Series GIS equipment foundation settlement monitoring system based on laser ranging method

Abstract

The embodiment of the invention provides a series GIS equipment foundation settlement monitoring system based on a laser ranging method.The series GIS equipment comprises a plurality of buttresses, the series GIS equipment foundation settlement monitoring system comprises a plurality of measuring units, and each measuring unit comprises two arm rods, a plurality of connecting rods and a plurality of connecting rods, each measuring unit is arranged between two adjacent buttresses, so that the tail ends of the two arm levers are positioned right above the two adjacent buttresses; the laser displacement meters are arranged at the tail ends of the arm levers to measure the distances from the arm levers to the corresponding buttresses in the vertical direction and send the measured values to the corresponding measuring units; the data receiving and processing module is used for receiving relative settlement of the adjacent buttresses of each measuring unit and calculating relative settlement and absolute settlement of all the buttresses relative to the reference buttress; wherein the relative settlement of the adjacent buttresses is obtained based on measured values of the laser displacement meters on the two sides of each measuring unit. Therefore, effective and accurate GIS equipment foundation settlement monitoring is realized.

Description

Technical Field

[0001] The present application relates to the fields of structural testing technology and power equipment monitoring technology, and in particular to a GIS equipment foundation settlement monitoring system based on laser ranging method. Background Art

[0002] With the widespread use of Gas Insulated Switchgear (GIS) in substations, its safety and functional maintenance have gradually received attention. In areas with poor geological conditions or prone to natural disasters, the foundation of the equipment may undergo partial or overall settlement, which may cause abnormal stress or failure of the equipment. Therefore, the impact of foundation settlement on the safety of the equipment is particularly important. GIS equipment is generally composed of multiple groups of components connected in series, each of which has its own separate foundation. The overall GIS equipment has the characteristics of occupying an ultra-long strip distribution, or the entire GIS equipment group is composed of multiple independent GIS devices. In the settlement monitoring of the GIS equipment foundation, the monitoring of the relative settlement difference of the independent foundation of each component (or a single GIS device) is more important than the monitoring of the absolute settlement of the entire GIS equipment.

[0003] At present, the commonly used settlement measurement method is generally to use level, total station and other equipment for regular manual observation, which is not only labor-intensive, but also has low accuracy and efficiency, and is difficult to meet the needs of real-time monitoring. Therefore, a more effective and accurate GIS equipment foundation settlement monitoring method is needed. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present application provides a series GIS equipment foundation settlement monitoring system based on laser ranging method, which solves the problem in the prior art of lack of effective and accurate monitoring of the foundation settlement of each part of the GIS equipment (or a single GIS device).

[0005] According to an embodiment of the present application, a foundation settlement monitoring system for serial GIS equipment based on laser ranging method is provided, wherein the serial GIS equipment includes multiple piers, and the foundation settlement monitoring system for serial GIS equipment includes: multiple measuring units, each measuring unit includes: two arms, and each measuring unit is arranged between two adjacent piers so that the ends of the two arms are located directly above the two adjacent piers; a laser displacement meter, arranged at the end of each arm, to measure the distance from the arm to the corresponding pier in the vertical direction, and send the measurement value to the corresponding measuring unit; a data receiving and processing module, receiving the relative settlement of adjacent piers of each measuring unit and calculating the relative settlement and absolute settlement of all piers relative to the reference pier; wherein the relative settlement of adjacent piers is obtained based on the measurement values ​​of the laser displacement meters on both sides of each measuring unit.

[0006] According to an embodiment of the present application, the arm is telescopic.

[0007] According to an embodiment of the present application, the arm is telescopic in 5 layers, each layer is 0.8 to 1 mm thick, each layer is 0.9 to 1 meter long, and the total telescopic range of the 5 layers is 1 to 5 meters.

[0008] According to an embodiment of the present application, when the distance between adjacent buttresses is greater than 10 meters, simulated buttresses are arranged between the adjacent buttresses.

[0009] According to an embodiment of the present application, the arm is a carbon fiber arm, and the carbon fiber arm has the following characteristics: density, 1.75-1.93 g / cm 3 ; Tensile strength, 3500~7000MPa; Tensile modulus, 230~800GPa; Elongation at break, 1.5%~2.0%; Thermal conductivity, 5~10W / (m·K); Electrical conductivity: 102~103S / m.

