System for monitoring and early warning of circuit breaker insulator creepage

Abstract

The invention discloses a system for monitoring and warning of creepage of circuit breaker insulators, which comprises a support seat, a circuit breaker, an insulator arranged on a conductive rod of the circuit breaker, a voltage detection device, a drying device, a humidity sensor and a controller; the voltage detection device comprises a metal conductive ring and a voltage detector, which are used to measure the voltage value on the surface of the insulator; the drying device comprises a drying fan and a pipeline, which are used to dehumidify the insulator; the humidity sensor is arranged on the outer surface of the support seat and close to the insulator, and is used to detect the humidity of the environment in which the insulator is located; the controller is electrically connected with the voltage detector, the drying fan and the humidity sensor, and is used to start the drying fan by measuring the creepage caused by high humidity, so as to eliminate the creepage phenomenon, avoid the harm of creepage of the insulator caused by moisture, and ensure normal power use.

Description

Technical Field

[0001] The present invention relates to the technical field of protecting circuit breaker insulators, and more particularly to a system for monitoring and early warning of circuit breaker insulator creepage. Background Art

[0002] Circuit breaker insulators are devices that are installed on conductors with different potentials connecting the circuit breaker and can withstand voltage and mechanical stress. Insulator creepage refers to the charged area where the insulating material around the conductor is polarized, resulting in the insulating material being charged. Insulator creepage is caused by the accumulation of conductive dirt such as dust and oil on the surface of the line insulator. In humid weather, discharge occurs on the surface of the insulator, which generally causes leakage. In severe cases, it may cause insulation breakdown, flashover, and even fire, resulting in serious consequences. Therefore, it is very important to monitor and prevent circuit breaker insulators to ensure the normal use of insulators.

[0003] The name of the prior art is a high-voltage insulator creepage detection device, and the announcement number is CN 209342857 U. Its real-time detection of insulator creepage and insulator protection is to monitor the creepage voltage value on the insulator surface to monitor the creepage phenomenon on the insulator surface, and according to the monitored creepage strength, the voltage is reduced to protect the insulator and extend the life of the insulator. The prior art protects the insulator and avoids safety accidents caused by insulator creepage by reducing the voltage to eliminate the arc. Although the detection device of the prior art can detect the creepage of the insulator and protect it, the voltage reduction affects the normal operation of the equipment, which is not conducive to the normal operation of production. Therefore, the prior art needs to be improved and enhanced. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that real-time detection and insulator protection of circuit breaker insulators are not conducive to normal production operation.

[0005] In order to solve the above-mentioned technical problems and achieve the following advantages, the present invention provides a system for monitoring and warning of circuit breaker insulator creepage, which includes a support seat, a circuit breaker and an insulator, wherein the circuit breaker is provided at the middle position of the lower surface of the support seat, the circuit breaker is fixedly connected to the support seat, and the insulator is fixedly provided at the middle position of the upper surface of the support seat, a conductive rod is passed through the insulator, and the lower end of the conductive rod passes through the inside of the support seat and is connected to the circuit breaker, and also includes a voltage detection device, a drying device, a humidity sensor and a controller;

[0006] The voltage detection device includes a metal conductive ring and a voltage detector, which is used to measure the voltage value on the surface of the insulator. The inner wall of the metal conductive ring is tightly fitted with the outer wall of the insulator and is fixed on the insulator and close to the grounding wire terminal. The voltage detector is electrically connected to the metal conductive ring.

[0007] The drying device includes a drying fan and a pipeline, which are used to dehumidify the insulator. The air outlet of the drying fan is connected to the pipeline, and the air outlet of the pipeline is arranged directly above the insulator.

[0008] The humidity sensor is arranged on the outer surface of the support base and close to the insulator, and is used to detect the humidity of the environment in which the insulator is located;

[0009] The controller is electrically connected to the voltage detector, the drying fan and the humidity sensor, and is used to start the drying fan when the measured value of the humidity sensor is greater than the humidity setting value D and the voltage value measured by the voltage detector is greater than the voltage setting value U, and to shut down the drying fan when the measured value of the humidity sensor is less than the humidity setting value D and the voltage value measured by the voltage detector is less than the voltage setting value U.

