CN111525693A - Method, device and system for monitoring vibration state of power transmission line - Google Patents
Method, device and system for monitoring vibration state of power transmission line Download PDFInfo
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- CN111525693A CN111525693A CN202010373209.8A CN202010373209A CN111525693A CN 111525693 A CN111525693 A CN 111525693A CN 202010373209 A CN202010373209 A CN 202010373209A CN 111525693 A CN111525693 A CN 111525693A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00022—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/32—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from a charging set comprising a non-electric prime mover rotating at constant speed
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Abstract
The invention discloses a method, a device and a system for monitoring a breeze vibration state of a trigger type power transmission line. The method comprises the following steps: collecting the kinetic energy of the vibration of the power transmission line; converting the kinetic energy into electric energy, and storing the electric energy into an energy storage module, wherein the energy storage module is used for supplying power to a state monitoring sensor for detecting the vibration state of the power transmission line; controlling the energy storage module to supply power to the state monitoring sensor and driving the state monitoring sensor to start working; and detecting the vibration signal of the power transmission line through the state monitoring sensor. The power supply system provided by the invention converts the kinetic energy of the vibration of the power transmission line into the electric energy to supply power to the state monitoring sensor, so that the power supply to the state monitoring sensor can be realized as long as the wire on the power transmission line vibrates, the influence of weather environment and battery power is avoided, the power supply of the state monitoring sensor is ensured, and the problem of abnormal wire vibration monitoring caused by unstable power supply is avoided.
Description
Technical Field
The invention relates to the technical field of power systems, in particular to a method, a device and a system for monitoring a breeze vibration state of a trigger type power transmission line.
Background
The vibration of the transmission line lead often causes damage such as strand breakage, line breakage, hardware falling and the like of the line, the safe and reliable operation of the power grid is seriously influenced, and in order to avoid the accidents, a lead breeze vibration monitoring system is widely deployed in power grid enterprises and used for detecting the vibration condition of the lead. The existing on-line monitoring method mainly supplies power to a battery or a CT coil, wherein the service life of the battery is limited, the battery needs to be replaced periodically, the maintenance cost is high, the solar battery is also adopted for supplying power, but the method is limited by the weather environment, and when continuous rainy weather occurs, normal power supply cannot be guaranteed, so that advanced vibration detection cannot be carried out; the CT power-taking mode is affected by the line load, so that stable power supply is difficult to realize, and the reliability is insufficient. In summary, according to the existing power transmission line breeze vibration monitoring method and system, when the battery ages or the electric quantity is exhausted and the line load is not enough to drive the CT to take power, the breeze vibration state of the line cannot be timely discovered by the power grid operation and maintenance personnel, and potential safety hazards exist.
Therefore, how to ensure that the monitoring of the line vibration state is not missed when the power transmission line generates breeze vibration becomes a technical problem to be solved.
Disclosure of Invention
Therefore, the invention aims to solve the problem that the vibration of the lead cannot be stably detected due to unstable power supply of the sensor in the prior art, and provides a method, a device and a system for monitoring the vibration state of the power transmission line
In order to achieve the purpose, the invention provides the following scheme:
in a first aspect, an embodiment of the present invention provides a method for monitoring a vibration state of a power transmission line, where the method includes: collecting the kinetic energy of the vibration of the power transmission line; converting the kinetic energy into electric energy, and storing the electric energy into an energy storage module, wherein the energy storage module is used for supplying power to a state monitoring sensor for detecting the vibration state of the power transmission line; controlling the energy storage module to supply power to the state monitoring sensor and driving the state monitoring sensor to start working; and detecting the vibration signal of the power transmission line through the state monitoring sensor.
In one embodiment, the storing the electrical energy to an energy storage module includes: judging whether the real-time voltage of the energy storage module is lower than an energy storage threshold voltage or not; when the real-time voltage of the energy storage module is lower than the energy storage threshold voltage, the energy storage module is continuously charged; and when the real-time voltage of the energy storage module is higher than or equal to the energy storage threshold voltage, stopping charging the energy storage module.