[0010] According to an embodiment of the present application, the measuring unit also includes: a level (6-1), a central rotating shaft (6-2), a metal protective shell (6-3), a connecting rod bearing (6-4), a retractable signal line (6-6), a retractable power line (6-7), a metal support rod (6-9), a wireless signal transmission module (6-10), a data acquisition and storage module (6-11), a battery module (6-12), a bolt hole for connecting the base (6-13), a signal line and a power line external connection hole (6-14), a base (6-15), and a gasket (6-16) installed at the point to be measured.

[0011] According to an embodiment of the present application, the retractable signal line (6-6) and the retractable power line (6-7) are spiral conductors.

[0012] According to an embodiment of the present application, the foundation settlement monitoring system for serial GIS equipment based on laser ranging method also includes: a server, used to receive the relative settlement and absolute settlement of all piers relative to the reference pier obtained by the data receiving and processing module; an intelligent terminal, used to obtain the relative settlement and absolute settlement of all piers relative to the reference pier from the server, and provide a display interface.

[0013] According to an embodiment of the present application, the relative settlement of any buttress relative to the reference buttress is calculated as:

[0014] Z j+2 =C i+1,j+2 -C i+1,j+1 +Z j+1 ,

[0015] Z j+1 =C i,j+1 -C i,j,

[0016] Wherein, j represents any measurement unit, which is numbered from 1 starting from the measurement unit adjacent to the reference buttress, i represents any laser displacement meter, which is numbered from 1 starting from the laser displacement meter corresponding to the reference buttress, C i,j represents the measured value of the ith laser displacement meter of the jth measuring unit, with reference to the relative settlement Z of the buttress j＝1 =0, Z j+1 , Z j+2 They represent the relative settlement of the j+1th pier and the j+2th pier respectively.

[0017] According to an embodiment of the present application, the absolute settlement of any pier is calculated as:

[0018] S j+1 =Z j+1 +S j ,

[0019] Among them, S j and S j+1 denote the absolute settlement of the jth buttress and the j+1th buttress respectively, S j＝1 is the elevation of the reference buttress.

[0020] The technical principle of the present application is: by setting a measuring unit with a laser displacement meter between two adjacent piers, the relative settlement of the two adjacent piers can be monitored; and by combining the relative settlement of all piers and the reference pier, the relative settlement and absolute settlement of all piers can be obtained.

[0021] Compared with the prior art, the present application has the following beneficial effects: by adopting the above-mentioned measuring unit, the relative settlement of each component of the serial GIS equipment can be monitored in real time, and the measurement is more efficient, accurate and convenient, thereby better predicting the possible abnormal stress or failure of the GIS equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a diagram showing the arrangement and numbering of piers and multiple measuring units in the GIS equipment foundation settlement monitoring system in an embodiment of the present application.

[0023] Figure 2 This is a front view of the arrangement of a measurement unit between two adjacent GIS devices according to an embodiment of the present application.

[0024] Figure 3 This is a three-dimensional diagram of arranging a measurement unit between two adjacent GIS devices according to an embodiment of the present application.

[0025] Figure 4 It is a schematic diagram of the multi-layer end of the telescopic rod according to an embodiment of the present application.

[0026] Figure 5 This is a three-dimensional projection diagram of the positions of various components of the measurement unit according to an embodiment of the present application.

[0027] Figure 6 It is a front view of the measuring unit according to an embodiment of the present application.

[0028] Figure 7 It is a side view of the measuring unit according to an embodiment of the present application.

[0029] Figure 8 FIG. 4 is a top view of a measuring unit according to an embodiment of the present application.

[0030] Fig. 9 This is a schematic diagram of a foundation settlement monitoring system according to an embodiment of the present application. DETAILED DESCRIPTION

[0031] The technical solution in this application is further described below in conjunction with the accompanying drawings and embodiments.

