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Online capacitance monitoring device of compensating capacitors

A technology for compensating capacitors and monitoring devices, applied in measuring devices, measuring electrical variables, measuring resistance/reactance/impedance, etc., to solve energy supply problems and ensure safety

Inactive Publication Date: 2013-09-11
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the dielectric loss and capacitance of compensation capacitors are mainly measured by off-line preventive tests, and online monitoring methods are rarely seen.

Method used

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  • Online capacitance monitoring device of compensating capacitors
  • Online capacitance monitoring device of compensating capacitors

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Embodiment Construction

[0022] Depend on Figure 1-2 As can be seen from the illustrated embodiment, the present invention includes a resistor divider 1, a current sensor 2, a signal acquisition module 3, a wireless transmission module 4, a data receiving module 5, an industrial computer 6 and a high-energy battery; the data receiving module 5 includes a wireless Receiving module 5-1 and control module 5-2; Capacitor bank 9 to be measured connects signal acquisition module 3 through described resistance voltage divider 1 and current sensor 2 respectively; Described signal acquisition module 3 communicates with wireless receiving module 4 through wireless transmission module Module 5-1 is wirelessly connected; the wireless receiving module 5-1 is bidirectionally connected with the serial port RS485 interface of the industrial computer 6 through the control module 5-2; the positive pole of the high-energy battery is respectively connected to the current sensor 2, the signal acquisition module 3 and the ...

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Abstract

The invention belongs to the technical field of electrical equipment condition-based maintenance and relates to an online capacitance monitoring device of compensating capacitors. The online capacitance monitoring device comprises a resistive divider, current sensors, signal collection modules, wireless launching modules, a data receiving module, an industrial personal computer and a high energy battery. The data receiving module comprises a wireless receiving module and a control module. A capacitor group to be tested is connected with the signal collection modules through the resistive divider and the current sensors. The signal collection modules are wirelessly connected with a wireless receiving module through the wireless launching modules. The wireless receiving module is in both-way connection with a serial port RS 485 interface of the industrial personal computer through a control module. The positive pole of the high energy battery is connected with the current sensors, the signal collection modules and one power supply ends of the wireless launching modules, and the negative pole of the high energy battery is connected with a metal framework of the capacitor group to be tested. The online capacitance monitoring device ensures online detection safety and safely and effectively solves the problem of energy supply of outdoor electronic components.

Description

technical field [0001] The invention belongs to the technical field of state maintenance of electrical equipment, and relates to an on-line monitoring device for the capacitance of a compensation capacitor. Background technique [0002] As a very important reactive device, the compensation capacitor plays a decisive role in improving the power system structure and improving the power quality. Its safe operation is an important guarantee for the economical and safe operation of the power system. According to statistics, the national capacitor failure rate in 2009 was 1.3%. The usual way to do this is to send engineering personnel to the scene to test and check the capacitors and replace them after the accident. At present, the intelligence level of compensation capacitors in operation is very low, and the capacitor bank information can only be obtained through the capacitor protection device, which cannot effectively locate each capacitor and its change process trend infor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R27/26
Inventor 杜大全范辉高树国潘瑾贾伯岩
Owner STATE GRID CORP OF CHINA
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