GIS basin-type insulator online detection device

Abstract

The utility model discloses a GIS basin-type insulator on-line detection device. The GIS basin-type insulator on-line detection device comprises a GIS housing and a basin-type insulator arranged in the GIS housing. The GIS basin-type insulator online detection device also comprises an ultrasonic detection module, a central processor, an electromagnetic flux acquisition module, a tightness regulator, a temperature detection module, a display module and a power supply module. Wherein the ultrasonic detection module is installed on the outer wall of the GIS shell, used for sending and receiving ultrasonic signals and electrically connected with the central processing unit, and the central processing unit is used for judging whether the peak value of the ultrasonic signals received and reflected by the ultrasonic detection module exceeds a normal range or not; the electromagnetic flux acquisition module is installed on the outer wall of the GIS housing, is electrically connected with the central processor, and is used for detecting the change of the magnetic flux. According to the utility model, real-time online detection can be carried out on the state of the GIS basin-type insulator so as to quantitatively evaluate the insulation deterioration degree of the GIS basin-type insulator, early faults of the GIS basin-type insulator can be found in time, and the operation stability of GIS equipment is improved.

Description

Technical Field

[0001] The utility model relates to a detection device, in particular to an online detection device for a GIS basin-type insulator. Background Art

[0002] GIS equipment combined electrical appliances are currently widely used in my country's substations. GIS equipment has the advantages of small footprint, little impact from the working environment, and long maintenance cycle, but it also has disadvantages. It is impossible to accurately locate the fault point during maintenance, and the detection technology for internal electrical equipment still has many defects. In recent years, many internal failures of GIS equipment have occurred in the power system, causing serious social and economic losses.

[0003] The internal structure of GIS equipment is mainly insulated by pot-type insulators. The aging of the insulation capacity and insulation level of the pot-type insulators are major factors affecting the life of the entire GIS equipment. Therefore, monitoring the insulation level and aging of the pot-type insulators is extremely important to ensure the safe operation of GIS equipment and the safe and stable operation of the power grid system.

[0004] At present, there are several evaluation methods for the status of GIS internal pot insulators, such as the equipment-to-GIS scoring method and the expert system. The GIS equipment scoring method scores the health status of GIS by collecting statistics on the operation status, fault information, maintenance records and other information of the GIS, and most of the records are made on-site by the staff, so there are relatively large errors. The expert system realizes fault detection by accumulating a large amount of relevant knowledge and expert experience. The expert system has low fault tolerance and low uncertainty data processing capabilities, which leads to many factors in GIS pot insulators. Insulators of different insulating materials will have some differences in the causes of their failures. For example, the leakage current value of GIS pot insulators varies between microamperes and milliamperes for different materials. It is still possible to misjudge based on the experience of experts alone.

[0005] At present, the common detection of GIS pot insulators is carried out through offline equipment or staff detection. Therefore, it is necessary to realize the quantitative evaluation of the insulation degradation degree of GIS pot insulators, timely discover the early faults of GIS pot insulators, and improve the stability of GIS equipment operation with the online detection device of GIS pot insulators. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide an online detection device for a GIS pot-type insulator, which can perform real-time online detection on the state of the GIS pot-type insulator.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0008] A GIS pot-type insulator online detection device comprises a GIS shell and a pot-type insulator arranged in the GIS shell; its distinguishing feature is that the GIS pot-type insulator online detection device also comprises an ultrasonic detection module, a central processing unit, an electromagnetic flux acquisition module, a tension regulator, a temperature detection module, a display module and a power module; wherein the ultrasonic detection module is installed on the outer wall of the GIS shell, used for sending and receiving ultrasonic signals, and is electrically connected to the central processing unit, and the central processing unit is used for judging whether the peak value of the ultrasonic signal reflected back by the ultrasonic detection module exceeds a normal range; the electromagnetic flux acquisition module is installed on the outer wall of the GIS shell, and is electrically connected to the central processing unit, and is used for detecting changes in magnetic flux; the electromagnetic flux acquisition module comprises a coil, and the coil is used for surrounding the outside of the GIS shell, and the tension regulator is arranged at both ends of the coil, and is used for adjusting the tightness of the coil and fixing the coil on the GIS shell; the temperature detection module is installed on the outer wall of the GIS shell, and is electrically connected to the central processing unit, and is used for collecting temperature data of the pot-type insulator and sending the temperature data to the central processing unit; the display module is electrically connected to the central processing unit, and is used for displaying data processed and analyzed by the central processing unit; the power module is used for providing working voltage.