[0032] As described in the background technology, the existing technology lacks the problem of effectively and accurately monitoring the foundation settlement of each part of the GIS equipment. Figure 1 As shown, according to one embodiment of the present application, a foundation settlement monitoring system for serial GIS equipment based on laser ranging method is provided, wherein the serial GIS equipment includes a plurality of (7, but can be any number) piers, including: a plurality of measuring units (No. 1 to No. 6 measuring instruments), each measuring unit including: two arms, and each measuring unit is arranged between two adjacent piers so that the ends of the two arms are located directly above the two adjacent piers; a laser displacement meter, arranged at the end of each arm, to measure the distance from the arm to the corresponding pier in the vertical direction, and send the measurement value to the corresponding measuring unit; a data receiving and processing module (not shown), receiving the relative settlement of the adjacent piers of each measuring unit and calculating the relative settlement and absolute settlement of all piers relative to the reference pier; wherein the relative settlement of the adjacent piers is obtained based on the measurement values ​​of the laser displacement meters on both sides of each measuring unit. In addition, Figure 2 (main view) and Figure 3 (Stereoscopic diagram) Also shown is a diagram of the arrangement of two piers and the corresponding GIS equipment 7 and a measuring unit 6. In addition, an outer angle steel 8 is also shown for fixing the piers. By setting a measuring unit with a laser displacement meter between two adjacent piers, the relative settlement of the two adjacent piers can be monitored; combined with the relative settlement of all piers and the reference pier, the relative settlement and absolute settlement of all piers can be obtained. By adopting the above-mentioned measuring unit, the relative settlement of each component of the serial GIS equipment can be monitored in real time, and the measurement is more efficient, accurate and convenient, so as to better predict the abnormal stress or failure of the GIS equipment.

[0033] In addition, the settlement change of the GIS foundation is measured based on the principle of laser ranging. Compared with the traditional measurement method based on static level, laser ranging has higher accuracy (0.1~1μm) when measuring short distances, while the accuracy of static level is only 0.01~0.05mm.

[0034] In order to make the foundation settlement monitoring system adapt to the measurement of more types of serial GIS equipment, such as Figure 4 As shown, according to an embodiment of the present application, the arm is telescopic. In addition, the arm is telescopic in 5 layers, each layer is 0.8 to 1 mm thick, each layer is 0.9 to 1 m long, and the total telescopic range of the 5 layers is 1 to 5 m. Therefore, when the distance between adjacent piers is greater than 10 m, a simulated pier is set between the adjacent piers.

[0035] In addition, in order to meet the requirements of the foundation settlement monitoring system to adapt to various measurement situations, according to an embodiment of the present application, the arm is a carbon fiber arm, and the carbon fiber arm has the following characteristics: density, 1.75-1.93 g / cm 3 ; Tensile strength, 3500-7000MPa; Tensile modulus, 230-800GPa; Elongation at break, 1.5%-2.0%; Thermal conductivity, 5-10W / (m·K); Electrical conductivity: 102-103S / m. Carbon fiber material is a high-performance fiber material composed of carbon elements, with the characteristics of light weight, high strength, and high modulus. Since it is an inorganic non-metallic material, it also has good rust and corrosion resistance; compared with the traditional static level, it avoids the laying of longer water pipes and the strict airtightness requirements of the equipment, significantly reducing the manufacturing process requirements and costs of the equipment.

[0036] According to the embodiments of the present application, Figure 5 (stereoscopic image), Figure 6 , Figure 7 and Figure 8 As shown, the measuring unit also includes: a level (6-1), a central shaft (6-2), a metal protective shell (6-3), a connecting rod bearing (6-4), a retractable signal line (6-6), a retractable power line (6-7), a metal support rod (6-9), a wireless signal transmission module (6-10), a data acquisition and storage module (6-11), a battery module (6-12), a bolt hole for connecting the base (6-13), a signal line and a power line external connection hole (6-14), a base (6-15), and a gasket (6-16) installed at the point to be measured. Among them, 6-5 indicates the arm, and 6-8 indicates a laser displacement meter. As Figure 5As shown, the retractable signal line (6-6) and the retractable power line (6-7) are spiral wires. Since the measuring unit has the function of wireless transmission (wireless signal transmission module 6-10), when the signal line is damaged and disconnected, the wireless transmission module can still be used to achieve uninterrupted transmission of settlement data.

[0037] In addition, in order to obtain monitoring results more conveniently, such as Fig. 9 As shown, according to an embodiment of the present application, the said serial GIS equipment foundation settlement monitoring system based on laser ranging method also includes: a server (or network server 3) at the cloud level, which is used to receive the relative settlement and absolute settlement of all piers relative to the reference pier obtained by the said data receiving and processing module (or data processing system 4); an intelligent terminal (mobile device 1 or PC device 2), which is used to obtain the relative settlement and absolute settlement of all piers relative to the reference pier from the said server, and provide a display interface. Among them, the measuring instrument group 6 is the said multiple measuring units. In addition, a DC power supply system 5 for supplying power to the measuring instrument group 6 and the data processing system 4 is also shown. Generally, the function of the DC power supply system is to provide continuous power supply to the measuring instrument group and the data processing system around the clock. The basic principle is that when the power grid is normally connected, the power grid directly supplies power to the measuring instrument group and the data processing system and stores power for the batteries of each instrument. When the connection with the power grid is interrupted, the batteries of each instrument are temporarily powered. When the interruption time is long, the DC power supply system will start the diesel generator to power the entire system, so as to realize 24-hour power supply for the monitoring system.

