CN117452279A - Variable range intelligent ground wire monitoring device and intelligent ground wire monitoring method - Google Patents
Variable range intelligent ground wire monitoring device and intelligent ground wire monitoring method Download PDFInfo
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- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
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- 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
- H02J13/00001—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 the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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Abstract
The utility model discloses a variable journey intelligent earth connection monitoring devices and intelligent earth connection monitoring methods, the variable journey current collection module of device can switch suitable range, GPS positioning module location current geographical position, gyroscope module measurement position appearance, acceleration, and the atmospheric pressure and the temperature of current position, communication system transmits above data to the high in the clouds server, the high in the clouds server is according to the intelligent earth connection monitoring model that the training was accomplished to the data of receiving analysis, obtain optimal current amplification factor and reference voltage, adjust variable journey intelligent earth connection monitoring devices based on optimal current amplification factor and reference voltage, so that variable journey intelligent earth connection monitoring devices have more accurate monitoring results. The monitoring device has the advantages of high measurement precision, large range, low power consumption, long endurance and structuring, can automatically change the range, accurately study and judge and early warning without manual intervention, and solves the problems of wrong hanging, missed hanging, incorrect disassembly, missed disassembly, falling and the like of the grounding wire.
Description
Technical Field
The application relates to the technical field of power equipment monitoring, in particular to a variable range intelligent ground wire monitoring device and an intelligent ground wire monitoring method.
Background
With the continuous increase of the power grid scale and the rapid increase of equipment and the speed increase of modern urban processes, the scale and the number of corresponding power equipment also increase dramatically. In the current electric power overhaul work, an overhaul worker generally uses a portable short-circuit grounding wire for ensuring safety. However, the traditional broken ground wires are difficult to manage due to the large number, and often have the problems of missed hanging, wrong hanging, missed disassembly and the like, so that more and more power companies select to use intelligent ground wires, the intelligent ground wires can be uniformly managed on a background server, and the state of a certain ground wire can be displayed in real time. However, most intelligent grounding wires do not have alarm systems which are not hung in a wrong way, and when the intelligent grounding wires are hung in a wrong way or fall off, the intelligent grounding wires cannot alarm in time.
Disclosure of Invention
The application provides a variable range intelligent ground wire monitoring device and an intelligent ground wire monitoring method to solve the technical problem that the current intelligent ground wire cannot alarm in time when the intelligent ground wire is missed to hang, misplaced and falls off, the induced current of the intelligent ground wire can be acquired more accurately, and the technical effect of early warning on the intelligent ground wire is missed to hang, misplaced and falls off is achieved.
To solve the above technical problem, in a first aspect, the present application provides a variable range intelligent ground wire monitoring device, the device includes: the system comprises a variable range current acquisition module, a GPS positioning module, a gyroscope module, a communication system, a cloud server and a processor;
the variable range current acquisition module is used for switching current amplification factor and reference voltage when sampling is performed according to the instruction of the cloud server and measuring the induced current of the intelligent grounding wire to be detected;
the GPS positioning module is used for positioning the current geographic position of the variable range intelligent ground wire monitoring device;
the gyroscope module is used for measuring the pose, the acceleration and the air pressure and the temperature of the current position of the variable range intelligent ground wire monitoring device;
the communication system is used for uploading the running state of the variable range intelligent ground wire monitoring device and the monitoring data of the variable range current acquisition module, the GPS positioning module and the gyroscope module to a cloud server;
the cloud server is used for receiving and storing the data uploaded by the communication system, analyzing the data and generating the instruction;
the processor is used for judging the working state of the intelligent grounding wire according to the monitoring data of the variable range current acquisition module, the GPS positioning module and the gyroscope module and carrying out early warning on the abnormal working state.
Preferably, the variable range current acquisition module comprises a current transformer, a sampling current mean square value calculation module, an operational amplifier and a comparator, wherein the operational amplifier comprises a first MOS tube, and the comparator comprises a second MOS tube;
the first MOS tube is used for controlling the amplification factor of the operational amplifier according to the instruction of the cloud server;
the second MOS tube is used for controlling the reference voltage of the comparator according to the instruction of the cloud server.
Preferably, the current mean square value calculation module is used for converting the alternating current signal measured by the current transformer into a direct current signal equivalent to the effective value of the alternating current signal;
the amplifier is used for amplifying the direct current signal by corresponding amplification factors and outputting the amplified direct current signal to the comparator and the processor;
the comparator is used for comparing the voltage value corresponding to the amplified direct current signal with a reference voltage, and when the voltage value corresponding to the direct current voltage signal is larger than the reference voltage, the comparator generates an excessive path signal and sends the excessive path signal to the processor.
Preferably, the cloud server comprises an intelligent ground wire monitoring model;
the intelligent ground wire monitoring model is used for generating optimal current amplification factors and reference voltages of the variable range intelligent ground wire monitoring device according to the measurement data of the variable range current acquisition module, the GPS positioning module and the gyroscope module, and generating the instruction based on the optimal current amplification factors and the reference voltages.
