Electricity verification control method and system for ultra-high voltage transmission line

Abstract

The invention discloses an extra-high voltage power transmission line electricity testing control method and system, and the method comprises the steps: analyzing the obtained electric energy transmission data of each line node, and generating an electricity testing control parameter; before the aerial flight electricity testing device arrives at each line node and starts to test electricity, the electricity testing control parameters are sent to the aerial flight electricity testing device; the working state of an internal electric field sensor is adjusted according to the corresponding electricity testing control parameters; coupling the measured space stray capacitance between the electric field sensor and the line node to obtain an induced electric field signal; performing preset signal identification processing on the induced electric field signal, and generating an electricity testing grade indication signal reflecting the current line node; and generating a control alarm strategy according to the electricity testing grade indication signal. According to the electricity testing control method and system for the ultra-high voltage power transmission line, on one hand, the accuracy of electricity testing detection is improved, and on the other hand, the intelligent process of electricity testing control of a power grid is promoted.

Description

Technical Field

[0001] The present invention relates to the technical field of ultra-high voltage transmission line detection, and in particular to an ultra-high voltage transmission line power detection control method and system. Background Art

[0002] With the development of urban construction, the power system is becoming more and more complex. In actual operation, there is a high failure rate at the power connection. In order to ensure the efficient and safe repair and maintenance of each ultra-high voltage transmission line, higher requirements are also put forward for the standardization, speed and scientificity of the detection and testing of ultra-high voltage transmission lines.

[0003] At present, the traditional ultra-ultra-high voltage transmission line inspection and testing is handled manually, which requires operators to wear insulating gloves to operate the live ultra-ultra-high voltage transmission line identification instrument. This places high physical requirements on the operators, is inconvenient to operate, and is easy to cause phase-to-phase short circuit when the insulation shielding is insufficient. At the same time, the direct operation of the human body is easy to pose a threat to the safety of the operators. Secondly, the traditional inspection and testing of ultra-ultra-high voltage transmission lines does not take into account the node differences of the transmission lines, which can easily cause inaccurate measurement results, and even serious situations such as false alarms and missed alarms. Summary of the invention

[0004] The present invention provides an ultra-high voltage transmission line power test control method and system, which not only solves the technical problem that the existing power test relies on manual work, but also takes the node differences of the transmission line into consideration and adjusts the control parameters of the power test in real time during the power test process, thereby improving the accuracy of the power test on the one hand and promoting the intelligentization of power grid power test control on the other hand.

[0005] In order to solve the above technical problems, an embodiment of the present invention provides an ultra-high voltage transmission line power test control method, which is applied to test a transmission line composed of a number of line nodes by an aerial flying power test device. The method includes:

[0006] Analyze the acquired power transmission data of each of the line nodes to generate power test control parameters matching the data;

[0007] Before the aerial flying electrical testing device arrives at each of the line nodes and starts to test the line nodes, the corresponding electrical testing control parameters are sent to the aerial flying electrical testing device;

[0008] Controlling the aerial flying electrical testing device to adjust the working state of the electric field sensor inside it with the corresponding electrical testing control parameters;

[0009] After detecting that the electric field sensor reaches a target working state, coupling the measured spatial stray capacitance between the electric field sensor and the line node to obtain an induced electric field signal;

[0010] Performing a preset signal recognition process on the induced electric field signal, and generating an electric test level indication signal reflecting the current line node according to the processing result;

[0011] According to the electrical inspection level indication signal, a control alarm strategy matching the electrical inspection level indication signal is generated.

[0012] As one preferred solution, the electric field sensor is an optical electric field sensor;

[0013] The controlling the aerial flying electrical testing device to adjust the working state of the electric field sensor therein with the corresponding electrical testing control parameter comprises:

[0014] Based on the pre-selected sample set, constructing an electro-optical crystal physical model corresponding to the optical electric field sensor;

[0015] By analyzing the electric field distribution data output by the electro-optical crystal physical model, a correlation curve between the relative dielectric constant of the electro-optical crystal and the measurement sensitivity is obtained;

[0016] Converting the electrical test control parameter to obtain the relative dielectric constant of the target electro-optical crystal;

[0017] According to the relative dielectric constant of the target electro-optical crystal and the correlation curve, a first sensitivity level corresponding to the optical electric field sensor is determined, and the working state of the optical electric field sensor is adjusted according to the first sensitivity level.

[0018] As one preferred solution, the electric field sensor is an inductive sensor;

[0019] The controlling the aerial flying electrical testing device to adjust the working state of the electric field sensor therein with the corresponding electrical testing control parameter comprises:

[0020] Simulating and modeling the internal LC circuit of the inductive sensor to obtain a relationship table between different capacitance values ​​and circuit resonance effects;

[0021] Converting the electric test control parameter to obtain a target capacitance value;

[0022] The capacitance value of the LC circuit is determined according to the target capacitance value and the relationship table, so as to obtain the capacitance value to determine a second sensitivity level corresponding to the inductance sensor, and the working state of the inductance sensor is adjusted according to the second sensitivity level.