[0010] Preferably, it also includes an alarm, which is arranged on a support base and is electrically connected to the controller. When the measured value of the humidity sensor is less than the humidity setting value D, and the voltage value measured by the voltage detector is greater than the voltage setting value U, the alarm is activated to emit light and an alarm sound. At the same time, the controller sends the current measured value of the humidity sensor and the current measured value of the voltage detector, as well as the alarm signal, to the management background and operating personnel via wireless or wired transmission.

[0011] Preferably, it further comprises a first valve, a second valve, an infrared temperature sensor and a dry ice storage tank connected to the pipeline;

[0012] The first valve is arranged at the air outlet of the drying fan and is used to control the connection between the drying fan and the pipeline;

[0013] The second valve is arranged on the injection port of the dry ice storage tank and is used to control the connection between the dry ice storage tank and the pipeline.

[0014] The infrared temperature sensor is used to detect the temperature of the insulator;

[0015] The dry ice storage tank is used to cool the insulator and its surroundings and extinguish fire;

[0016] The first valve, the second valve and the infrared temperature sensor are electrically connected to the controller respectively. When the measured value of the humidity sensor is less than the humidity setting value D, and the voltage value measured by the voltage detector is greater than the voltage setting value U, and the measured value of the infrared temperature sensor is greater than the temperature setting value C, the alarm is kept started to light up and sound an alarm. At the same time, the controller transmits the current measured value of the humidity sensor, the current measured value of the voltage detector and the current measured value of the infrared temperature sensor, as well as the alarm signal, to the management background and the operating personnel through wireless or wired transmission, turns off the drying fan and the first valve, and opens the second valve; when the measured value of the infrared temperature sensor is less than the temperature setting value C, the second valve is closed.

[0017] Preferably, when the value measured by the infrared temperature sensor is greater than the temperature setting value C and remains for more than the set time T, the controller controls the circuit breaker to open.

[0018] Preferably, the temperature setting value C, humidity setting value D and voltage setting value U are set according to insulator production safety parameter values.

[0019] Preferably, the pipe outlet is trumpet-shaped.

[0020] Preferably, the infrared temperature sensor is arranged on the inner wall of the wall or the inner wall of the cabinet, and the detection head is aimed at the insulator.

[0021] Preferably, the metal conductive ring is a metal conductive non-closed ring.

[0022] The present invention has at least the following beneficial effects:

[0023] 1. The present invention combines a controller, a voltage detector, a humidity sensor and a drying fan, so that when insulator creepage is caused by a humid environment, the insulator can be dehumidified by the drying fan to eliminate the insulator creepage phenomenon, thereby realizing the monitoring of the insulator creepage phenomenon and preventing the harm of insulator creepage, avoiding the occurrence of safety accidents, and the entire monitoring and prevention process does not require the voltage reduction of the conductive rod, ensuring normal power consumption. Specifically: when the measured value of the humidity sensor of this system is greater than the humidity setting value D, and the voltage value measured by the voltage detector is greater than the voltage setting value U, the controller starts the drying fan to dehumidify the insulator and its environment, and also plays a certain dust removal role. After the drying fan has been running for a period of time, when the measured value of the humidity sensor is less than the humidity setting value D, and the voltage value measured by the voltage detector is less than the voltage setting value U, the drying fan is turned off. Such monitoring can avoid the harm of insulator creepage caused by humidity and ensure normal power consumption at the same time.

[0024] 2. The present invention can monitor insulator creepage that is not caused by moisture through the combination of a controller, a voltage detector, a humidity sensor, a drying fan and an alarm. The alarm can send an alarm sound and an indicator light to the site, and send it to the management background and operating personnel, so as to timely report the insulator creepage phenomenon that is not affected by a humid environment and improve safety. Specifically: after the drying fan dehumidifies the insulator and its surrounding environment, or when the surrounding environment of the insulator is dry, when the measured value of the humidity sensor is less than the humidity setting value D, and the voltage value measured by the voltage detector is greater than the voltage setting value U, the controller starts the alarm to light up and send an alarm sound. At the same time, the controller transmits the current measured value of the humidity sensor and the current measured value of the voltage detector, as well as the alarm signal, to the management background and operating personnel through wireless or wired transmission, so as to timely report the insulator creepage phenomenon that is not affected by a humid environment, eliminate environmental influences, and conduct inspections on lines and insulators more quickly, thereby improving maintenance speed and safety.

