of the sensor from the external circuit is zero or extremely small, the monitoring center server can judge that the power transmission line has a fault at the moment according to the current power state data of the sensor, and output fault information.
In the semi-dormant state, the energy obtaining of the sensor is small, all auxiliary functions of the sensor are turned off, the basic monitoring requirement is only met, the sampling period is long, and a low-order data modulation mode is adopted, for example, the sampling period is 15min, and the modulation mode is low-order BPSK (binary phase shift keying). In a normal state, the energy obtaining size of the sensor meets the requirement of normal monitoring, the sampling period is medium, and a medium-speed data modulation mode is adopted, for example, the sampling period is 1min, and the modulation mode is high-order BPSK. Under a high-speed state, the energy obtaining size of the sensor can meet the requirement of quick response, the sampling period is short, and a high-order combined modulation data modulation mode is adopted, for example, the sampling period is 5S, and the modulation mode is high-order 16QAM (quadrature amplitude modulation). In a real-time state, the energy obtaining size of the sensor meets the requirement of real-time sampling, the period is extreme, and a high-order data modulation mode of combined modulation which is faster than the transmission speed in a high-speed state is adopted, for example, the sampling period is 200ms, the modulation mode is high-order 64QAM, and at the moment, approximately continuous sampling data can be obtained and can be displayed and processed by a terminal. It can be understood that the setting of the sampling period and the modulation mode of the above working mode is not unique, and can be adjusted according to the actual situation.
In the above embodiment, different working modes are set for the sensor, and different sampling periods and modulation modes are corresponded, which is beneficial to exerting the monitoring function of the sensor to the maximum extent under the current power supply condition.
In one embodiment, step S400 includes: and acquiring sampling information acquired by the sensor according to the sampling period.
Specifically, the sensor only collects and transmits data once in a sampling period, the monitoring center server reads the power state data again until the current sampling period is finished, the working mode of the sensor is adjusted according to the current power state data, and a new sampling period and a new modulation mode are set. Further, the sensor can be switched to a low-power-consumption standby state after the sensor completes data transmission of the current sampling period. And after the current sampling period is finished, the monitoring center server adjusts the working mode of the sensor according to the new power state data. And the sensor performs sampling operation based on the new operation mode.
In the above embodiment, the sensor collects and transmits data only once in one sampling period. And after the current sampling period is finished, the monitoring center server reads the power state data again and sets a new working model. The working mode of the sensor is adjusted in real time according to the energy obtaining size of the sensor, and the monitoring function of the monitoring equipment is exerted to the maximum extent.
It should be understood that, although the steps in the flowcharts shown in the above embodiments are shown in sequence as indicated by the arrows, the steps are not necessarily executed in sequence as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a part of the steps in each flowchart involved in the above embodiments may include multiple sub-steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of performing the sub-steps or the stages is not necessarily sequential, but may be performed alternately or alternatingly with other steps or at least a part of the sub-steps or the stages of other steps.
In a second aspect of the present application, a power transmission line monitoring device is provided. Referring to fig. 5, the power transmission line monitoring apparatus includes an information reading module 200, a working mode adjusting module 400, and an operation state determining module 600. The information reading module 200 is configured to read power state data of the monitoring device and sampling information acquired by the monitoring device; the monitoring equipment is connected with the power transmission line, working electric energy is obtained from the power transmission line, and the power state data is used for representing the energy obtaining size of the monitoring equipment. The working mode adjusting module 400 is used for adjusting the working mode of the monitoring device according to the power state data; the sampling information is obtained by the monitoring equipment after sampling data is collected and processed based on the current working mode. And an operation state judgment module 600, configured to judge an operation state of the power transmission line according to the sampling information.
In one embodiment, referring to fig. 6, the operation mode adjustment module 400 includes a power state identification determination unit 420 and an operation mode adjustment unit 440. The power state identifier determining unit 420 is configured to determine a power state identifier according to the read power state data of the monitoring device; the working mode adjusting unit 440 is configured to adjust the working mode of the monitoring device according to the power status identifier and a preset corresponding relationship between the power status identifier and the working mode.
In one embodiment, please continue to refer to fig. 6, the operation mode adjustment module 400 further includes: the corresponding relation storage unit 430 is configured to obtain and store a corresponding relation between the power state identifier and the operating mode.
In an embodiment, please refer to fig. 7, the power transmission line monitoring apparatus further includes: a transmission power adjusting module 100, configured to adjust the transmission power of the monitoring device to a minimum acceptable transmission power.
In one embodiment, the information reading module 200 is further configured to read backup power data of the monitoring device. Please refer to fig. 7, the power transmission line monitoring apparatus further includes: and an output unit 800, configured to output the warning information when the backup power data is abnormal.