In one embodiment, the controlling the energy storage module to supply power to the condition monitoring sensor includes: judging the magnitude relation between the real-time voltage of the energy storage module and a cut-off threshold voltage and the energy storage threshold voltage, wherein the energy storage threshold voltage is greater than the cut-off threshold voltage; when the energy storage module real-time voltage is higher than or equal to the cut-off threshold voltage and lower than the energy storage threshold voltage, maintaining the current discharging state of the energy storage module, wherein the current discharging state comprises a state of supplying power to the state monitoring sensor and a state of stopping supplying power to the state monitoring sensor; and when the real-time voltage of the energy storage module is higher than or equal to the energy storage threshold voltage, controlling the energy storage module to discharge so as to supply power to the state monitoring sensor.
In an embodiment, when the real-time voltage of the energy storage module is lower than the cut-off threshold voltage, the energy storage module is controlled to stop supplying power to the state monitoring sensor, and the state monitoring sensor stops detecting the vibration signal of the power transmission line.
In an embodiment, when the real-time voltage of the energy storage module is lower than the cut-off threshold voltage, the step of converting the kinetic energy into the electric energy and storing the electric energy into the energy storage module is returned to be executed.
In an embodiment, after the detecting the vibration signal of the power transmission line by the state monitoring sensor, the method further includes: and sending the vibration signal to a concentrator or a state monitoring background.
In one embodiment, a wireless communication module is disposed on the state monitoring sensor, and the sending of the vibration signal to the concentrator or the state monitoring background includes: and the vibration signal is sent to a concentrator or a state monitoring background by the wireless communication module in a wireless communication mode.
In a second aspect, an embodiment of the present invention provides a device for monitoring a vibration state of a power transmission line, including: the vibration energy collecting module is arranged on the power transmission line, connected with the energy storage module and used for collecting the vibration kinetic energy of the power transmission line; and converting the kinetic energy into electric energy; the state monitoring sensor is arranged on the power transmission line and used for detecting a vibration signal of the power transmission line; the charging and discharging control module is respectively connected with the vibration energy collecting module and the energy storage module and is used for storing the electric energy to the energy storage module, controlling the energy storage module to supply power to the state monitoring sensor and driving the state monitoring sensor to start working; the energy storage module is connected with the state monitoring sensor and used for storing the electric energy and supplying power to the state monitoring sensor for detecting the vibration state of the power transmission line.
In one embodiment, the condition monitoring sensor is a wireless acceleration sensor, and the wireless acceleration sensor includes: the acceleration sensor module is used for detecting a vibration signal of the power transmission line; and the wireless communication module is connected with the acceleration sensor and used for sending the vibration signal in a wireless communication mode.
In a third aspect, an embodiment of the present invention provides a system for monitoring a vibration state of a power transmission line, including: the device for monitoring the vibration state of the power transmission line is used for detecting a vibration signal on the power transmission line; the concentrator is in communication connection with the vibration state monitoring device and is used for collecting vibration signals detected by the vibration state monitoring device; and the state monitoring background is connected with the concentrator and used for storing and displaying the vibration signal.
The technical scheme of the invention has the following advantages: the invention provides a method, a device and a system for monitoring the vibration state of a power transmission line, which collect the kinetic energy of the vibration of the power transmission line; converting the kinetic energy into electric energy and storing the electric energy in an energy storage module; the energy storage module supplies power to a state monitoring sensor for detecting the vibration of the power transmission line and is used for driving the state monitoring sensor to start working; and detecting a vibration signal of the power transmission line through the state monitoring sensor. In the embodiment of the invention, the kinetic energy of the vibration of the power transmission line is converted into the electric energy to supply power to the state monitoring sensor, so that the power supply to the state monitoring sensor can be realized as long as the wire on the power transmission line vibrates, and compared with the power supply mode adopting a battery power supply mode or a solar battery power supply mode and a CT coil power supply mode in the prior art, the power supply to the state monitoring sensor is not influenced by the weather environment and the battery power quantity, the wiring is not needed, the power supply to the state monitoring sensor is fully ensured, the self-sufficiency is realized on the aspect of the electric energy supply to the state monitoring sensor, and the problem of abnormal wire vibration detection caused by unstable power supply is avoided.