[0025] 3. The present invention can further improve safety by combining a controller, a voltage detector, a humidity sensor, a dry fan, an alarm, a first valve, a second valve, an infrared temperature sensor and a dry ice storage tank. When the temperature rises due to creepage or insulation breakdown caused by non-humidity of the insulator, dry ice can be used to cool down and eliminate possible fire sources. When the temperature continues to remain at a high temperature, the controller can control the circuit breaker to disconnect, thereby improving the safety of the entire power supply line.

[0026] 4. The metal conductive ring of the present invention is a metal conductive non-closed ring, which can prevent the voltage on the surface of the insulator from forming a loop in the metal conductive ring and affecting the detection.

[0027] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of the structure of a system for monitoring and early warning of circuit breaker insulator creepage according to the present invention;

[0029] Figure 2 It is a schematic structural diagram of another implementation form of the system for monitoring and early warning of circuit breaker insulator creepage according to the present invention;

[0030] Figure 3 It is a schematic structural diagram of a metal conductive non-closed ring of the present invention;

[0031] Among them, the circuit breaker 1; the support base 2; the humidity sensor 3; the metal conductive ring 4; the insulator 5; the pipe air outlet 6; the pipe 7; the drying fan 8; the first valve 9; the dry ice storage tank 10; the second valve 11; the controller 12; the voltage detector 13; the alarm 14; the metal conductive non-closed ring 15; and the non-closed part 16. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0033] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. "Include" or "comprise" and other similar words used in the present disclosure mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and other similar words are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0034] In order to keep the following description of the embodiments of the present disclosure clear and concise, the present disclosure omits detailed descriptions of well-known functions and well-known components.

[0035] Example

[0036] Figure 1 A specific implementation form of the present invention is shown, which is a system for monitoring and warning of circuit breaker insulator creepage, comprising a support seat 2, a circuit breaker 1 and an insulator 5, wherein the circuit breaker 1 is provided at the middle position of the lower surface of the support seat 2, the circuit breaker 1 is fixedly connected to the support seat 2, and the insulator 5 is fixedly provided at the middle position of the upper surface of the support seat 2, a conductive rod is passed through the insulator 5, and the lower end of the conductive rod passes through the inside of the support seat and is connected to the circuit breaker; the system of the present invention also includes a voltage detection device, a drying device, a humidity sensor 3 and a controller 12;

[0037] The voltage detection device includes a metal conductive ring 4 and a voltage detector 13, which is used to measure the voltage value on the surface of the insulator 5. The inner wall of the metal conductive ring 4 is tightly fitted with the outer wall of the insulator and is fixed on the insulator and close to the grounding wire terminal. The voltage detector 13 is electrically connected to the metal conductive ring 4;

[0038] The drying device includes a drying fan 8 and a pipeline 7, which are used to dehumidify the insulator 5. The air outlet of the drying fan 8 is connected to the pipeline, and the pipeline air outlet 6 is arranged directly above the insulator 5;

[0039] The humidity sensor 3 is arranged on the outer surface of the support base and close to the insulator, and is used to detect the humidity of the environment in which the insulator is located;

[0040] The controller 12 is electrically connected to the voltage detector 13, the drying fan 8 and the humidity sensor 3, and is used to start the drying fan 8 when the measured value of the humidity sensor 3 is greater than the humidity setting value D and the voltage value measured by the voltage detector 13 is greater than the voltage setting value U, and to shut down the drying fan 8 when the measured value of the humidity sensor 3 is less than the humidity setting value D and the voltage value measured by the voltage detector 13 is less than the voltage setting value U.

[0041] The implementation process of the present invention is as follows: when the measured value of the humidity sensor 3 of the system is greater than the humidity setting value D, and the voltage value measured by the voltage detector 13 is greater than the voltage setting value U, the controller 12 starts the drying fan 8 to dehumidify the insulator 5 and its environment, and also plays a certain dust removal role. After the drying fan 8 runs for a period of time, when the measured value of the humidity sensor 3 is less than the humidity setting value D, and the voltage value measured by the voltage detector 13 is less than the voltage setting value U, the drying fan 8 is turned off. Such monitoring can avoid the harm of insulator creepage caused by moisture, while ensuring normal power consumption.