[0038] According to an embodiment of the present application, the relative settlement of any buttress relative to the reference buttress is calculated as:

[0039] Z j+2 =C i+1,j+2 -C i+1,j+1 +Z j+1 ,

[0040] Z j+1 =C i,j+1 -C i,j ,

[0041] Wherein, j represents any measurement unit, which is numbered from 1 starting from the measurement unit adjacent to the reference buttress, i represents any laser displacement meter, which is numbered from 1 starting from the laser displacement meter corresponding to the reference buttress, C i,j represents the measured value of the ith laser displacement meter of the jth measuring unit, with reference to the relative settlement Z of the buttress j＝1 =0, Z j+1 , Z j+2 They represent the relative settlement of the j+1th pier and the j+2th pier respectively.

[0042] According to an embodiment of the present application, the absolute settlement of any pier is calculated as:

[0043] S j+1 =Z j+1 +S j ,

[0044] Among them, S j and S j+1 denote the absolute settlement of the jth buttress and the j+1th buttress respectively, S j＝1 is the elevation of the reference buttress.

[0045] According to an embodiment of the present application, the installation example process of the tandem GIS equipment foundation settlement monitoring system based on laser ranging method is as follows.

[0046] Assume that the GIS equipment of the substation is distributed in a "one" shape along the east-west direction, with a total of 6 piers. The distance between the central axis of the piers is 6m and 12m. In the case of 12m between the piers, a transfer simulation pier needs to be set up between the two piers. The settlement monitoring equipment is required to be arranged underground, and no obstacles are added to the surface due to the arrangement of the monitoring equipment. Then arrange the measuring instrument group, connect the DC power supply system and the data processing system to complete the monitoring of the foundation settlement of the substation GIS equipment. The whole process includes the following steps:

[0047] Step 1: Dig a trench with a depth of 700-1000mm and a width of 500-900mm close to the side of the pier where the GIS equipment group is distributed in a "I" shape. First, hollow masonry is used inside the trench, and then cement mortar is used for leveling. After leveling, the trench is 700mm deep and 500mm wide, and the upper cover is covered with tempered glass. The trench is used to arrange and install monitoring equipment;

[0048] Step 2: Use one side of the angle steel to fix it on the side of the independent pier of each GIS equipment to ensure that the angle steel and the pier settle together. Install a gasket on the other side, and fix the gasket to the angle steel with three M10 bolts. Set up a transfer simulation pier between piers with a span of 12m and install the gasket. The function of the transfer simulation pier is to transmit the settlement displacement coordinates, and its own settlement does not affect the transmission function. Number each pier (including the transfer pier) from west to east;

[0049] Step 3: Place a measuring instrument between every two adjacent piers (including the transfer pier) to form a measuring instrument group. The placement position should be the midpoint of the two adjacent piers as much as possible, and observe the level gauge on the top of the measuring instrument to make it level and stable. Figure 5 As shown, the corresponding front view is shown in Figure 6 Each measuring instrument is numbered from west to east. The layout and numbering diagram of the pier and measuring instrument group is shown in Figure 1 As shown;

[0050] Step 4: Stretch the arm rods on both sides of the measuring instrument. The wall rods on both sides can be rotated up to 60 degrees around the central axis of the measuring instrument, so that the laser displacement meters on both sides are placed directly above the pier gasket;

[0051] Step 5: Connect the power cord and signal cord to each measuring instrument, connect it to the data processing system, and connect it to the DC power supply system;

[0052] Step 6: After the arrangement and installation of the measuring instrument group, data processing system and DC power supply system are completed, the vertical displacement change C of the pier measured by each measuring instrument is continuously collected over time. i,j , C i,j It indicates the displacement change of the jth pier measured by the i-th measuring instrument. The collection time interval can be set in the range of 0.01 to 1000s.

[0053] Step 7: The relative settlement of the pier is represented by Z, and a certain pier j (the first pier) is taken as a reference, that is, Z j＝1 =0.

[0054] Step 8: Based on the reference buttress, calculate the relative settlement Z of all other buttresses.