On the other hand, the embodiment of the invention only acquires the breeze vibration state information and returns the data when the power transmission line generates breeze vibration, thereby greatly reducing the communication frequency and the data volume, avoiding the waste of communication resources, and having the advantages of high reliability, no maintenance, low communication frequency and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings 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 invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a flowchart of a method for monitoring a vibration state of a power transmission line according to an embodiment of the present invention;
FIG. 2 is an apparatus diagram of a vibration energy harvesting module provided by an embodiment of the present invention;
fig. 3 is a schematic diagram of a vibration state monitoring device of a power transmission line according to an embodiment of the present invention;
fig. 4 is a flowchart illustrating the operation of the charge and discharge control module according to the embodiment of the present invention;
fig. 5 is a composition diagram of a specific example of a vibration state monitoring system of a power transmission line according to an embodiment of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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 invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
The embodiment of the invention provides a method for monitoring the vibration state of a power transmission line, which is used for monitoring the breeze vibration state of the power transmission line, and as shown in figure 1, the method comprises the following steps:
step S101, collecting kinetic energy of the vibration of the power transmission line, and converting the kinetic energy into electric energy.
The wind speed is small, the breeze vibration amplitude is small, the frequency is high, meanwhile, the influence of the terrain, the span, the erection height and the erection tension is obvious, when wind blows to a power transmission line at a stable wind speed, the wire is enabled to generate vertical vibration, when the wire vibration reaches a certain frequency, the wire resonates in a vertical plane to form up-down regular wavy reciprocating motion, namely, the breeze vibration is generated, and at the moment, the vibration energy collection module collects the vibration energy generated by the breeze vibration.
In the embodiment of the invention, the vibration energy collecting module converts the vibration energy into the electric energy by using electromechanical conversion principles such as electromagnetism, piezoelectricity, triboelectricity and the like, and can be set according to operation feasibility in practical application, which is not limited by the invention. Taking the electromagnetic power generation principle as an example, in an optional implementation manner in the embodiment of the invention, the vibration energy collecting device is composed of a permanent magnet, a spring, an induction coil, a mass block and the like, and the material of the mass block takes an insulator as an optimum so as to avoid other influences on the spring and further influence on energy conversion. The induction coil is wound on the mass block, the spring is connected with the mass block, the permanent magnet is fixed at the bottom end of the vibration energy collecting device, as shown in fig. 2, under the excitation of external vibration, the mass block connected with the spring moves in the vertical direction by utilizing gravity and the pulling force of the spring, at the moment, relative motion is generated between the induction coil and the permanent magnet, the magnetic flux in a coil loop is changed, induced electromotive force is generated, and therefore current is generated. Other principles can be referred to the above embodiments and will not be described herein.
And S102, storing the electric energy to an energy storage module, wherein the energy storage module is used for supplying power to a state monitoring sensor for detecting the vibration state of the power transmission line.
In the embodiment of the invention, the energy storage module acquires relatively large instantaneous current output capacity by accumulating the electric energy output by the vibration energy collecting module, and supplies electric energy to the state monitoring sensor. According to the embodiment of the invention, the breeze vibration energy is collected to provide electric energy for the state monitoring sensor, so that the operation effectiveness of the state monitoring system when the transmission line generates the breeze vibration is ensured. The energy storage module in the embodiment of the present invention may be a rechargeable battery, such as a capacitor, a lithium battery, or the like, and the energy storage module is mainly used for storing electric energy obtained by converting kinetic energy of vibration of the power transmission line, that is, the source of the electric energy is different from that of the battery in the prior art.
And S103, controlling the energy storage module to supply power to the state monitoring sensor and driving the state monitoring sensor to start working.
In the embodiment of the invention, the energy storage module accumulates the electric energy output by the vibration energy collecting module to obtain relatively large instantaneous current output capacity, so that power is supplied to the state monitoring sensor to drive the state monitoring sensor to start working. The embodiment of the invention realizes self-sufficiency in the aspect of electric energy supply and improves the power supply mode of the sensor.
And step S104, detecting the vibration signal of the power transmission line through the state monitoring sensor.
