CN203870199U - GIS lossless monitoring apparatus based on full-life management - Google Patents

Abstract

The utility model relates to the field of partial discharge detection of electric power equipment, in particular to a GIS non-destructive monitoring device based on full life management. The output terminals of the frequency partial discharge characteristic quantity acquisition module, the ultrasonic partial discharge characteristic quantity acquisition module and the UHF partial discharge characteristic quantity acquisition module are connected to the data processing module through the circuit switch, and the data processing module is connected to the display module. The utility model is simple and portable, and has a high degree of integration. It integrates two GIS partial discharge non-destructive detection methods, ultrasonic and UHF, and realizes two different signal detection through a circuit switch. The acquisition module shares a set of data processing module and display module, reducing the Circuit design and production, comprehensive analysis to determine the type of partial discharge and the position of the discharge point of GIS, two different methods complement each other to achieve better detection results.

Description

GIS non-destructive monitoring device based on life-cycle management

technical field

The utility model relates to the field of partial discharge detection of electric power equipment, in particular to a GIS non-destructive monitoring device based on full-life management. the

Background technique

Partial discharge in GIS will generate physical and chemical signals such as light, sound, mechanical vibration and electricity in and around GIS. Traditional GIS partial discharge detection methods generally only use a single detection method, and different defects exist in different The characteristic quantities of partial discharges in different development periods are also different, and a single detection technology cannot effectively detect partial discharge defects of different types and periods. the

Utility model content

In order to overcome the deficiencies in the above-mentioned technologies, the purpose of this utility model is to provide a GIS non-destructive monitoring device based on full-life management, which integrates two GIS partial discharge non-destructive detection methods, ultrasonic and ultra-high frequency, and comprehensively analyzes and judges the partial discharge of GIS. Depending on the type of discharge and the position of the discharge point, the two different methods complement each other to achieve better detection results. the

The technical scheme that the utility model adopts for solving its technical problem is:

In the GIS non-destructive monitoring device based on full-life management, the ultrasonic partial discharge detection module is connected to the ultrasonic partial discharge characteristic quantity acquisition module, the UHF partial discharge detection module is connected to the UHF partial discharge characteristic quantity acquisition module, and the ultrasonic partial discharge characteristic quantity acquisition module The module and the output end of the UHF partial discharge characteristic quantity acquisition module are connected to the data processing module through the circuit switch, and the data processing module is connected to the display module. the

When the utility model is used, the working state and working mode of the device are selected through the circuit conversion switch, the preferred circuit works in the ultrasonic partial discharge detection state, the ultrasonic signal detection data is displayed through the display module, and the detection personnel can initially judge through the peak value and distribution of the signal. No discharge and discharge type, then use the circuit switch to select the UHF partial discharge detection mode, use the detection signal to further analyze and judge the operating status of the GIS equipment, and realize the full life cycle management of the equipment. The data processing module can realize data storage and export , for further analysis. the

Preferably, the ultrasonic partial discharge detection module adopts an ultrasonic detection probe, and the ultrasonic partial discharge characteristic quantity acquisition module includes an emitter follower circuit, a voltage amplification circuit and a filter circuit, the ultrasonic detection probe is connected to the emitter follower circuit, the filter circuit is connected to a transfer switch, and the ultrasonic detection The probe converts the ultrasonic signal generated by the partial discharge of the GIS equipment into an electrical signal, and the ultrasonic partial discharge characteristic quantity acquisition module collects the electrical signal of the ultrasonic probe. In the actual working environment, there will inevitably be 50Hz power frequency interference and electromagnetic interference from live equipment. A filter circuit is set at the last stage of the ultrasonic partial discharge characteristic quantity acquisition module. the

Preferably, the UHF partial discharge detection module adopts a UHF partial discharge detection probe, and the UHF partial discharge characteristic quantity acquisition module includes an emission follower circuit, a voltage amplification circuit and a filter circuit, and the UHF partial discharge detection probe is connected to The emission follower circuit, the filter circuit are connected to the switch, and the UHF partial discharge detection probe converts the ultrasonic signal generated by the partial discharge of the GIS equipment into an electrical signal. The modules are the same. the

Preferably, the data processing module adopts a single-chip microcomputer STM32F103, which is a 32-bit embedded microprocessor based on the Cortex-M3 core, and it is an ARM without operating system. Compared with similar single-chip microcomputers, the STM32F103 has an industry-leading Cortex-M3 core, outstanding power consumption efficiency, rich peripherals, complete firmware library and rich sample programs. In addition, STM32 series MCU comes with 12-bit AD with 16 external channels, which has fast conversion speed and high precision. Meet the needs of GIS non-destructive monitoring. the