[0023] As one of the preferred solutions, the performing of a preset signal recognition process on the induced electric field signal includes:

[0024] The induced electric field signal is sequentially pre-amplified, filtered and post-amplified.

[0025] As one of the preferred solutions, generating a control alarm strategy matching the electrical level indication signal includes:

[0026] When it is detected that the electric test level indication signal meets the first preset range, a control strategy of the aerial flying electric test device is generated to move the aerial flying electric test device to the next line node;

[0027] When it is detected that the electrical test level indication signal meets the second preset range, an alarm strategy is generated to enable the aerial electrical test device to lock the current line node and generate a corresponding sound and light alarm signal and an alarm log.

[0028] Another embodiment of the present invention provides an ultra-high voltage transmission line power test control system, which is used to test a transmission line composed of a number of line nodes by using an aerial flying power test device. The system includes:

[0029] A parameter module, used to analyze the acquired power transmission data of each of the line nodes and generate power test control parameters matching the data;

[0030] A sending module, used for sending the corresponding power test control parameters to the aerial flying power test device before the aerial flying power test device arrives at each of the line nodes and starts to test the line nodes;

[0031] An adjustment module, used to control the aerial flight electrical testing device to adjust the working state of the electric field sensor inside it with the corresponding electrical testing control parameter;

[0032] A coupling module, configured to couple the measured spatial stray capacitance between the electric field sensor and the line node to obtain an induced electric field signal after detecting that the electric field sensor reaches a target working state;

[0033] An indication module, used for performing a preset signal recognition process on the induced electric field signal, and generating an indication signal reflecting the current electric test level of the line node according to the processing result;

[0034] The control alarm module is used to generate a control alarm strategy matching the electrical level indication signal according to the electrical level indication signal.

[0035] As one preferred solution, the electric field sensor is an optical electric field sensor;

[0036] The adjustment module comprises:

[0037] A model unit, used to construct an electro-optical crystal physical model corresponding to the optical electric field sensor based on a pre-selected sample set;

[0038] A curve unit, used to obtain a correlation curve between the relative dielectric constant and the measurement sensitivity of the electro-optical crystal by analyzing the electric field distribution data output by the electro-optical crystal physical model;

[0039] A conversion unit, used for converting the electrical test control parameter to obtain a target electro-optical crystal relative dielectric constant;

[0040] The first adjustment unit is used to determine a first sensitivity level corresponding to the optical electric field sensor according to the relative dielectric constant of the target electro-optical crystal and the correlation curve, and adjust the working state of the optical electric field sensor according to the first sensitivity level.

[0041] As one of the preferred schemes, the power transmission data acquired for each of the line nodes is analyzed to generate power test control parameters matching therewith, including: extracting node features of the power transmission data acquired for each of the line nodes using a node analysis algorithm to obtain the power transmission features of the line nodes; based on the power transmission features, using a matching algorithm to generate the power test control parameters matching the line node features; classifying the power test control parameters to determine different control parameter types; according to the control parameter type, matching parameters of each line node using a logic judgment algorithm to determine whether the adjustment parameters of the power test control parameters meet preset conditions; if the control parameters meet the preset conditions, sending the power test control parameters to the aerial power test device.

[0042] As one of the preferred schemes, before the aerial flying electrical test device arrives at each of the line nodes and starts to test them, the corresponding electrical test control parameters are sent to the aerial flying electrical test device, including: using a parameter transmission algorithm to send the electrical test control parameters to the aerial flying electrical test device; before the aerial flying electrical test device arrives at the target line node, writing the electrical test control parameters into the electrical test control module through a parameter loading algorithm; judging whether the electrical test operation meets the start-up conditions based on the parameter configuration in the electrical test control module and the device status monitoring data; if the electrical test operation meets the start-up conditions, using a task scheduling algorithm to determine the electrical test execution order of the device; when the device arrives at each line node, confirming the node location information through a node positioning algorithm, triggering the electrical test operation.

[0043] As one of the preferred schemes, after detecting that the electric field sensor reaches the target working state, the measured spatial stray capacitance between the electric field sensor and the line node is coupled to obtain an induced electric field signal, including: obtaining the spatial stray capacitance value between the electric field sensor and the line node according to the target working state of the electric field sensor; using a capacitive coupling algorithm to process the spatial stray capacitance value and the sensor signal value to obtain the induced electric field signal; judging whether its frequency band value matches a preset frequency band range according to the induced electric field signal; if the frequency band value matches, extracting a characteristic value in the induced electric field signal through a signal processing algorithm; generating a spatial electric field distribution map according to the characteristic value and the line node; using a data analysis algorithm to process the spatial electric field distribution map to obtain the electric field strength value of the line node; generating a final electric field detection result according to the electric field strength value and the preset target value.

