A new energy box-type substation temperature measuring point arrangement method

Abstract

The application discloses a new energy box-type substation temperature measuring point arrangement method, comprising the following steps: detecting a to-be-measured member by using an infrared thermal imager to determine a target temperature measuring area and a corresponding reference temperature value; determining an arrangement mode of temperature measuring points in the target temperature measuring area; detecting the temperature measuring points by using a temperature sensor based on different arrangement modes to obtain at least three average temperature values of the target temperature measuring area; and determining a final arrangement mode of the temperature sensor according to the at least three average temperature values and the reference temperature value. By using the temperature measuring point arrangement method, the temperature of the to-be-measured member can be accurately obtained, and the operation complexity of the temperature rise experiment can be reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of transformer substations, and particularly relates to a temperature measurement point arrangement method for a new energy box-type transformer substation. BACKGROUND

[0002] The new energy box-type transformer substation will continuously generate heat in a long-term operation process, but the internal structure of the box-type transformer substation is compact, which has an adverse effect on the heat dissipation effect of the transformer substation. In order to ensure that the box-type transformer substation can be operated safely and stably for a long time, the box-type transformer substation needs to be subjected to a temperature rise experiment before leaving the factory, so as to detect the quality of each device in the box-type transformer substation. In the temperature rise experiment process, a plurality of temperature measurement points are arranged around the devices in the box-type transformer substation, temperature sensors are arranged at the temperature measurement points to measure the temperature, so as to detect whether the temperature of each device in the temperature rise experiment process can meet the quality requirements. When the temperature rise experiment is performed, the arrangement mode of the temperature measurement points will affect the temperature detection result and the operation complexity of the temperature rise experiment, and currently there is a lack of research on the arrangement mode of the temperature measurement points. SUMMARY

[0003] The application aims to provide a temperature measurement point arrangement method for a new energy box-type transformer substation, reduce the influence of the arrangement mode of the temperature measurement points on the temperature detection result, and reduce the operation complexity of the temperature rise experiment.

[0004] To solve the above technical problems, the application is implemented as follows:

[0005] The embodiment of the application proposes a temperature measurement point arrangement method for a new energy box-type transformer substation, which comprises the following steps: detecting a to-be-measured part by using an infrared thermal imager to determine a target temperature measurement region and a corresponding reference temperature value;

[0006] determining an arrangement mode of temperature measurement points in the target temperature measurement region;

[0007] detecting the temperature measurement points by using temperature sensors based on different arrangement modes to obtain at least three average temperature values of the target temperature measurement region;

[0008] determining a final arrangement mode of the temperature sensors according to the at least three average temperature values and the reference temperature value.

[0009] Optionally, the step of detecting the temperature measurement points by using temperature sensors based on different arrangement modes to obtain at least three average temperature values of the target temperature measurement region comprises the following steps:

[0010] arranging temperature sensors at the temperature measurement points based on each arrangement mode, and detecting and obtaining average temperature values of the target temperature measurement region;

[0011] At least three average temperature values are detected based on at least three different arrangements.

[0012] Optionally, the arrangement of the temperature sensor at the temperature measurement point and the detection of the average temperature value of the target temperature measurement region based on each arrangement include:

[0013] At least one temperature sensor is arranged at each temperature measurement point based on each arrangement.

[0014] The temperature measurement point is detected by the temperature sensor to obtain a measured temperature of the temperature measurement point.

[0015] Based on the measured temperature, an average temperature value corresponding to the arrangement is calculated.

[0016] Optionally, two temperature sensors are arranged at each temperature measurement point, one of which is a first temperature sensor and the other is a second temperature sensor. Arranging at least one temperature sensor at each temperature measurement point includes:

[0017] The first temperature sensor and the second temperature sensor are arranged at the temperature measurement point, and the first temperature sensor is in contact with the measured object, and the second temperature sensor has a gap from the measured object.