[0042] On the basis of the above embodiment, it also includes an alarm 14, which is arranged on the support base 2. The alarm 14 is electrically connected to the controller 12. When the measured value of the humidity sensor 3 is less than the humidity setting value D, and the voltage value measured by the voltage detector 13 is greater than the voltage setting value U, the alarm 14 is started to emit light and an alarm sound. At the same time, the controller 12 sends the current measured value of the humidity sensor 3 and the current measured value of the voltage detector 13, as well as the alarm signal, to the management background and the operating personnel through wireless or wired transmission.

[0043] The implementation process of the present invention is as follows: after the drying fan 8 dehumidifies the insulator 5 and its surrounding environment, or when the surrounding environment of the insulator is dry, the measured value of the humidity sensor 3 is less than the humidity setting value D, and the voltage value measured by the voltage detector 13 is greater than the voltage setting value U, the controller 12 starts the alarm 14 to emit light and sound an alarm. At the same time, the controller 12 transmits the current measured value of the humidity sensor 3 and the current measured value of the voltage detector 13, as well as the alarm signal, to the management background and operating personnel through wireless or wired transmission, so as to timely notify the creepage phenomenon of the insulator 5 affected by the non-humid environment, eliminate the environmental impact, and conduct inspections on the line and the insulator 5 more quickly, thereby improving the maintenance speed and safety.

[0044] Based on the above embodiments, Figure 2 Another specific implementation form of the present invention is shown, which also includes a first valve 9, a second valve 11, an infrared temperature sensor (not shown in the figure) and a dry ice storage tank 10 connected to the pipeline 7;

[0045] The first valve 9 is arranged at the air outlet of the drying fan 8, and is used to control the connection between the drying fan 8 and the pipeline 7;

[0046] The second valve 11 is disposed on the injection port of the dry ice storage tank 10 and is used to control the communication between the dry ice storage tank 10 and the pipeline 7.

[0047] An infrared temperature sensor, which is used to detect the temperature of the insulator 5;

[0048] A dry ice storage tank 10, which is used to cool the insulator 5 and its surroundings and to extinguish fire;

[0049] The first valve 9, the second valve 11 and the infrared temperature sensor are electrically connected to the controller 12 respectively. When the measured value of the humidity sensor 3 is less than the humidity setting value D, and the voltage value measured by the voltage detector 13 is greater than the voltage setting value U, and the measured value of the infrared temperature sensor is greater than the temperature setting value C, the alarm 14 is kept started to emit light and sound an alarm. At the same time, the controller 12 transmits the current measured value of the humidity sensor 3, the current measured value of the voltage detector 13 and the current measured value of the infrared temperature sensor, as well as the alarm signal, to the management background and the operator through wireless or wired transmission, closes the dry fan 8 and the first valve 9, opens the second valve 11, and sprays the dry ice high-pressure gas onto the insulator to cool the insulator and its surroundings; when the measured value of the infrared temperature sensor is less than the temperature setting value C, closes the second valve 11. In this way, safety can be further improved. When the temperature of the insulator 5 rises due to creepage or insulation breakdown caused by non-humidity, dry ice can be used to cool down and eliminate possible fire sources to reduce the occurrence of accidents.

[0050] On the basis of the above embodiment, when the value measured by the infrared temperature sensor is greater than the temperature setting value C and remains for more than the set time T, the controller 12 controls the circuit breaker 1 to disconnect, which can improve the safety of the entire power supply line.

[0051] On the basis of the above embodiment, the temperature setting value C, the humidity setting value D and the voltage setting value U are set according to the insulator production safety parameter values.

[0052] On the basis of the above embodiment, the duct air outlet 6 is trumpet-shaped.

[0053] On the basis of the above embodiments, the infrared temperature sensor is arranged on the inner wall of the wall or the inner wall of the cabinet, and the detection head is aimed at the insulator. Conventional circuit breaker insulators are arranged in the indoor cabinet.