[0044] Compared with the prior art, the embodiments of the present invention have the following advantages:

[0045] (1) Without the need for a handheld electrical tester, this solution uses an aerial electrical tester to test the power transmission line, which can not only greatly improve the efficiency of electrical testing, but also ensure the personal safety of power grid workers;

[0046] (2) Taking into full account the differences between different line nodes, specific control parameters are selected when testing different line nodes, which can greatly improve the accuracy of the sensor's power testing of the current line and provide accurate data support for subsequent power grid safety protection. On the one hand, it improves the accuracy of power testing, and on the other hand, it promotes the intelligent process of power grid power testing control;

[0047] (3) Adjust the sensitivity of the electric field sensor for different line nodes. The increased sensitivity of the electric field sensor means that it can detect weaker electric field signals. During the power test, this can ensure that the sensor can accurately capture the tiny voltage changes on the line, thereby more reliably determining whether it is energized. In addition, highly sensitive sensors can more accurately measure the electric field strength and reduce errors caused by noise or other interference factors, which helps to provide more accurate judgment basis during the power test. This is especially important for the power test of long-distance transmission lines at line nodes with inconsistent power information. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a flow chart of an ultra-high voltage transmission line power testing control method in one embodiment of the present invention;

[0049] Figure 2 It is a structural block diagram of an ultra-high voltage transmission line power test control system in one embodiment of the present invention;

[0050] Figure 3 is a first stereoscopic view of an aerial flying electrical testing device in one embodiment of the present invention;

[0051] Figure 4 It is a front view of an aerial flying electrical testing device in one embodiment of the present invention;

[0052] Figure 5 It is a left side view of an aerial flying electrical testing device in one embodiment of the present invention;

[0053] Figure 6 is a second stereoscopic view of an aerial flying electrical testing device in one embodiment of the present invention;

[0054] Reference numerals:

[0055] Among them, 11, parameter module; 12, sending module; 13, adjustment module; 14, coupling module; 15, indication module; 16, control alarm module; 200, aerial flight electrical testing device. DETAILED DESCRIPTION

[0056] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0057] In the description of this application, the terms "first", "second", "third", etc. are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", "third", etc. may explicitly or implicitly include one or more of the feature. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0058] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the two elements. The terms "vertical", "horizontal", "left", "right", "upper", "lower" and similar expressions used herein are only for illustrative purposes, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0059] In the description of this application, it should be noted that, unless otherwise defined, all technical and scientific terms used in the present invention have the same meaning as those commonly understood by those skilled in the art. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood by specific circumstances.

[0060] It should be noted that the ultra-high voltage transmission line power testing is a critical safety step to ensure that the line is energized, thereby avoiding electric shock accidents during maintenance or inspection. Existing power testing is very dependent on manual labor. The embodiment of the present invention uses an aerial flying power testing device 200 to test the power transmission line, thereby eliminating the need for manual intervention and improving the intelligent process of power grid power testing.

[0061] Preferably, the aerial flying electrical testing device 200 is a drone. The drone in this embodiment needs to carry the corresponding electrical testing equipment. The electrical testing equipment realizes the electrical testing function through the built-in electric field sensor. In addition, the electrical testing equipment and the drone body can be an integrated structure, and related control logic can also be set to enable the two to be separated, locked and moved. The corresponding specific structure, model and parameters are not specifically limited in the embodiments of the present invention.

[0062] With the continuous construction of power grid facilities, in order to reduce voltage drop and improve power supply quality in long-distance transmission lines, transformers may be installed at intermediate nodes, resulting in different line nodes in the transmission lines. These transformers are usually step-down transformers, which are used to reduce the voltage to a level suitable for local power grids or users. However, in some cases, such as when it is necessary to cross mountainous areas or water areas where it is difficult to lay cables directly, step-up transformers may also be installed to further increase the voltage and reduce power loss.

[0063] Considering that different transmission lines may have inconsistent power information due to the setting of transformers, an embodiment of the present invention provides an ultra-high voltage transmission line power test control method, which takes into account the node differences of the transmission line and adjusts the control parameters of the power test in real time during the power test process. For details, please refer to Figure 1 , Figure 1 The figure shows a flow chart of an ultra-high voltage transmission line power testing control method in one embodiment of the present invention, which specifically includes steps S1 to S6:

[0064] S1. Analyze the acquired power transmission data of each of the line nodes to generate power test control parameters matching the data;

[0065] S2, before the aerial flying electrical testing device 200 arrives at each of the line nodes and starts to test the electrical power thereof, the corresponding electrical testing control parameters are sent to the aerial flying electrical testing device 200;

[0066] S3, controlling the aerial flying electrical testing device 200 to adjust the working state of the electric field sensor inside it with the corresponding electrical testing control parameters;

[0067] S4, after detecting that the electric field sensor reaches the target working state, coupling the measured spatial stray capacitance between the electric field sensor and the line node to obtain an induced electric field signal;

[0068] S5, performing a preset signal recognition process on the induced electric field signal, and generating an electric test level indication signal reflecting the current line node according to the processing result;

[0069] S6. Generate a control alarm strategy matching the electrical test level indication signal.

[0070] Preferably, the power transmission data of each line node can be obtained by detecting the transformers on both sides of the node. In addition, in order to ensure the accuracy of the data, the power transmission data of each node can also be obtained from the power grid terminal, including but not limited to parameters such as voltage, current and power.