Preferably, the circuit conversion switch adopts a six-way rotary switch, the output terminals of the ultrasonic partial discharge characteristic quantity acquisition module and the UHF partial discharge characteristic quantity acquisition module are respectively connected to the two input terminals of the six-way rotary knob switch, and the six-way rotary knob switch The output terminal of the device is connected to the AD interface of the STM32F103 single-chip microcomputer, and the working state and working mode of the device are selected through the circuit switch, and the partial discharge signal detected by the device is transmitted to the data processing module. the

Preferably, the display module adopts a touch display screen, which is connected to the STM32F103 single-chip microcomputer through a data line, and the data line realizes data communication between the touch display screen and the data processing module, and displays the detection result of the device in real time. the

Preferably, the data line includes a data sending sub-line and a data receiving sub-line, and jumpers are respectively set on the data sending sub-line and the data receiving sub-line. In addition to communicating with the STM32F103 single-chip microcomputer, the touch screen also needs to be connected to a computer to realize its picture. Update and parameter setting, so set two jumpers to disconnect each other. the

Compared with the prior art, the utility model has the following beneficial effects:

The utility model is simple and portable, and has a high degree of integration. It integrates two GIS partial discharge non-destructive detection methods, ultrasonic and ultra-high frequency, and realizes two different signal detection and acquisition modules through a circuit switch to share a set of data processing modules and display modules. The circuit design and production are carried out, and the partial discharge type and the position of the discharge point of GIS are judged through comprehensive analysis. The two different methods complement each other to achieve better detection results. the

Description of drawings

Fig. 1 structural block diagram of the utility model. the

Figure 2 The connection circuit diagram of the single-chip microcomputer STM32F103 and the touch display screen. the

In the figure: 1. Six-way knob switch; 2. STM32F103 single-chip microcomputer; 3. Touch screen. the

Detailed ways

Below in conjunction with accompanying drawing, the utility model embodiment is further described:

As shown in Figures 1 and 2, the GIS non-destructive monitoring device based on full life management described in the utility model, the ultrasonic partial discharge detection module is connected to the ultrasonic partial discharge characteristic quantity acquisition module, and the UHF partial discharge detection module is connected to the UHF partial discharge The output terminals of the characteristic quantity acquisition module, the ultrasonic partial discharge characteristic quantity acquisition module and the UHF partial discharge characteristic quantity acquisition module are connected to the data processing module through the circuit switch, and the data processing module is connected to the display module. the

Among them, the ultrasonic partial discharge detection module adopts an ultrasonic detection probe. The ultrasonic partial discharge characteristic quantity acquisition module includes an emission follower circuit, a voltage amplification circuit and a filter circuit. The ultrasonic detection probe is connected to the emission follower circuit, and the filter circuit is connected to a switch. The ultrasonic signal generated by the partial discharge of the equipment is converted into an electrical signal, and the ultrasonic partial discharge characteristic quantity acquisition module collects the electrical signal of the ultrasonic probe, and the emission follower circuit can ensure the stability of the voltage signal of the ultrasonic detection probe, and then amplifies the collected electrical signal through the voltage amplification circuit , in the actual working environment, it is inevitable that there will be 50Hz power frequency interference and electromagnetic interference of live equipment. The filter circuit is set at the last stage of the ultrasonic partial discharge characteristic quantity acquisition module; the UHF partial discharge detection module adopts UHF local Discharge detection probe, UHF partial discharge characteristic quantity acquisition module includes emitter follower circuit, voltage amplification circuit and filter circuit, UHF partial discharge detection probe is connected to emitter follower circuit, filter circuit is connected to switch, UHF partial discharge detection probe The ultrasonic signal generated by the partial discharge of GIS equipment is converted into an electrical signal. The signal acquisition process of the UHF partial discharge characteristic quantity acquisition module is the same as that of the ultrasonic partial discharge characteristic quantity acquisition module; the data processing module adopts STM32F103 single-chip microcomputer 2, which is based on Cortex- 32-bit embedded microprocessor with M3 core, it is an ARM that does not require an operating system. In addition, the STM32 series MCU comes with 12-bit AD with 16 external channels, with fast conversion speed and high precision, meeting the needs of GIS non-destructive monitoring; the circuit conversion switch adopts six-way knob conversion switch 1, ultrasonic The output terminals of the partial discharge characteristic quantity acquisition module and the UHF partial discharge characteristic quantity acquisition module are respectively connected to the two input terminals of the six-way rotary switch 1, and the output terminal of the six-way rotary switch 1 is connected to the AD interface of the STM32F103 single-chip microcomputer 2, through the circuit The transfer switch selects the working state and working mode of the device, and transmits the partial discharge signal detected by the device to the data processing module; the display module adopts a touch screen 3, and the touch screen 3 is connected to the STM32F103 microcontroller 2 through a data line, and the data line realizes touch The data communication between the display screen 3 and the data processing module displays the detection results of the device in real time; the data line includes a data sending sub-line and a data receiving sub-line, and jumpers are respectively set on the data sending sub-line and the data receiving sub-line, and the touch display In addition to communicating with STM32F103 microcontroller 2, screen 3 also needs to be connected to a computer to update its picture and set parameters, so two jumpers are set to disconnect each other. the