In the embodiment of the present invention, the vibration signal of the power transmission line includes information such as the frequency, acceleration, amplitude, and the like of the breeze vibration, and may be set according to the requirement in practical application, which is not limited to the present invention.
According to the embodiment of the invention, the kinetic energy of the vibration of the power transmission line is collected; converting the kinetic energy into electric energy and storing the electric energy in an energy storage module; the energy storage module supplies power to a state monitoring sensor for detecting the vibration of the power transmission line and is used for driving the state monitoring sensor to start working; and detecting a vibration signal of the power transmission line through the state monitoring sensor. In the embodiment of the invention, the kinetic energy of the vibration of the power transmission line is converted into the electric energy to supply power to the state monitoring sensor, so that the power supply to the state monitoring sensor can be realized as long as the wire on the power transmission line vibrates, and compared with the power supply mode adopting a battery power supply mode or a solar battery power supply mode and a CT coil power supply mode in the prior art, the power supply to the state monitoring sensor is not influenced by the weather environment and the battery power quantity, the wiring is not needed, the power supply to the state monitoring sensor is fully ensured, the self-sufficiency is realized on the aspect of the electric energy supply to the state monitoring sensor, and the problem of abnormal wire vibration detection caused by unstable power supply is avoided.
As an optional implementation manner, in an embodiment of the present invention, in the step S102, the storing the electric energy in the energy storage module may include:
and S1021, judging whether the real-time voltage of the energy storage module is lower than the energy storage threshold voltage.
As an optional implementation, the charge and discharge control module includes two parts of charge control and discharge control, and is respectively composed of a voltage stabilizing circuit, a voltage dividing circuit, a voltage comparator, a switching device and other main parts. The voltage dividing circuit is provided with an energy storage threshold voltage or a cut-off threshold voltage, the switching device can be a triode or a thyristor, and the like, and can be set according to actual requirements in practical application, and the invention is not limited by the invention.
As an alternative embodiment, in the charging state, the electric energy output from the vibration energy harvesting module is converted into a stable direct current voltage by the voltage stabilizing circuit 3021; a voltage division circuit 3022 composed of resistance elements is used to set an energy storage threshold voltage; the relation between the real-time voltage of the energy storage module and the threshold voltage of the energy storage is compared by the voltage comparator 3023.
And S1022, when the real-time voltage of the energy storage module is lower than the energy storage threshold voltage, continuing to charge the energy storage module.
And S1023, when the real-time voltage of the energy storage module is higher than or equal to the energy storage threshold voltage, stopping charging the energy storage module.
It should be noted that the real-time voltage of the energy storage module is positively correlated with the remaining capacity thereof, that is, the higher the real-time voltage is, the larger the remaining capacity is. The real-time voltage is different from the output voltage which is actually output by the energy storage module and is externally supplied with power, and the output voltage is the voltage which is regulated by the voltage stabilizing circuit or the voltage stabilizer and is generally a fixed value.
As an alternative embodiment, when the real-time voltage of the energy storage module is lower than the energy storage threshold voltage, the switching device 3024 is controlled to be turned on to charge the energy storage module; when the real-time voltage of the energy storage module is higher than or equal to the energy storage threshold voltage, the switching device 3024 is controlled to be switched off, and the energy storage module is stopped being charged.
In the embodiment of the invention, the voltage stabilizing circuit is arranged to keep the input voltage of the charge and discharge control module stable and avoid great loss to the circuit caused by voltage interruption, and the energy storage threshold voltage is arranged in the voltage dividing circuit and used for the voltage comparator to compare the magnitude relation between the real-time voltage of the energy storage module and the energy storage threshold voltage and control the on-off state of the switch device, thereby controlling the charge and discharge state of the energy storage module.
As an optional implementation manner, in the embodiment of the present invention, under a cold start condition, the energy storage module is in a charging state.
As an optional implementation manner, in an embodiment of the present invention, in step S103, the controlling the energy storage module to supply power to the state monitoring sensor may include:
s1031, judging the magnitude relation between the real-time voltage of the energy storage module and a cut-off threshold voltage and the energy storage threshold voltage, wherein the energy storage threshold voltage is greater than the cut-off threshold voltage;
as an alternative embodiment, in the discharging state, the electric energy output from the vibration energy harvesting module is converted into a stable direct current voltage by the voltage stabilizing circuit 3021; the cut-off threshold voltage is set by the voltage dividing circuit 3025 composed of resistance elements, and the relation between the real-time voltage of the energy storage module and the energy storage threshold voltage and the cut-off threshold voltage is compared by the voltage comparator 3026.