[0018] Optionally, the detection of the temperature measurement point by the temperature sensor to obtain a measured temperature of the corresponding temperature measurement point includes:

[0019] The first temperature is detected by the first temperature sensor, and the second temperature is detected by the second temperature sensor.

[0020] Based on the first temperature and the second temperature, the measured temperature is calculated.

[0021] Optionally, the calculation of the measured temperature based on the first temperature and the second temperature includes:

[0022] A preset correction coefficient is determined.

[0023] Based on the first temperature, the second temperature, and the preset correction coefficient, the measured temperature is calculated.

[0024] Optionally, the calculation of the measured temperature based on the first temperature, the second temperature, and the preset correction coefficient includes:

[0025] The measured temperature is calculated based on a formula T=αT1-T2, wherein α is the preset correction coefficient, T1 is the first temperature, T2 is the second temperature, and T is the measured temperature.

[0026] Optionally, the determining of the preset correction coefficient comprises:

[0027] Optionally, the determining of the preset correction coefficient comprises:

[0028] Optionally, the determining of the preset correction coefficient comprises:

[0029] Optionally, the determining of the preset correction coefficient comprises:

[0030] Optionally, the determining of the preset correction coefficient comprises:

[0031] Optionally, the determining of the preset correction coefficient comprises:

[0032] Optionally, the determining of the preset correction coefficient comprises:

[0033] Optionally, the determining of the preset correction coefficient comprises:

[0034] Optionally, the determining of the preset correction coefficient comprises:

[0035] Optionally, the determining of the preset correction coefficient comprises:

[0036] Optionally, the determining of the preset correction coefficient comprises:

[0037] Optionally, the determining of the preset correction coefficient comprises:

[0038] In the embodiment of the present application, the target temperature measuring area of the to-be-measured member and the corresponding reference temperature value are determined by using an infrared thermal imager; temperature measuring points in different arrangement modes are arranged in the target temperature measuring area; based on the different arrangement modes, the temperature measuring points are detected by using temperature sensors to obtain at least three average temperature values of the target temperature measuring area; and finally, the arrangement mode of the temperature sensors is determined according to the at least three average temperature values and the reference temperature value, so that the accuracy of the temperature measurement result of the to-be-measured member is ensured while the arrangement mode of the temperature measuring points is simplified.

[0039] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0040] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the appended drawings.

[0041] Figure 1 is a flow chart of a temperature measuring point arrangement method of a new energy box-type substation according to the embodiment of the present application;

[0042] Figure 2 is a schematic diagram of a new energy box-type substation in the embodiment of the present application;

[0043] Figure 3 is a schematic diagram of the internal structure of a low-voltage chamber and a high-voltage chamber in the embodiment of the present application;

[0044] Figure 4 is a flow chart of a preset correction coefficient confirmation method in the embodiment of the present application;

[0045] Figure 5 is a schematic diagram of a partial structure of a low-voltage chamber in the embodiment of the present application;

[0046] Figure 6 is a top view schematic diagram of a partial structure of a low-voltage chamber in the embodiment of the present application.

[0047] REFERENCE NUMERALS:

[0048] 200: low-voltage chamber; 210: frame circuit breaker; 220: partition; 230: flexible connection; 231: flexible connection phase B; 240: molded case circuit breaker; 250: main bus; 260: current transformer; 300: transformer chamber; 400: high-voltage chamber. DETAILED DESCRIPTION

[0049] The embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only, for the purpose of explanation, and are not to be understood as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0050] The terms "first", "second" in the description and claims of the present application can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / ", generally means that the front and rear associated objects are in an "or" relationship.