Preferably, the intelligent ground wire monitoring model is a neural network model constructed based on BP algorithm.
Preferably, the variable range intelligent ground wire monitoring device further comprises an identity recognition module;
the identification module comprises an encoder, wherein the encoder is used for uniquely matching the object-code of the intelligent grounding wire to be detected and the variable range intelligent grounding wire monitoring device so that the intelligent grounding wire to be detected and the variable range intelligent grounding wire monitoring device have unique identification characteristics;
the editor is also used for uniquely matching the codes of the intelligent grounding wire to be detected and the variable range intelligent grounding wire monitoring device so that the intelligent grounding wire to be detected corresponds to the variable range intelligent grounding wire monitoring device one by one.
In a second aspect, the present application further provides an intelligent ground wire monitoring method, where the method adopts the variable range intelligent ground wire monitoring device, and the method includes: the variable range intelligent grounding wire monitoring device is used for acquiring corresponding characteristic data of the intelligent grounding wire in different working states, wherein the characteristic data comprise the magnitude of induced current, the change tendency of the induced current, the change speed, the pose and the acceleration of the induced current, and the current geographic position, the current air pressure and the current temperature;
taking the characteristic data as input of a neural network model constructed based on a BP algorithm, measuring the amplification factor and reference voltage of a variable range intelligent ground wire monitoring device corresponding to the characteristic data as output, so as to train the neural network model and acquire an intelligent ground wire monitoring model;
acquiring characteristic data of an intelligent ground wire to be monitored through the variable range intelligent ground wire monitoring device, inputting the characteristic data of the intelligent ground wire to be monitored into the intelligent ground wire monitoring model, acquiring optimal current amplification factor and reference voltage of the variable range intelligent ground wire monitoring device, and adjusting the amplification factor and the reference voltage of the variable range intelligent ground wire monitoring device based on the optimal current amplification factor and the reference voltage;
and monitoring the state of the intelligent grounding wire according to the adjusted variable range intelligent grounding wire monitoring device.
Preferably, the adjusting the amplification factor and the reference voltage of the variable range intelligent ground wire monitoring device based on the optimal current amplification factor and the reference voltage includes:
calculating equivalent resistances of a first MOS tube and a second MOS tube in the variable range intelligent ground wire monitoring device according to the optimal current amplification factor and the reference voltage;
and the equivalent resistors of the first MOS tube and the second MOS tube are sent to a processor of the variable range intelligent ground wire monitoring device, and the processor controls the base voltage of the first MOS tube and the base voltage of the second MOS tube so that the equivalent resistors of the first MOS tube and the second MOS tube are changed.
Preferably, the calculation formula of the equivalent resistance of the first MOS transistor is:
wherein,representing the optimal current amplification factor; r is R 2 ,R 3 Representing the resistance value;
the calculation formula of the equivalent resistance of the second MOS tube is as follows:
wherein V is ref1 Representing an optimal reference voltage; r is R 4 ,R 5 Is a resistance value.
Preferably, the monitoring of the state of the intelligent ground wire according to the adjusted variable range intelligent ground wire monitoring device includes:
the GPS positioning module measures the current geographical position of the variable range intelligent grounding wire monitoring device, compares the current position with a preset position, and generates a state that the intelligent grounding wire to be monitored drops and is displaced when the comparison value is larger than a first threshold value;
the gyroscope module measures the pose and the acceleration of the variable range intelligent ground wire monitoring device, and when the sum of the triaxial accelerations is smaller than a second threshold value, the state that the intelligent ground wire to be monitored drops is generated;
the variable range current acquisition module outputs an excessive range signal to generate a state of abnormal abrupt change of the induction current of the intelligent grounding wire to be monitored;
the variable range current acquisition module outputs induction current, and when the induction current is larger than a third threshold value, the state of abnormal abrupt change of the induction current of the intelligent grounding wire to be monitored is generated;
and the variable range current acquisition module does not output induced current, and generates the state of the intelligent grounding wire to be monitored in an induction falling-off mode.
