A non-contact measurement system for multi-dimensional parameters of substations

Abstract

The present invention relates to the technical field of parameter measurement, and discloses a non-contact measurement system for multi-dimensional parameters of a substation; the system comprises the following steps: selecting a device to be tested from power equipment, planning a measurement path on an electronic map, marking a target measurement point on the measurement path, controlling the measurement device to move to the target measurement point, measuring the multi-dimensional parameters of the device to be tested in a measurement mode, identifying the parameter attributes of the multi-dimensional parameters, and generating a parameter report sheet; compared with the prior art, the present invention can construct a measurement path for orderly and rapid measurement of the device to be tested, shorten the distance traveled by the measurement device during mobile measurement in the substation, avoid the phenomenon of chaotic and disordered parameter measurement, and perform comprehensive and accurate measurement operations on the multi-dimensional parameters of the device to be tested, avoiding the inconvenience caused by the traditional contact parameter measurement method, and providing a comprehensive basis for judging the actual operating status of the substation.

Description

Technical Field

[0001] The present invention relates to the technical field of parameter measurement, and more specifically, to a non-contact measurement system for multi-dimensional parameters of a substation. Background Art

[0002] A substation is a place in the power system where voltage and current are transformed, electric energy is received and distributed. In the daily operation of the substation, it is necessary to timely and accurately understand the operating status of the power equipment in the substation and provide a basis for subsequent inspection and maintenance. Therefore, it is necessary to measure the multi-dimensional parameters of the power equipment. In order to avoid the inconvenience and danger brought by direct contact measurement, it is necessary to use non-contact measurement methods to measure the multi-dimensional parameters of the power equipment.

[0003] The patent application with reference publication number CN118603188A discloses a non-contact measurement system for multi-dimensional parameters of a substation, which uses image recognition technology to monitor the status of equipment, and obtains the operating status of the equipment through analysis and calculation. When the data obtained from the analysis shows that there is a problem with the equipment, the operation and maintenance personnel can repair the equipment in time. When there is a problem with the equipment, the image recognition technology can be used to quickly analyze the problem of the equipment, and the information can be transmitted to the operation and maintenance personnel, so that the operation and maintenance personnel can maintain the equipment in time, thereby improving the use effect of the substation. When the temperature inside the substation exceeds the temperature set by the infrared temperature sensor, the infrared temperature sensor will sound an alarm. After hearing the alarm, the operation and maintenance personnel can immediately go to realize cooling and heat dissipation inside the substation, so that the equipment inside the substation can work smoothly and improve the use efficiency of the substation.

[0004] The existing non-contact measurement system controls the measuring equipment to randomly move to the measuring position of the power equipment, and measures the multi-dimensional parameters of the power equipment with the help of non-contact measurement components, thereby providing multi-dimensional measurement parameters for the substation. Since the types of power equipment in the substation are relatively complex and the location of each power equipment is also different, the method of randomly moving the measuring equipment to the corresponding position of the power equipment will cause the measurement moving distance of the measuring equipment to be longer. At the same time, the method of randomly selecting power equipment as the parameter measurement object is also prone to the phenomenon of disordered parameter measurement objects, resulting in parameter omission and loss during multi-dimensional parameter non-contact measurement, which reduces the effect of multi-dimensional parameter non-contact measurement.

[0005] In view of this, the present invention proposes a non-contact measurement system for multi-dimensional parameters of a substation to solve the above problems. Summary of the invention

[0006] In order to overcome the above-mentioned defects of the prior art and to achieve the above-mentioned purpose, the present invention provides the following technical solution: a non-contact measurement system for multi-dimensional parameters of a substation, applied to a measurement server, comprising:

[0007] The equipment screening module is used to mark all the power equipment in the substation, query the status attributes of the power equipment, and screen the equipment to be tested from the power equipment;

[0008] A path planning module is used to mark the device points corresponding to the device to be tested on the electronic map, and plan a measurement path on the electronic map based on the path planning criteria;

[0009] A measuring point marking module is used to mark the target measuring point on the measuring path, formulate the target priority, and control the measuring device to move to the target measuring point according to the target priority;

[0010] The parameter measurement module is used to calculate the measurement coefficient of the target measurement point, select the corresponding measurement mode, and measure the multi-dimensional parameters of the device under test in the measurement mode. The multi-dimensional parameters include excess temperature value, maximum noise value and vibration time difference value;

[0011] The parameter reporting module is used to identify the parameter attributes of the multi-dimensional parameters, the parameter attributes including reliable parameters and unreliable parameters, divide the multi-dimensional parameters, and generate a parameter report sheet based on the divided multi-dimensional parameters.

[0012] Furthermore, the state attributes include static attributes and dynamic attributes, and the identification methods of the static attributes and the dynamic attributes include:

[0013] The substation work area in the substation is queried through the drawing management system, and the equipment located in the substation work area is recorded as power equipment;

[0014] Query the operation log of the power equipment at the current moment through the operation management system, and query the potential value in the operation log;

[0015] Record the operation log with a potential value of 1 as a dynamic log, and record the state attribute of the power equipment corresponding to the dynamic log as a dynamic attribute;

[0016] Record the operation log with a potential value of 0 as a static log, and record the state attribute of the power equipment corresponding to the dynamic log as a static attribute;

[0017] The screening methods for the devices under test include:

[0018] When the state attribute of the power equipment is a static attribute, the power equipment is recorded as a device to be tested;

[0019] When the state attribute of the electric power equipment is a dynamic attribute, the electric power equipment is recorded as a device to be tested, and A devices to be tested are obtained.

[0020] Furthermore, the marking method of the equipment point includes:

[0021] The electronic map of the substation is queried through the map management system, the substation work area is identified on the electronic map, and the locations of the power equipment in the substation work area are marked one by one to obtain the original locations;

[0022] The position numbers of the original points and the position numbers of the devices to be tested are queried one by one through the drawing management system, and the original points with the same position numbers as the devices to be tested are recorded as device points to obtain A device points.