[0071] The purpose of the electric field control parameter is to subsequently adjust the sensitivity of the electric field sensor, and then switch to different working states. Specifically, the present invention provides two types of electric field sensors, optical electric field sensors and inductive sensors, which are described one by one below:

[0072] For the optical electric field sensor, firstly, based on the properties of the electro-optical crystal and the selected sample set, a physical model of the electro-optical crystal is constructed, and the corresponding model parameters are set. Then, the electric field distribution inside the electro-optical crystal is calculated by the model, and the sensitivity SE of the electro-optical crystal and the measurement sensitivity S of the optical electric field sensor are further calculated. Then, by changing the model parameters (such as the relative dielectric constant, geometric shape and three-dimensional size of the electro-optical crystal, etc.) and repeating the above steps, the sensitivity values ​​under different model parameters can be obtained, and then the correlation curve between the relative dielectric constant of the electro-optical crystal and the measurement sensitivity can be obtained. Finally, from the obtained correlation curve, the first sensitivity level corresponding to the optical electric field sensor is determined, and the working state of the optical electric field sensor is switched to the working state corresponding to the corresponding measurement sensitivity.

[0073] For inductive sensors, the sensitivity can be improved by improving their front-end signal processing circuits. First, use simulation software (such as Multisim) to simulate and model the internal LC circuit of the inductive sensor, and obtain a relationship table between different capacitance values ​​and circuit resonance effects (the resonance effect of the LC circuit improves the performance of the circuit, thereby increasing the sensitivity of the signal source). Then, convert the test control parameters to obtain the target capacitance value. Finally, determine the second sensitivity level corresponding to the inductive sensor, and switch the working state of the inductive sensor to the working state corresponding to the corresponding measurement sensitivity.

[0074] In the process of electrical inspection, in order to improve the accuracy of signal recognition, the induced electric field signal also needs to undergo a series of signal recognition processing. Preferably, the induced electric field signal is sequentially pre-amplified, filtered and post-amplified. Of course, the above processing flow can be implemented through relevant circuits or modules. In addition, more complex signal processing circuits, such as rectifier circuits, Schmidt trigger devices, etc., can be used to improve the accuracy and reliability of electrical inspection, which will not be described in detail in the embodiments of the present invention.

[0075] Further, in the above embodiment, according to the test level indication signal, a control alarm strategy matching it is generated to realize the acceptance and monitoring of the test results. The control alarm strategy includes two types. One is that the test result of the current line node meets the normal range standard. Specifically, when it is detected that the test level indication signal meets the first preset range interval, the control strategy of the aerial test device 200 is generated to move the aerial test device 200 to the next line node; the second is that the test result of the current line node does not meet the normal range standard. At this time, the aerial test device 200 no longer moves and it is necessary to alarm the relevant personnel. Specifically, when it is detected that the test level indication signal meets the second preset range interval, an alarm strategy is generated to lock the aerial test device 200 to the current line node and generate a corresponding sound and light alarm signal and an alarm log. Of course, the aerial test device 200 body can be provided with a relevant LED light group and a speaker to realize the alarm, and the alarm log can also be sent to the power grid terminal for recording and cloud storage.

[0076] Another embodiment of the present invention provides an ultra-high voltage transmission line power test control system, which is used to test a transmission line composed of a number of line nodes by using an aerial flying power test device 200. For details, please refer to Figure 2 , Figure 2 The structure block diagram of an ultra-high voltage transmission line power test control system in one embodiment of the present invention is shown, which includes:

[0077] The parameter module 11 is used to analyze the acquired power transmission data of each of the line nodes and generate power test control parameters matching the data;

[0078] The sending module 12 is used for Figure 3 , Figure 4 , Figure 5 and Figure 6 Before the aerial flying electrical testing device 200 arrives at each of the line nodes and starts to test the line nodes, the corresponding electrical testing control parameters are sent to the aerial flying electrical testing device 200;

[0079] The adjustment module 13 is used to control the aerial flight electrical testing device 200 to adjust the working state of the electric field sensor inside the device with the corresponding electrical testing control parameters;

[0080] A coupling module 14 is used to couple the measured spatial stray capacitance between the electric field sensor and the line node to obtain an induced electric field signal after detecting that the electric field sensor reaches a target working state;

[0081] The indication module 15 is used to perform a preset signal recognition process on the induced electric field signal, and generate an indication signal reflecting the current electric test level of the line node according to the processing result;

[0082] The control alarm module 16 is used to generate a control alarm strategy matching the electrical level indication signal according to the electrical level indication signal.

[0083] Further, in the above embodiment, the electric field sensor is an optical electric field sensor;

[0084] The adjustment module 13 includes:

[0085] A model unit, used to construct an electro-optical crystal physical model corresponding to the optical electric field sensor based on a pre-selected sample set;

[0086] A curve unit, used to obtain a correlation curve between the relative dielectric constant and the measurement sensitivity of the electro-optical crystal by analyzing the electric field distribution data output by the electro-optical crystal physical model;

[0087] A conversion unit, used for converting the electrical test control parameter to obtain a target electro-optical crystal relative dielectric constant;

[0088] The first adjustment unit is used to determine a first sensitivity level corresponding to the optical electric field sensor according to the relative dielectric constant of the target electro-optical crystal and the correlation curve, and adjust the working state of the optical electric field sensor according to the first sensitivity level.

