Novel circuit breaker device with contact temperature and partial discharge fault intelligent monitoring function

Abstract

The utility model relates to the technical field of power equipment, in particular to a novel circuit breaker device capable of intelligently monitoring contact temperature and partial discharge faults, which can monitor and intelligently judge the state of equipment in real time, give an early warning in time and avoid electrical equipment damage or safety accidents caused by overhigh temperature or partial discharge faults. A temperature sensor and a partial discharge sensor are arranged in the circuit breaker device, and temperature and partial discharge signals are monitored and analyzed in real time in combination with an intelligent processing module. And when the contact temperature or the partial discharge fault exceeds a preset threshold value, the system gives an alarm or automatically takes protection measures, so that the safety and the reliability of a power system are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to power equipment technical field, concretely is a novel circuit breaker device with contact temperature and partial discharge fault intelligent monitoring. BACKGROUND

[0002] Circuit breaker is an important protection device in power system, which is used to protect electrical equipment from damage caused by overload, short circuit and other faults. The traditional circuit breaker device usually has basic overload protection function, but in actual use process, due to the change of current and voltage, the contact part of circuit breaker will appear temperature too high or partial discharge fault, and these two fault modes are often difficult to be found in early stage, which leads to serious damage of equipment, and even causes fire or more serious accident.

[0003] The temperature of contact too high is usually caused by too large current or poor contact, which will lead to increased resistance and thus generate excessive heat; and partial discharge fault is caused by aging or damage of insulating material of electrical equipment, and partial discharge phenomenon will occur inside electrical equipment, which may cause insulation breakdown in serious case.

[0004] Therefore, real-time monitoring of contact temperature and partial discharge fault state is of great significance to ensure the safe operation of power system, and the present technical scheme proposes a novel circuit breaker device with contact temperature and partial discharge fault intelligent monitoring. SUMMARY

[0005] The utility model discloses a novel circuit breaker device with contact temperature and partial discharge fault intelligent monitoring, which solves the problems in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] A novel circuit breaker device with contact temperature and partial discharge fault intelligent monitoring, comprising a temperature monitoring module, a partial discharge monitoring module, an intelligent control unit, an alarm and protection module and an electrical connection module; the temperature monitoring module comprises a temperature sensor, the temperature monitoring module monitors the temperature of the contact part of the circuit breaker in real time through the temperature sensor, and transmits the obtained temperature data to the intelligent control unit; the intelligent control unit judges according to the preset temperature threshold value, and when the contact temperature exceeds the preset value, the system will issue a temperature too high alarm and automatically disconnect the circuit;

[0008] The partial discharge monitoring module comprises a partial discharge sensor, which monitors the partial discharge phenomenon inside the circuit breaker in real time; the partial discharge sensor can detect the weak current fluctuation inside the electrical equipment, and when the intensity of partial discharge reaches a dangerous value, the system will issue a partial discharge fault alarm and take corresponding protection measures;

[0009] The intelligent control unit is used for receiving signals from the temperature sensor and the partial discharge sensor, and performing data processing, the intelligent control unit judges the equipment state based on the sensor data, analyzes the danger of the contact temperature and the partial discharge fault, and when the temperature exceeds the standard or the partial discharge fault occurs, the intelligent control unit starts an alarm system and controls the action of the circuit breaker (such as automatically disconnecting the circuit, reducing the load, etc.) according to the set protection logic;

[0010] The alarm and protection module includes an audible and visual alarm device, which is used for real-time display of the equipment state and alarm information, through which the operator can timely understand the working state of the circuit breaker and take corresponding measures. At the same time, the module can be connected with a remote monitoring system to transmit the alarm information to a remote control center, facilitating maintenance personnel to handle;

[0011] The electrical connection module is responsible for connecting the circuit breaker and other devices in the power system, and the electrical connection module adopts high-quality electrical connection materials to ensure the stability and reliability of the transmission signal;

[0012] By real-time monitoring of the contact temperature and partial discharge fault of the circuit breaker, the running state of the circuit breaker is comprehensively mastered through the combination of multiple sensors, when the contact temperature or partial discharge fault reaches the preset threshold, the system can timely issue an alarm and automatically disconnect the circuit or take other protection measures to prevent equipment damage, and record the temperature and partial discharge data, analyze historical data to predict possible equipment failures and take preventive measures in advance, thereby prolonging the service life of the circuit breaker and reducing maintenance costs; through intelligent algorithm processing of sensor data, the system can automatically adjust the working state of the circuit breaker, and continuously optimize the control strategy through artificial intelligence technology to improve the reliability and intelligent level of the circuit breaker.