The utility model provides a variable range intelligent ground wire monitoring devices and intelligent ground wire monitoring methods, the device passes through the sensing current of variable current collection module selection suitable range accurate measurement to wait to detect intelligent ground wire, position the current geographical position of variable range intelligent ground wire monitoring devices through GPS positioning module, position appearance, acceleration, the atmospheric pressure and the temperature of current position of measuring range intelligent ground wire monitoring devices through gyroscope module measurement range intelligent ground wire monitoring devices, transmit above data to the high in the clouds server through communication system, so that the high in the clouds server carries out analysis to the data of receipt according to the intelligent ground wire monitoring model that the training was accomplished, obtain the optimal current amplification factor and the reference voltage of variable range intelligent ground wire monitoring devices, generate the instruction based on optimal current amplification factor and reference voltage, be used for adjusting variable range intelligent ground wire monitoring devices, so that variable range intelligent ground wire monitoring devices have more accurate monitoring results. The variable range intelligent ground wire monitoring device provided by the application has the advantages of high measurement precision, large range, low power consumption, long endurance and structuring, and can automatically change the range and accurately study and judge on the basis of a neural network model without manual intervention. The utility model discloses a variable range intelligent ground wire monitoring device provides an intelligent ground wire monitoring method, can realize the dislocation early warning to intelligent ground wire, drop early warning, solves ground wire mistake and hangs, leaks and hangs, the mistake is torn open, leaks to tear open, drop scheduling problem.
Drawings
FIG. 1 is a schematic diagram of a variable range intelligent ground wire monitoring device according to a preferred embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a variable path current collection module according to a preferred embodiment of the present application;
FIG. 3 is a schematic diagram of an intelligent ground wire monitoring method according to a preferred embodiment of the present application;
fig. 4 is a schematic diagram of a method for calculating equivalent resistance of a MOS transistor according to a preferred embodiment of the present application.
Detailed Description
The following detailed description of the embodiments of the present application is provided for illustrative purposes only and is not to be construed as limiting the application, including the drawings, which are for reference and description only, and do not limit the scope of the patent application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
For solving the technical problem that current intelligent earth connection is when leaking to hang, misplace and drop, can't in time report to the police, this application embodiment provides a variable range intelligent earth connection monitoring devices, the induced current of collection intelligent earth connection that can be more accurate realizes leaking to hang, misplace and drop to intelligent earth connection and carries out the technological effect of early warning.
Referring to fig. 1, in an embodiment of the present application, the apparatus includes; the system comprises a variable range current acquisition module 1, a GPS positioning module 2, a gyroscope module 3, a communication system 4, a cloud server 5 and a processor 6.
In the preferred embodiment of the application, the provided variable range intelligent ground wire monitoring device adopts a small integrated design on the basis of not changing the appearance and the operation method of an intelligent ground wire clamp and an operation rod, and is additionally provided with intelligent sensing devices such as a variable range current acquisition module 1, a GPS positioning module 2, a gyroscope module 3 and the like.
The variable range current acquisition module 1, the GPS positioning module 2 and the gyroscope module 3 are connected with the processor 6, and the processor 6 performs information transmission with the cloud server 5 through the communication system 4.
Further, the variable range current acquisition module 1 is used for measuring the induced current in the intelligent grounding wire to be detected, so as to monitor the hooking state of the intelligent grounding wire. Meanwhile, the current amplification factor and the reference voltage during sampling can be switched according to the instruction of the cloud server 5, so that the variable-range current acquisition module 1 works in a large amplification factor, namely a small-range state when a sampling signal is small, the sampling is more sensitive in the state, and the current resolution can reach 0.002A. The current acquisition module 1 with larger time-varying measuring range of the sampled current signal works in a small amplification factor, namely a large-measuring range state, so as to measure larger induced current, and the maximum measuring range is 0-50A.
For the variable path current acquisition module 1, as shown in fig. 2, the variable path current acquisition module includes a current transformer 101, a sampling current mean square value calculation module 102, an operational amplifier 103 and a comparator 104, where the operational amplifier 103 includes a first MOS tube 105, and the comparator 104 includes a second MOS tube 106. The current transformer 101 is used for measuring the induction current of the intelligent grounding wire, after the induction current is acquired, the alternating current signal is converted into a direct current signal equivalent to the effective value of the alternating current signal through the sampling current mean square value calculation module 102, and the calculation formula is as follows:
wherein V is IN Representing the input ac signal; v (V) rms A root mean square value representing the input signal; avg represents averaging.
The first MOS transistor 105 and the second MOS transistor 106 both work in the variable resistor area, the first MOS transistor 105 is used for controlling the amplification factor of the operational amplifier 103 according to the instruction of the cloud server 5, and the second MOS transistor 106 is used for controlling the reference voltage of the comparator 104 according to the instruction of the cloud server 5. As shown in fig. 2, by changing the base voltages B1 and B2, the magnitudes of the equivalent resistances of the first MOS transistor 105 and the second MOS transistor 106 are controlled, so that the amplification factor of the operational amplifier 103 and the reference voltage of the comparator 104 are changed.
The direct current signal output by the sampling current mean square value calculation module 102 is amplified by the operational amplifier 103, the amplified direct current signal is used as an induced current sampling value of the variable range current acquisition module 1 to be output to the processor 6 on one hand, and is output to the comparator 104 on the other hand for comparison with a reference voltage, when the voltage value corresponding to the amplified direct current signal is larger than the reference voltage, the comparator 104 generates an overscan signal to indicate that abnormal mutation exists in the induced current of the intelligent grounding wire, the overscan signal is transmitted to the processor, and the processor generates a state of the abnormal mutation of the induced current of the intelligent grounding wire to be detected and performs timely early warning and reporting.
