Real-time monitoring system for operation of main transformer of transformer substation
By setting monitoring points and laser ranging modules at the wave wings of the main transformer oil tank of the substation, the deformation of the wave wings is monitored in real time, which solves the problem of the transformer oil level reduction caused by the inability to expand and contract normally, and improves the stability of the equipment operation.
Patent Information
- Application Number
- CN202411426886.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-14
- Publication Date
- 2025-02-28
AI Technical Summary
The wings of the main transformer oil tank of the existing substation cannot expand and contract normally due to temperature changes, resulting in a decrease in the transformer oil level and affecting the stable operation of the equipment.
A real-time monitoring system for the main transformer of the substation is designed. By setting up multiple monitoring points at the wave wings, using laser ranging modules and monitoring reflectors, the deformation of the wave wings is monitored in real time and abnormal deformation is discovered in a timely manner.
It realizes rapid detection of wave wing deformation, avoids the problems of reduced oil level of the transformer and unstable equipment, and improves the stability of main transformer operation.
Smart Images
Figure CN119535477A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of substation main transformer monitoring, and in particular relates to a real-time monitoring system for the operation of a substation main transformer. Background Art
[0002] Substations are important power distribution facilities in power systems. They are responsible for converting the electric energy on high-voltage transmission lines into lower voltage through transformers and then distributing it to various power consumption points. Among them, the main transformer (referred to as main transformer) is the main step-down transformer used for power transmission and transformation. It is the core part of the substation. Its main function is to reduce the high-voltage electric energy entering the station to a suitable voltage to meet the power demand.
[0003] In the prior art, fully sealed transformers have been widely used because their fully sealed structure ensures that transformer oil is completely isolated from air, prolongs the service life of transformer oil and reduces the maintenance workload of transformers. Among them, the oil tank, as one of the key components of the distribution transformer, mainly compensates for the change in transformer oil volume caused by temperature rise and fall through the "breathing" effect of the oil tank corrugated fins, that is, the elastic change of the corrugated fins, thereby alleviating the increase in internal pressure of the transformer.
[0004] However, as the running time increases, there is a situation where the oil tank corrugated fins expand due to the increase in temperature, but cannot shrink normally after the transformer oil temperature drops. After long-term operation, the transformer oil level decreases, and the exposed conductor discharges to the transformer shell, affecting the stable operation of the equipment.
[0005] Therefore, in order to solve the above problems, it is necessary to develop a real-time monitoring system for the main transformer operation of the substation. Summary of the invention
[0006] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a real-time monitoring system for the operation of a main transformer in a substation, which can monitor the corrugated fins of the main transformer oil tank in real time, quickly detect abnormal deformation, and avoid affecting the operating stability of the main transformer.
[0007] The object of the present invention is achieved as follows: A real-time monitoring system for the operation of a main transformer in a substation comprises a corrugated oil tank and a tank cover, wherein the top of the corrugated oil tank is provided with a tank cover, the tank cover is provided with high-voltage wiring terminals and low-voltage wiring terminals, the side wall of the corrugated oil tank is provided with a plurality of corrugated fins parallel to each other, and a monitoring mechanism for monitoring the deformation of the corrugated fins; Wherein, the monitoring mechanism includes a mounting plate and a safety reflector plate which are fixedly arranged on the side wall of the corrugated oil tank and are respectively located above and below the wave fins; a support plate is fixedly arranged at the bottom end of the mounting plate, and the support plate extends vertically downward to the interval space between two adjacent wave fins; a plurality of through holes are opened on the support plate, and a lightweight guide rod is horizontally arranged through the through holes; a monitoring contact is fixedly connected to one end of the lightweight guide rod close to the wave fin; a telescopic spring is arranged between the monitoring contact and the support plate, and the telescopic spring is sleeved on the lightweight guide rod; the monitoring contact is abutted and connected with the surface of the wave fin; a monitoring reflector plate is arranged at the other end of the lightweight guide rod; A laser ranging module corresponding to the monitoring reflector is arranged at the bottom end of the upper mounting plate, and the laser ranging module emits a ranging laser downward to the interval space between two adjacent wave wings. The ranging laser emitted by the laser ranging module and the monitoring reflector are in the same vertical plane, and the vertical plane is perpendicular to the wave wings. The route of the ranging laser in the interval space is the laser zone, and both sides of the laser zone are safety zones; When the wave wing surface is flat and not expanded, the monitoring reflector is located in a safe area and does not contact the ranging laser emitted by the laser ranging module. After the wave wing surface expands outward, it pushes the monitoring contact, the light guide rod and the monitoring reflector to move toward the laser area and reflect the laser. The mounting plate is also provided with a control mechanism, and the control mechanism electrically controls the connection monitoring mechanism.