[0023] Furthermore, the path planning criteria are: there are no repeated target roads or auxiliary roads in the measurement path;

[0024] The planning methods of the measurement path include:

[0025] Mark all inspection roads on the electronic map, and measure the distances from A equipment points to all inspection roads one by one to obtain the point-to-road distance values;

[0026] The inspection road corresponding to the minimum point-to-road distance value in the four directions of east, south, west and north of the equipment point is recorded as the target road, and the inspection road connecting two adjacent target roads is recorded as the auxiliary road;

[0027] Mark the equipment point closest to the substation inlet and the equipment point closest to the substation outlet on the electronic map, and record them as the inlet point and outlet point respectively;

[0028] Take the import point as the starting point of the path, the export point as the end point of the path, and the remaining A-2 equipment points as the waypoints, and draw C non-repetitive paths to be verified between the target road and the auxiliary road;

[0029] The path lengths of the C paths to be verified are measured one by one, and the path to be verified corresponding to the minimum value of the path length is recorded as the measured path.

[0030] Furthermore, the marking method of the target measurement point includes:

[0031] Using the preset length as the interval standard, mark D points to be measured on the measurement path one by one;

[0032] Measure the straight-line distances between A equipment points and D points to be measured one by one, and obtain E point-to-point distance values;

[0033] The point to be measured corresponding to the minimum point-to-point distance value of A equipment points is recorded as the target measurement point, and A target measurement points are obtained;

[0034] The target priority is: on the measurement path, the target measurement point with a smaller path length from the path starting point has a higher priority.

[0035] Furthermore, the calculation method of the measurement coefficient includes:

[0036] Query the heights of A devices to be tested one by one through the technical parameter table to obtain A height values;

[0037] Mark the minimum value of the point-to-point distances from A equipment points to A target measurement points one by one to obtain A minimum distance values;

[0038] Based on the A height values ​​and the A minimum distance values, A measurement coefficients are obtained;

[0039] The expression of the measurement coefficient is:

[0040] ;

[0041] In the formula, For the The measurement coefficients, For the Height values, For the The minimum distance value, =1,2...A;

[0042] The measurement mode includes a synchronous measurement mode and an asynchronous measurement mode. The selection method of the synchronous measurement mode and the asynchronous measurement mode includes:

[0043] Compare the measurement coefficients of A target measurement points with the preset measurement thresholds one by one;

[0044] When the measurement coefficient of the target measurement point is less than the preset measurement threshold, the synchronous measurement mode is selected;

[0045] When the measurement coefficient of the target measurement point is greater than or equal to a preset measurement threshold, the asynchronous measurement mode is selected.

[0046] Furthermore, the method for measuring the excess temperature value includes:

[0047] Use an infrared thermal imager to take infrared images of A devices under test, and mark the temperature value of each pixel point in the infrared image one by one, which is recorded as a single point temperature value;

[0048] The single point temperature value greater than the standard temperature value is recorded as the abnormal temperature value, and the abnormal temperature value, After subtracting the abnormal temperature values ​​from the standard temperature values, The differences are accumulated and averaged to obtain A excess temperature values;

[0049] The expression for the excess temperature value is:

[0050] ;

[0051] In the formula, For the The excess temperature value of the device under test, For the The device under test Abnormal temperature values, For the The standard temperature value of the device under test.

[0052] Furthermore, the vibration time difference measurement method includes:

[0053] A1: Use the ultrasonic sensor to transmit ultrasonic waves to the device under test, and record the emission time of the ultrasonic waves to obtain the emission time;

[0054] A2: The ultrasonic sensor records the moment when the reflected ultrasonic wave is received to obtain the receiving moment;

[0055] A3: The duration between the transmitting time and the receiving time is recorded as the vibration duration to obtain the vibration duration;

[0056] A4: Repeat steps A1-A3 k times to obtain k vibration durations, and then add up the k vibration durations and calculate the average to obtain A sub-durations;

[0057] A5: Subtract the A sub-durations from the preset standard duration one by one to obtain A vibration time difference values;

[0058] The expression of the vibration time difference is:

[0059] ;

[0060] In the formula, For the The vibration time difference value of the device under test, For the The duration of each device under test, For the The preset standard duration of each device under test.

[0061] Furthermore, the method for identifying reliable parameters and unreliable parameters includes:

[0062] Compare the excess temperature value with the safe temperature value;

[0063] When the excess temperature value is greater than or equal to the safe temperature value, the excess temperature value is identified as an unreliable parameter, and when the excess temperature value is less than the safe temperature value, the excess temperature value is identified as a reliable parameter;

[0064] Compare the maximum noise value with the safe noise value;

[0065] When the maximum noise value is greater than or equal to the safety noise value, the maximum noise value is identified as an unreliable parameter, and when the maximum noise value is less than the safety noise value, the maximum noise value is identified as a reliable parameter;

[0066] Compare the vibration time difference value with the safety time difference value;

[0067] When the vibration time difference value is greater than or equal to the safety time difference value, the vibration time difference value is identified as an unreliable parameter, and when the vibration time difference value is less than the safety time difference value, the vibration time difference value is identified as a reliable parameter.

[0068] Furthermore, the method for generating the parameter report includes:

[0069] Sequentially divide the reliable parameters and unreliable parameters in A devices under test into two sets to obtain A first sets and A second sets;

[0070] Screen out blank report sheets through the report management system, create A report lines in parallel in the blank report sheets, and number the A report lines in ascending order from top to bottom;

[0071] Construct two parameter positions in each of the A report lines, which are recorded as the first parameter position and the second parameter position;

[0072] The report lines and devices under test with the same number are bound one by one, and the first set and the second set of A devices under test after binding are sequentially imported into the first parameter position and the second parameter position of the A report lines to generate a parameter report sheet.