[0089] Further, in the above embodiment, the electric field sensor is an inductive sensor;

[0090] The adjustment module 13 includes:

[0091] A simulation unit, used to simulate and model the internal LC circuit of the inductive sensor to obtain a relationship table between different capacitance values ​​and circuit resonance effects;

[0092] A capacitance unit, used to convert the electrical test control parameter to obtain a target capacitance value;

[0093] The second adjustment unit is used to determine the capacitance value of the LC circuit according to the target capacitance value and the relationship table, so as to obtain the capacitance value to determine the second sensitivity level corresponding to the inductance sensor, and adjust the working state of the inductance sensor according to the second sensitivity level.

[0094] Furthermore, in the above embodiment, the indication module 15 includes:

[0095] The processing unit is used to perform pre-amplification, filtering and post-amplification processing on the induced electric field signal in sequence.

[0096] Furthermore, in the above embodiment, the control alarm module 16 includes:

[0097] The control unit is used to generate a control strategy for the aerial flight electrical test device 200 when it is detected that the electrical test level indication signal meets the first preset range interval, so as to Figure 3 , Figure 4 , Figure 5 and Figure 6 The aerial flying electrical testing device 200 shown moves to the next line node;

[0098] The alarm unit is used to generate an alarm strategy when it detects that the electrical test level indication signal meets the second preset range interval, so that the aerial flight electrical test device 200 locks the current line node and generates a corresponding sound and light alarm signal and an alarm log.

[0099] Further, in one of the embodiments, step S1 includes: extracting node features of the acquired power transmission data of each line node using a node analysis algorithm to obtain the power transmission characteristics of the line node; based on the power transmission characteristics, using a matching algorithm to generate power test control parameters that match the line node characteristics; classifying the power test control parameters to determine different control parameter types; according to the control parameter type, matching parameters of each line node using a logic judgment algorithm to determine whether the adjustment parameters of the power test control parameters meet the preset conditions; if the control parameters meet the preset conditions, sending the power test control parameters to the aerial flying power test device 200.

[0100] Specifically, the data parsing algorithm can be used to convert the original data into a standard format for subsequent analysis. For example, for a substation node, the original data contains information such as voltage, current, and power factor. The parsing algorithm extracts these data and unifies them into standard units and formats. The node analysis algorithm reveals the operating status of the node by extracting the characteristics of power transmission. Taking the transformer as an example, its load rate, temperature change, harmonic content and other characteristics can be analyzed. These characteristics reflect the health status and operating efficiency of the transformer and provide a basis for subsequent control. The matching algorithm generates power inspection control parameters based on the node characteristics, and generates control parameters such as voltage regulation and reactive power compensation for the distribution line. These parameters need to match the actual situation of the node to ensure the control effect. For example, for a line section with low voltage, a boost control parameter is generated. The classification of control parameters helps to achieve refined management. Common classifications include protection, regulation, optimization, etc. Protection parameters include overcurrent protection set values, regulation parameters include voltage regulation coefficients, and optimization parameters include economic operation plans. This classification enables the system to adopt corresponding control strategies for different situations.

[0101] The control parameters are matched and verified through the logic judgment algorithm. When adjusting the voltage, the system will determine whether the generated adjustment parameters are within the allowable range of the equipment and whether they comply with the grid operation regulations. If the parameters meet the conditions, they are applied to the actual control; otherwise, the matching algorithm needs to be readjusted. This closed-loop power inspection control method can improve the safety and efficiency of grid operation. By analyzing node data in real time, the system can promptly detect potential problems and take preventive measures. When it is detected that the line load continues to increase, the operation mode of the relevant equipment can be adjusted in advance to avoid overload. The application of power inspection control parameters is a key link in the whole process. During the reactive power compensation process, the system controls the input or removal operation of the compensation equipment according to the generated parameters to achieve smooth voltage regulation. This can not only improve the power supply quality, but also reduce line losses, and achieve a dual improvement in economic and technical benefits. Through this series of steps, grid operators can more accurately grasp the operating status of line nodes and realize intelligent management of power transmission. The advantage of this method is that it can adapt to the dynamic changes of the power grid and continuously optimize the control strategy according to real-time data, thereby improving the reliability and efficiency of the entire power system.

[0102] Further, in one of the embodiments, step S2 includes: using a parameter transmission algorithm to send the electrical test control parameters to the aerial flying electrical test device 200; before the aerial flying electrical test device 200 arrives at the target line node, writing the electrical test control parameters into the electrical test control module through a parameter loading algorithm; judging whether the electrical test operation meets the start-up conditions based on the parameter configuration in the electrical test control module and in combination with the device status monitoring data; if the electrical test operation meets the start-up conditions, determining the electrical test execution order of the device through a task scheduling algorithm; when the device arrives at each line node, confirming the node location information through a node positioning algorithm, and triggering the electrical test operation.