Further, for determining and controlling the amplification factor of the operational amplifier 103 and the reference voltage of the comparator 104, in the present application, the base voltages B1 and B2 are controlled by the magnitude instruction of the equivalent resistance of the first MOS transistor 105 and the second MOS transistor 106 issued by the cloud server 5, so that the operational amplifier 103 and the comparator 104 have initial amplification factor parameters and reference voltage parameters. However, the initial amplification factor parameter and the reference voltage parameter are not necessarily accurate, and in the preferred implementation of the present application, the intelligent ground line monitoring model of the cloud server 5 is used to obtain the optimal current amplification factor and the reference voltage, and a new instruction is generated based on the optimal current amplification factor and the reference voltage to adjust the amplification factor parameter and the reference voltage parameter of the operational amplifier 103 and the comparator 104.
In the preferred embodiment of the application, for the intelligent ground wire monitoring model, a neural network model constructed based on BP algorithm is adopted, and the variable range intelligent ground wire monitoring device provided by the application is additionally provided with a GPS positioning module 2, a gyroscope module 3 and a communication system 4. The communication system 4 is used for uploading the operation state of the variable range intelligent ground wire monitoring device and the monitoring data of the variable range current acquisition module 1, the GPS positioning module 2 and the gyroscope module 3 to the cloud server 5. The cloud server 5 receives and stores the data uploaded by the communication system 4, and analyzes the data through the intelligent ground wire monitoring model to generate an instruction.
The GPS positioning module 2 is used for positioning the current geographic location of the variable range intelligent ground wire monitoring device, namely the current latitude and longitude of the intelligent ground wire monitoring device. The gyroscope module 3 is used for measuring the pose, acceleration and air pressure and temperature of the current position of the measuring range intelligent ground wire monitoring device. The communication system 4 is used for uploading the operation state of the variable range intelligent ground wire monitoring device and the monitoring data of the variable range current acquisition module 1, the GPS positioning module 2 and the gyroscope module 3 to the cloud server 5.
For the intelligent ground wire monitoring model, a neural network structure of the neural network is determined for the neural network model constructed based on the BP algorithm, and parameter values of the neural network structure are determined through a training learning method so as to obtain the intelligent ground wire monitoring model, and the method specifically comprises the following steps of:
s01, constructing neural network model based on BP algorithm
Determining a network structure of a neural network model, wherein the network structure in the neural network model is three layers, and comprises an input layer, a hidden layer and an output layer, and the neuron number p of the hidden layer is determined by a formula:
wherein: p represents the number of neurons, m represents the number of input layer nodes, n represents the number of output layer nodes, and a represents a constant between 1 and 10.
The weights w and offsets b in the neural network model are initialized. Randomization is generally used.
A loss function is set. The loss function formula is:
wherein,representing the output of the neural network model, y i Representing the expected value.
The maximum error parameter and the learning rate are selected. Wherein, the learning rate is a value between 0.01 and 0.1.
Using a Sigmoid function as an activation function, the Sigmoid function is:
s02, acquiring corresponding characteristic data of the intelligent grounding wire in different working states through a variable range intelligent grounding wire monitoring device, and training the neural network model according to the characteristic data.
In this embodiment of the present application, the acquired feature data at least includes: the magnitude of the induced current, the change tendency of the induced current, the change speed, the pose and the acceleration of the induced current, and the current geographic position, the air pressure and the current temperature. The change trend of the induced current and the change speed of the induced current are calculated by the change of the magnitude of the induced current. Constructing the characteristic data obtained above into a matrix x= (X) 1 ,x 2 ,...,x m ) As the input of the neural network model, the amplification factor and the reference voltage of the variable range intelligent ground wire monitoring device corresponding to the measurement characteristic data are taken as the output expected value Y= (Y) 1 ,y 2 )，y 1 For current sampling magnification, y 2 Is the magnitude of the reference voltage to train the neural network model.
The calculation formula of each neuron output of the neural network model is as follows:
wherein,representing the output value of neurons, q i Represents the ith input value, w, of the neuron i Representing the weight, b representing the bias, σ representing the activation function.
Calculating and obtaining a neural network model calculation output result by each neuronCalculating a loss function based on the output result>
Because the initial parameters are not optimal, the actual output result has errors with the expected output result, in order to reduce the errors, the parameters need to be iteratively updated, and the minimum value of the loss function is found, in the embodiment of the application, the parameters are updated by adopting a gradient descent method, which specifically comprises the following steps:
calculating the gradient of the weight value and the bias value:
wherein,respectively represent the weight value w at the kth iteration k And offset value b k L represents the loss function.
