CN218470889U - Partial discharge and temperature monitoring device - Google Patents

Abstract

The utility model discloses a partial discharge and temperature monitoring device relates to detection device technical field. The partial discharge and temperature monitoring device comprises a main control module, a partial discharge detection module, a partial discharge alarm module, a charged detection module, a charged indication module and a temperature detection module; the main control module is respectively electrically connected with the partial discharge detection module, the partial discharge alarm module, the electrified detection module, the electrified indication module and the temperature detection module. According to the partial discharge and temperature monitoring device of the utility model, by arranging the partial discharge detection module and the charged detection module, the conditions of partial discharge and high voltage electrification in the equipment can be monitored in real time, and the feedback is made through the partial discharge alarm module and the charged indication module, so that the working personnel can know and process the fault information in time, and the conditions of equipment damage, safety accident and the like are avoided; and through setting up temperature detection module, can the inside line temperature of real-time detection equipment, prevent the high temperature.

Description

Partial discharge and temperature monitoring device

Technical Field

The utility model belongs to the technical field of detection device technique and specifically relates to a partial discharge and temperature monitoring device is related to.

Background

Primary switchgear such as looped netowrk cubical switchboard, cable branch case, box transformer when inside circuit fault, appear partial discharge, high voltage live, cable short circuit or ground connection phenomenon, cause equipment damage, cause incident etc. easily. Therefore, it is necessary to monitor these switching devices in real time, prevent the occurrence of partial discharge and high voltage electrification, and find and process the fault point in time.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a partial discharge and temperature monitoring devices can monitor partial discharge and high-voltage charged phenomenon to in time feed back.

According to the utility model discloses partial discharge and temperature monitoring device, include: a main control module; the partial discharge detection module is electrically connected with the main control module; the partial discharge alarm module is electrically connected with the main control module; the live detection module is electrically connected with the main control module; the electrification indicating module is electrically connected with the main control module; and the temperature detection module is electrically connected with the main control module.

According to the utility model discloses a some embodiments still include power module, power module respectively with host system with the detection module electricity is put in the office is connected.

According to some embodiments of the utility model, still include communication module, communication module with the host system electricity is connected.

According to the utility model discloses a some embodiments still include the USB module, the USB module with the host system electricity is connected.

According to the utility model discloses a some embodiments still include display module, display module with the host system electricity is connected.

According to some embodiments of the utility model, still include the button module, the button module with the host system electricity is connected.

According to some embodiments of the invention, further comprising at least one of: the operation indicator light is electrically connected with the main control module; the ground fault indicator lamp is electrically connected with the main control module; and the short-circuit fault indicator light is electrically connected with the main control module.

According to the utility model discloses partial discharge and temperature monitoring device has following beneficial effect at least: by arranging the partial discharge detection module and the electrified detection module, the conditions of partial discharge and high-voltage electrification in the equipment can be monitored in real time, and feedback is given through the partial discharge alarm module and the electrified indication module, so that working personnel can know fault information in time, insulation hidden dangers can be handled in time, and the conditions of equipment damage, safety accident and the like are avoided; and through setting up temperature detection module, can the inside line temperature of real-time detection equipment, prevent the high temperature.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a block diagram of a partial discharge and temperature monitoring device according to an embodiment of the present invention;

fig. 2 is a schematic circuit diagram of a first portion of a main control board according to an embodiment of the present invention;

fig. 3 is a schematic circuit structure diagram of a second portion of the main control board according to an embodiment of the present invention;

fig. 4 is a schematic circuit diagram of a third portion of the main control board according to an embodiment of the present invention;

fig. 5 is a schematic circuit structure diagram of a fourth part on the main control board according to the embodiment of the present invention;

fig. 6 is a schematic circuit structure diagram of a fifth part of the main control board according to an embodiment of the present invention;

fig. 7 is a schematic circuit diagram of a first portion of a display panel according to an embodiment of the present invention;

fig. 8 is a schematic circuit diagram of a second portion of the display panel according to the embodiment of the present invention;

fig. 9 is a schematic diagram of a circuit structure on the power board according to an embodiment of the present invention;

reference numerals:

the system comprises a main control module 100, a partial discharge detection module 200, an analog-to-digital conversion unit 210, an amplification unit 220, a partial discharge alarm module 300, a live detection module 400, a live indication module 500, a power supply module 600, a switch control module 700, a communication isolation unit 810, a communication output unit 820, a USB module 900, a display module 1000 and a key module 1100.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the terms such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the terms in the present invention by combining the specific contents of the technical solution.

