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Electrical equipment hidden danger monitoring system and working method thereof

A technology of electrical equipment and monitoring system, applied in the direction of overhead line/cable equipment, electrical components, measuring electricity, etc., can solve the problems of single power-taking mode, electric field signal interference, large power dissipation of interference suppression circuit, etc., and achieve anti-interference The effect of strong ability and high reliability

Active Publication Date: 2020-01-07
GAUSS ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the hidden danger monitoring of electrical equipment mainly has the following problems: (1) Some key characteristic quantities such as vibration belong to relatively high-frequency signals, so modules that require high-speed acquisition consume a lot of power, and power supply requires laying dedicated lines or considering dedicated power supply equipment; 2) There are technical bottlenecks in outdoor power acquisition, mainly because of the single mode of power acquisition, either through the induction current of the transmission line or through the battery, although a few also adopt photovoltaic power, but the integration with the monitoring system has high temperature and low power generation Therefore, the technical challenges of directly using high-power photovoltaics to supply power to high-power monitoring units are still not small; (3) Especially in the field of power equipment safety, the interference of electric field signals is serious, and the power dissipation of interference suppression circuits is large, requiring a wider signal bandwidth, in order to obtain enough data for processing in the background; (4) the current sensor module does not have some special independent management functions, such as the need for dust removal, dust prevention, deicing, etc., generally requires a large energy drive and control module

Method used

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  • Electrical equipment hidden danger monitoring system and working method thereof
  • Electrical equipment hidden danger monitoring system and working method thereof
  • Electrical equipment hidden danger monitoring system and working method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as figure 1 shown. A hidden danger monitoring system for electrical equipment is prepared for online monitoring and treatment of top insulators of transmission line towers. The hidden danger monitoring system includes a sensing device placed on the insulator base at the top of the power transmission line tower or a porcelain bottle in the middle, and a collection device placed on the ground and connected to the sensing device in a wireless manner.

[0033] The sensing device includes an overvoltage protector to prevent overvoltage from damaging the sensing device, a vibration sensor, an electric field sensor, a capacitance sensor, a temperature sensor, an optical sensor, a gas sensor and a chromatographic sensor connected in parallel with the overvoltage protector, Transmitting module, operation and maintenance diagnosis module, driving circuit, piezoelectric ceramic transducers, ultrasonic transducers, electrostatic generators and infrared wave generators connect...

Embodiment 2

[0047] Such as figure 1 , figure 2 , image 3 shown. The same place as Embodiment 1 will not be repeated, the difference is:

[0048] The central operating frequency of the surface acoustic wave sensor is 433Mz, and the bandwidth is plus or minus 20MHz. It is composed of two surface acoustic wave sub-sensors connected in parallel; The bottom, the input electrode and the output electrode are above the substrate; the electromagnetic wave receiving antenna is arranged in front of the input electrode, and the high frequency signal transmitting antenna is arranged behind the output electrode, and the electromagnetic wave receiving antenna and the high frequency signal transmitting antenna are microcoils. The purpose of using two SAW sub-sensors in parallel is to place the SAW sensing band of one SAW sensor on the outermost side of the substrate, and the other on the other side, so that the two sensors can pass differential output , to filter out the influence of temperature ch...

Embodiment 3

[0053] The same places as in Embodiment 1 will not be repeated, the difference is that the sensing device is installed on the 220kV power transmission overhead line.

[0054] Overhead lines are affected by pollutants, with more visible dirt and chemical deposits on the stranded metal wires. The phase-to-phase insulation of the three-phase voltage has changed; the accumulation produces an abnormal ultrasonic signal under the action of the working current of the transmission line and the phase-to-phase electric field of the three-phase voltage; the discharge voltage signal induced by the output terminal of the capacitive sensor is enhanced, and the operation and maintenance diagnosis module passes The vibration sensor senses the starting signal, drives the ultrasonic transducer to emit ultrasonic signals, and drives the electrostatic generator to emit high-voltage electrostatic signals. The particles and dirt deposited on the surface of the overhead line are under the action of ...

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Abstract

The invention discloses an electrical equipment hidden danger monitoring system and a working method thereof. The system comprises a sensing device arranged on monitored electrical equipment, and an acquisition device which is away from the monitored electrical equipment and is connected with the sensing device in a wireless or wired manner. The sensing device comprises an overvoltage protector, avibration sensor, an electric field sensor, a capacitance sensor, a temperature sensor, a transmitting module, an operation and maintenance diagnosis module, a driving circuit, a piezoelectric ceramic transducer, an ultrasonic transducer, an electrostatic generator, an infrared wave generator, a vibrator and an energy taking module, wherein the vibration sensor, the electric field sensor, the capacitance sensor and the temperature sensor are connected with the overvoltage protector in parallel; and the piezoelectric ceramic transducer, the ultrasonic transducer, the electrostatic generator and the infrared wave generator are connected in parallel. The acquisition device comprises a receiving antenna, an analog-to-digital converter, a microprocessor and a communication module which are connected in sequence. Compared with the prior art, the system integrates sensing monitoring, self energy taking and treatment functions, and is convenient to use in a special monitoring area.

Description

technical field [0001] The invention relates to a hidden danger monitoring system for electrical equipment, in particular to a hidden danger monitoring system for electrical equipment integrating sensing monitoring, self-energy acquisition and treatment functions and a working method thereof. Background technique [0002] At present, the hidden danger monitoring of electrical equipment mainly has the following problems: (1) Some key characteristic quantities such as vibration belong to relatively high frequency signals, so modules that require high-speed acquisition consume a lot of power, and power supply requires laying dedicated lines or considering dedicated power supply equipment; 2) There are technical bottlenecks in outdoor power collection, mainly because of a single power collection mode, either through the induction current of the transmission line or through the battery for power supply, although a few also use photovoltaic power collection, but the integration wit...

Claims

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Application Information

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IPC IPC(8): H02J13/00H02G1/02G01R31/00G01D21/02H02N2/18H02J50/05H02J50/10H02S10/10
CPCH02G1/02G01R31/00G01D21/02H02N2/186H02J50/05H02J50/10H02S10/10Y02E10/50
Inventor 张建尹娟
Owner GAUSS ELECTRONICS TECH