The weight value and the bias value of the neural network model are continuously adjusted through back propagation and iteration, and the updating formula is as follows:
wherein w is k ,w k+1 The weight values of the kth and the (k+1) th times in the neural network are respectively; b k ,b k+1 The kth and the (k+1) th times in the neural network respectivelyA bias value; η is the learning rate;weight value w at the kth iteration k And offset value b k Is a gradient of (a).
And substituting the weight value and the bias value into the neural network model after updating, repeating training, selecting the model with the minimum loss function value as an optimal network model, and taking the model as an intelligent ground wire monitoring model.
When the intelligent ground wire is measured, the collected monitoring data of the variable range current collection module 1, the GPS positioning module 2 and the gyroscope module 3 are uploaded to the cloud server 5, and are input into an intelligent ground wire monitoring model of the cloud server 5, so that the optimal amplification factor and the reference voltage of the variable range intelligent ground wire monitoring device are obtained. The self equivalent resistance of the first MOS tube 105 and the second MOS tube 106 is obtained based on the optimal amplification factor and the reference voltage, and is sent to the processor 6 of the variable range intelligent ground wire monitoring device in a command mode, and the processor 6 controls the output voltage of the chip pins, namely the magnitudes of the base voltages B1 and B2, so that the equivalent resistance of the first MOS tube 105 and the second MOS tube 106 is changed.
In the preferred embodiment of the present application, the processor 6 adopts an STM32 processor, which is configured to determine the working state of the intelligent grounding wire according to the monitoring data of the variable range current acquisition module 1, the GPS positioning module 2 and the gyroscope module 3, and perform early warning on the abnormal working state.
In the preferred embodiment of the present application, the variable path intelligent ground wire monitoring device further includes an identity recognition module 7, the identity recognition module 7 includes an encoder 701, and the encoder 701 is configured to uniquely match "object-code" of the to-be-detected intelligent ground wire and the variable path intelligent ground wire monitoring device, so that the to-be-detected intelligent ground wire and the variable path intelligent ground wire monitoring device have unique identity recognition features;
the editor 701 is further configured to uniquely match "codes" of the to-be-detected intelligent ground wire and the variable range intelligent ground wire monitoring device, so that the to-be-detected intelligent ground wire and the variable range intelligent ground wire monitoring device are in one-to-one correspondence.
The intelligent ground wire and the variable range intelligent ground wire monitoring device are subjected to unique matching of 'object-code' through the identity recognition module 7, intelligent management and one-to-one association matching of the intelligent ground wire and the variable range intelligent ground wire monitoring device are realized, and the manpower requirements for monitoring and managing the intelligent ground wire are reduced.
The variable range intelligent ground wire monitoring device provided in the embodiment of the application further comprises a power supply system 8 and a clamping module 9. The power supply system 8 is used for providing power support for the variable range current acquisition module 1, the GPS positioning module 2, the gyroscope module 3, the communication system 4, the cloud server 5 and the processor 6, and guaranteeing the low-power consumption long-time online monitoring operation of the device.
The clamping module 9 is fixed outside the device shell and used for being connected with an intelligent grounding wire.
To sum up, the technical problem that the prior intelligent grounding wire cannot give an alarm in time when the prior intelligent grounding wire is in missed hanging, misplaced hanging and falling off is solved. The device selects proper measuring range through a variable current acquisition module to accurately measure the induction current of the intelligent ground wire to be detected, positions the current geographic position of the variable range intelligent ground wire monitoring device through a GPS positioning module, measures the pose, acceleration and the air pressure and the temperature of the current position of the variable range intelligent ground wire monitoring device through a gyroscope module, and transmits the data to a cloud server through a communication system, so that the cloud server analyzes the received data according to the intelligent ground wire monitoring model after training to obtain the optimal current amplification factor and reference voltage of the variable range intelligent ground wire monitoring device, and generates an instruction based on the optimal current amplification factor and the reference voltage to adjust the variable range intelligent ground wire monitoring device so as to enable the variable range intelligent ground wire monitoring device to have a more accurate monitoring result. The variable range intelligent ground wire monitoring device provided by the application is high in measurement accuracy, large in range, low in power consumption, long in endurance and structured, can automatically change the range and accurately judge based on a neural network model without manual intervention, achieves dislocation early warning and falling early warning on an intelligent ground wire, and solves the problems of mishanging, missed hanging, misdisassembly, missed disassembly, falling and the like of the ground wire.
Correspondingly, as shown in fig. 3, based on a variable range intelligent ground wire monitoring device, the embodiment of the invention also provides a method for monitoring the ground wire, and the method adopts the variable range intelligent ground wire monitoring device provided in the embodiment of the application, and comprises the following steps:
s1, acquiring corresponding characteristic data of the intelligent grounding wire in different working states through the variable range intelligent grounding wire monitoring device, wherein the characteristic data comprise the magnitude of induced current, the change tendency of the induced current, the change speed, the pose and the acceleration of the induced current, and the current geographic position, the air pressure and the current temperature.
