Insulation online state monitoring device of zinc oxide arrester

A state monitoring device and lightning arrester technology, which is applied in the direction of measuring devices, instruments, measuring electricity, etc.

Inactive Publication Date: 2014-12-03
HUAINAN POWER SUPPLY CO OF STATE GRID ANHUI ELECTRIC POWER CORPORATIO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The compensation method compensates the resistive current component of the arrester by adding capacitive current, but it can only reflect the real result of arrester aging when the resistive current and the capacitive current have a phase difference of π / 2

Method used

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  • Insulation online state monitoring device of zinc oxide arrester
  • Insulation online state monitoring device of zinc oxide arrester
  • Insulation online state monitoring device of zinc oxide arrester

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Embodiment Construction

[0054] See attached Figure 1 ~ Figure 6 , The insulation online state monitoring device of the zinc oxide arrester of the present invention includes a temperature and humidity sensor, a composite monitoring sensor, and a monitoring terminal; the temperature and humidity sensor and the composite monitoring sensor are all connected to the monitoring terminal; the monitoring terminal includes a central Control circuit, power supply circuit, signal acquisition circuit, AD conversion circuit, alarm drive circuit, buzzer and monitoring status identification module;

[0055] The power supply circuit, the AD conversion circuit, the alarm drive circuit, and the monitoring state identification module are all connected to the central control circuit; the signal acquisition circuit is connected to the central control circuit through the AD conversion circuit; the bee The buzzer is connected to the central control circuit through the alarm drive circuit;

[0056] The signal acquisition circui...

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Abstract

The invention discloses an insulation online state monitoring device of a zinc oxide arrester. The insulation online state monitoring device comprises a temperature and humidity sensor, a composite monitoring sensor and a monitoring terminal. The monitoring terminal comprises a central control circuit, a power circuit, a signal acquisition circuit, an AD conversion circuit, a warning drive circuit, a buzzer and a monitoring state identification module. The power circuit, the AD conversion circuit, the warning drive circuit and the monitoring state identification module are all connected with the central control circuit. The signal acquisition circuit is connected with the central control circuit through the AD conversion circuit. The buzzer is connected with the central control circuit through the warning drive circuit. The signal acquisition circuit comprises a voltage analog signal acquisition and amplification circuit and a current analog signal acquisition and amplification circuit. The power circuit comprises a switching power circuit and a buck circuit module. The insulation online state monitoring device of the zinc oxide arrester has the advantages that the total leakage current and other parameters of the zinc oxide arrester can be monitored in real time, and lightning arrester accidents can be reduced.

Description

Technical field [0001] The invention relates to an insulation online state monitoring device of a zinc oxide arrester. Background technique [0002] The zinc oxide arrester in the substation is an important protective device to protect the safe operation of power equipment and prevent lightning accidents. The long-term safe operation of the arrester under high pressure is an important content of the safety performance monitoring of the arrester. In order to prevent the aging of the arrester or the explosion of its own insulation from causing a large-scale power outage, people have adopted the annual detection method of the arrester power failure detection; or put an ammeter in the ground loop of the arrester, and use manual inspection to record the reading of the ammeter To judge the aging and insulation damage of the arrester. The insulation performance of the arrester can be judged by measuring the resistive current component in its leakage current. This current component is...

Claims

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Application Information

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IPC IPC(8): G01R31/00
Inventor 张晓健辛永生
Owner HUAINAN POWER SUPPLY CO OF STATE GRID ANHUI ELECTRIC POWER CORPORATIO
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