[0013] Compared with the prior art, the utility model has the advantages that through real-time monitoring of the contact temperature and partial discharge fault, potential safety hazards are found in time, protection measures are taken in advance, and the safety of the power system is significantly improved;

[0014] Through monitoring and analyzing the running state of the equipment, preventive maintenance can be realized, faults can be found and repaired in advance, and the suddenness of traditional equipment failure is avoided, thereby reducing the maintenance cost;

[0015] By timely finding problems such as excessively high temperature or partial discharge fault, the equipment is prevented from being in an abnormal state for a long time, thereby prolonging the service life of the circuit breaker;

[0016] Through intelligent control, the state of the circuit breaker is automatically adjusted, and the system can be connected with a remote monitoring system, facilitating the remote monitoring and control of the management personnel, and having a high automation level. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a framework view of a new type of circuit breaker device with contact temperature and partial discharge fault intelligent monitoring.

[0018] Wherein: temperature monitoring module 1, partial discharge monitoring module 2, intelligent control unit 3, alarm and protection module 4, electrical connection module 5. DETAILED DESCRIPTION

[0019] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0020] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features with "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0021] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0022] The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0023] Please refer to Figure 1A new circuit breaker device with contact temperature and partial discharge fault intelligent monitoring, including temperature monitoring module 1, partial discharge monitoring module 2, intelligent control unit 3, alarm and protection module 4, electrical connection module 5; Temperature monitoring module 1 includes temperature sensor, temperature monitoring module 1 monitors the temperature of circuit breaker contact part in real time through temperature sensor, and transmits the obtained temperature data to intelligent control unit 3; Intelligent control unit 3 judges according to the preset temperature threshold value, when the contact temperature exceeds the preset value, the system will issue a temperature alarm, and can automatically disconnect the circuit;

[0024] Partial discharge monitoring module 2 includes partial discharge sensor, which monitors the partial discharge phenomenon in the circuit breaker in real time through the partial discharge sensor; The partial discharge sensor can detect the weak current fluctuation occurring in the electrical equipment; When the intensity of partial discharge reaches a dangerous value, the system will issue a partial discharge fault alarm and take corresponding protection measures;

[0025] Intelligent control unit 3 is used for receiving signals from temperature sensor and partial discharge sensor and processing data; Intelligent control unit 3 judges the device state based on sensor data, analyzes the danger of contact temperature and partial discharge fault, and starts the alarm system when the temperature exceeds the standard or partial discharge fault occurs, and controls the action of circuit breaker (such as automatic disconnection of circuit, reduction of load, etc.) according to the set protection logic;

[0026] Alarm and protection module 4 includes audible and visual alarm device, which is used to display the device state and alarm information in real time; Through this module, the operator can timely understand the working state of the circuit breaker and take corresponding measures. At the same time, this module can be connected with remote monitoring system to transmit alarm information to remote control center, which is convenient for maintenance personnel to handle;

[0027] Electrical connection module 5 is responsible for connecting circuit breaker with other devices in power system, and electrical connection module 5 adopts high-quality electrical connection materials to ensure the stability and reliability of signal transmission;

[0028] Through real-time monitoring of circuit breaker contact temperature and partial discharge fault, through the combination of various sensors, the running state of circuit breaker is comprehensively mastered; When the contact temperature or partial discharge fault reaches the preset threshold value, the system can timely issue an alarm and automatically disconnect the circuit or take other protection measures through intelligent control unit 3 to prevent equipment damage, and record temperature and partial discharge data; Through analysis of historical data, the possible faults of the equipment can be predicted, and preventive work can be done in advance, so as to prolong the service life of the circuit breaker and reduce the maintenance cost; Through intelligent algorithm processing of sensor data, the system can automatically adjust the working state of circuit breaker, and through artificial intelligence technology, the control strategy can be continuously optimized to improve the reliability and intelligent level of circuit breaker.