[0051] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0052] In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0053] Before explaining the arrangement method of the temperature measuring point of the new energy box-type substation in the embodiments of the present application, the application scenario of the arrangement method of the temperature measuring point of the new energy box-type substation will be described in detail:

[0054] The new energy box-type substation is a kind of high-voltage switchgear, such as Figure 2As shown, the box-type substation includes a low-voltage chamber 200, a transformer chamber 300, and a high-voltage chamber 400. Due to the compact layout of the chambers inside the box-type substation, the box-type substation has the advantages of small volume and small footprint. However, during the long-term operation of the box-type substation, heat is continuously generated by the internal devices. The compact structure design makes it difficult for the heat inside the box-type substation to be quickly and effectively dissipated. Whether the heat will affect the normal operation of the devices in the box-type substation is an important factor for the safe and stable operation of the box-type substation. Therefore, before the box-type substation is put into operation, a safety performance test needs to be performed. The conventional safety performance test includes a temperature rise experiment.

[0055] The temperature rise experiment simulates the temperature condition of the box-type substation system during actual operation, verifies whether the temperature rise of the devices inside the box-type substation meets the temperature rise limit requirement, and further determines whether the structure design inside the substation is reasonable and whether the quality of the devices is qualified.

[0056] Specifically, a plurality of temperature measurement points need to be arranged around the to-be-tested device, and a temperature sensor is arranged at each temperature measurement point. The temperature of each temperature measurement point is measured by the temperature sensor to detect whether the temperature of the to-be-tested device can meet the temperature limit. However, at the beginning of the current temperature rise experiment, a large number of temperature measurement points need to be arranged to obtain accurate measurement temperature. However, arranging a large number of temperature measurement points not only makes the measurement process complicated, but also increases the experimental cost. Therefore, the present application provides a method for arranging temperature measurement points of a new energy box-type substation, which can not only reduce the complexity of the measurement process and bring convenience to the experimental operator, but also reduce the experimental cost.

[0057] The method for arranging temperature measurement points of a new energy box-type substation provided by the embodiments of the present application will be described in detail below in combination with the accompanying drawings and specific examples and application scenarios.

[0058] As shown in the accompanying drawings, Figure 1 According to the method for arranging temperature measurement points of a new energy box-type substation according to some embodiments of the present application, the following steps are included:

[0059] In step 110, an infrared thermal imager is used to detect the to-be-tested device to determine a target temperature measurement region and a corresponding reference temperature value.

[0060] In step 120, an arrangement mode of temperature measurement points in the target temperature measurement region is determined.

[0061] In step 130, based on different arrangement modes, a temperature sensor is used to detect the temperature measurement points to obtain at least three average temperature values of the target temperature measurement region.

[0062] Step 140, determining the final arrangement of the temperature sensor according to at least three average temperature values and the reference temperature value.

[0063] According to some embodiments of the present application, by using an infrared thermal imager to detect the measured object, the target temperature measurement region and the corresponding reference temperature value are determined; the arrangement of the temperature measurement points in the target temperature measurement region is determined; based on different arrangements, temperature sensors are used to detect the temperature measurement points to obtain at least three average temperature values of the target temperature measurement region; and the final arrangement of the temperature sensor is determined according to at least three average temperature values and the reference temperature value. This arrangement not only can accurately obtain the temperature of the measured object, but also can reduce the complexity of the temperature rise experiment.

[0064] Specifically, the arrangement of the temperature measurement points includes the number of temperature measurement points arranged in the target temperature measurement region and the arrangement structure of the plurality of temperature measurement points in the target temperature measurement region. For example, M rows and N columns of temperature measurement points can be arranged in the target temperature measurement region, the number of temperature measurement points is MxN, and the temperature measurement points are arranged in a rectangular array.

[0065] Further, by changing the number of rows and / or columns of temperature measurement points and changing the spacing between adjacent two temperature measurement points, a plurality of different arrangements can be obtained. It can be understood that the spacing between each temperature measurement point can be flexibly adjusted according to actual measurement requirements, and the present embodiment does not limit it.

[0066] In another embodiment, the arrangement structure of the temperature measurement points arranged in the target temperature measurement region can be a rectangular array, a circular array, a ring array, a hexagonal array, etc. It can be understood that the specific arrangement structure of the temperature measurement points can be adjusted according to actual requirements, and the present embodiment does not limit it.