S2, taking the characteristic data as input of a neural network model constructed based on a BP algorithm, and measuring the amplification factor and the reference voltage of the variable range intelligent ground wire monitoring device corresponding to the characteristic data as output so as to train the neural network model and acquire the intelligent ground wire monitoring model.
S3, acquiring characteristic data of the intelligent grounding wire to be monitored through the variable range intelligent grounding wire monitoring device, inputting the characteristic data of the intelligent grounding wire to be monitored into the intelligent grounding wire monitoring model, acquiring optimal current amplification factor and reference voltage of the variable range intelligent grounding wire monitoring device, and adjusting the amplification factor and the reference voltage of the variable range intelligent grounding wire monitoring device based on the optimal current amplification factor and the reference voltage.
S4, monitoring the state of the intelligent grounding wire according to the adjusted variable range intelligent grounding wire monitoring device.
In the embodiment of the application, the variable range intelligent ground wire monitoring device disclosed in the embodiment of the application is deployed, corresponding characteristic data under different working states are collected, and the characteristic data are formed into an input matrix X= (X) 1 ,x 2 ,...,x m ). Training a neural network model constructed based on a BP algorithm using characteristic data measured in various states as a sample set, grouping the sample set into a training set and a validation set, and grouping the training setThe input matrix of (a) is taken as input, and the corresponding output expected value is Y= (Y) 1 ,y 2 )，y 1 For measuring the current sampling magnification, y corresponding to the characteristic data 2 And training the neural network model for the reference voltage corresponding to the quantity characteristic data, updating and iterating parameters of the neural network model, and selecting a model with the minimum loss function value of the neural network model as an optimal neural network model to obtain an intelligent ground wire monitoring model. The specific process of building and training the intelligent ground wire monitoring model is not repeated, and specific limitation can be referred to the limitation of the variable range intelligent ground wire monitoring device.
As shown in fig. 4, in the embodiment of the present application, the adjusting the amplification factor and the reference voltage of the variable path intelligent ground line monitoring device based on the optimal current amplification factor and the reference voltage includes:
s301, calculating equivalent resistances of a first MOS tube and a second MOS tube in the variable range intelligent ground wire monitoring device according to the optimal current amplification factor and the reference voltage;
s302, equivalent resistances of the first MOS tube and the second MOS tube are sent to a processor of the variable range intelligent ground wire monitoring device, and the processor controls the base voltage of the first MOS tube and the base voltage of the second MOS tube so that the equivalent resistances of the first MOS tube and the second MOS tube change.
In the embodiment of the application, for adjustment of the amplification factor and the reference voltage of the variable range intelligent ground wire monitoring device, the cloud server calculates equivalent resistances of the first MOS tube and the second MOS tube in the variable range intelligent ground wire monitoring device according to the optimal current amplification factor and the reference voltage. As shown in fig. 2, the structural schematic diagram of the variable range current collection module, according to the circuit layout, the calculation formula for the equivalent resistance of the first MOS transistor is:
wherein,representing the optimal current amplification factor; r is R 2 ,R 3 Representing the resistance value;
the calculation formula for the equivalent resistance of the second MOS transistor is as follows:
wherein V is ref1 Representing an optimal reference voltage; r is R 4 ,R 5 Is a resistance value.
In a preferred embodiment of the present application, as shown in fig. 4, the state of the intelligent ground wire is monitored according to the adjusted variable range intelligent ground wire monitoring device, which includes the following concentrated situations:
(1) the GPS positioning module measures the current geographical position of the variable range intelligent grounding wire monitoring device, compares the current position with a preset position, and generates a state that the intelligent grounding wire to be monitored drops and is displaced when the comparison value is larger than a first threshold value;
(2) the gyroscope module measures the pose and the acceleration of the variable range intelligent ground wire monitoring device, and when the sum of the triaxial accelerations is smaller than a second threshold value, the state that the intelligent ground wire to be monitored drops is generated;
(3) the variable range current acquisition module outputs an excessive range signal to generate a state of abnormal abrupt change of the induction current of the intelligent grounding wire to be monitored;
(4) and the variable range current acquisition module outputs induction current, and when the induction current is greater than a third threshold value, the state of abnormal abrupt change of the induction current of the intelligent grounding wire to be monitored is generated.
(5) And the variable range current acquisition module does not output induced current, and generates the state of the intelligent grounding wire to be monitored in an induction falling-off mode.