[0103] Specifically, the control center sends the pre-generated power test control parameters to the flight device through the parameter transmission algorithm. This process usually adopts an encrypted communication protocol to ensure the security of data transmission. The parameters are encrypted using the AES encryption algorithm and then transmitted through the 4G or 5G network to effectively prevent the parameters from being tampered with or stolen. The parameter loading algorithm completes the parameter writing before the flight device arrives at the target line node. This process involves parameter format conversion and verification to adapt to the hardware characteristics of different types of power test devices. For a certain type of power test device, the voltage threshold needs to be converted from a floating point number to a fixed point format, and a range check is performed to ensure that the parameter is within the valid range. The judgment of the start condition of the power test operation involves many factors. The device status monitoring data includes battery power, GPS signal strength, attitude stability, etc. When the battery power is less than 20%, the GPS positioning accuracy is worse than 5 meters, or the attitude deviation exceeds 5 degrees, the system will suspend the power test operation to ensure flight safety and power test accuracy. When determining the execution order of power test, the task scheduling algorithm needs to consider factors such as line topology, energy consumption optimization, and time efficiency. The improved traveling salesman problem algorithm is used to generate the optimal power inspection path in combination with the importance weights of the line nodes. This can not only reduce the flight distance, but also give priority to the key nodes for power inspection, thus improving the overall efficiency.

[0104] The power test operation is triggered by the node positioning algorithm. In addition to GPS positioning, visual recognition technology can also be used to improve accuracy. Using deep learning models to identify transmission tower features and combining them with inertial navigation systems can improve positioning accuracy to centimeter levels, ensuring that the power test probe accurately contacts the target part. The dynamic adjustment of the power test results involves data processing algorithms. Assume that the voltage value measured at a line node is 380kV, which is significantly different from the expected value of 350kV. The system will automatically adjust the voltage threshold of subsequent nodes or increase the sampling frequency of the area to monitor the voltage distribution more carefully. The data storage algorithm comes into play after the power test task is completed. To improve data reliability and traceability, distributed storage technology can be used. For example, the power test results are stored locally in the flight device, in the mobile edge computing node, and in the cloud data center, and blockchain technology is used to ensure data consistency and immutability. This system realizes full-process management from the control center to the flight device and then to the control center through a closed loop of parameter transmission. It not only improves the efficiency and accuracy of power test, but also provides strong technical support for intelligent operation and maintenance of power grids. By adjusting the power testing strategy in real time, the system can quickly respond to changes in the power grid status, providing strong guarantees for the safe and stable operation of the power system.

[0105] Further, in one of the embodiments, step S4 includes: obtaining a spatial stray capacitance value between the electric field sensor and the line node according to a target working state of the electric field sensor; using a capacitive coupling algorithm to process the spatial stray capacitance value and the sensor signal value to obtain an induced electric field signal; judging whether its frequency band value matches a preset frequency band range according to the induced electric field signal; if the frequency band value matches, extracting a characteristic value in the induced electric field signal through a signal processing algorithm; generating a spatial electric field distribution map according to the characteristic value and the line node; using a data analysis algorithm to process the spatial electric field distribution map to obtain an electric field strength value of the line node; and generating a final electric field detection result according to the electric field strength value and a preset target value.

[0106] Specifically, the electric field coupling strength between the sensor and the line node is obtained by obtaining the spatial stray capacitance. The spatial stray capacitance is obtained by using a capacitance bridge method or a resonance method. A precision LCR tester is used to measure the capacitance between the sensor and the simulated line node at a frequency of 1kHz to obtain a value of 10pF. This value changes with the position of the sensor, so it is necessary to repeat the measurement at multiple locations and take the average value. The capacitive coupling algorithm uses the above capacitance value to convert the sensor signal into an induced electric field signal. By constructing an equivalent circuit model, the spatial stray capacitance is regarded as a coupling capacitor and the sensor output is regarded as a voltage source. By analyzing the equivalent circuit, the relationship function between the induced electric field and the sensor output can be obtained. Assuming that the sensor output is 2V and the spatial rod stray capacitance is 10pF, the induced electric field strength of 100kV / m is obtained by calculation. Frequency band matching is an important step to ensure measurement accuracy. The power frequency electric field is mainly concentrated around 50Hz or 60Hz, so the preset frequency band range is 45-65Hz. Use fast Fourier transform (FFT) to analyze the induced electric field signal. If it is found that the main energy is concentrated at 52Hz, the frequency band is determined to be matched. This step helps to filter out non-power frequency interference and improve measurement accuracy.