[0009] Furthermore, the ultrasonic detection module includes an HC-SR04 ultrasonic sensor.

[0010] Furthermore, the model of the electromagnetic flux acquisition module is BNWGK-300.

[0011] Furthermore, the tension adjuster includes a base, a winding reel, an adjusting knob and a control button. The base is a columnar structure with an open upper end and a sealed lower end. The side wall of the base is provided with a side hole and a first wire hole, and the first wire hole is used to fix one end of the coil; the winding reel is arranged in the base, and the center position of the bottom of the winding reel is rotatably connected to the center position of the bottom of the base, and the winding reel can rotate with the center of the base as the center of a circle; the side wall of the winding reel is circumferentially provided with a wire groove, and the wire groove is provided with a second wire hole, and the second wire hole is used to fix the other end of the coil; the adjusting knob is arranged above the winding reel, which includes a shell and a motor, the motor is arranged in the shell, the motor shaft extends out of the shell, and is fixedly connected to the middle part of the top end of the winding reel, for driving the winding reel to rotate; the control button and the motor are both electrically connected to the central processing unit, and the control button is used to control the rotation of the motor.

[0012] Furthermore, the temperature detection module includes a plurality of temperature sensors, and the model of the temperature sensors is DS18B20.

[0013] Furthermore, the display module is a display.

[0014] The beneficial effects of the utility model are:

[0015] The utility model provides an online detection device for GIS pot-type insulators. The coil of the electromagnetic flux acquisition module is firstly wrapped around the outside of the GIS shell, and then the coil is fixed on the GIS shell through a tension regulator. When the pot-type insulator inside the GIS is damaged or partially discharged, the change of magnetic flux is firstly detected by the coil of the electromagnetic flux acquisition module, and the detection signal is sent to the central processing unit. The central processing unit sends a control instruction to the ultrasonic detection module according to the detection signal. The ultrasonic detection module sends an ultrasonic wave. When the ultrasonic wave encounters the position where the pot-type insulator inside the GIS is damaged or partially discharged, the ultrasonic detection module sends a feedback signal to the central processing unit after receiving the reflected ultrasonic wave. In the central processing unit, the central processing unit analyzes and determines whether the peak value of the reflected ultrasonic wave exceeds the normal range. When the peak value exceeds the normal range, the central processing unit sends a control instruction to the temperature detection module. The temperature detection module collects the temperatures of multiple areas and sends the collected signals to the central processing unit for comparative analysis of multiple temperature signals. Finally, the central processing unit analyzes the location of the fault point based on the collected information of the ultrasonic detection module and the temperature detection module, and displays it on the display module, thereby realizing real-time online detection of the status of the GIS pot-type insulator, thereby quantitatively evaluating the degree of insulation degradation of the GIS pot-type insulator, timely discovering early faults of the GIS pot-type insulator, and improving the stability of GIS equipment operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a top view of an embodiment of the utility model.

[0017] Figure 2 It is a left view of an embodiment of the utility model.

[0018] Figure 3 It is a right side view of an embodiment of the utility model.

[0019] Figure 4 It is a structural schematic diagram of a tension adjuster according to an embodiment of the utility model.

[0020] Figure 5 It is an exploded view of the tension adjuster of the embodiment of the utility model.

[0021] Figure 6 It is a principle block diagram of an embodiment of the utility model.

[0022] Figure 7 It is a circuit diagram of an embodiment of the utility model.

[0023] The numbers in the figure are: 1. GIS shell; 11. basin insulator; 2. ultrasonic detection module; 3. central processing unit; 4. electromagnetic flux acquisition module; 41. coil; 5. tension adjuster; 51. base; 511. side hole; 512. first wire hole; 52. winding reel; 521. wire groove; 522. second wire hole; 53. adjustment knob; 54. control button; 6. temperature detection module; 7. display module; 8. power module. DETAILED DESCRIPTION

[0024] The utility model is described below in conjunction with the accompanying drawings. The specific implementation methods described herein are only used to illustrate and explain the utility model and are not used to limit the utility model. Without departing from the design spirit of the utility model, various modifications and improvements made to the technical solution of the utility model by ordinary technicians in this field should fall within the protection scope of the utility model.

[0025] like Figures 1 to 7 As shown, the GIS pot-type insulator online detection device of this embodiment includes a GIS shell 1 and a pot-type insulator 11 arranged in the GIS shell. In addition, the GIS pot-type insulator online detection device also includes an ultrasonic detection module 2, a central processing unit 3, an electromagnetic flux acquisition module 4, a tension adjuster 5, a temperature detection module 6, a display module 7 and a power supply module 8.