In the preferred embodiment of the application, the measurement data of the adjusted variable range intelligent ground wire monitoring device is analyzed to generate a corresponding intelligent ground wire result to be monitored. And comparing the geographic position data measured by the GPS positioning module with the preset position of the variable range intelligent ground wire monitoring device, and when the comparison value is larger than a first threshold value, indicating that the intelligent ground wire falls off and is displaced, and timely reporting and early warning are carried out by a processor of the variable range intelligent ground wire monitoring device. And the measured data of the gyroscope of the variable range intelligent ground wire monitoring device comprises the pose and the acceleration of the variable range intelligent ground wire monitoring device, the triaxial acceleration sum is calculated and compared with a second threshold value, and when the triaxial acceleration sum is smaller than the second threshold value, the intelligent ground wire to be monitored is indicated to fall off. And outputting an excessive path signal to a variable path current acquisition module of the variable path intelligent ground wire monitoring device, wherein the excessive path signal indicates that the induced current of the intelligent ground wire to be monitored has abnormal mutation. And for the induction current output by the variable range current acquisition module of the variable range intelligent ground wire monitoring device, if no output current exists, the intelligent ground wire to be monitored is indicated to fall off, and if the induction current is larger than a threshold value, the induction current of the intelligent ground wire to be monitored is indicated to have abnormal mutation. Through the logic judgment, the state of the intelligent grounding wire to be monitored can be monitored and early-warned.
According to the variable range intelligent ground wire monitoring device provided by the embodiment, the device accurately measures the induction current of the intelligent ground wire to be detected through the variable current acquisition module, the current geographic position of the variable range intelligent ground wire monitoring device is positioned through the GPS positioning module, the pose, the acceleration and the air pressure and the temperature of the current position of the variable range intelligent ground wire monitoring device are measured through the gyroscope module, the data are transmitted to the cloud server through the communication system, so that the cloud server analyzes the received data according to the intelligent ground wire monitoring model after training, the optimal current amplification factor and the reference voltage of the variable range intelligent ground wire monitoring device are obtained, and an instruction is generated based on the optimal current amplification factor and the reference voltage for adjusting the variable range intelligent ground wire monitoring device, so that the variable range intelligent ground wire monitoring device has a more accurate monitoring result. The variable range intelligent ground wire monitoring device provided by the application has the advantages of high measurement precision, large range, low power consumption, long endurance and structuring, and can automatically change the range and accurately study and judge on the basis of a neural network model without manual intervention. The utility model discloses a variable range intelligent ground wire monitoring device provides an intelligent ground wire monitoring method, can realize the dislocation early warning to intelligent ground wire, drop early warning, solves ground wire mistake and hangs, leaks and hangs, the mistake is torn open, leaks to tear open, drop scheduling problem.
The foregoing examples represent only a few preferred embodiments of the present application, which are described in more detail and are not thereby to be construed as limiting the scope of the invention. It should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and such modifications and substitutions should also be considered to be within the scope of the present application. Therefore, the protection scope of the patent application is subject to the protection scope of the claims.
Claims (10)
1. Variable range intelligent ground wire monitoring device, its characterized in that, the device includes: the system comprises a variable range current acquisition module, a GPS positioning module, a gyroscope module, a communication system, a cloud server and a processor;
the variable range current acquisition module is used for switching current amplification factor and reference voltage when sampling is performed according to the instruction of the cloud server and measuring the induced current of the intelligent grounding wire to be detected;
the GPS positioning module is used for positioning the current geographic position of the variable range intelligent ground wire monitoring device;
the gyroscope module is used for measuring the pose, the acceleration and the air pressure and the temperature of the current position of the variable range intelligent ground wire monitoring device;
the communication system is used for uploading the running state of the variable range intelligent ground wire monitoring device and the monitoring data of the variable range current acquisition module, the GPS positioning module and the gyroscope module to a cloud server;
the cloud server is used for receiving and storing the data uploaded by the communication system, analyzing the data and generating the instruction;
the processor is used for judging the working state of the intelligent grounding wire according to the monitoring data of the variable range current acquisition module, the GPS positioning module and the gyroscope module and carrying out early warning on the abnormal working state.
2. The variable path intelligent ground wire monitoring device according to claim 1, wherein the variable path current acquisition module comprises a current transformer, a sampling current mean square value calculation module, an operational amplifier and a comparator, the operational amplifier comprises a first MOS tube, and the comparator comprises a second MOS tube;
the first MOS tube is used for controlling the amplification factor of the operational amplifier according to the instruction of the cloud server;
the second MOS tube is used for controlling the reference voltage of the comparator according to the instruction of the cloud server.
3. The variable range intelligent ground wire monitoring device according to claim 2, wherein the current mean square value calculation module is used for converting an alternating current signal measured by the current transformer into a direct current signal equivalent to an effective value of the alternating current signal;
the amplifier is used for amplifying the direct current signal by corresponding amplification factors and outputting the amplified direct current signal to the comparator and the processor;
the comparator is used for comparing the voltage value corresponding to the amplified direct current signal with a reference voltage, and when the voltage value corresponding to the direct current voltage signal is larger than the reference voltage, the comparator generates an excessive path signal and sends the excessive path signal to the processor.