[0107] Signal processing is performed through eigenvalue extraction. For the power frequency electric field, the main focus is on features such as peak value, effective value and phase. The peak value is obtained by peak detection algorithm, the effective value is obtained by RMS calculation, and the phase is determined by zero crossing method. For example, for a certain measurement, the peak value is 141.4kV / m, the effective value is 100kV / m, and the phase leads the reference phase by 30 degrees. These eigenvalues ​​fully describe the characteristics of the induced electric field. The generation of the spatial electric field distribution map requires the combination of data from multiple measurement points. Multiple groups of electric field strength values ​​are measured at different heights and distances, and interpolation algorithms such as Kriging can be used to generate continuous electric field distribution maps. This graphical representation intuitively shows the spatial variation of electric field strength and helps to identify potential overvoltage areas. The data analysis algorithm further processes the distribution map to extract key information. Use image processing technology to identify the maximum point of electric field strength or calculate the average electric field strength in a specific area. Assume that within 10 meters of a certain line node, the analysis shows that the maximum electric field strength is 120kV / m and the average is 80kV / m. These values ​​provide a basis for subsequent judgment. The final electric field detection result is the process of comparing the analyzed electric field strength value with the preset target value. If the preset safety threshold is 100kV / m, and the measured maximum value of 120kV / m exceeds this threshold, a "warning" level detection result is generated, indicating that further inspection or measures are needed. This result is directly related to the safe operation of the power system and is of great significance for preventing insulation breakdown and protecting equipment safety. The whole process embodies a complete chain from raw signal acquisition to final decision-making. Each step is based on the previous step, forming a rigorous logical system. This method not only improves the accuracy of electric field measurement, but also provides reliable technical support for the safe operation of the power system.

[0108] An ultra-high voltage transmission line power test control method and system provided by an embodiment of the present invention has the beneficial effects of at least one of the following:

[0109] (1) Without the need for a manual handheld electrical tester, the present solution uses an aerial flying electrical test device 200 to test the power transmission line, which can not only greatly improve the efficiency of electrical testing, but also ensure the personal safety of power grid workers;

[0110] (2) Taking into full account the differences between different line nodes, specific control parameters are selected when testing different line nodes, which can greatly improve the accuracy of the sensor's power testing of the current line and provide accurate data support for subsequent power grid safety protection. On the one hand, it improves the accuracy of power testing, and on the other hand, it promotes the intelligent process of power grid power testing control;

[0111] (3) Adjust the sensitivity of the electric field sensor for different line nodes. The increased sensitivity of the electric field sensor means that it can detect weaker electric field signals. During the power test, this can ensure that the sensor can accurately capture the tiny voltage changes on the line, thereby more reliably determining whether it is energized. In addition, highly sensitive sensors can more accurately measure the electric field strength and reduce errors caused by noise or other interference factors, which helps to provide more accurate judgment basis during the power test. This is especially important for the power test of long-distance transmission lines at line nodes with inconsistent power information.

[0112] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A method for controlling power testing of an ultra-high voltage transmission line, characterized in that: The method is applied to testing the power transmission line composed of a number of line nodes by using an aerial flying power testing device, and the method comprises: Analyze the acquired power transmission data of each of the line nodes to generate power test control parameters matching the data; Before the aerial flying electrical testing device arrives at each of the line nodes and starts to test the line nodes, the corresponding electrical testing control parameters are sent to the aerial flying electrical testing device; Controlling the aerial flying electrical testing device to adjust the working state of the electric field sensor inside it with the corresponding electrical testing control parameters; After detecting that the electric field sensor reaches a target working state, coupling the measured spatial stray capacitance between the electric field sensor and the line node to obtain an induced electric field signal; Performing a preset signal recognition process on the induced electric field signal, and generating an electric test level indication signal reflecting the current line node according to the processing result; According to the electrical inspection level indication signal, a control alarm strategy matching the electrical inspection level indication signal is generated.

2. The ultra-high voltage transmission line power testing control method according to claim 1, characterized in that: The electric field sensor is an optical electric field sensor; The controlling the aerial flying electrical testing device to adjust the working state of the electric field sensor therein with the corresponding electrical testing control parameter comprises: Based on the pre-selected sample set, constructing an electro-optical crystal physical model corresponding to the optical electric field sensor; By analyzing the electric field distribution data output by the electro-optical crystal physical model, a correlation curve between the relative dielectric constant of the electro-optical crystal and the measurement sensitivity is obtained; Converting the electrical test control parameter to obtain the relative dielectric constant of the target electro-optical crystal; According to the relative dielectric constant of the target electro-optical crystal and the correlation curve, a first sensitivity level corresponding to the optical electric field sensor is determined, and the working state of the optical electric field sensor is adjusted according to the first sensitivity level.

3. The ultra-high voltage transmission line power testing control method according to claim 1, characterized in that: The electric field sensor is an inductive sensor; The controlling the aerial flying electrical testing device to adjust the working state of the electric field sensor therein with the corresponding electrical testing control parameter comprises: Simulating and modeling the internal LC circuit of the inductive sensor to obtain a relationship table between different capacitance values ​​and circuit resonance effects; Converting the electric test control parameter to obtain a target capacitance value; The capacitance value of the LC circuit is determined according to the target capacitance value and the relationship table, the second sensitivity level corresponding to the inductance sensor is determined by the obtained capacitance value, and the working state of the inductance sensor is adjusted according to the second sensitivity level.