[0055] Step 9: By regularly measuring the elevation of the reference pier to the geoid, the absolute settlement S of the reference pier is obtained. j , the absolute settlement S of all other piers can be calculated.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application and are not intended to limit it. Although the present application has been described in detail with reference to the preferred embodiments, a person of ordinary skill in the art should understand that the technical solution of the present application can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present application, which should be included in the scope of the claims of the present application.

Claims

1. A tandem GIS equipment foundation settlement monitoring system based on laser ranging method, wherein: The tandem GIS equipment includes a plurality of buttresses, and is characterized in that the tandem GIS equipment foundation settlement monitoring system includes: Multiple measurement units, each measurement unit includes: Two arms, and each measuring unit is arranged between two adjacent piers so that the ends of the two arms are located directly above the two adjacent piers; A laser displacement meter is arranged at the end of each arm to measure the distance from the arm to the corresponding pier in the vertical direction and send the measured value to the corresponding measuring unit; A data receiving and processing module receives the relative settlement of adjacent piers of each measurement unit and calculates the relative settlement and absolute settlement of all piers relative to the reference pier; The relative settlement of adjacent piers is obtained based on the measurement values ​​of the laser displacement meters on both sides of each measuring unit.

2. A tandem GIS equipment foundation settlement monitoring system based on laser ranging method as claimed in claim 1, characterized in that: The arm is telescopic.

3. A tandem GIS equipment foundation settlement monitoring system based on laser ranging method as claimed in claim 2, characterized in that: The arm can be extended and retracted in 5 layers, each layer is 0.8 to 1 mm thick, each layer is 0.9 to 1 m long, and the total extension range of the 5 layers is 1 to 5 m.

4. A laser ranging method-based tandem GIS equipment foundation settlement monitoring system as claimed in claim 3, characterized in that: When the distance between adjacent piers is greater than 10 meters, simulated piers are set between the adjacent piers.

5. The laser ranging method-based tandem GIS equipment foundation settlement monitoring system according to claim 1, characterized in that: The arm is a carbon fiber arm, and the carbon fiber arm has the following characteristics: density, 1.75-1.93g / cm 3 ; Tensile strength, 3500~7000MPa; Tensile modulus, 230~800GPa; Elongation at break, 1.5%~2.0%; Thermal conductivity, 5~10W / (m·K); Electrical conductivity: 102~103S / m.

6. The laser ranging method-based tandem GIS equipment foundation settlement monitoring system according to claim 1, characterized in that: The measuring unit further comprises: a level (6-1), a central rotating shaft (6-2), a metal protective shell (6-3), a connecting rod bearing (6-4), a retractable signal line (6-6), a retractable power line (6-7), a metal support rod (6-9), a wireless signal transmission module (6-10), a data acquisition and storage module (6-11), a battery module (6-12), a bolt hole for connecting the base (6-13), a signal line and a power line external connection hole (6-14), a base (6-15), and a gasket (6-16) installed at the point to be measured.

7. The laser ranging method-based foundation settlement monitoring system for tandem GIS equipment according to claim 1, characterized in that: The retractable signal line (6-6) and the retractable power line (6-7) are spiral conductors.

8. The laser ranging method-based tandem GIS equipment foundation settlement monitoring system according to claim 1, characterized in that: Also includes: A server, used for receiving the relative settlement and absolute settlement of all buttresses relative to the reference buttress obtained by the data receiving and processing module; The intelligent terminal is used to obtain the relative settlement and absolute settlement of all buttresses relative to the reference buttress from the server and provide a display interface.

9. The laser ranging method-based foundation settlement monitoring system for tandem GIS equipment according to claim 1, characterized in that: The relative settlement of any buttress relative to the reference buttress is calculated as: Z j+2 =C i+1,j+2 -C i+1,j+1 +Z j+1 , Z j+1 =C i,j+1 -C i,j , Where, j represents any measurement unit, which is numbered from 1 starting from the measurement unit adjacent to the reference buttress, i represents any laser displacement meter, which is numbered from 1 starting from the laser displacement meter corresponding to the reference buttress, and C i,j represents the measured value of the ith laser displacement meter of the jth measuring unit, with reference to the relative settlement Z of the buttress j＝1 =0, Z j+1 , Z j+2 They represent the relative settlement of the j+1th pier and the j+2th pier respectively.

10. A laser ranging method-based tandem GIS equipment foundation settlement monitoring system as claimed in claim 9, characterized in that: The absolute settlement of any pier is calculated as: S j+1 =Z j+1 +S j , Among them, S j and S j+1 denote the absolute settlement of the jth buttress and the j+1th buttress respectively, S j＝1 is the elevation of the reference buttress.

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