[0029] In the embodiment of the present application, the temperature sensor includes a thermocouple, a thermistor, and an infrared temperature sensor, wherein the thermistor includes an NTC thermistor and a PTC thermistor, and the NTC thermistor is preferred in the technical solution, which has the advantages of fast response speed, high precision, and good stability, and is suitable for high-precision temperature monitoring;

[0030] The temperature monitoring module 1 also includes a signal conditioning circuit, and the signal output by the temperature sensor needs to be conditioned and converted by the signal conditioning circuit, wherein typical signal conditioning components include an amplifier and an analog-to-digital converter (ADC). The amplifier is used to increase the strength of the signal, and the ADC converts the analog signal into a digital signal for subsequent processing;

[0031] The temperature monitoring module 1 senses the temperature of the contact part of the circuit breaker in real time through the NTC thermistor. When the temperature rises, the resistance value of the NTC thermistor decreases, the signal conditioning circuit converts the output signal into a suitable voltage or current value, and the signal is transmitted to the intelligent control unit 3, which analyzes the signal. When the temperature exceeds the preset safety threshold, an alarm is triggered and subsequent actions (such as disconnecting the circuit or starting load shedding) are performed.

[0032] The partial discharge sensor includes a capacitive sensor or a high-frequency current sensor, and the capacitive sensor is preferred in the technical solution, which can detect the change of the electric field caused by the partial discharge phenomenon, and is usually installed near the shell of the electrical equipment, which can sense the change of the electric field intensity generated by the partial discharge and convert these changes into an electric signal;

[0033] The partial discharge monitoring module 2 also includes a signal conditioning circuit, and the signal output by the capacitive sensor and the high-frequency current sensor is usually a high-frequency analog signal, which needs to be conditioned and converted by an amplifier, a filter, and an analog-to-digital converter (ADC);

[0034] The partial discharge monitoring module 2 monitors the partial discharge phenomenon occurring inside the circuit breaker through the capacitive partial discharge sensor. The partial discharge sensor can sense the weak electric field change or current fluctuation in the electrical equipment, and convert the signal into a suitable voltage or current signal through the signal conditioning circuit. Then, these signals are transmitted to the intelligent control unit 3 for analysis. When the partial discharge signal exceeds the normal range, the system will issue a partial discharge fault alarm or trigger the corresponding protection mechanism.

[0035] In one example of the present application, the intelligent control unit 3 includes a microprocessor, an analog-to-digital converter, a memory, and a communication interface; the intelligent control unit 3 is the brain of the entire device, which is responsible for receiving, processing, and analyzing the data of the temperature and partial discharge sensors, making decisions, and controlling the action of the circuit breaker, and the ARM Cortex-M series microprocessor is generally selected;

[0036] The analog signal output by the sensor needs to be converted into a digital signal by an analog-to-digital converter for processing by the microprocessor, and the memory is used to store the program code of the system, historical data of the sensor, and fault diagnosis results, etc.

[0037] The communication interface is used for data exchange with external devices (such as a remote monitoring system or a control system);

[0038] The intelligent control unit 3 receives digital signals (converted by the analog-to-digital converter) from the temperature monitoring module 1 and the partial discharge monitoring module 2, which are input into the microprocessor, which determines the current device state according to a pre-set algorithm. If the temperature or partial discharge signal exceeds the pre-set safety threshold, the control unit will perform corresponding operations, such as issuing an alarm, disconnecting the circuit, or starting the backup power supply.

[0039] The microprocessor can also store data and analyze historical data based on real-time data to form a fault warning system. If the device has temperature or partial discharge abnormalities, the intelligent control unit 3 will interact with the remote control system through the communication interface to send real-time device status information.

[0040] As a preferred embodiment of the present application, the alarm and protection module further includes a relay or circuit breaker controller, an electromagnetic circuit breaker, an audible and visual alarm device including a buzzer and an LED display lamp, the buzzer is used to issue an audible alarm, and the LED display lamp is used to visually display the fault state.

[0041] The relay or circuit breaker controller is used to control the action of the circuit breaker when the intelligent control unit 3 detects temperature or partial discharge abnormalities, and performs disconnection or reset operations;

[0042] When a fault occurs, the electromagnetic circuit breaker is used to quickly cut off the power supply to protect the system from damage;

[0043] The alarm and protection module 4 receives instructions from the intelligent control unit 3, first starts the buzzer and LED display lamp for audible and visual alarm, and prompts the operator that there is a fault. When the control unit determines that the fault is serious, the relay controller will receive the signal and automatically disconnect the circuit to prevent further damage. The protection module can also be linked with other protection devices, such as starting the backup power supply, remote shutdown, etc.

[0044] As a preferred embodiment of the present application, the electrical connection module 5 includes connection terminals, wires, and a PCB board, wherein the connection terminals and wires are used to connect the electrical components in each module to ensure stable electrical signal transmission, and the connection terminals include screw terminals and spring terminals.