4. The ultra-high voltage transmission line power testing control method according to claim 1, characterized in that: The performing a preset signal recognition process on the induced electric field signal includes: The induced electric field signal is sequentially pre-amplified, filtered and post-amplified.

5. The ultra-high voltage transmission line power testing control method according to claim 1, characterized in that: The step of generating a control alarm strategy matching the power test level indication signal comprises: When it is detected that the electric test level indication signal meets the first preset range, a control strategy of the aerial flying electric test device is generated to move the aerial flying electric test device to the next line node; When it is detected that the electrical test level indication signal meets the second preset range interval, an alarm strategy is generated to enable the aerial electrical test device to lock the current line node and generate a corresponding sound and light alarm signal and an alarm log.

6. An ultra-high voltage transmission line power test control system, characterized in that: The system is applied to testing the power transmission line composed of a number of line nodes by using an aerial flying power testing device, and the system includes: A parameter module, used to analyze the acquired power transmission data of each of the line nodes and generate power test control parameters matching the data; A sending module, used for sending the corresponding power test control parameters to the aerial flying power test device before the aerial flying power test device arrives at each of the line nodes and starts to test the line nodes; An adjustment module, used for controlling the aerial flight electrical testing device to adjust the working state of the electric field sensor inside the device with the corresponding electrical testing control parameters; A coupling module, configured to couple the measured spatial stray capacitance between the electric field sensor and the line node to obtain an induced electric field signal after detecting that the electric field sensor reaches a target working state; An indication module, used for performing a preset signal recognition process on the induced electric field signal, and generating an indication signal reflecting the current electric test level of the line node according to the processing result; The control alarm module is used to generate a control alarm strategy matching the electrical level indication signal according to the electrical level indication signal.

7. The ultra-high voltage transmission line power testing control system according to claim 6, characterized in that: The electric field sensor is an optical electric field sensor; The adjustment module comprises: A model unit, used to construct an electro-optical crystal physical model corresponding to the optical electric field sensor based on a pre-selected sample set; A curve unit, used to obtain a correlation curve between the relative dielectric constant and the measurement sensitivity of the electro-optical crystal by analyzing the electric field distribution data output by the electro-optical crystal physical model; A conversion unit, used for converting the electrical test control parameter to obtain a relative dielectric constant of a target electro-optical crystal; The first adjustment unit is used to determine a first sensitivity level corresponding to the optical electric field sensor according to the relative dielectric constant of the target electro-optical crystal and the correlation curve, and adjust the working state of the optical electric field sensor according to the first sensitivity level.

8. The ultra-high voltage transmission line power testing control system according to claim 6, characterized in that: The step of analyzing the acquired power transmission data of each of the line nodes to generate power test control parameters matching the acquired power transmission data includes: For the acquired power transmission data of each of the line nodes, node feature extraction is performed using a node analysis algorithm to obtain power transmission features of the line nodes; Based on the electric energy transmission characteristics, a matching algorithm is used to generate the electric power test control parameters that match the line node characteristics; Classifying the electrical inspection control parameters to determine different control parameter types; According to the control parameter type, each line node is matched with parameters through a logic judgment algorithm to determine whether the adjustment parameters of the power detection control parameters meet the preset conditions; If the adjustment parameters meet the preset conditions, the electrical test control parameters are sent to the aerial electrical test device.

9. The ultra-high voltage transmission line power test control system according to claim 6, characterized in that: Before the aerial flying electrical testing device arrives at each of the line nodes and starts to test the line nodes, the corresponding electrical testing control parameters are sent to the aerial flying electrical testing device, including: Using a parameter transmission algorithm to send the electrical test control parameter to the aerial flight electrical test device; Before the aerial flying electrical testing device arrives at the target line node, the electrical testing control parameters are written into the electrical testing control module through a parameter loading algorithm; According to the parameter configuration in the power test control module and in combination with the device status monitoring data, it is determined whether the power test operation meets the start-up conditions; If the power-test operation meets the start-up conditions, the task scheduling algorithm is used to determine the power-test execution order of the device; When the device arrives at each line node, the node location information is confirmed through the node positioning algorithm, triggering the power test operation.

10. The ultra-high voltage transmission line power test control system according to claim 6, characterized in that: After detecting that the electric field sensor reaches the target working state, coupling the measured spatial stray capacitance between the electric field sensor and the line node to obtain an induced electric field signal includes: According to the target working state of the electric field sensor, obtaining a spatial stray capacitance value between the electric field sensor and a line node; Using a capacitive coupling algorithm, the spatial stray capacitance value and the sensor signal value are processed to obtain the induced electric field signal; According to the induced electric field signal, determining whether its frequency band value matches a preset frequency band range; If the frequency band values ​​match, extracting characteristic values ​​from the induced electric field signal through a signal processing algorithm; Generate a spatial electric field distribution diagram according to the characteristic values ​​and line nodes; Using a data analysis algorithm to process the spatial electric field distribution diagram, and obtain the electric field strength value of the line node; The final electric field detection result is generated based on the electric field strength value and the preset target value.

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