[0008] Furthermore, a driving power supply is also provided on the mounting plate, and the driving power supply is electrically connected to the control mechanism and the monitoring mechanism.
[0009] Furthermore, the control mechanism includes a main processor unit, a timing unit, a data receiving unit, a data storage unit, a wireless communication unit and an alarm unit.
[0010] Furthermore, the main processor unit is connected to the monitoring mechanism through the timing unit, which is used to start the laser ranging module for monitoring at a fixed time, and receives the ranging data of the laser ranging module through the data receiving unit, analyzes and processes the ranging data, stores the data through the data storage unit, and connects to the background through the wireless communication unit for data transmission. When the wave wing is deformed after analyzing and processing the ranging data, an alarm is issued through the alarm unit.
[0011] Furthermore, the place where the monitoring contact abuts against the surface of the wave fin is the monitoring point, and there are multiple monitoring points.
[0012] Furthermore, the monitoring points on both sides of each wave fin are set to 4-8 respectively, which are located near the edge of the wave fin and are evenly distributed in a circle or square around the center of the side of the wave fin.
[0013] Furthermore, the mounting plate and the safety reflector plate are detachably fixedly connected to the corrugated oil tank via bolts and nuts respectively.
[0014] Due to the adoption of the above-mentioned technical scheme, the beneficial effects of the present invention are as follows: by setting a plurality of monitoring points at the wave wing, monitoring contacts and monitoring reflective plates are set at the monitoring points, and emitting a detection laser through a laser ranging module, when the surface of the wave wing is flat and not expanded, the ranging laser emitted by the laser ranging module is directly emitted downward to the safety reflective plate and reflected, and the ranging laser does not contact the monitoring reflective plate. At this time, the distance measured by the laser ranging module is the distance of the bottom safety reflective plate. When the surface of the wave wing expands outward, the monitoring contacts, lightweight guide rods and monitoring reflective plates are pushed to move toward the laser area and reflect the laser. At this time, the distance measured by the laser ranging module is the distance of the current monitoring reflective plate, so that abnormal deformation of the wave wing can be quickly discovered, abnormal conditions can be dealt with in a timely manner, operation and maintenance management can be performed, and the operation stability of the main transformer can be effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a structural schematic diagram of the present invention.
[0016] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure of part A.
[0017] Figure 3 yes Figure 2 The enlarged structural diagram of part B is shown in the figure.
[0018] Figure 4 It is a schematic diagram of the structure of a monitoring contact embodiment of the present invention.
[0019] Figure 5 It is a principle block diagram of the present invention.
[0020] In the figure: 1, corrugated oil tank 2, tank cover 3, high voltage terminal 4, low voltage terminal 5, corrugated fin 6, monitoring mechanism 7, control mechanism; 51. Interval space; 61, mounting plate 62, safety reflector plate 63, support plate 64, through hole 65, lightweight guide rod 66, monitoring contact 67, telescopic spring 68, monitoring reflector plate 69, laser ranging module; 71, main processor unit 72, timing unit 73, data receiving unit 74, data storage unit 75, wireless communication unit 76, alarm unit; a. Laser area b. Safety area DETAILED DESCRIPTION
[0021] The technical solution of the present invention is further specifically described below through embodiments and in conjunction with the accompanying drawings.
[0022] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, a real-time monitoring system for the operation of a main transformer in a substation includes a corrugated oil tank 1 and a tank cover 2. The top of the corrugated oil tank 1 is provided with a tank cover 2, and a high-voltage terminal 3 and a low-voltage terminal 4 are provided on the tank cover 2. A plurality of corrugated fins 5 parallel to each other are provided on the side wall of the corrugated oil tank 1, as well as a monitoring mechanism 6 for monitoring the deformation of the corrugated fins 5.