When the utility model is used, the working state and working mode of the device are selected through the circuit conversion switch, the preferred circuit works in the ultrasonic partial discharge detection state, the ultrasonic signal detection data is displayed through the display module, and the detection personnel can initially judge through the peak value and distribution of the signal. No discharge and discharge type, then use the circuit switch to select the UHF partial discharge detection mode, use the detection signal to further analyze and judge the operating status of the GIS equipment, and realize the full life cycle management of the equipment. The data processing module can realize data storage and export , for further analysis. the

The utility model is simple and portable, and has a high degree of integration. It integrates two GIS partial discharge non-destructive detection methods, ultrasonic and ultra-high frequency, and realizes two different signal detection and acquisition modules through a circuit switch to share a set of data processing modules and display modules. The circuit design and production are carried out, and the partial discharge type and the position of the discharge point of GIS are judged through comprehensive analysis. The two different methods complement each other to achieve better detection results. the

Claims (7)

1. A GIS non-destructive monitoring device based on full-life management, characterized in that the ultrasonic partial discharge detection module is connected to the ultrasonic partial discharge characteristic quantity acquisition module, and the UHF partial discharge detection module is connected to the UHF partial discharge characteristic quantity acquisition module, The output ends of the ultrasonic partial discharge characteristic quantity acquisition module and the UHF partial discharge characteristic quantity acquisition module are connected to the data processing module through a circuit switch, and the data processing module is connected to the display module. 2. The GIS non-destructive monitoring device based on full-life management according to claim 1, wherein the ultrasonic partial discharge detection module adopts an ultrasonic detection probe, and the ultrasonic partial discharge characteristic quantity acquisition module includes an emission follower circuit and a voltage amplification circuit and a filter circuit, the ultrasonic detection probe is connected to the emitter follower circuit, and the filter circuit is connected to the transfer switch. 3. The GIS non-destructive monitoring device based on full-life management according to claim 1, wherein the UHF partial discharge detection module adopts a UHF partial discharge detection probe, and the UHF partial discharge characteristic quantity acquisition module It includes an emitter follower circuit, a voltage amplifying circuit and a filter circuit, the UHF partial discharge detection probe is connected to the emitter follower circuit, and the filter circuit is connected to a transfer switch. 4. The GIS non-destructive monitoring device based on life-cycle management according to claim 1, 2 or 3, characterized in that the data processing module adopts STM32F103 single-chip microcomputer (2). 5. The GIS non-destructive monitoring device based on life-cycle management according to claim 4, characterized in that, the circuit switch adopts a six-way knob switch (1), an ultrasonic partial discharge characteristic quantity acquisition module and a UHF partial discharge The output terminals of the characteristic quantity acquisition module are respectively connected to the two input terminals of the six-way rotary switch (1), and the output terminals of the six-way rotary switch (1) are connected to the AD interface of the STM32 single-chip microcomputer (2). 6. The GIS non-destructive monitoring device based on life-cycle management according to claim 4, characterized in that the display module adopts a touch screen (3), and the touch screen (3) communicates with the STM32 single-chip microcomputer (2) through a data line connected. 7. The GIS non-destructive monitoring device based on full-life management according to claim 6, wherein the data line includes a data sending sub-line and a data receiving sub-line, and the data sending sub-line and the data receiving sub-line are respectively set Jumper.