According to the utility model discloses partial discharge and temperature monitoring device, its inside circuit sets up on three circuit boards totally, is main control board, display panel and power strip respectively. Among them, fig. 2 to 6 are circuits provided on the main control board, fig. 7 and 8 are circuits provided on the display panel, and fig. 9 is a circuit provided on the power supply board. As shown in fig. 6 and 7, the main control board and the display panel are connected through a 25PIN FPC line (i.e., P1); as shown in fig. 3 and 9, the main control board and the power board are connected through a 10PIN FPC line (i.e., H1).

As shown in fig. 1, the partial discharge and temperature monitoring device according to the embodiment of the present invention comprises a main control module 100, a partial discharge detection module 200, a partial discharge alarm module 300, a live detection module 400, a live indication module 500, and a temperature detection module (not shown); the main control module 100 is respectively electrically connected with the partial discharge detection module 200, the partial discharge alarm module 300, the electrified detection module 400, the electrified indication module 500 and the temperature detection module; the main control module 100 controls the working state of the partial discharge alarm module 300 according to the detection result of the partial discharge detection module 200; the main control module 100 controls the working state of the charging indication module 500 according to the detection result of the charging detection module 400.

Specifically, in some embodiments of the present invention, the main control module 100, the partial discharge detection module 200, and the live detection module 400 are all disposed on the main control board, and the partial discharge alarm module 300 and the live indication module 500 are all disposed on the display board. As shown in fig. 2, the master control module 100 includes an MCU of model STM32F405 (other models may be used) and its peripheral circuits. As shown in fig. 3 and 4, the partial discharge detection module 200 includes an analog-to-digital unit 210 and an amplifying unit 220; the analog-to-digital conversion unit 210 is configured to convert an analog signal detected by the partial discharge sensor into a digital signal, send the digital signal to the amplification unit 220 for amplification, and send the amplified digital signal to the main control module 100. Specifically, as shown in fig. 3, a dual-channel ADC conversion chip (which may also be of another type) with a type AD8066ARZ-R7 is used in the analog-to-digital unit 210 to convert the analog signal into a digital signal, and VOUT1 is a digital signal output. As shown in fig. 4, the amplifying unit 220 adopts a programmable gain amplifier (which may also adopt other types) with a type of THS7001C, and the digital signal output by VOUT1 is amplified by the programmable gain amplifier and then sent to the MCU in the main control module 100. After the local discharge detection module 200 detects the local discharge signal, the main control module 100 controls the local discharge alarm module 300 to perform an alarm operation. As shown in fig. 8, the partial discharge alarm module 300 is disposed on the display panel, in the embodiment of the present invention, the partial discharge alarm module 300 employs light emitting diodes LED _ RGB, and the partial discharge alarm module 300 controls light emitting diodes with different colors to emit light according to the magnitude of the partial discharge signal; for example, when the local discharge signal is small, the main control module 100 provides the LG signal line with a high level, at this time, the triode Q18 is turned on, and the voltage VCC supplies power to the green light emitting diode through the current limiting resistors R105 and R106, so that the green light emitting diode emits green light; similarly, when the local discharge signal is large and reaches the warning or alarming state, the main control module 100 provides a high level to the LY signal line or the LR signal line, so that the yellow led emits yellow light or the red led emits red light. In a specific application, the main control module 100 may set different thresholds so as to emit lights of different colors under different conditions to remind a worker to perform an inspection. It is understood that the partial discharge alarm module 300 may also use a buzzer, an audible and visual alarm, etc. to alarm.

As shown in fig. 5, the electrification detecting module 400 is disposed on the main control board, and the electrification detecting module 400 is used for detecting whether there is a high-voltage electrification inside the switchgear. Wherein, R2, R3 and R5 are discharge tubes, and form a static and surge protection circuit with piezoresistors R1, R4 and R6; when the charged sensor detects a charged condition, the LA, LB, or LC signal line outputs a high level to the main control module 100, so that the main control module 100 controls the charged indication module 500 to send a prompt. As shown in fig. 7, the charging indication module 500 is provided on the display panel, and the charging indication module 500 includes charging indication lamps D70, D71, and D72; when the LA, LB or LC signal line of the live detection module 400 sends a high level, the main control module 100 controls the corresponding indicator light on the live indication module 500 to emit light, and since the live signals output by the LA, LB or LC signal line of the live indication module 500 are alternating current, the D70, D71 and D72 will flash and emit light according to the output frequency, thereby reminding the staff to check. It is understood that the charging indication module 500 may also use a buzzer, an audible and visual alarm, etc. for reminding.

