CN214796141U

CN214796141U - Power distribution cabinet power monitoring device

Info

Publication number: CN214796141U
Application number: CN202120855411.4U
Authority: CN
Inventors: 费天兰
Original assignee: Zhongxun Boer Intelligent Technology Wuxi Co ltd
Current assignee: Zhongxun Boer Intelligent Technology Wuxi Co ltd
Priority date: 2020-09-07
Filing date: 2021-04-25
Publication date: 2021-11-19
Anticipated expiration: 2031-04-25

Abstract

The utility model discloses a switch board power monitoring devices, it includes voltage transformer, current transformer, electric leakage transformer, electric energy metering module, temperature sensor, smoke transducer, magnetism isolation ADC, treater, power module, clock module and output module. The utility model discloses can monitor the electric energy measurement parameter in switch board return circuit, can monitor distribution circuit's temperature and smog state simultaneously, possess power consumption return circuit monitoring alarming function and traditional electric fire control medium temperature alarm and smog detection function such as excessive pressure, under-voltage, overflow, overload, monitoring devices possesses the demonstration simultaneously, communication and control output function, realize data and status inquiry, functions such as transmission and linkage alarm output, electric power monitoring performance is perfect reliable.

Description

Power distribution cabinet power monitoring device

Technical Field

The utility model belongs to the technical field of supply and distribution, particularly, relate to a switch board electric power monitoring devices.

Background

The switch board has extensive application in the power supply and distribution field, is one of the important component, installs various distribution components in the switch board, if circuit breaker switch, female arranging, cable, intelligent instrument, mutual-inductor, temperature and humidity sensor, signal lamp, wire casing etc. various components pass through cable, bus etc. and connect, and the interior components and parts of switch board are many, the installation is compact, the operation is frequent, electrified on-load operation etc. takes place electric fire hidden danger in the switch board big, so it is very necessary to strengthen the interior electric fire protection of switch board.

The traditional technical scheme is that an electric fire monitoring detector is installed at present and used for monitoring electric leakage and temperature of a power distribution loop to achieve electric fire early warning and electric fire protection based on the electric leakage and the temperature. But only can early warn the leakage of a power supply loop and the local point type temperature in the power distribution cabinet is not comprehensive enough; in addition, a scheme of installing a smoke detector in the power distribution cabinet is provided, the detectors need to be networked, the complexity and the cost of the system are increased, and the traditional smoke detector is slow in early warning timeliness of fire hazard of an electric circuit.

Disclosure of Invention

To the problem that switch board power parameter monitoring system that prior art exists is complicated, with high costs, the early warning is slow, the utility model provides a highly integrated switch board power monitoring device.

In order to realize the technical purpose, the utility model discloses a technical scheme as follows:

a power distribution cabinet power monitoring device comprising:

the voltage transformer is used for monitoring a voltage signal in the power distribution cabinet;

the current transformer is used for monitoring a current signal in the power distribution cabinet;

the leakage transformer is used for monitoring a leakage current signal in the power distribution cabinet;

the electric energy metering module is used for processing signals output by the voltage transformer, the current transformer and the current transformer;

the temperature sensor is used for monitoring a temperature signal of the power distribution cabinet;

a magnetic isolation ADC for converting an analog signal output by the temperature sensor into a digital signal;

the smoke sensor is used for detecting smoke signals in the power distribution cabinet;

the processor is used for processing signals output by the electric energy metering module, the magnetic isolation ADC and the smoke sensor;

a power module for providing power to the processor;

a clock module for providing a clock signal to the processor;

and the output module is used for controlling the display and transmission of the output signal of the processor.

Further defined, the output module includes:

the display module is used for displaying the parameters output after the processing of the processor;

the interaction module is used for controlling the display and transmission mode of the processor;

a communication module for transmitting or receiving data.

Further, the voltage transformer is HPT205NBJ, the current transformer is HCT226HJZ-2, and the leakage transformer is CTZ 06.

Further defined, the electric energy metering module employs ADE 7880.

Further, the temperature sensor is of a type MS2-401G 104H-1000G.

Further defined, the processor employs MKS22Z128VLH 12.

Further, the display module adopts an FSTN type graphic LCD module LM192160 ACM.