[0073] Technical effects and advantages of a non-contact measurement system for multi-dimensional parameters of a substation according to the present invention:

[0074] The present invention marks all the power equipment in the substation, queries the state attributes of the power equipment, and selects the equipment to be tested from the power equipment, marks the equipment point corresponding to the equipment to be tested on the electronic map, and plans a measurement path on the electronic map based on the path planning criterion, marks the target measurement point on the measurement path, formulates the target priority, and controls the measurement equipment to move to the target measurement point according to the target priority, calculates the measurement coefficient of the target measurement point, selects the corresponding measurement mode, measures the multi-dimensional parameters of the equipment to be tested in the measurement mode, identifies the parameter attributes of the multi-dimensional parameters, divides the multi-dimensional parameters, and generates a parameter report according to the divided multi-dimensional parameters; compared with the prior art, the present invention can effectively identify the equipment to be tested that meets the non-contact parameter measurement, and generate a parameter report in the electrical The location of the device to be tested is marked on the sub-map, and a measurement path is constructed for orderly and fast measurement of the device to be tested. This can not only shorten the distance traveled by the measuring equipment in the substation for mobile measurement, but also ensure that all the devices to be tested can be measured in an orderly manner, avoiding the phenomenon of chaotic and disordered parameter measurement. After marking the target measurement point on the measurement path, according to the different measurement modes of each target measurement point, the measuring equipment is controlled to perform comprehensive and accurate measurement operations on the multi-dimensional parameters of the device to be tested at the target measurement point, and the multi-dimensional parameters are distinguished and displayed in combination with the parameter report sheet, avoiding the inconvenience brought by the traditional contact parameter measurement method, and providing a comprehensive judgment basis for the actual operation status of the substation, realizing the non-contact measurement effect of the multi-dimensional parameters of the substation. BRIEF DESCRIPTION OF THE DRAWINGS

[0075] Figure 1 A schematic diagram of the architecture of a non-contact measurement system for multi-dimensional parameters of a substation provided in the first embodiment of the present invention;

[0076] Figure 2 A schematic diagram of a module of a non-contact measurement system for multi-dimensional parameters of a substation provided in the first embodiment of the present invention;

[0077] Figure 3 A schematic flow chart of a non-contact measurement method for multi-dimensional parameters of a substation provided in Embodiment 2 of the present invention;

[0078] Figure 4 A schematic diagram of a structural diagram of an electronic device provided in Embodiment 3 of the present invention. DETAILED DESCRIPTION

[0079] 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. 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.

[0080] Example 1: Please refer to Figure 1 and Figure 2 As shown, the non-contact measurement system for multi-dimensional parameters of a substation described in this embodiment is applied to a measurement server, and includes:

[0081] The equipment screening module marks all the power equipment in the substation, queries the status attributes of the power equipment, and screens the equipment to be tested from the power equipment;

[0082] Power equipment refers to all equipment involved in power substation operations contained in the substation, and serves as the basis for building the substation. The state attribute is used to indicate whether the power equipment needs to participate in subsequent multi-dimensional parameter measurements. Different state attributes represent different measurement requirements.

[0083] State attributes include static attributes and dynamic attributes; static attributes refer to the situation when the power equipment is in shutdown or low-load operation state, at which time the power equipment does not need to perform parameter measurement, and dynamic attributes refer to the situation when the power equipment is in operation or high-load operation state, at which time the power equipment needs to perform parameter measurement;

[0084] The identification methods of static attributes and dynamic attributes include:

[0085] The substation work area in the substation is queried through the drawing management system, and the equipment located in the substation work area is recorded as power equipment; the substation work area refers to the area where the direct equipment used to realize the normal step-up and step-down operations of the substation is located, which can distinguish the overall area of ​​the substation and also identify the equipment attributes in different areas;

[0086] Query the operation log of the power equipment at the current moment through the operation management system, and query the potential value in the operation log;

[0087] Record the operation log with a potential value of 1 as a dynamic log, and record the state attribute of the power equipment corresponding to the dynamic log as a dynamic attribute;

[0088] The operation log with a potential value of 0 is recorded as a static log, and the state attribute of the power equipment corresponding to the dynamic log is recorded as a static attribute.

[0089] It should be noted that the potential value is a numerical representation of whether the power equipment is in a normal working state at the current moment. When the potential value is 1, it means that the power equipment is in a high potential and normal working state at this moment, and the power equipment can perform subsequent parameter measurements. Conversely, when the potential value is 0, it means that the power equipment is in a low potential and non-working state at this moment, and the power equipment cannot perform subsequent parameter measurements.

[0090] The device under test refers to the electric device that needs to be measured by non-contact parameters in the future, so that the electric devices with different state attributes can be distinguished, and the device under test can be directly used for the subsequent non-contact parameter measurement, thereby effectively avoiding the interference caused by the device that does not meet the non-contact parameter measurement.

[0091] The screening methods for the devices under test include:

[0092] When the state attribute of the power equipment is a static attribute, the power equipment is not in a normal working state of high potential at the current moment, and the power equipment does not meet the requirements of subsequent non-contact parameter measurement, and the power equipment is not recorded as a device to be tested;

[0093] When the state attribute of the power equipment is a dynamic attribute, the power equipment is in a normal working state with a high potential at the current moment, and the power equipment meets the requirements of subsequent non-contact parameter measurement. The power equipment is recorded as a device under test, and A devices under test are obtained.

[0094] A path planning module marks the device points corresponding to the device to be tested on the electronic map, and plans a measurement path on the electronic map based on the path planning criteria;

[0095] The equipment point refers to the point corresponding to the specific geographical location of the equipment under test on the power map of the substation, so as to accurately describe the distribution of the equipment under test and provide precise location guidance for the subsequent measurement of multi-dimensional parameters of the equipment under test;

[0096] The marking methods for equipment points include:

[0097] The electronic map of the substation is queried through the map management system, the substation work area is identified on the electronic map, and the locations of the power equipment in the substation work area are marked one by one to obtain the original locations;

[0098] The position numbers of the original points and the position numbers of the devices to be tested are queried one by one through the drawing management system, and the original points with the same position numbers as the devices to be tested are recorded as device points to obtain A device points.