S1032, when the real-time voltage of the energy storage module is higher than or equal to the cut-off threshold voltage and lower than the energy storage threshold voltage, maintaining the current discharging state of the energy storage module, wherein the current discharging state comprises a state of supplying power to the state monitoring sensor and a state of stopping supplying power to the state monitoring sensor;
and S1033, when the real-time voltage of the energy storage module is higher than or equal to the energy storage threshold voltage, controlling the energy storage module to discharge so as to supply power to the state monitoring sensor.
S1034, when the real-time voltage of the energy storage module is lower than the cut-off threshold voltage, controlling the energy storage module to stop supplying power to the state monitoring sensor, and stopping detecting the vibration signal of the power transmission line by the state monitoring sensor.
As an alternative embodiment, the real-time voltage of the energy storage module is compared with the energy storage threshold voltage and the cut-off threshold voltage by the voltage comparator 3026, and when the real-time voltage of the energy storage module is higher than or equal to the cut-off threshold voltage and lower than the energy storage threshold voltage, the current discharging state of the energy storage module is maintained, and the current discharging state includes a state of supplying power to the state monitoring sensor and a state of stopping supplying power to the state monitoring sensor; when the real-time voltage of the energy storage module is lower than the cut-off threshold voltage, the switch device 3027 is controlled to be switched off, and the energy storage module is stopped supplying power to the state monitoring sensor; when the real-time voltage of the energy storage module is higher than or equal to the energy storage threshold voltage, the switching device 3027 is controlled to be switched on, the state monitoring sensor is powered by the voltage stabilizing circuit 3028, the state monitoring sensor is driven to work, and the vibration signal of the power transmission line is monitored.
As an optional implementation manner, when the electric energy in the energy storage module discharges from the energy storage threshold voltage to the cut-off threshold voltage, the state monitoring sensor may complete the data acquisition and return full process for more than 2 times.
In the embodiment of the invention, the relation between the real-time voltage of the energy storage module and the energy storage threshold voltage and the cut-off threshold voltage is judged by the charge and discharge control module, and the charge state and the discharge state of the energy storage module are automatically switched, so that the working state of the state monitoring sensor is controlled, and the over-charge or over-discharge condition of the energy storage module is effectively avoided.
As an optional implementation manner, in an embodiment of the present invention, after detecting the vibration signal of the power transmission line by the state monitoring sensor, the method further includes: and sending the vibration signal to a concentrator or a state monitoring background.
In the embodiment of the invention, the vibration signal is uploaded to the state monitoring background through a direct way and an indirect way. For example, when the vibration sensor collects a large number of vibration signals, the concentrator collects the vibration signals uploaded by the state monitoring sensor and uploads the vibration signals to the state monitoring background in a centralized manner; when the vibration sensor collects a small amount of vibration signals, the state monitoring sensor directly uploads the vibration signals to the state monitoring background by using the wireless communication module in the state monitoring sensor after collecting the vibration signals. In practical applications, the setting may be performed according to the actual requirements of the system, and the present invention is not limited thereto.
As an optional implementation manner, in an embodiment of the present invention, a wireless communication module is disposed on the state monitoring sensor, and the sending the vibration signal to a concentrator or a state monitoring background includes: and the vibration signal is sent to a concentrator or a state monitoring background by the wireless communication module in a wireless communication mode.
In the embodiment of the invention, the state monitoring sensor is a wireless acceleration sensor module and comprises an acceleration sensor module and a wireless communication module, wherein the acceleration sensor module is used for collecting vibration signals, and the wireless communication module is used for transmitting the collected vibration signals to the concentrator or the state monitoring background in a wireless signal transmission mode. The acceleration sensing module and the wireless communication module work simultaneously, namely when the state monitoring sensor works, the acceleration sensing module collects vibration signals, and meanwhile, the wireless communication module uploads the vibration signals to the concentrator or the state monitoring sensor in a wireless signal transmission mode; when the state monitoring sensor stops working, the acceleration sensing module stops collecting data, and the wireless communication module stops uploading vibration signals.