The utility model provides a switch board electric power monitoring devices can monitor the electric energy measurement parameter in switch board return circuit, can monitor the temperature and the smog state in distribution return circuit simultaneously, possess the excessive pressure, under-voltage, overflow, power consumption return circuit monitoring alarming function such as overload, and temperature alarm and smog detection function in traditional electrical fire control, monitoring devices possesses the demonstration simultaneously, communication and control output function, realize data and state inquiry, functions such as transmission and linkage alarm output, electric power monitoring performance is perfect reliable.

Drawings

Fig. 1 is a schematic diagram of a module structure of a power monitoring device of a power distribution cabinet according to the present application;

FIG. 2 is a circuit diagram of a processor;

FIG. 3 is a circuit diagram of an interaction module;

FIG. 4 is a circuit diagram of a power module;

FIG. 5 is a circuit diagram of a display module;

FIG. 6 is a circuit diagram of a voltage transformer;

FIG. 7 is a circuit diagram of a current transformer;

FIG. 8 is a circuit diagram of a leakage transformer;

FIG. 9 is a circuit diagram of an electric energy metering module;

FIG. 10 is a circuit diagram of a temperature sensor;

FIG. 11 is a circuit diagram of a smoke sensor;

FIG. 12 is a circuit diagram of a clock module;

fig. 13 is a circuit diagram of a communication module.

The notation in the figure is: the system comprises a voltage transformer 1, a current transformer 2, a leakage transformer 3, an electric energy metering module 4, a temperature sensor 5, a smoke sensor 6, a magnetic isolation ADC7, a processor 8, a power supply module 9, a display module 10, an interaction module 11, a communication module 12 and a clock module 13.

Detailed Description

In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.

As shown in fig. 1 to 13, a power distribution cabinet power monitoring device includes a voltage transformer 1, a current transformer 2, a leakage transformer 3, an electric energy metering module 4, a temperature sensor 5, a smoke sensor 6, a magnetic isolation ADC7, a processor 8, a power supply module 9, a clock module 13, and an output module.

The voltage transformer 1, the current transformer 2 and the leakage transformer 3 are respectively used for monitoring voltage, current and leakage circuit signals in the power distribution cabinet and are used for early warning the situations of overvoltage, undervoltage, overcurrent, overload and the like of a power circuit of the power distribution cabinet.

The electric energy metering module 4 is used for converting signals output by the voltage transformer 1, the current transformer 2 and the current transformer 2, and then outputting the signals to the processor 8 for processing.

Temperature sensor 5 is used for monitoring the temperature signal of switch board, and smoke transducer 6 is used for surveying the smoke signal in the switch board, and temperature sensor 5 and the cooperation of smoke transducer 6 can prevent to appear high temperature in the switch board or have smog to lead to the condition that the conflagration takes place.

The magnetic isolation ADC7 converts the analog signal from the temperature sensor 5 to a digital signal and sends it to the processor 8, while the smoke sensor 6 detects a smoke signal and outputs a smoke signal having both a smoke detected state and a smoke not detected state, so that the output of the smoke sensor 6 can be connected directly to the processor 8 without analog-to-digital conversion.

The processor 8 processes the signals output by the power metering module 4, the magnetic isolation ADC7 and the smoke sensor 6, and then outputs the signals through the output module.

The power module 9 is used for providing power for the processor 8, and the clock module 13 is used for matching with an external crystal to realize an oscillating circuit and providing a running clock signal for the singlechip processor 8.

Specifically, the output module includes a display module 10, an interaction module 11 and a communication module 12, and the display module 10 may be used for displaying or reflecting parameters processed by the processor 8, such as temperature or warning signal lights.

The interactive module 11 is equivalent to a control module, and can set a system display or transmission mode, for example, set the working state of the early warning signal lamp in different states, the interval of data signal transmission, even reset the system, etc., and the interactive module 11 can complete control operation by developing a man-machine interactive interface, and integrates screen display and manual input.

The communication module 12 is used for transmitting data, and may adopt a communication method such as 2G/3G/4G/5G, and the communication module 12 may also be used for receiving a control signal of a terminal.

In more detail, as shown in fig. 6 to 8, the voltage transformer 1 adopts HPT205NBJ, 2mA/2mA, the precision is 0.1%, the linearity is 0.1%, the isolation withstand voltage is 4000V, and the compensation angular difference is 5'; the current transformer 2 adopts HCT226HJZ-2, 5A/2.5mA, the precision is 0.05%, the linearity is 0.05%, and the phase change is 6'; the leakage transformer 3 adopts CTZ06, 2000:1, the precision is 1%, the linearity is 1%, and the requirements of balance and 1000A impulse current tests are met.