[0099] It should be noted that the location number is a digital representation of the specific location of the power equipment in the substation. Since the substation occupies a large area and contains a large number of equipment, the location of each device in the substation will be marked when the substation is designed, and the specific longitude and latitude of each device and other geographical information will be represented by the location number. On the other hand, the location number may not represent the longitude and latitude. When the substation area is divided into units during the design of the substation drawings, each device corresponds to a unit. At this time, the location number can be represented by the specific number of the unit. Therefore, the location number here can be used as information to determine the specific location of the power equipment in the substation.

[0100] After marking the equipment points, the positions of the equipment to be tested that need to be measured in the substation are determined. Then, according to the specific positions of each equipment to be tested, a route for subsequent non-contact measurement of multi-dimensional parameters of the equipment to be tested needs to be planned, so that the measuring equipment can perform non-contact parameter measurement on the planned route. Therefore, the route is recorded as the measurement path.

[0101] When planning the measurement path, it is necessary to ensure that the measurement path does not go back as much as possible, the total travel distance is as small as possible, and each device under test can be measured effectively and correctly. Therefore, it is necessary to set path planning criteria to plan and limit the measurement path;

[0102] The path planning principle is: there are no repeated target roads or auxiliary roads in the measurement path; this ensures that the planned measurement path can maintain the effect of one-way movement, avoids the phenomenon of repeated passing of the same target road or auxiliary road, and can reduce the passing distance of the measurement path as much as possible, thereby speeding up the parameter measurement operation of the device to be measured;

[0103] The planning methods of the measurement path include:

[0104] Mark all inspection roads on the electronic map, and measure the distances from A equipment points to all inspection roads one by one to obtain the point-to-road distance values;

[0105] The inspection road corresponding to the minimum point-to-road distance value in the four directions of east, south, west and north of the equipment point is recorded as the target road, and the inspection road connecting two adjacent target roads is recorded as the auxiliary road; by identifying the circuit distance values ​​in the four directions of east, south, west and north of the equipment point, it can ensure that the inspection roads around the equipment point can be comprehensively and accurately screened out, and at the same time, the inspection roads around the equipment point can be accurately marked, providing a necessary and sufficient basis for the planning of subsequent measurement paths, and improving the planning accuracy of the measurement paths;

[0106] Mark the equipment point closest to the substation inlet and the equipment point closest to the substation outlet on the electronic map, and record them as the inlet point and outlet point respectively;

[0107] Take the import point as the starting point of the path, the export point as the end point of the path, and the remaining A-2 equipment points as the waypoints, and draw C non-repetitive paths to be verified between the target road and the auxiliary road;

[0108] The path lengths of the C paths to be verified are measured one by one, and the path to be verified corresponding to the minimum value of the path length is recorded as the measured path.

[0109] It should be noted that after the measurement path is planned, when the measuring device moves on the measurement path for non-contact parameter measurement, it can be ensured that each device under test can be correctly measured by the measured component, thereby ensuring that the measurement path can provide accurate and reasonable measurement guidance for the measuring device, thereby improving the efficiency of parameter measurement.

[0110] The measuring point marking module marks the target measuring point on the measuring path, formulates the target priority, and controls the measuring equipment to move to the target measuring point according to the target priority;

[0111] The target measurement point refers to the best point on the measurement path when performing non-contact measurement of multi-dimensional parameters of each device under test. Since the position of each device under test is different, the specific position of the target measurement point of each device under test is also different. Therefore, the number of target measurement points is consistent with the number of devices under test, that is, the number of target measurement points is A;

[0112] Methods for marking target measurement points include:

[0113] Using the preset length as the interval standard, D points to be measured are marked one by one on the measurement path; the preset length as the interval refers to the minimum interval length between two adjacent target measurement points, which can limit the distribution position and spacing of the target measurement points to avoid the phenomenon that two adjacent target measurement points are too close or too far away;

[0114] Measure the straight-line distances between A equipment points and D points to be measured one by one, and obtain E point-to-point distance values;

[0115] The point to be measured corresponding to the minimum value of the point-to-point distance values ​​of A device points is recorded as the target measurement point, and A target measurement points are obtained.

[0116] It should be noted that the order of the A target measurement points on the measurement path is not necessarily consistent with the order of the A equipment points. The order of the A target measurement points on the measurement path may be disordered. Therefore, in order to further limit the obtained A target measurement points, it is necessary to arrange the order of the A target measurement points, so as to formulate the target priority, so that the target priority can provide a basis for the parameter measurement order of the subsequent equipment to be measured;

[0117] The target priority is: on the measurement path, the target measurement point with a smaller path length from the path starting point has a higher priority; the path length refers to the distance the target measurement point moves on the measurement path when it moves along the measurement path to the device under test;

[0118] After the target priority is obtained, it is necessary to control the measuring device to move in sequence on the measuring path according to the target priority and reach the corresponding target measuring points one by one according to the target priority, so as to ensure that the measuring device can perform non-contact parameter measurement operation on the device to be measured at the target measuring point;

[0119] The measuring device refers to an inspection robot that integrates relevant monitoring components such as infrared thermal imagers, laser rangefinders, ultrasonic sensors and acoustic sensors. The inspection robot has built-in central controllers, positioning chips, wireless transmission modules and other modules, which can achieve wireless communication between the measuring device and the substation remote control terminal, so that the substation remote control terminal can control the measuring device to move on the measuring path and accurately reach the predetermined target measuring point;

[0120] When it is necessary to control the measuring device to move to the target measuring point, it is necessary to number the order of arrival of the device points according to the target priority of each target measuring point. Specifically, the device to be tested corresponding to the target measuring point with the highest target priority is used as the first target for parameter measurement of the measuring device, and is numbered 1, and so on. The device to be tested corresponding to the target measuring point with the lowest target priority is used as the last target for parameter measurement of the measuring device, and is numbered A. After all the devices to be tested are numbered, the measuring device is controlled to reach the predetermined target measuring points on the measurement path in order from small to large numbers for non-contact parameter measurement.