[0067] In addition, the spacing distance between adjacent two temperature measurement points can be equal or not equal, and the specific spacing distance can be flexibly adjusted according to actual requirements, and the present embodiment does not limit it.

[0068] Specifically, the arrangement of the temperature measurement points in the target temperature measurement region in the form of M rows and N columns is taken as the first arrangement, a temperature sensor is arranged at each temperature measurement point to detect MxN temperature measurement points, obtain the temperature value of each temperature measurement point, and take the average temperature value of MxN temperature values as the first average temperature value of the temperature measurement points in the target temperature measurement region.

[0069] Further, the temperature measurement points of the target temperature measurement region are reduced by one row and one column, that is, M-1 rows and N-1 columns of temperature measurement points are arranged in the target temperature measurement region as a second arrangement mode of temperature measurement points, each temperature measurement point is detected, and a second average temperature value is obtained. Similarly, the number of temperature measurement points is further reduced as a third arrangement mode of temperature measurement points, and a third average temperature value is obtained. Alternatively, the temperature sensor is arranged at the temperature measurement point based on different arrangement modes to detect the temperature measurement point to obtain at least three average temperature values of the target temperature measurement region, including arranging the temperature sensor at the temperature measurement point based on each arrangement mode, and detecting and obtaining the average temperature value of the target temperature measurement region; at least three average temperature values are detected and obtained based on at least three different arrangement modes.

[0070] In the embodiments of the present application, at least three different arrangement modes of temperature measurement points in the target temperature measurement region are determined, the temperature sensor is arranged at the temperature measurement point based on the first arrangement mode, the temperature of the temperature measurement point is detected by the temperature sensor, and the average temperature value of the target temperature measurement region is calculated according to the measurement result; similarly, the average temperature value of the target temperature measurement region based on the second arrangement mode can be obtained, and finally at least three average temperature values of the target temperature measurement region are obtained.

[0071] Alternatively, the temperature sensor is arranged at the temperature measurement point based on each arrangement mode, and the average temperature value of the target temperature measurement region is detected and obtained, including arranging at least one temperature sensor at each temperature measurement point based on each arrangement mode; the temperature measurement point is detected by the temperature sensor to obtain the measurement temperature of the temperature measurement point; and the average temperature value corresponding to the arrangement mode is calculated based on the measurement temperature.

[0072] In the embodiments of the present application, at least one temperature sensor is arranged at each temperature measurement point to detect the temperature measurement point by the temperature sensor, and then the temperature sensor of the plurality of measurement points can detect a plurality of measurement temperatures, and the average value of the plurality of measurement temperatures is calculated as the final measurement temperature of the temperature measurement point, which can effectively improve the accuracy and reliability of the measurement result of the temperature measurement point.

[0073] Alternatively, two temperature sensors are arranged at each temperature measurement point, one of which is a first temperature sensor and the other is a second temperature sensor; the at least one temperature sensor arranged at each temperature measurement point includes arranging the first temperature sensor and the second temperature sensor at the temperature measurement point, and making the first temperature sensor contact the measured object, and the second temperature sensor has a gap from the measured object.

[0074] In the embodiment of the present application, two temperature sensors are arranged at each temperature measurement point, one of the temperature sensors has a probe in contact with the surface of the measured object for measuring the surface temperature of the measured object, and the measured temperature is taken as the first temperature; the other temperature sensor has a probe with a gap from the surface of the measured object for measuring the temperature of the environment near the surface of the measured object, and the measured temperature is taken as the second temperature. The use of two temperature sensors to detect the temperature of the temperature measurement point can reduce the error caused by the measurement of a single temperature sensor and improve the accuracy of the temperature measurement value of the temperature measurement point.

[0075] Specifically, the probe of the first temperature sensor can be pasted on the surface of the measured object for detecting the temperature of the surface of the measured object, and the second temperature sensor can be fixedly connected to the first temperature sensor, and the probe of the second temperature sensor can have a gap from the surface of the measured object for detecting the temperature of the environment near the surface of the measured object; the specific connection mode of the first temperature sensor and the second temperature sensor can be flexibly adjusted, and the embodiment is not limited thereto.