[0026] The ultrasonic detection module 2 is installed on the outer wall of the GIS housing 1, and is used to send and receive ultrasonic signals. It is electrically connected to the central processor 3, and the central processor 3 is used to determine whether the peak value of the ultrasonic signal reflected by the ultrasonic detection module 2 exceeds the normal range. In this embodiment, the ultrasonic detection module 2 is a HC-SR04 ultrasonic sensor, which can transmit and receive ultrasonic signals. The ultrasonic detection module 2 is represented by P2 in the circuit. The central processor 3 uses an Arduino microcontroller, which is represented by U1 in the circuit.

[0027] The electromagnetic flux acquisition module 4 is installed on the outer wall of the GIS housing 1, which is electrically connected to the central processor 3 and is used to detect changes in magnetic flux. The model of the electromagnetic flux acquisition module 4 is BNWGK-300, which is represented by E1 in the circuit. It has a coil 41, which is used to surround the outside of the GIS housing 1. The tension adjuster 5 is set at both ends of the coil 41, which is used to adjust the tightness of the coil 41 and fix the coil 41 on the GIS housing 1. Specifically in this embodiment, the tension adjuster 5 includes a base 51, a winding reel 52, an adjustment knob 53 and a control button 54. Among them, the base 51 is a columnar structure with an open upper end and a sealed lower end. The side wall of the base 51 is provided with a side hole 511 and a first wire hole 512, and the first wire hole 512 is used to fix one end of the coil 41. The winding disk 52 is arranged in the base 51, and the center position of the bottom of the winding disk 52 is rotatably connected to the center position of the bottom of the base 51. The winding disk 52 can rotate with the center of the base 51 as the center of the circle. The side wall of the winding disk 52 is circumferentially provided with a wire groove 521, and the wire groove 521 is provided with a second wire hole 522, and the second wire hole 522 is used to fix the other end of the coil 41. The adjustment knob 53 is arranged above the winding disk 52, which includes a shell and a motor. The motor is arranged in the shell, and the motor shaft extends out of the shell and is fixedly connected to the middle part of the top of the winding disk 52, which is used to drive the winding disk 52 to rotate. The control button 54 and the motor are both electrically connected to the central processor 3, and the control button 54 is used to control the rotation of the motor.

[0028] The operating principle of the tension adjuster 5 is as follows: first, fix one end of the coil 41 on the first wire hole 512, then wrap the other end of the coil 41 around the outer wall of the GIS shell 1 for one or several times, and then insert it into the base 51 through the side hole 511 of the base 51, and fix it with the second wire hole 522 on the winding disk 52, then press the control button 54, and after receiving the control command, the central processor 3 controls the motor on the adjustment knob 53 to rotate, and the motor drives the winding disk 52 to rotate, so that the coil 41 is wound on the winding disk 52, thereby tightening the entire coil 41, so that the coil 41 is fixed on the side wall of the GIS shell 1. The adjustment knob 53 of the tension adjuster 5 is represented by B1 in the circuit, and the control buttons 54 are represented by K1 and K2, where the button K1 is used to control the forward rotation of the motor, and the button K2 is used to control the reverse rotation of the motor.

[0029] The temperature detection module 6 is installed on the outer wall of the GIS housing 1, and is electrically connected to the central processor 3, and is used to collect temperature data of the pot insulator 11 and send the temperature data to the central processor 3. The temperature detection module 6 of this embodiment includes a plurality of temperature sensors of model DS18B20, which are distributed on the GIS housing 1 and are used to detect the temperature of multiple areas. The plurality of temperature sensors are represented by J1, J2, ..., Jn in the circuit.

[0030] The display module 7 is electrically connected to the central processing unit 3 and is used to display the data processed and analyzed by the central processing unit 3. The display module 7 of this embodiment is a display, represented by G1 in the circuit. The display module 7 and the central processing unit 3 of this embodiment are detachably mounted on the coil 41.

[0031] The power module 8 is used to provide operating voltage.

[0032] In addition, the GIS pot-type insulator online detection device of this embodiment is also provided with a buzzer and a reset switch, wherein the buzzer is represented by BZ in the circuit, and the reset switch is represented by RSTK in the circuit.