[0121] The parameter measurement module calculates the measurement coefficient of the target measurement point, selects the corresponding measurement mode, and measures the multi-dimensional parameters of the device under test in the measurement mode. The multi-dimensional parameters include excess temperature value, maximum noise value, and vibration time difference value;

[0122] The measurement coefficient refers to a numerical representation of the difficulty of measurement synchronization between the device under test and the target measurement point, thereby representing target measurement points with different measurement synchronization difficulties, and selecting the corresponding measurement mode according to the measurement coefficient to ensure that the device under test can perform efficient and accurate non-contact measurement of multi-dimensional parameters at the target measurement point;

[0123] The calculation method of the measurement coefficient includes:

[0124] Query the heights of A devices to be tested one by one through the technical parameter table to obtain A height values;

[0125] Mark the minimum value of the point-to-point distances from A equipment points to A target measurement points one by one to obtain A minimum distance values;

[0126] Based on the A height values ​​and the A minimum distance values, A measurement coefficients are obtained;

[0127] The expression of the measurement coefficient is:

[0128] ;

[0129] In the formula, For the The measurement coefficients, For the Height values, For the The minimum distance value, =1,2...A.

[0130] The measurement mode is used to indicate the specific measures of the difficulty of different measurement synchronization, so as to distinguish the measurement methods selected for different devices under test and different target measurement points;

[0131] The measurement mode includes a synchronous measurement mode and an asynchronous measurement mode; the synchronous measurement mode refers to a mode in which the measurement device starts the measurement components corresponding to the multi-dimensional parameters synchronously at the target measurement point without contact measurement, and the asynchronous measurement mode refers to a mode in which the measurement device starts the measurement components corresponding to the multi-dimensional parameters one by one at the target measurement point without contact measurement;

[0132] The selection methods of synchronous measurement mode and asynchronous measurement mode include:

[0133] The measurement coefficients of the A target measurement points are compared one by one with the preset measurement thresholds; the preset measurement thresholds are critical values ​​of the measurement coefficients when the synchronous measurement mode or the asynchronous measurement mode is selected, and the corresponding measurement coefficients under different measurement modes can be distinguished, so as to serve as the numerical basis for subsequent judgment of the specific measurement mode;

[0134] When the measurement coefficient of the target measurement point is less than the preset measurement threshold, it means that the target measurement point is less difficult to measure synchronously. At this time, if the target point needs to be measured synchronously, the synchronous measurement mode is selected.

[0135] When the measurement coefficient of the target measurement point is greater than or equal to the preset measurement threshold, it means that it is difficult to measure the target measurement point synchronously. At this time, if the target point needs to be measured one by one, the asynchronous measurement mode is selected.

[0136] When the measuring device selects the corresponding measurement mode at the target measurement point, the corresponding measurement component can be controlled to work, and the multi-dimensional parameters of the device to be measured can be collected in a non-contact manner, so that the multi-dimensional parameters can represent the real operating state of the device to be measured in a multi-dimensional manner. For example, when the synchronous measurement mode is selected, after the measuring device moves to the target measurement point, all the measurement components are started synchronously, and the non-contact measurement operation of the multi-dimensional parameters of the device to be measured is performed simultaneously. When the asynchronous measurement mode is selected, after the measuring device moves to the target measurement point, all the measurement components are started in sequence, and the non-contact measurement operation of the multi-dimensional parameters of the device to be measured is performed in the order of starting;

[0137] Multi-dimensional parameters include excess temperature value, maximum noise value, and vibration time difference value;

[0138] The local temperature value is used to indicate the temperature value of the device under test that exceeds the standard temperature when it is in operation, that is, to indicate the temperature condition of the device under test when it is in operation;

[0139] The measurement methods of excess temperature value include:

[0140] Use an infrared thermal imager to take infrared images of A devices under test, and mark the temperature value of each pixel point in the infrared image one by one, which is recorded as a single point temperature value;

[0141] The single point temperature value greater than the standard temperature value is recorded as the abnormal temperature value, and the abnormal temperature value, After subtracting the abnormal temperature values ​​from the standard temperature values, The difference values ​​are accumulated and averaged to obtain A excess temperature values; the standard temperature value refers to the temperature value displayed on the infrared image of the device under test in normal operation, which can be used as the basis for judging abnormal temperature values; the standard temperature value is obtained by collecting the maximum temperature values ​​of a large number of infrared images in normal operation in history and calculating their average value;

[0142] The expression for the excess temperature value is:

[0143] ;

[0144] In the formula, For the The excess temperature value of the device under test, For the The device under test Abnormal temperature values, For the The standard temperature value of the device under test.

[0145] The maximum noise value is used to indicate the maximum decibel value of the working noise of the equipment under test at the target measurement point, which can provide a basis for comparison of whether the working noise of the equipment under test is abnormal during operation. The larger the maximum noise value, the higher the probability of abnormal failure of the equipment under test during operation, and the worse the operating state of the equipment under test. The maximum noise value is obtained through non-contact measurement by the acoustic sensor on the measuring device.

[0146] The vibration time difference is used to measure the difference between the ultrasonic reflection time caused by the vibration speed of the device under test in operation and the standard time, which can be used to indicate the speed of the vibration of the device under test. The larger the vibration time difference is, the faster the vibration speed of the device under test per unit time is, and the greater the probability of abnormal failure of the device under test is, and the worse the operating state of the device under test is.