[0023] The monitoring mechanism 6 includes a mounting plate 61 and a safety reflector plate 62 fixedly arranged on the side wall of the corrugated oil tank 1 and respectively located above and below the wave fins 5. Preferably, the mounting plate 61 and the safety reflector plate 62 are respectively detachably fixedly connected to the corrugated oil tank 1 by bolts and nuts, so as to facilitate installation, disassembly, replacement and maintenance. A support plate 63 is fixedly arranged at the bottom end of the mounting plate 61, and the support plate 63 extends vertically downward to the interval space 51 between two adjacent wave fins 5. A plurality of through holes 64 are opened on the support plate 63, and a lightweight guide rod 65 is horizontally penetrated in the through hole 64. The lightweight guide rod 65 is close to A monitoring contact 66 is fixedly connected to one end of the wave wing 5, and a telescopic spring 67 is arranged between the monitoring contact 66 and the support plate 63. The telescopic spring 67 is sleeved on a lightweight guide rod 65, and the monitoring contact 66 is abutted against the surface of the wave wing 5. A monitoring reflector plate 68 is arranged at the other end of the lightweight guide rod 65; specifically, the abutment connection point between the monitoring contact 66 and the surface of the wave wing 5 is the monitoring point, and a plurality of monitoring points are provided; preferably, the monitoring points on both sides of each wave wing 5 are respectively set to 4-8, which are respectively located near the edge of the wave wing 5 and are evenly distributed in a circular or square shape around the center position of the side of the wave wing 5.
[0024] A laser ranging module 69 corresponding to the monitoring reflector plate 68 is provided at the bottom end of the upper mounting plate 61. The laser ranging module 69 emits a ranging laser downward into the interval space 51 between two adjacent wave wings 5. The ranging laser emitted by the laser ranging module 69 and the monitoring reflector plate 68 are in the same vertical plane, and the vertical plane is perpendicular to the wave wing 5.
[0025] The route of the distance measuring laser in the interval space 51 is the laser zone a, and the two sides of the laser zone a are safety zones b. Figure 4As shown in (1), when the surface of the wave wing 5 is flat and not expanded, the monitoring reflector 68 is located in the safety zone b and does not contact the ranging laser emitted by the laser ranging module 69. At this time, the ranging laser emitted by the laser ranging module 69 is directly emitted downward to the safety reflector 62 and is reflected. At this time, the distance measured by the laser ranging module 69 is the distance of the bottom safety reflector 62, indicating that the wave wing 5 is in a normal state; Figure 4 As shown in (2), when the surface of the wave wing 5 expands outward, it pushes the monitoring contact 66, the lightweight guide rod 65 and the monitoring reflector 68 to move toward the laser area a and reflect the laser. At this time, the distance measured by the laser ranging module 69 is the distance of the current monitoring reflector 68, which can quickly detect abnormal deformation of the wave wing 5 and deal with the abnormal situation in time.
[0026] Among them, a control mechanism 7 is also arranged on the mounting plate 61, and the control mechanism 7 electrically controls the connection monitoring mechanism 6. A driving power supply is also arranged on the mounting plate 61, and the driving power supply electrically connects the control mechanism 7 and the monitoring mechanism 6; specifically, the control mechanism 7 includes a main processor unit 71, a timing unit 72, a data receiving unit 73, a data storage unit 74, a wireless communication unit 75 and an alarm unit 76; the main processor unit 71 is connected to the monitoring mechanism 6 through the timing unit 72, and is used to start the laser ranging module 69 for monitoring at a fixed time, and receives the ranging data of the laser ranging module 69 through the data receiving unit 73, analyzes and processes the ranging data, stores the data through the data storage unit 74, and connects to the background through the wireless communication unit 75 for data transmission, and when it is found that the wave wing 5 is deformed after analyzing and processing the ranging data, an alarm is issued through the alarm unit 76.
[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the specific implementation modes of the present invention can still be modified or replaced by equivalents, and any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.