[0076] Optionally, the detection of the temperature measurement point by the temperature sensor and the acquisition of the measured temperature of the corresponding temperature measurement point include the detection of the first temperature sensor to obtain the first temperature and the detection of the second temperature sensor to obtain the second temperature; and the measured temperature is calculated based on the first temperature and the second temperature.

[0077] In the embodiment of the present application, two temperature sensors are arranged at each temperature measurement point, and two temperature measurement values can be measured by the two temperature sensors, and the measured temperature of the corresponding temperature measurement point can be determined by averaging the two temperature measurement values. In this way, the determination of the measured temperature of the temperature measurement point is not only simple and convenient in calculation, but also can improve the accuracy of the measured temperature. It can be understood that when more than two temperature sensors are selected, more than two temperature values can be obtained correspondingly, and the weighted average of the more than two temperature values can be calculated as the measured temperature of the temperature measurement point. The specific calculation mode of the measured temperature can be flexibly selected according to actual needs, and the embodiment is not limited thereto.

[0078] Optionally, the calculation of the measured temperature based on the first temperature and the second temperature includes determining a preset correction coefficient; and the measured temperature is calculated based on the first temperature, the second temperature and the preset correction coefficient.

[0079] In the embodiment of the present application, the first temperature and the second temperature are corrected by the preset correction coefficient, which can reduce the error in the temperature sensor measurement process, improve the accuracy of the temperature value measured by the temperature measurement point, and further improve the reliability of the temperature measurement point arrangement.

[0080] Optionally, the measurement temperature is calculated based on the first temperature, the second temperature and the preset correction coefficient, and the calculation includes calculating the measurement temperature based on the formula T = aT1-T2; wherein a is the preset correction coefficient, T1 is the first temperature, T2 is the second temperature, and T is the measurement temperature.

[0081] In the embodiment of the present application, the measurement temperature is calculated based on the formula T = aT1-T2, which can improve the accuracy of the correction process of the first temperature and the second temperature value, and further improve the accuracy of obtaining the measurement temperature, thereby reducing the measurement error of the temperature sensor and making the measurement result more accurate and reliable.

[0082] Optionally, as shown in Figure 4 The determination of the preset correction coefficient includes the following steps:

[0083] Step 510: Select a target temperature measurement point on the measured object.

[0084] Step 520: Detect the target temperature measurement point using an infrared thermal imager to obtain a third temperature.

[0085] Step 530: Arrange a third temperature sensor and a fourth temperature sensor at the target temperature measurement point, so that the third temperature sensor is in contact with the measured object, and a gap exists between the fourth temperature sensor and the measured object.

[0086] Step 540: Detect a fourth temperature using the third temperature sensor and a fifth temperature using the fourth temperature sensor.

[0087] Step 550: Determine the preset correction coefficient based on the third temperature, the fourth temperature and the fifth temperature.

[0088] In the embodiment of the present application, the above steps can obtain the preset correction coefficient corresponding to each device in the box-type substation. When correcting the measurement temperature of the target temperature measurement area, the corresponding preset correction coefficient can be selected according to the different target temperature measurement areas, which can improve the accuracy of the measurement temperature. In addition, the preset correction coefficient provides a unified temperature correction standard for temperature rise experimental testing of box-type substations with the same structure.

[0089] Specifically, the infrared thermal imager is used to detect the temperature of the target temperature measurement point. In the detection, the power supply of the box-type substation is turned off for the safety of the operator, so that the box-type substation temporarily stops running. After the power supply of the box-type substation is turned off, the door of the substation is opened, and the temperature of the target temperature measurement point is tested to obtain the temperature of the target temperature measurement point.