Example 2
An embodiment of the present invention provides a device for monitoring a vibration state of a power transmission line, where the device may be used to execute the method for monitoring a vibration state of a power transmission line described in embodiment 1, and as shown in fig. 3, the device includes:
the vibration energy collecting module 301 is arranged on the power transmission line, connected with the energy storage module and used for collecting the vibration kinetic energy of the power transmission line; and converting the kinetic energy into electric energy;
the charging and discharging control module 302 is respectively connected with the vibration energy collecting module and the energy storage module, and is used for storing the electric energy to the energy storage module, controlling the energy storage module to supply power to the state monitoring sensor, and driving the state monitoring sensor to start working;
and the energy storage module 303 is connected with the state monitoring sensor and used for storing the electric energy and supplying power to the state monitoring sensor for detecting the vibration state of the power transmission line.
The state monitoring sensor 304 is arranged on the power transmission line and used for detecting a vibration signal of the power transmission line;
as an optional implementation, the state monitoring sensor is a wireless acceleration sensor, and the wireless acceleration sensor includes:
the acceleration sensor module is used for detecting a vibration signal of the power transmission line;
and the wireless communication module is connected with the acceleration sensor and used for sending the vibration signal in a wireless communication mode.
According to the embodiment of the invention, the kinetic energy of the vibration of the power transmission line is collected through the vibration energy collecting module; converting the kinetic energy into electric energy and storing the electric energy in an energy storage module; the charging and discharging control module controls the energy storage module to supply power to the state monitoring sensor for detecting the vibration of the power transmission line so as to drive the state monitoring sensor to start working; and detecting a vibration signal of the power transmission line through the state monitoring sensor. In the embodiment of the invention, the kinetic energy of the vibration of the power transmission line is converted into the electric energy to supply power to the state monitoring sensor, so that the power supply to the state monitoring sensor can be realized as long as the wire on the power transmission line vibrates, and compared with the power supply mode adopting a battery power supply mode or a solar battery power supply mode and a CT coil power supply mode in the prior art, the power supply to the state monitoring sensor is not influenced by the weather environment and the battery power quantity, the wiring is not needed, the power supply to the state monitoring sensor is fully ensured, the self-sufficiency is realized on the aspect of the electric energy supply to the state monitoring sensor, and the problem of abnormal monitoring of the wire vibration caused by the unstable power supply is.
For a detailed description of the apparatus, reference may be made to the above method embodiments, which are not described herein again.
Example 3
An embodiment of the present invention provides a system for monitoring a vibration state of a power transmission line, and as shown in fig. 5, the apparatus includes:
the device 501 for monitoring the vibration state of the power transmission line according to embodiment 2 is configured to detect a vibration signal on the power transmission line; the power transmission line vibration state monitoring device is used for executing the power transmission line vibration state monitoring method described in the above embodiment 1.
A concentrator 502, which is in communication connection with the vibration state monitoring device, and is configured to collect a vibration signal detected by the vibration state monitoring device;
and the state monitoring background 503 is connected with the concentrator and is used for storing and displaying the vibration signal.
According to the embodiment of the invention, when the power transmission line generates breeze vibration, the vibration signal of the power transmission line is monitored by the vibration state monitoring device and is collected and uploaded by the concentrator, or the vibration signal data is directly uploaded to the state monitoring background by the vibration state monitoring device, and the state monitoring background stores and displays the vibration signal monitoring result. In the embodiment of the invention, the concentrator is used for collecting the uploading data, so that when a large number of vibration signals appear, the vibration signal data can be timely, accurately and completely reported. The vibration signal monitoring result is stored and displayed by the state monitoring background, so that the following workers can inquire and process related data, and compared with the method for continuously monitoring and acquiring vibration data in the prior art, the method and the system provided by the invention can acquire the breeze vibration state information and return the data only when the transmission line generates breeze vibration, thereby greatly reducing the communication frequency and data quantity, avoiding the waste of communication resources, and having the advantages of high reliability, no maintenance, low communication frequency and the like.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. A vibration state monitoring method of a power transmission line is characterized by comprising the following steps:
collecting the kinetic energy of the vibration of the power transmission line;
converting the kinetic energy into electric energy, and storing the electric energy into an energy storage module, wherein the energy storage module is used for supplying power to a state monitoring sensor for detecting the vibration state of the power transmission line;
controlling the energy storage module to supply power to the state monitoring sensor and driving the state monitoring sensor to start working;
and detecting the vibration signal of the power transmission line through the state monitoring sensor.