In one embodiment, the monitoring device is a sensor, and the operating mode of the sensor is used to determine the sampling period and modulation pattern of the sensor. The information reading module 200 is further configured to obtain sampling information acquired by the sensor according to the sampling period.
For specific limitations of the power transmission line monitoring device, reference may be made to the above limitations on the power transmission line monitoring method, which is not described herein again. All or part of the modules in the power transmission line monitoring device can be realized by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
The third aspect of the application provides a power transmission line monitoring system, which comprises monitoring equipment and a monitoring center server, wherein the monitoring equipment is connected with a power transmission line and acquires working electric energy from the power transmission line; the monitoring center server is connected with the monitoring equipment and used for monitoring the power transmission line according to the method.
As shown in fig. 8, a power transmission line monitoring system may include a plurality of monitoring devices. The monitoring devices are connected with the power transmission line and obtain working electric energy from the power transmission line. The power state data of the monitoring equipment can represent the energy obtaining size of the monitoring equipment. And after the monitoring center server reads the power state data of each monitoring device, adjusting the working mode of the corresponding monitoring device according to the power state data. After sampling information is obtained by each monitoring device based on the current working mode, the sampling information is sent to a monitoring center server, and the monitoring center server analyzes the sampling information to obtain the running state of the power transmission line.
According to the power transmission line monitoring system, the monitoring center server controls the plurality of monitoring devices, and the working modes of the corresponding monitoring devices are adjusted according to the power state data of the monitoring devices. The monitoring equipment has different working modes and corresponding different power consumptions, namely the power consumption of the monitoring equipment is adjusted according to the power supply state of the monitoring equipment, so that the monitoring equipment continuously and stably works, and the reliability of the power transmission line monitoring system is improved. On the other hand, the self-adaptive adjustment of the working mode is carried out according to the function condition of the monitoring equipment, the energy utilization rate is improved, the low-power mode is avoided being used under the condition of high energy supply, and the monitoring function of the monitoring equipment is exerted to the maximum extent. After the monitoring center server acquires the sampling information acquired by the monitoring equipment, the running state of the power transmission line is judged according to the sampling information, so that the real-time monitoring of the state of the power transmission line can be realized, and the safety accidents of the power grid equipment can be prevented and reduced.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method for monitoring a power transmission line, the method comprising:
reading power state data of monitoring equipment, and adjusting the working mode of the monitoring equipment according to the power state data; the monitoring equipment is connected with a power transmission line, working electric energy is obtained from the power transmission line, and the power state data is used for representing the energy obtaining size of the monitoring equipment;
acquiring sampling information acquired by the monitoring equipment; the sampling information is obtained by the monitoring equipment after sampling data is collected and processed based on the current working mode;
and judging the running state of the power transmission line according to the sampling information.
2. The method according to claim 1, wherein the reading of the power status data of the monitoring device and the adjustment of the operating mode of the monitoring device according to the power status data comprises:
reading power state data of monitoring equipment, and determining a power state identifier according to the power state data;
and adjusting the working mode of the monitoring equipment according to the power state identifier and the corresponding relation between the preset power state identifier and the working mode.
3. The method according to claim 2, wherein before adjusting the operating mode of the monitoring device according to the power status identifier and the corresponding relationship between the preset power status identifier and the operating mode, the method further comprises:
and acquiring and storing the corresponding relation between the power supply state identification and the working mode.
4. The method according to claim 1, wherein before reading the power status data of the monitoring device and adjusting the operating mode of the monitoring device according to the power status data, the method further comprises:
adjusting the transmit power of the monitoring device to a minimum acceptable transmit power.
5. The method of claim 1, further comprising:
reading the standby power supply data of the monitoring equipment, and outputting early warning information when the standby power supply data is abnormal.
6. The method according to any one of claims 1 to 5, wherein the monitoring device is a sensor, and the operating mode of the sensor is used to determine the sampling period and modulation mode of the sensor.
7. The method of claim 6, wherein the operating modes of the sensor include sleep mode, semi-sleep mode, normal mode, high speed mode, and real time mode.
8. The method according to claim 6, wherein the obtaining of the sampling information collected by the monitoring device includes:
and acquiring sampling information acquired by the sensor according to a sampling period.
9. A transmission line monitoring device, the device comprising:
the information reading module is used for reading power state data of monitoring equipment and sampling information acquired by the monitoring equipment;
the working mode adjusting module is used for adjusting the working mode of the monitoring equipment according to the power supply state data;
and the running state judgment module is used for judging the running state of the power transmission line according to the sampling information.
10. The power transmission line monitoring system is characterized by comprising monitoring equipment and a monitoring center server, wherein the monitoring equipment is connected with a power transmission line and acquires working electric energy from the power transmission line; the monitoring center server is connected with the monitoring equipment and used for monitoring the power transmission line according to the method of any one of claims 1 to 8.
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