4. The variable range intelligent ground wire monitoring device of claim 1, wherein the cloud server comprises an intelligent ground wire monitoring model;
the intelligent ground wire monitoring model is used for generating optimal current amplification factors and reference voltages of the variable range intelligent ground wire monitoring device according to the measurement data of the variable range current acquisition module, the GPS positioning module and the gyroscope module, and generating the instruction based on the optimal current amplification factors and the reference voltages.
5. The variable range intelligent ground wire monitoring device according to claim 1, wherein the intelligent ground wire monitoring model is a neural network model constructed based on a BP algorithm.
6. The variable path intelligent ground wire monitoring device of claim 1, further comprising an identity recognition module;
the identification module comprises an encoder, wherein the encoder is used for uniquely matching the object-code of the intelligent grounding wire to be detected and the variable range intelligent grounding wire monitoring device so that the intelligent grounding wire to be detected and the variable range intelligent grounding wire monitoring device have unique identification characteristics;
the editor is also used for uniquely matching the codes of the intelligent grounding wire to be detected and the variable range intelligent grounding wire monitoring device so that the intelligent grounding wire to be detected corresponds to the variable range intelligent grounding wire monitoring device one by one.
7. An intelligent ground wire monitoring method, which adopts the variable range intelligent ground wire monitoring device as claimed in claims 1-6, and is characterized in that the method comprises the following steps:
the variable range intelligent grounding wire monitoring device is used for acquiring corresponding characteristic data of the intelligent grounding wire in different working states, wherein the characteristic data comprise the magnitude of induced current, the change tendency of the induced current, the change speed, the pose and the acceleration of the induced current, and the current geographic position, the current air pressure and the current temperature;
taking the characteristic data as input of a neural network model constructed based on a BP algorithm, measuring the amplification factor and reference voltage of a variable range intelligent ground wire monitoring device corresponding to the characteristic data as output, so as to train the neural network model and acquire an intelligent ground wire monitoring model;
acquiring characteristic data of an intelligent ground wire to be monitored through the variable range intelligent ground wire monitoring device, inputting the characteristic data of the intelligent ground wire to be monitored into the intelligent ground wire monitoring model, acquiring optimal current amplification factor and reference voltage of the variable range intelligent ground wire monitoring device, and adjusting the amplification factor and the reference voltage of the variable range intelligent ground wire monitoring device based on the optimal current amplification factor and the reference voltage;
and monitoring the state of the intelligent grounding wire according to the adjusted variable range intelligent grounding wire monitoring device.
8. The intelligent ground wire monitoring method according to claim 7, wherein the adjusting the amplification factor and the reference voltage of the variable range intelligent ground wire monitoring device based on the optimal current amplification factor and the reference voltage comprises:
calculating equivalent resistances of a first MOS tube and a second MOS tube in the variable range intelligent ground wire monitoring device according to the optimal current amplification factor and the reference voltage;
and the equivalent resistors of the first MOS tube and the second MOS tube are sent to a processor of the variable range intelligent ground wire monitoring device, and the processor controls the base voltage of the first MOS tube and the base voltage of the second MOS tube so that the equivalent resistors of the first MOS tube and the second MOS tube are changed.
9. The intelligent ground wire monitoring method of claim 8, wherein the calculation formula of the equivalent resistance of the first MOS transistor is:
wherein,representing the optimal current amplification factor; r is R 2 ,R 3 Representing the resistance value;
the calculation formula of the equivalent resistance of the second MOS tube is as follows:
wherein V is ref1 Representing an optimal reference voltage; r is R 4 ,R 5 Is a resistance value.
10. The intelligent ground wire monitoring method according to claim 7, wherein the monitoring the state of the intelligent ground wire according to the adjusted variable range intelligent ground wire monitoring device comprises:
the GPS positioning module measures the current geographical position of the variable range intelligent grounding wire monitoring device, compares the current position with a preset position, and generates a state that the intelligent grounding wire to be monitored drops and is displaced when the comparison value is larger than a first threshold value;
the gyroscope module measures the pose and the acceleration of the variable range intelligent ground wire monitoring device, and when the sum of the triaxial accelerations is smaller than a second threshold value, the state that the intelligent ground wire to be monitored drops is generated;
the variable range current acquisition module outputs an excessive range signal to generate a state of abnormal abrupt change of the induction current of the intelligent grounding wire to be monitored;
the variable range current acquisition module outputs induction current, and when the induction current is larger than a third threshold value, the state of abnormal abrupt change of the induction current of the intelligent grounding wire to be monitored is generated;
and the variable range current acquisition module does not output induced current, and the state that the intelligent grounding wire to be monitored drops is generated.
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| CN117851910B (en) * | 2024-03-07 | 2024-06-11 | 国网吉林省电力有限公司延边供电公司 | Self-sensing method and system for hooking and dismantling novel intelligent grounding device of power transmission line |
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