The temperature detection module can adopt a temperature sensor to detect the line temperature and display the temperature value on the display module 1000 in real time, so that the temperature of the equipment is monitored in real time, and overhigh temperature is prevented.

According to the partial discharge and temperature monitoring device provided by the embodiment of the utility model, by arranging the partial discharge detection module 200 and the charged detection module 400, the partial discharge and high-voltage charged conditions can be monitored in real time, and the alarm module 300 and the charged indication module 500 are arranged for alarming, so that the working personnel can know the fault information in time, the existing insulation hidden danger can be processed in time, and the conditions of equipment damage, safety accident and the like are avoided; and through setting up temperature detection module, can the inside line temperature of real-time detection equipment, prevent the high temperature.

As shown in fig. 9, according to the embodiment of the present invention, the partial discharge and temperature monitoring device further includes a power supply module 600, the power supply module 600 is respectively electrically connected to the main control module 100 and the local discharge detection module 200, and provides a working power supply for the main control module 100 and the local discharge detection module 200.

Specifically, as shown in fig. 9, the power supply module 600 is disposed on a power board, the power board is connected to the main control board through a 10PIN H1, and the power board provides a working power supply for the main control board. The power supply module 600 is connected with an alternating current power grid, an alternating current power supply passes through a fuse F1, electromagnetic interference is filtered out through an EMC filter BT1 (the specific model is FX-LX 1D), the alternating current power supply is converted into a direct current power supply through an AC-DC converter U1 (the specific model is LDE05-20B 05), and a +5V direct current voltage is output after filtering; meanwhile, the +5V DC voltage is converted into-5V voltage by an inverting regulator U3 (specific model LT1931ES 5). Finally, the power supply module 600 outputs +5V and-5V to power the main control board.

As shown in fig. 9, according to the utility model discloses partial discharge and temperature monitoring device, still include switch control module 700, switch control module 700 is connected with host system 100 electricity, and host system 100 passes through the switch of switch control module 700 control cabinet door.

Specifically, as shown in fig. 9, the switch control module 700 is disposed on the power panel, and the switch control module 700 controls the opening and closing of the cabinet door of the power distribution room by using the relays K1 and K2. As shown in fig. 5, when the electrification detecting module 400 detects an electrification condition, the gate of the transistor Q3 is at a high level, the transistor Q3 is turned on, so that the photocoupler U15 is turned on, and the PC1 signal is changed from a high level to a low level; when the main control module 100 receives that the PC1 is at a low level, KO0 and KO2 are output as a high level, and when KO0 and KO2 are at a high level, the photocouplers U2 and U4 in fig. 9 are turned on, so that the relays K1 and K2 control the cabinet door to be closed. Meanwhile, as shown in fig. 8, the main control module 100 controls the locking lamp D80 to emit light through the LED-D6 signal line. That is to say, when electrified detection module 400 detected the electrified condition, can close the cabinet door through on-off control module 700 to light shutting lamp D80, thereby avoid causing the incident, and in time remind the staff to inspect the electrified condition, eliminate the potential safety hazard.

According to the utility model discloses partial discharge and temperature monitoring device still includes communication module, and communication module is connected with the 100 electricity of host system, and host system 100 passes through communication module and supervisory equipment communication. The main control module 100 may send the acquired fault information to a server of the monitoring center through the communication module, and display the fault information and the location of the fault point on the monitoring device.

Specifically, as shown in fig. 6 and 9, the communication module adopts an RS485 communication mode, and includes a communication isolation unit 810 and a communication output unit 820. As shown in fig. 6, the communication isolation unit 810 is disposed on the main control board, and an RS485 isolation data transceiver with a model number ADM2587EBRWZ is adopted to perform a signal isolation function; as shown in fig. 9, a communication output unit 820 is provided on the power board as an output portion of the RS485 circuit. The thermistors RT1 and RT2 are protection elements, and when the current flowing into the A phase and the B phase is increased, the resistance values of the thermistors RT1 and RT2 become large, so that subsequent circuits and chips are protected from being damaged by large current. The TVS tubes T1, T2 and T3 are used for performing rapid overvoltage protection on circuit elements and absorbing surge signals with power up to thousands of watts. It can be understood that, in addition to the RS485 communication method, the communication module may also adopt other common communication methods, such as RS 232.