Claims
1. A real-time monitoring system for main transformer operation of a substation, characterized by: The invention comprises a corrugated oil tank (1) and a tank cover (2), wherein the top of the corrugated oil tank (1) is provided with the tank cover (2), the tank cover (2) is provided with a high-voltage terminal (3) and a low-voltage terminal (4), and the side wall of the corrugated oil tank (1) is provided with a plurality of corrugated fins (5) parallel to each other, and a monitoring mechanism (6) for monitoring the deformation of the corrugated fins (5); The monitoring mechanism (6) comprises a mounting plate (61) and a safety reflector plate (62) fixedly arranged on the side wall of the corrugated oil tank (1) and respectively located above and below the corrugated fins (5); a support plate (63) is fixedly arranged at the bottom end of the mounting plate (61); the support plate (63) vertically extends downward to the interval space (51) between two adjacent corrugated fins (5); a plurality of through holes (64) are formed on the support plate (63); a lightweight guide rod (65) is horizontally penetrated in the through hole (64); a monitoring contact (66) is fixedly connected to one end of the lightweight guide rod (65) close to the corrugated fin (5); the monitoring contact (66) and the support plate (63) are connected to each other. A telescopic spring (67) is arranged between the two wave wings (5), the telescopic spring (67) is sleeved on the light guide rod (65), the monitoring contact (66) is abutted against the surface of the wave wing (5), the other end of the light guide rod (65) is provided with a monitoring reflector (68), the bottom end of the upper mounting plate (61) is provided with a laser ranging module (69) corresponding to the monitoring reflector (68), the laser ranging module (69) emits a ranging laser downward into the interval (51) between two adjacent wave wings (5), the ranging laser emitted by the laser ranging module (69) and the monitoring reflector (68) are in the same vertical plane, and the vertical plane is perpendicular to the wave wing (5); The route of the distance measuring laser in the interval space (51) is the laser zone (a), and both sides of the laser zone (a) are safety zones (b). When the surface of the wave wing (5) is flat and not expanded, the monitoring reflector (68) is located in the safety zone (b) and does not contact the distance measuring laser emitted by the laser distance measuring module (69). After the surface of the wave wing (5) expands outward, it pushes the monitoring contact (66), the light guide rod (65) and the monitoring reflector (68) to move toward the laser zone (a) and reflect the laser. A control mechanism (7) is also provided on the mounting plate (61), and the control mechanism (7) electrically controls the connection monitoring mechanism (6).
2. A real-time monitoring system for main transformer operation of a substation according to claim 1, characterized in that: A driving power source is also provided on the mounting plate (61), and the driving power source is electrically connected to the control mechanism (7) and the monitoring mechanism (6).
3. A real-time monitoring system for main transformer operation of a substation according to claim 1, characterized in that: The control mechanism (7) comprises a main processor unit (71), a timing unit (72), a data receiving unit (73), a data storage unit (74), a wireless communication unit (75) and an alarm unit (76).
4. A real-time monitoring system for main transformer operation of a substation according to claim 2, characterized in that: The main processor unit (71) is connected to the monitoring mechanism (6) via the timing unit (72) and is used to start the laser ranging module (69) for monitoring at a fixed time, and receives ranging data from the laser ranging module (69) via the data receiving unit (73), analyzes and processes the ranging data, stores the data via the data storage unit (74), and connects to the background via the wireless communication unit (75) for data transmission. When deformation of the wave wing (5) is detected after analyzing and processing the ranging data, an alarm is issued via the alarm unit (76).
5. A real-time monitoring system for main transformer operation of a substation according to claim 1, characterized in that: The point where the monitoring contact (66) abuts against the surface of the wave fin (5) is the monitoring point, and a plurality of monitoring points are provided.
6. A real-time monitoring system for main transformer operation of a substation according to claim 5, characterized in that: The number of monitoring points on both sides of each wave fin (5) is respectively set to 4-8, and are respectively located near the edge of the wave fin (5) and are evenly distributed in a circle or square around the center of the side of the wave fin (5).
7. A real-time monitoring system for main transformer operation of a substation according to claim 1, characterized in that: The mounting plate (61) and the safety reflection plate (62) are respectively detachably fixedly connected to the corrugated oil tank (1) by means of bolts and nuts.