[0045] The PCB is used for integrating various components to form a complete circuit, and the design of the PCB needs to ensure stable signal transmission and anti-interference capability.

[0046] The electrical connection module 5 connects the temperature monitoring module 1, the partial discharge monitoring module 2, the intelligent control unit 3, the alarm and protection module 4 and other electrical components into a complete circuit system through wires, connection terminals and PCBs, ensuring smooth signal transmission between the modules and stable system operation.

[0047] The working principle of the utility model is as follows: all the driving elements, power elements, electrical components and the matched power supply are connected through the electrical connection module 5 at the idle place of the device, and the electrical components are sequentially connected, the detailed connection means is the known technology in the field, the working principle and process are mainly introduced below, and the electrical control is not described, the temperature monitoring module 1 obtains the contact temperature information in real time through the NTC thermistor and transmits the signal to the intelligent control unit 3, the intelligent control unit 3 judges whether the temperature is over standard according to the signal and responds, issues an alarm or disconnects the circuit, the partial discharge monitoring module 2 monitors the partial discharge in the electrical equipment and transmits the signal to the intelligent control unit 3, the intelligent control unit 3 analyzes the partial discharge signal strength, judges whether there is a fault and executes the protection measures according to the result, the intelligent control unit 3 judges whether there is a fault according to the signals from the temperature and partial discharge sensors, once a fault is found, the control unit issues an alarm signal and controls the alarm device to work, at the same time, the control unit triggers the relay or controller to execute the protection action (such as disconnecting the circuit).

[0048] The preferred embodiments of the application are described in detail above, but the application is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the purpose of the application.

Claims

1. A novel circuit breaker device with intelligent monitoring of contact temperature and partial discharge faults, characterized in that, It includes a temperature monitoring module (1), a partial discharge monitoring module (2), an intelligent control unit (3), an alarm and protection module (4), and an electrical connection module (5). The temperature monitoring module (1) includes a temperature sensor, which monitors the temperature of the circuit breaker contacts in real time. The partial discharge monitoring module (2) includes a partial discharge sensor, which monitors the partial discharge phenomenon inside the circuit breaker in real time. The intelligent control unit (3) is used to receive signals from the temperature sensor and the partial discharge sensor and perform data processing. The alarm and protection module (4) includes an audible and visual alarm device, which displays the equipment status and alarm information in real time. The electrical connection module (5) is responsible for connecting the circuit breaker with other equipment in the power system. The electrical connection module (5) uses high-quality electrical connection materials.

2. The novel circuit breaker device with intelligent monitoring of contact temperature and partial discharge fault according to claim 1, characterized in that, The temperature sensor includes a thermocouple, a thermistor, and an infrared temperature sensor. The thermistor includes an NTC thermistor and a PTC thermistor.

3. A novel circuit breaker device with intelligent monitoring of contact temperature and partial discharge faults according to claim 2, characterized in that, The temperature monitoring module (1) also includes a signal conditioning circuit, and the signal output by the temperature sensor needs to be conditioned and converted by the signal conditioning circuit.

4. A novel circuit breaker device with intelligent monitoring of contact temperature and partial discharge faults according to claim 3, characterized in that, The partial discharge sensor includes a capacitive sensor or a high-frequency current sensor, and the partial discharge monitoring module (2) also includes a signal conditioning circuit.

5. A novel circuit breaker device with intelligent monitoring of contact temperature and partial discharge faults according to claim 4, characterized in that, The intelligent control unit (3) includes a microprocessor, an analog-to-digital converter, a memory, and a communication interface; the microprocessor is selected from the ARM Cortex-M series.

6. A novel circuit breaker device with intelligent monitoring of contact temperature and partial discharge fault according to claim 5, characterized in that, The communication interface is used for data exchange with external devices.

7. A novel circuit breaker device with intelligent monitoring of contact temperature and partial discharge faults according to claim 6, characterized in that, The alarm and protection module also includes a relay or circuit breaker controller and an electromagnetic circuit breaker; the audible and visual alarm device includes a buzzer and an LED indicator.

8. A novel circuit breaker device with intelligent monitoring of contact temperature and partial discharge fault according to claim 7, characterized in that, The electrical connection module (5) includes connection terminals, wires, and a PCB board. The connection terminals and wires are used to connect the electrical components in each module.

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