As shown in fig. 5, the partial discharge and temperature monitoring device according to the embodiment of the present invention further includes a USB module 900, and the USB module 900 is electrically connected to the main control module 100. Specifically, the USB module 900 is arranged on the main control board, and adopts a USB driver chip (or other types) with a model number of UPD720114 GA-YEU-a; by setting the USB module 900, it is convenient to program or subsequently update the program to the main control module 100 through the USB port. The USB module 900 further employs an ESD diode with a model SRV05-4-P-t7, which plays a role in anti-static protection for the USB interface.

As shown in fig. 8, the partial discharge and temperature monitoring device according to the embodiment of the present invention further includes a display module 1000, and the display module 1000 is electrically connected to the main control module 100. Specifically, the display module 1000 is disposed on the display panel, the display module 1000 employs a display screen LCD, serial communication is employed between the display screen LCD and the main control module 100, SDA is data transmission, SCL is clock signal transmission, RST is reset signal; various data, detection information, failure information, and the like are displayed through the display screen LCD.

As shown in fig. 7, according to the embodiment of the present invention, the partial discharge and temperature monitoring device further includes a key module 1100, the key module 1100 is electrically connected to the main control module 100, and the main control module 100 adjusts the display content of the display module 1000 through the key module 1100. Specifically, the key module 1100 is disposed on the display panel, and includes key switches SW1, SW2, SW3, and SW4; when the display module 1000 is not in operation, the signals of the key switches SW1, SW2, SW3 and SW4 are at a high level, and when a corresponding key is pressed, the corresponding signal changes from the high level to a low level to generate a corresponding command, thereby selecting a display menu of the display module 1000.

According to the utility model discloses partial discharge and temperature monitoring device still includes at least one of operation pilot lamp, ground fault pilot lamp and short-circuit fault pilot lamp, and operation pilot lamp, ground fault pilot lamp and short-circuit fault pilot lamp are connected with host system 100 electricity. As shown in fig. 8, the operation indicator lamp, the ground fault indicator lamp and the short-circuit fault indicator lamp are disposed on the display panel, and when the device normally operates, the main control module 100 controls the operation indicator lamp D79 to emit light; d76, D77 and D78 are three-phase short-circuit fault indicator lamps, and when the short-circuit fault sensor detects that the line current reaches or exceeds a preset threshold value of short-circuit current, the main control module 100 controls the corresponding short-circuit fault indicator lamp to emit light; d81 is a ground fault indicator, and when the ground fault sensor detects that the line current reaches or exceeds a preset threshold value of the ground current, the main control module 100 controls the ground fault indicator D81 to emit light. Through setting up operation pilot lamp, earth fault pilot lamp and short-circuit fault pilot lamp, the state of accurate instruction circuit to the location fault point, so that the staff can in time discover and handle fault information.

In the description herein, references to the description of the term "one embodiment," "a further embodiment," "some specific embodiments," or "some examples," etc., mean that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (7)

1. A partial discharge and temperature monitoring device, comprising:

a main control module;

the partial discharge detection module is electrically connected with the main control module;

the partial discharge alarm module is electrically connected with the main control module;

the live detection module is electrically connected with the main control module;

the live indication module is electrically connected with the main control module;

and the temperature detection module is electrically connected with the main control module.

2. The partial discharge and temperature monitoring device according to claim 1, further comprising a power supply module electrically connected to the main control module and the partial discharge detection module, respectively.

3. The partial discharge and temperature monitoring device of claim 1, further comprising a communication module electrically connected to the main control module.

4. The partial discharge and temperature monitoring device of claim 1, further comprising a USB module electrically connected to the master control module.

5. The partial discharge and temperature monitoring device of claim 1, further comprising a display module electrically connected to the master control module.

6. The partial discharge and temperature monitoring device of claim 5, further comprising a key module electrically connected to the main control module.

7. The partial discharge and temperature monitoring device of claim 1, further comprising at least one of:

the operation indicator light is electrically connected with the main control module;

the ground fault indicator lamp is electrically connected with the main control module;

and the short-circuit fault indicator light is electrically connected with the main control module.

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