[0054] Based on the above embodiments, Figure 3 As shown, the metal conductive ring is a metal conductive non-closed ring 15, which is a metal conductive ring with a non-closed portion 16. This can prevent the voltage on the surface of the insulator from forming a loop in the metal conductive ring and affecting the detection.

[0055] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and the embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily realized. Therefore, without departing from the general concept defined by the claims and equivalent scope, the present invention is not limited to the specific details and the illustrations shown and described here.

Claims

1. A system for monitoring and warning of circuit breaker insulator creepage, comprising a support seat, a circuit breaker and an insulator, wherein the circuit breaker is arranged at the middle position of the lower surface of the support seat, the circuit breaker is fixedly connected to the support seat, an insulator is fixedly arranged at the middle position of the upper surface of the support seat, a conductive rod is passed through the insulator, and the lower end of the conductive rod passes through the interior of the support seat and is connected to the circuit breaker, characterized in that: It also includes a voltage detection device, a drying device, a humidity sensor and a controller; The voltage detection device comprises a metal conductive ring and a voltage detector, which is used to measure the voltage value on the surface of the insulator. The inner wall of the metal conductive ring is tightly fitted with the outer wall of the insulator and is fixed on the insulator and close to the grounding wire end. The voltage detector is electrically connected to the metal conductive ring, and the metal conductive ring is a metal conductive non-closed ring. The drying device includes a drying fan and a pipeline, which are used to dehumidify the insulator. The air outlet of the drying fan is connected to the pipeline, and the air outlet of the pipeline is arranged directly above the insulator. The air outlet of the pipeline is trumpet-shaped; The humidity sensor is arranged on the outer surface of the support base and close to the insulator, and is used to detect the humidity of the environment in which the insulator is located; The controller is electrically connected to the voltage detector, the drying fan and the humidity sensor, and is used to start the drying fan when the measured value of the humidity sensor is greater than the humidity setting value D and the voltage value measured by the voltage detector is greater than the voltage setting value U, and to turn off the drying fan when the measured value of the humidity sensor is less than the humidity setting value D and the voltage value measured by the voltage detector is less than the voltage setting value U; It also includes an alarm, which is arranged on the support base and is electrically connected to the controller. When the measured value of the humidity sensor is less than the humidity setting value D, and the voltage value measured by the voltage detector is greater than the voltage setting value U, the alarm is activated to emit light and an alarm sound. At the same time, the controller transmits the current measured value of the humidity sensor and the current measured value of the voltage detector, as well as the alarm signal, to the management background and the operator through wireless or wired transmission; Also included are a first valve, a second valve, an infrared temperature sensor, and a dry ice storage tank connected to the pipeline; The first valve is arranged at the air outlet of the drying fan and is used to control the connection between the drying fan and the pipeline; The second valve is arranged on the injection port of the dry ice storage tank and is used to control the communication between the dry ice storage tank and the pipeline; The infrared temperature sensor is used to detect the temperature of the insulator; The dry ice storage tank is used to cool the insulator and its surroundings and extinguish fire; The first valve, the second valve and the infrared temperature sensor are electrically connected to the controller respectively. When the measured value of the humidity sensor is less than the humidity setting value D, and the voltage value measured by the voltage detector is greater than the voltage setting value U, and the measured value of the infrared temperature sensor is greater than the temperature setting value C, the alarm is kept on emitting light and sounding an alarm. At the same time, the controller transmits the current measured value of the humidity sensor, the current measured value of the voltage detector and the current measured value of the infrared temperature sensor, as well as the alarm signal, to the management background and the operating personnel through wireless or wired transmission, closes the drying fan and the first valve, and opens the second valve; when the measured value of the infrared temperature sensor is greater than the temperature setting value C and remains greater than the set time T, the controller controls the circuit breaker to disconnect; when the measured value of the infrared temperature sensor is less than the temperature setting value C, closes the second valve.

2. The system for monitoring and warning circuit breaker insulator creepage according to claim 1, characterized in that: The temperature setting value C, humidity setting value D and voltage setting value U are set according to the insulator production safety parameter values.

3. The system for monitoring and warning circuit breaker insulator creepage according to claim 2, characterized in that: The infrared temperature sensor is arranged on the inner wall of the wall or the inner wall of the cabinet, and the detection head is aimed at the insulator.

Images