[0033] The use principle of the utility model is: firstly surround the coil 41 of the electromagnetic flux acquisition module 4 outside the GIS shell 1, then fix the coil 41 on the GIS shell 1 through the tension adjuster 5, and install the central processing unit 3 and the display module 7 on the coil 41 opposite to the tension adjuster 5, so that the staff can view the data on the display screen conveniently, and then install the ultrasonic detection module 2 and the temperature detection module 6 on the GIS shell 1. When the basin insulator 11 inside the GIS is damaged or partially discharged, the change of magnetic flux is first detected by the coil 41 of the electromagnetic flux acquisition module 4, and the detection signal is sent to the central processing unit 3. The central processing unit 3 sends a control instruction to the ultrasonic detection module 2 according to the detection signal. The ultrasonic detection module 2 sends an ultrasonic wave. When the ultrasonic wave encounters the position where the basin insulator 11 inside the GIS is damaged or partially discharged, the ultrasonic detection module 2 sends a feedback signal to the central processing unit 3 after receiving the reflected ultrasonic wave. The central processing unit 3 analyzes and determines whether the peak value of the reflected ultrasonic wave exceeds the peak value of the central processing unit 3. The normal range set in the ultrasonic detection module 3, when the peak value exceeds the normal range, the central processing unit 3 sends a control instruction to the temperature detection module 6, the temperature detection module 6 collects the temperatures of multiple areas, and sends the collected signals to the central processing unit 3 to compare and analyze the multiple temperature signals. Finally, the central processing unit 3 analyzes the location of the fault point according to the collected information of the ultrasonic detection module 2 and the temperature detection module 6, and displays it on the display module 7, thereby realizing real-time online detection of the state of the GIS pot insulator, thereby quantitatively evaluating the degree of insulation degradation of the GIS pot insulator, timely discovering the early faults of the GIS pot insulator, and improving the stable operation of the GIS equipment.

Claims

1. A GIS pot-type insulator online detection device, comprising a GIS housing and a pot-type insulator arranged in the GIS housing; characterized in that: It also includes an ultrasonic detection module, a central processing unit, an electromagnetic flux acquisition module, a tension regulator, a temperature detection module, a display module and a power module; wherein, The ultrasonic detection module is installed on the outer wall of the GIS housing and is used to send and receive ultrasonic signals. It is electrically connected to the central processor, and the central processor is used to determine whether the peak value of the ultrasonic signal reflected by the ultrasonic detection module exceeds the normal range; The electromagnetic flux acquisition module is installed on the outer wall of the GIS shell, which is electrically connected to the central processor and is used to detect the change of the magnetic flux of the pot insulator; the electromagnetic flux acquisition module includes a coil, the coil is used to surround the outside of the GIS shell, and the tension regulator is set at both ends of the coil to adjust the tightness of the coil and fix the coil on the GIS shell; The temperature detection module is installed on the outer wall of the GIS housing and is electrically connected to the central processor to collect temperature data of the pot insulator and send the temperature data to the central processor; The display module is electrically connected to the central processing unit and is used to display the data processed and analyzed by the central processing unit; The power module is used to provide operating voltage.

2. The GIS pot-type insulator online detection device according to claim 1 is characterized in that: The ultrasonic detection module includes an HC-SR04 ultrasonic sensor.

3. The GIS pot-type insulator online detection device according to claim 1 is characterized in that: The model of the electromagnetic flux acquisition module is BNWGK-300.

4. The GIS pot-type insulator online detection device according to claim 1 is characterized in that: The tension adjuster includes a base, a winding reel, an adjusting knob and a control button. The base is a columnar structure with an open upper end and a sealed lower end. The side wall of the base is provided with a side hole and a first wire hole, and the first wire hole is used to fix one end of the coil; the winding reel is arranged in the base, and the center position of the bottom of the winding reel is rotatably connected to the center position of the bottom of the base, and the winding reel can rotate with the center of the base as the center of a circle; the side wall of the winding reel is circumferentially provided with a wire groove, and the wire groove is provided with a second wire hole, and the second wire hole is used to fix the other end of the coil; the adjusting knob is arranged above the winding reel, which includes a shell and a motor, the motor is arranged in the shell, the motor shaft extends out of the shell, and is fixedly connected to the middle part of the top end of the winding reel, for driving the winding reel to rotate; the control button and the motor are both electrically connected to the central processing unit, and the control button is used to control the rotation of the motor.

5. The GIS pot-type insulator online detection device according to claim 1 is characterized in that: The temperature detection module includes a plurality of temperature sensors, and the model of the temperature sensors is DS18B20.

6. The GIS pot-type insulator online detection device according to claim 1 is characterized in that: The display module is a display.

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