[0090] In addition, in order to improve the accuracy of the measurement result, the temperature measurement of the target temperature measurement point needs to be repeated at least three times. After the first temperature measurement of the target temperature measurement point is completed by the infrared imager, the power supply is turned on, the box-type substation is restarted, and the power supply is turned off after a period of stable operation for the second temperature measurement of the target temperature measurement point. The above steps are repeated until at least three measurement values are obtained, and the average of the at least three measurement values is taken as the third temperature.

[0091] The third temperature sensor is arranged on the measured member and in contact with the measured member, so that the fourth temperature can be measured by the third temperature sensor. The fourth temperature sensor is connected to the third temperature sensor, and there is a gap between the third temperature sensor and the measured member for detecting the ambient temperature near the measured member, so that the fifth temperature can be measured by the fourth temperature sensor. It should be noted that the third temperature sensor and the fourth temperature sensor can be placed inside the box-type substation, and the temperature of the target temperature measurement point can be monitored in real time during the operation of the box-type substation.

[0092] It can be understood that the temperature measurement of the target temperature measurement point by the third temperature sensor and the fourth temperature sensor also needs to be repeated at least three times corresponding to the third temperature, so as to obtain at least three measurement values, and the average of the at least three measurement values is taken as the fourth temperature and the fifth temperature.

[0093] Optionally, the preset correction coefficient is determined based on the third temperature, the fourth temperature and the fifth temperature, including: the preset correction coefficient is calculated based on the formula α=(K+K2) / K1; wherein α represents the preset correction coefficient, K represents the third temperature, K1 represents the fourth temperature, and K2 represents the fifth temperature.

[0094] In the embodiments of the present application, the temperature of the target temperature measurement point is detected multiple times by the infrared thermal imager, the third temperature sensor and the fourth temperature sensor, and a plurality of temperature values are obtained, and the plurality of temperature values are averaged to obtain the third temperature, the fourth temperature and the fifth temperature. The third temperature, the fourth temperature and the fifth temperature are brought into the formula α=(K+K2) / K1 to calculate the preset correction coefficient. The accuracy of the obtained preset correction coefficient is high, and the reliability of the temperature rise experiment result can be improved.

[0095] Optionally, the determining the final arrangement of the temperature sensor according to the at least three average temperature values and the reference temperature value comprises: determining a difference value of each of the average temperature values and the reference temperature value; and determining the final arrangement based on the difference value and a number of temperature measuring points included in the arrangement.

[0096] In the embodiment of the present application, the difference value of each of the average temperature values and the reference temperature value is calculated, and the arrangement with a smaller difference value and a smaller number of temperature measuring points is selected as the final arrangement by comparing the difference value corresponding to different arrangements and the number of temperature measuring points included in the arrangement, so that the accuracy of the measured temperature of the target temperature measuring area can be ensured, the number of arranged temperature measuring points in the temperature rise experiment can be reduced, the operation complexity of the temperature rise experiment can be reduced, and the workload of the experiment personnel can be reduced; meanwhile, the experimental cost of the temperature rise experiment can be reduced.

[0097] The arrangement method of the temperature measuring points of the new energy box-type substation provided in the present application will be explained and described in detail below through specific embodiments, such as Figure 3 As shown in the figure, the low-voltage chamber 200 in the box-type substation includes a frame circuit breaker 210, a flexible connecting piece 230, a molded case circuit breaker 240, a total bus 250, and a current transformer 260. One end of the flexible connecting piece 230 is connected with the frame circuit breaker 210, and the other end is connected with the current transformer 260. One end of the total bus 250 is connected with the frame circuit breaker 210, and the other end is connected with the current transformer 260. The molded case circuit breaker 240 is connected with the frame circuit breaker 210. As shown in Figure 5 and Figure 6 As shown in the figure, the flexible connecting piece 230 includes a flexible connection a-phase, a flexible connection b-phase 231, and a flexible connection c-phase arranged in sequence and at intervals. A partition plate 220 is installed between adjacent two phases, and the partition plate 220 is connected with the frame circuit breaker 210.

[0098] Since the partition plate 220 hinders the air circulation near the flexible connection b-phase 231, the temperature at this position is relatively high. Therefore, the flexible connection b-phase 231 is taken as an example to be measured below, and the other devices can be measured by reference, which will not be described herein.