[0147] The measurement methods of vibration time difference include:

[0148] A1: Use the ultrasonic sensor to transmit ultrasonic waves to the device under test, and record the emission time of the ultrasonic waves to obtain the emission time;

[0149] A2: The ultrasonic sensor records the moment when the reflected ultrasonic wave is received to obtain the receiving moment;

[0150] A3: The duration between the transmitting time and the receiving time is recorded as the vibration duration to obtain the vibration duration;

[0151] A4: Repeat steps A1-A3 k times to obtain k vibration durations, and then add up the k vibration durations and calculate the average to obtain A sub-durations;

[0152] A5: After subtracting A sub-time lengths from the preset standard time length one by one, A vibration time difference values ​​are obtained; the preset standard time length refers to the maximum value of the vibration time difference value of the device under test in normal operation, which can provide a basis for comparing the time difference value corresponding to the vibration phenomenon of the current device under test, thereby improving the calculation accuracy of subsequent vibration time difference values;

[0153] The expression of the vibration time difference is:

[0154] ;

[0155] In the formula, For the The vibration time difference value of the device under test, For the The duration of each device under test, For the The preset standard duration of each device under test.

[0156] The parameter reporting module identifies the parameter attributes of the multi-dimensional parameters, divides the multi-dimensional parameters, and generates a parameter report sheet based on the divided multi-dimensional parameters;

[0157] After the measuring device has performed non-contact measurement of the multi-dimensional parameters of A devices under test at the target measuring point, the measured multi-dimensional parameters can be analyzed and processed, and the parameter attributes of the multi-dimensional parameters can be identified. The multi-dimensional parameters can be distinguished again according to the parameter attributes to meet the subsequent display operation of the multi-dimensional parameters;

[0158] Parameter attributes include reliable parameters and unreliable parameters; reliable parameters are used to represent the attributes of multi-dimensional parameters with abnormalities, and unreliable parameters are used to represent the attributes of multi-dimensional parameters without abnormalities;

[0159] Methods for identifying reliable and unreliable parameters include:

[0160] Compare the excess temperature value with the safe temperature value; the safe temperature value means that the excess temperature value is recorded as a critical value between a reliable parameter and an unreliable parameter, that is, the minimum value of the excess temperature value that causes a negative impact on the device under test can be limited;

[0161] When the excess temperature value is greater than or equal to the safe temperature value, the excess temperature value at this time will have a negative impact on the device under test, and the excess temperature value will be identified as an unreliable parameter;

[0162] When the excess temperature value is less than the safe temperature value, the excess temperature value at this time will not have a negative impact on the device under test, and the excess temperature value is identified as a reliable parameter;

[0163] Compare the maximum noise value with the safe noise value; the safe noise value means that the maximum noise value is recorded as the critical value between the reliable parameter and the unreliable parameter, which can limit the minimum value of the maximum noise value that has a negative impact on the device under test;

[0164] When the maximum noise value is greater than or equal to the safe noise value, the maximum noise value at this time will have a negative impact on the device under test, and the maximum noise value is identified as an unreliable parameter;

[0165] When the maximum noise value is less than the safe noise value, the maximum noise value at this time will not have a negative impact on the device under test, and the maximum noise value is identified as a reliable parameter;

[0166] Compare the vibration time difference value with the safety time difference value; the safety time difference value refers to the critical value between the vibration time difference value recorded as a reliable parameter and an unreliable parameter, which can limit the minimum value of the vibration time difference value that causes a negative impact on the equipment under test;

[0167] When the vibration time difference value is greater than or equal to the safety time difference value, the vibration time difference value at this time will have a negative impact on the device under test, and the vibration time difference value will be identified as an unreliable parameter;

[0168] When the vibration time difference value is less than the safety time difference value, the vibration time difference value at this time will not have a negative impact on the device to be tested, and the vibration time difference value is identified as a reliable parameter.

[0169] After the multi-dimensional parameters of each device under test are identified, different multi-dimensional parameters can be distinguished according to different parameter attributes, and the distinguished multi-dimensional parameters can be arranged, and finally a parameter report sheet can be generated, so that the parameter report sheet can accurately and comprehensively display the multi-dimensional parameters of each device under test, which is convenient for subsequent observation and understanding;

[0170] The method of generating a parameter report sheet includes:

[0171] The reliable parameters and unreliable parameters in A devices under test are divided into two sets in turn, so as to obtain A first sets and A second sets; a set is a data set used to aggregate and integrate parameters of different types, so as to achieve the effect of distinguishing and aggregating reliable parameters and unreliable parameters;

[0172] A blank report sheet is selected through the report management system, and A report lines are respectively established in the blank report sheet, and the A report lines are numbered in ascending order from top to bottom. The report sheet is a basic template for constructing a parameter report sheet, and can also provide a large-range position limit for the collection to be imported. The report line is the smallest unit of the report sheet.

[0173] Two parameter positions are constructed in each of the A report lines, which are recorded as the first parameter position and the second parameter position. The parameter position can provide a small range of position limitation for the subsequent import of the set, ensuring that the parameters in different sets can be accurately and orderly imported into the report line.

[0174] The report lines and devices under test with the same number are bound one by one, and the first set and the second set of A devices under test after binding are sequentially imported into the first parameter position and the second parameter position of the A report lines to generate a parameter report sheet.

[0175] It should be noted that by importing the set into the corresponding parameter position in the order of the target measurement point numbers from small to large, it can be ensured that the order of the data generated in the report is consistent with the order of the multi-dimensional parameters collected by the device under test, which can not only achieve the consistency of the parameter measurement order, but also ensure the one-to-one correspondence between the multi-dimensional parameters and the device under test, and prevent the occurrence of confusion and disorder between the multi-dimensional parameters and the device under test.