2. The method of claim 1, wherein storing the electrical energy to an energy storage module comprises:
judging whether the real-time voltage of the energy storage module is lower than an energy storage threshold voltage or not;
when the real-time voltage of the energy storage module is lower than the energy storage threshold voltage, the energy storage module is continuously charged;
and when the real-time voltage of the energy storage module is higher than or equal to the energy storage threshold voltage, stopping charging the energy storage module.
3. The method of claim 1 or 2, wherein the controlling the energy storage module to supply power to the condition monitoring sensor comprises:
judging the magnitude relation between the real-time voltage of the energy storage module and a cut-off threshold voltage and the energy storage threshold voltage, wherein the energy storage threshold voltage is greater than the cut-off threshold voltage;
maintaining a current discharge state of the energy storage module when a real-time voltage of the energy storage module is greater than or equal to the cutoff threshold voltage and less than the energy storage threshold voltage, the current discharge state including a state in which the state monitoring sensor is powered and a state in which the state monitoring sensor is not powered;
and when the real-time voltage of the energy storage module is higher than or equal to the energy storage threshold voltage, controlling the energy storage module to discharge so as to supply power to the state monitoring sensor.
4. The method according to claim 3, wherein when the real-time voltage of the energy storage module is lower than the cut-off threshold voltage, the energy storage module is controlled to stop supplying power to the state monitoring sensor, and the state monitoring sensor stops detecting the vibration signal of the power transmission line.
5. The method of claim 4, wherein the step of converting the kinetic energy into electrical energy and storing the electrical energy into the energy storage module is performed in return when the real-time voltage of the energy storage module is below the cut-off threshold voltage.
6. The method of claim 1, further comprising, after detecting the vibration signal of the power transmission line by the condition monitoring sensor:
and sending the vibration signal to a concentrator or a state monitoring background.
7. The method of claim 6, wherein a wireless communication module is disposed on the condition monitoring sensor, and the sending the vibration signal to a concentrator or a condition monitoring background comprises:
and the vibration signal is sent to a concentrator or a state monitoring background by the wireless communication module in a wireless communication mode.
8. The utility model provides a transmission line's vibration condition monitoring devices which characterized in that includes:
the vibration energy collecting module is arranged on the power transmission line, connected with the energy storage module and used for collecting the vibration kinetic energy of the power transmission line; and converting the kinetic energy into electric energy;
the state monitoring sensor is arranged on the power transmission line and used for detecting a vibration signal of the power transmission line;
the charging and discharging control module is respectively connected with the vibration energy collecting module and the energy storage module and is used for storing the electric energy to the energy storage module, controlling the energy storage module to supply power to the state monitoring sensor and driving the state monitoring sensor to start working;
the energy storage module is connected with the state monitoring sensor and used for storing the electric energy and supplying power to the state monitoring sensor for detecting the vibration state of the power transmission line.
9. The apparatus of claim 8, wherein the condition monitoring sensor is a wireless acceleration sensor comprising:
the acceleration sensor module is used for detecting a vibration signal of the power transmission line;
and the wireless communication module is connected with the acceleration sensor and used for sending the vibration signal in a wireless communication mode.
10. A vibration state monitoring system of a power transmission line is characterized by comprising:
the transmission line vibration status monitoring apparatus of claim 8 or 9, configured to detect a vibration signal on the transmission line;
the concentrator is in communication connection with the vibration state monitoring device and is used for collecting vibration signals detected by the vibration state monitoring device;
and the state monitoring background is connected with the concentrator and used for storing and displaying the vibration signal.
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