[0099] The infrared thermal imager is used to detect the temperature of the soft connection b phase 231, and a temperature distribution diagram corresponding to the soft connection b phase 231 is obtained. Different colors on the temperature distribution diagram represent the temperature. By analyzing and selecting the area with the highest temperature in the temperature distribution diagram, the position of the soft connection b phase 231 corresponding to the area is taken as the target temperature measurement area, and the corresponding temperature is taken as the reference temperature value. From the temperature distribution diagram corresponding to the soft connection b phase 231, it can be seen that the temperature is the highest at the position of 2cm-6cm away from the frame circuit breaker 210, that is, the X area in FIG. 8, so the X area is taken as the target temperature measurement area, and the corresponding temperature 92℃ is taken as the reference temperature value. Figure 5

[0100] In the X area, 20 temperature measurement points are evenly arranged in the form of 5 rows and 4 columns as the first arrangement mode of the temperature measurement points, and the temperature sensor is used to detect the 20 temperature measurement points to obtain a first average temperature value of 92.2℃; in the X area, 12 temperature measurement points are evenly arranged in the form of 4 rows and 3 columns as the second arrangement mode of the temperature measurement points, and the temperature sensor is used to detect the 12 temperature measurement points to obtain a second average temperature value of 92.1℃; in the X area, 6 temperature measurement points are evenly arranged in the form of 3 rows and 2 columns as the third arrangement mode of the temperature measurement points, and the temperature sensor is used to detect the 6 temperature measurement points to obtain a third average temperature value of 89.6℃.

[0101] The reference temperature values of other devices inside the box-type substation and the average temperature values corresponding to each arrangement mode can also be obtained by the above steps, and the specific data is shown in Table 1. Among them, the different arrangement modes of the temperature measurement points can be flexibly adjusted according to the requirements.

[0102] Table 1

[0103]

[0104] From Table 1, it can be seen that the reference temperature of the X area is 92.3℃, the first average temperature is 92.2℃, the difference ΔT1 is 0.1℃, the second average temperature is 92.1℃, the difference ΔT2 is 0.2℃, and the third average temperature is 89.6℃, the difference ΔT3 is 2.7℃. From the three differences ΔT, it can be seen that the difference ΔT2 of the second average temperature is not only relatively small, but also the number of temperature measurement points contained in the corresponding arrangement mode is small, so the second arrangement mode corresponding to the second average temperature is selected as the final arrangement mode of the temperature sensor.

[0105] Next, taking the preset temperature measurement point on the soft connection b phase 231 as the target detection point as an example, the determination method of the preset correction coefficient in the present application is described in detail.

[0106] ​The infrared thermal imager is used to detect the temperature of the soft connection phase b 231, to obtain a third temperature K of the soft connection phase b 231 of 91.2°C, a fourth temperature K1 of the soft connection phase b 231 of 79.7°C is obtained by using the third temperature sensor, a fifth temperature K2 of the soft connection phase b 231 of 67.5°C is obtained by the fourth temperature sensor, and a preset correction coefficient α value of the soft connection phase b 231 of 1.99 is calculated by the formula α=(K+K2) / K1.

[0107] Similarly, the preset correction coefficient α of the preset temperature measurement point on other devices inside the box-type substation can also be obtained, and the specific data is shown in Table 2 below:

[0108] Table 2

[0109]

[0110] As can be seen from Table 2, the preset correction coefficient α of the preset temperature measurement point on each device in the box-type substation ranges from 1.7 to 2.1. The box-type substation also includes other devices in addition to the devices shown in Table 2, and the temperatures of these devices are relatively low, and the preset correction coefficient α can be selected in the range of 1.7-2.1, for example, the preset correction coefficient α can be 2. It should be noted that when correcting the measured temperature of the target temperature measurement area, the corresponding preset correction coefficient can be selected according to the different target temperature measurement areas, which can further improve the accuracy of the measured temperature.