[0176] In this embodiment, by marking all the power equipment in the substation, the state attributes of the power equipment are queried, and the equipment to be tested is screened out from the power equipment, the equipment point corresponding to the equipment to be tested is marked on the electronic map, and based on the path planning criteria, a measurement path is planned on the electronic map, the target measurement point is marked on the measurement path, the target priority is formulated, and the measurement equipment is controlled to move to the target measurement point according to the target priority, the measurement coefficient of the target measurement point is calculated, the corresponding measurement mode is selected, and the multi-dimensional parameters of the equipment to be tested are measured in the measurement mode, the parameter attributes of the multi-dimensional parameters are identified, the multi-dimensional parameters are divided, and a parameter report is generated according to the divided multi-dimensional parameters; compared with the prior art, it can effectively identify the equipment to be tested that meets the non-contact parameter measurement requirements, and generate a parameter report in the form of a parameter report. The location of the device to be tested is marked on the electronic map, and a measurement path is constructed for orderly and rapid measurement of the device to be tested. This can not only shorten the distance traveled by the measuring equipment in the substation for mobile measurement, but also ensure that all the devices to be tested can be measured in an orderly manner, avoiding the phenomenon of chaotic and disordered parameter measurement. After marking the target measurement point on the measurement path, according to the different measurement modes of each target measurement point, the measuring equipment is controlled to perform comprehensive and accurate measurement operations on the multi-dimensional parameters of the device to be tested at the target measurement point, and the multi-dimensional parameters are distinguished and displayed in combination with the parameter report sheet, avoiding the inconvenience brought by the traditional contact parameter measurement method, and providing a comprehensive basis for judging the actual operating status of the substation, thus realizing the non-contact measurement effect of the multi-dimensional parameters of the substation.

[0177] Example 2: Please refer to Figure 3 As shown, the part not described in detail in this embodiment is described in the first embodiment, and a non-contact measurement method of multi-dimensional parameters of a substation is provided, which is applied to a measurement server and is implemented based on a non-contact measurement system of multi-dimensional parameters of a substation, including:

[0178] S1: Mark all the power equipment in the substation, query the status attributes of the power equipment, and select the equipment to be tested from the power equipment;

[0179] S2: marking the device point corresponding to the device to be tested on the electronic map, and planning a measurement path on the electronic map based on the path planning criterion;

[0180] S3: Mark the target measurement point on the measurement path, formulate the target priority, and control the measurement equipment to move to the target measurement point according to the target priority;

[0181] S4: Calculate the measurement coefficient of the target measurement point, select the corresponding measurement mode, and measure the multi-dimensional parameters of the device under test in the measurement mode, where the multi-dimensional parameters include excess temperature value, maximum noise value, and vibration time difference value;

[0182] S5: Identify parameter attributes of the multi-dimensional parameters, the parameter attributes include reliable parameters and unreliable parameters, divide the multi-dimensional parameters, and generate a parameter report sheet based on the divided multi-dimensional parameters.

[0183] Example 3: Please refer to Figure 4 As shown, this embodiment discloses an electronic device, including a processor and a memory;

[0184] Wherein, the memory stores a computer program that can be called by the processor;

[0185] The processor executes the non-contact measurement method for multi-dimensional parameters of a substation by calling the computer program stored in the memory.

[0186] Since the electronic device introduced in this embodiment is an electronic device used to implement a non-contact measurement method for multi-dimensional parameters of a substation in Example 2 of this application, based on the non-contact measurement method for multi-dimensional parameters of a substation introduced in the embodiment of this application, a person skilled in the art can understand the specific implementation method of the electronic device of this embodiment and its various variations, so how the electronic device implements the method in the embodiment of this application is not described in detail here. As long as a person skilled in the art implements the electronic device used by a non-contact measurement method for multi-dimensional parameters of a substation in the embodiment of this application, it belongs to the scope of protection of this application.

[0187] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A non-contact measurement system for multi-dimensional parameters of a substation, applied to a measurement server, characterized in that: include: The equipment screening module is used to mark all the power equipment in the substation, query the status attributes of the power equipment, and screen the equipment to be tested from the power equipment; A path planning module is used to mark the device points corresponding to the device to be tested on the electronic map, and plan a measurement path on the electronic map based on the path planning criteria; A measuring point marking module is used to mark the target measuring point on the measuring path, formulate the target priority, and control the measuring device to move to the target measuring point according to the target priority; Methods for marking target measurement points include: Using the preset length as the interval standard, mark D points to be measured on the measurement path one by one; Measure the straight-line distances between A equipment points and D points to be measured one by one, and obtain E point-to-point distance values; The point to be measured corresponding to the minimum point-to-point distance value of A equipment points is recorded as the target measurement point, and A target measurement points are obtained; The target priority is: on the measurement path, the target measurement point with a smaller path length from the path starting point has a higher priority; The parameter measurement module is used to calculate the measurement coefficient of the target measurement point, select the corresponding measurement mode, and measure the multi-dimensional parameters of the device under test in the measurement mode. The multi-dimensional parameters include excess temperature value, maximum noise value and vibration time difference value; The calculation method of the measurement coefficient includes: Query the heights of A devices to be tested one by one through the technical parameter table to obtain A height values; Mark the minimum value of the point-to-point distances from A equipment points to A target measurement points one by one, and obtain A minimum distance values; Based on the A height values ​​and the A minimum distance values, A measurement coefficients are obtained; The expression of the measurement coefficient is: ； In the formula, For the The measurement coefficients, For the Height values, For the The minimum distance value, =1,2...A; The measurement mode includes a synchronous measurement mode and an asynchronous measurement mode. The selection method of the synchronous measurement mode and the asynchronous measurement mode includes: Compare the measurement coefficients of A target measurement points with the preset measurement thresholds one by one; When the measurement coefficient of the target measurement point is less than the preset measurement threshold, the synchronous measurement mode is selected; When the measurement coefficient of the target measurement point is greater than or equal to the preset measurement threshold, the asynchronous measurement mode is selected; The parameter reporting module is used to identify the parameter attributes of the multi-dimensional parameters, the parameter attributes including reliable parameters and unreliable parameters, divide the multi-dimensional parameters, and generate a parameter report sheet based on the divided multi-dimensional parameters.