As shown in fig. 9, the electric energy metering module 4 adopts ADE7880, and the 7-way 24-bit adc collects analog signals of the voltage transformer 1, the current transformer 2 and the leakage transformer 3, so as to realize high-precision measurement of voltage, current and leakage, and meet the 0.2S electric energy metering precision, and the electric energy metering module 4 is connected to the processor 8 through the SPI.

As shown in FIG. 10, the temperature sensor 5 is composed of MS2-401G104H-1000G, which are input to ADS1018 high-precision analog chips through a resistance voltage division network, and is connected to the processor 8 through an SPI bus.

As shown in fig. 11, the smoke sensor 6 adopts an ADPD188BI chipset scheme, integrates 2 different wavelength reflection monitoring, ensures the accuracy, reliability and quick response of smoke detection, can accurately identify high-temperature pyrolysis particles of insulating rubber materials emitted by heating of cables of a power distribution cabinet, and is connected to the processor 8 through an IIC interface.

As shown in fig. 2, the processor 8 selects MKS22Z128VLH12, which adopts 120MHz dominant frequency of the Crotex-M4 kernel, integrates 128kRAM, 1MBFlash and FPU operation units, reads data such as voltage, current and electric leakage of the electric energy metering module 4 through SPI and IIC interfaces, reads smoke particle concentration data of the ADPD188BI smoke sensor 6, reads resistance data of the ADS1018 chip temperature sensor 5, processes and calculates input data, and outputs a result or an alarm signal.

As shown in fig. 4, the power module 9 adopts a technical solution based on an integrated circuit TNY276N, and the switching transformer of the EE19 framework has four isolation loops, outputs four isolated power supplies, and supplies power to the processor 8, the electric energy metering module 4, the smoke sensor 6, the communication module 12, and other devices.

As shown in fig. 5, the display module 10 employs an FSTN type graphic LCD module LM192160ACM with LED backlight control and 4 touch buttons, connected to the processor 8 through parallel port and I/O port.

As shown in fig. 3, the interactive module 11 is partially composed of a driver chip SN74AHC1G04DCKR and a relay MYAA005D, and is controlled by a general IO of the processor 8.

As shown in fig. 13, the communication module 12 is composed of a double-optical-coupling TLP185(GB, SE) and an integrated circuit MAX13085E, and the processor 8 implements operations of data transmission, alarm transmission, parameter configuration and control with an external intelligent system through the communication module 12.

As shown in fig. 12, the clock module 13 is composed of an RX8025 and a backup battery, and is used for the processor 8 to obtain real-time, and the backup battery ensures that the real-time is not lost for 5 years when the power supply module 9 is powered off.

The power distribution cabinet power monitoring device provided by the application has the functions of power quality monitoring, leakage monitoring, temperature monitoring and smoke monitoring. The smog monitoring function adopts and is based on ADPD188BI technical scheme, and dual wavelength reflection monitoring possesses high accuracy, high reliable characteristic, can not only monitor traditional smog, does not receive the humid gas influence, can also monitor the high temperature pyrolysis particle that the cable insulating layer distributes out under the high temperature condition in the switch board, and when the device monitored unusual alarms such as electric quantity, electric fire, pyrolysis particle, can output acousto-optic warning and linkage alarm signal.

The above power distribution cabinet power monitoring device provided by the application is introduced in detail. The description of the specific embodiments is only intended to facilitate an understanding of the methods of the present application and their core concepts. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.

Claims

1. A power distribution cabinet power monitoring device is characterized by comprising:

a power module for providing power to the processor;

a clock module for providing a clock signal to the processor;

2. The power distribution cabinet power monitoring device according to claim 1, wherein the output module comprises:

a communication module for transmitting or receiving data.

3. The power distribution cabinet power monitoring device according to claim 1, wherein the voltage transformer is HPT205NBJ, the current transformer is HCT226HJZ-2, and the leakage transformer is CTZ 06.

4. The power distribution cabinet power monitoring device according to claim 1, wherein the electric energy metering module employs ADE 7880.

5. The power distribution cabinet power monitoring device of claim 1, wherein the temperature sensor is of a type MS2-401G 104H-1000G.

6. The cabinet power monitoring apparatus of claim 1, wherein the processor employs MKS22Z128VLH 12.

7. The power distribution cabinet power monitoring device according to claim 2, wherein the display module employs an FSTN type graphic LCD module LM192160 ACM.