[0111] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0112] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A method for arranging temperature measuring points of a new energy box-type substation, characterized in that, The method comprises the following steps: detecting a target temperature measuring area and a corresponding reference temperature value of a to-be-measured object by using an infrared thermal imager; determining an arrangement mode of temperature measuring points in the target temperature measuring area; detecting the temperature measuring points by using temperature sensors based on different arrangement modes to obtain at least three average temperature values of the target temperature measuring area; determining a final arrangement mode of the temperature sensors according to the at least three average temperature values and the reference temperature value; the step of detecting the temperature measuring points by using temperature sensors based on different arrangement modes to obtain at least three average temperature values of the target temperature measuring area comprises the following steps: arranging a temperature sensor at each temperature measuring point according to each arrangement mode and detecting an average temperature value of the target temperature measuring area; detecting at least three average temperature values based on at least three different arrangement modes; the step of arranging a temperature sensor at each temperature measuring point according to each arrangement mode and detecting an average temperature value of the target temperature measuring area comprises the following steps: arranging at least one temperature sensor at each temperature measuring point according to each arrangement mode; detecting the temperature measuring points by using the temperature sensors to obtain a measured temperature of the temperature measuring point; calculating an average temperature value corresponding to the arrangement mode based on the measured temperature; each temperature measuring point is arranged with two temperature sensors, one of which is a first temperature sensor and the other of which is a second temperature sensor; the step of arranging at least one temperature sensor at each temperature measuring point comprises the following steps: arranging the first temperature sensor and the second temperature sensor at the temperature measuring point and making the first temperature sensor contact the to-be-measured object, and a gap is formed between the second temperature sensor and the to-be-measured object.

2. The arrangement method according to claim 1, characterized in that, the step of detecting the temperature measuring points by using the temperature sensors to obtain a measured temperature of the corresponding temperature measuring point comprises the following steps: detecting a first temperature by using the first temperature sensor and detecting a second temperature by using the second temperature sensor; calculating the measured temperature based on the first temperature and the second temperature.

3. The arrangement method according to claim 2, characterized in that, the step of calculating the measured temperature based on the first temperature and the second temperature comprises the following steps: determining a preset correction coefficient; calculating the measured temperature based on the first temperature, the second temperature and the preset correction coefficient.

4. The arrangement method according to claim 3, characterized in that, the step of calculating the measured temperature based on the first temperature, the second temperature and the preset correction coefficient comprises the following steps: calculating the measured temperature based on the formula T=αT1-T2; wherein, α is the preset correction coefficient, T1 is the first temperature, T2 is the second temperature, and T is the measured temperature.

5. The arrangement method according to claim 3, characterized in that, the step of determining a preset correction coefficient comprises the following steps: selecting a target temperature measuring point on the to-be-measured object; detecting the target temperature measuring point by using an infrared thermal imager to obtain a third temperature; arranging a third temperature sensor and a fourth temperature sensor at the target temperature measurement point, the third temperature sensor being in contact with the object to be measured, and the fourth temperature sensor being spaced apart from the object to be measured; detecting a fourth temperature by using the third temperature sensor, and detecting a fifth temperature by using the fourth temperature sensor; determining the preset correction coefficient based on the third temperature, the fourth temperature and the fifth temperature.

6. The arrangement method according to claim 5, characterized in that, The determination of the preset correction coefficient based on the third temperature, the fourth temperature and the fifth temperature comprises: calculating the preset correction coefficient based on the formula α=(K+K2) / K1; wherein α represents the preset correction coefficient, K represents the third temperature, K1 represents the fourth temperature, and K2 represents the fifth temperature.

7. The method of arranging according to any of claims 1-6, characterized in that, The determination of the final arrangement of the temperature sensor based on the at least three average temperature values and the reference temperature value comprises: determining the difference between each of the average temperature values and the reference temperature value; determining the final arrangement based on the difference and the number of temperature measurement points included in the arrangement.

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