2. A non-contact measurement system for multi-dimensional parameters of a substation according to claim 1, characterized in that: State attributes include static attributes and dynamic attributes. The identification methods of static attributes and dynamic attributes include: The substation work area in the substation is queried through the drawing management system, and the equipment located in the substation work area is recorded as power equipment; Query the operation log of the power equipment at the current moment through the operation management system, and query the potential value in the operation log; Record the operation log with a potential value of 1 as a dynamic log, and record the state attribute of the power equipment corresponding to the dynamic log as a dynamic attribute; Record the operation log with a potential value of 0 as a static log, and record the state attribute of the power equipment corresponding to the dynamic log as a static attribute; The screening methods for the devices under test include: When the state attribute of the power equipment is a static attribute, the power equipment is recorded as a device to be tested; When the state attribute of the electric power equipment is a dynamic attribute, the electric power equipment is recorded as a device to be tested, and A devices to be tested are obtained.

3. A non-contact measurement system for multi-dimensional parameters of a substation according to claim 2, characterized in that: The marking methods for equipment points include: The electronic map of the substation is queried through the map management system, the substation work area is identified on the electronic map, and the locations of the power equipment in the substation work area are marked one by one to obtain the original locations; The position numbers of the original points and the position numbers of the devices to be tested are queried one by one through the drawing management system, and the original points with the same position numbers as the devices to be tested are recorded as device points to obtain A device points.

4. A non-contact measurement system for multi-dimensional parameters of a substation according to claim 3, characterized in that: The path planning criteria are: there are no repeated target roads or auxiliary roads in the measurement path; The planning methods of the measurement path include: Mark all inspection roads on the electronic map, and measure the distances from A equipment points to all inspection roads one by one to obtain the point-to-road distance values; The inspection road corresponding to the minimum point-to-road distance value in the four directions of east, south, west and north of the equipment point is recorded as the target road, and the inspection road connecting two adjacent target roads is recorded as the auxiliary road; Mark the equipment point closest to the substation inlet and the equipment point closest to the substation outlet on the electronic map, and record them as the inlet point and outlet point respectively; Take the import point as the starting point of the path, the export point as the end point of the path, and the remaining A-2 equipment points as the waypoints, and draw C non-repetitive paths to be verified between the target road and the auxiliary road; The path lengths of the C paths to be verified are measured one by one, and the path to be verified corresponding to the minimum value of the path length is recorded as the measured path.

5. A non-contact measurement system for multi-dimensional parameters of a substation according to claim 4, characterized in that: The measurement methods of excess temperature value include: Use an infrared thermal imager to take infrared images of A devices under test, and mark the temperature value of each pixel point in the infrared image one by one, which is recorded as a single point temperature value; The single point temperature value greater than the standard temperature value is recorded as the abnormal temperature value, and the abnormal temperature value, After subtracting the abnormal temperature values ​​from the standard temperature values, The differences are accumulated and averaged to obtain A excess temperature values; The expression for the excess temperature value is: ； In the formula, For the The excess temperature value of the device under test, For the The device under test Abnormal temperature values, For the The standard temperature value of the device under test.

6. A non-contact measurement system for multi-dimensional parameters of a substation according to claim 5, characterized in that: The measurement methods of vibration time difference include: A1: Use the ultrasonic sensor to transmit ultrasonic waves to the device under test, and record the emission time of the ultrasonic waves to obtain the emission time; A2: The ultrasonic sensor records the moment when the reflected ultrasonic wave is received to obtain the receiving moment; A3: The duration between the transmitting time and the receiving time is recorded as the vibration duration to obtain the vibration duration; A4: Repeat steps A1-A3 k times to obtain k vibration durations, and then add up the k vibration durations and calculate the average to obtain A sub-durations; A5: Subtract the A sub-durations from the preset standard duration one by one to obtain A vibration time difference values; The expression of the vibration time difference is: ； In the formula, For the The vibration time difference value of the device under test, For the The duration of each device under test, For the The preset standard duration of each device under test.

7. A non-contact measurement system for multi-dimensional parameters of a substation according to claim 6, characterized in that: Methods for identifying reliable and unreliable parameters include: Compare the excess temperature value with the safe temperature value; When the excess temperature value is greater than or equal to the safe temperature value, the excess temperature value is identified as an unreliable parameter, and when the excess temperature value is less than the safe temperature value, the excess temperature value is identified as a reliable parameter; Compare the maximum noise value with the safe noise value; When the maximum noise value is greater than or equal to the safety noise value, the maximum noise value is identified as an unreliable parameter, and when the maximum noise value is less than the safety noise value, the maximum noise value is identified as a reliable parameter; Compare the vibration time difference value with the safety time difference value; When the vibration time difference value is greater than or equal to the safety time difference value, the vibration time difference value is identified as an unreliable parameter, and when the vibration time difference value is less than the safety time difference value, the vibration time difference value is identified as a reliable parameter.

8. A non-contact measurement system for multi-dimensional parameters of a substation according to claim 7, characterized in that: The method of generating a parameter report sheet includes: Sequentially divide the reliable parameters and unreliable parameters in A devices under test into two sets to obtain A first sets and A second sets; Screen out blank report sheets through the report management system, create A report lines in parallel in the blank report sheets, and number the A report lines in ascending order from top to bottom; Construct two parameter positions in each of the A report lines, which are recorded as the first parameter position and the second parameter position; The report lines and devices under test with the same number are bound one by one, and the first set and the second set of A devices under test after binding are sequentially imported into the first parameter position and the second parameter position of the A report lines to generate a parameter report sheet.

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