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Electric power apparatus external insulative leakage current on-line monitoring system in converting station

A leakage current and monitoring system technology, applied in the electrical field, can solve problems such as difficult external insulation monitoring and poor portability, and achieve high measurement accuracy and stability, stable operation, and friendly interface.

Inactive Publication Date: 2004-12-08
XI AN JIAOTONG UNIV
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AI Technical Summary

Problems solved by technology

Most of them are technically based on embedded microprocessors. Due to the limitation of processor bus speed and storage capacity, it is difficult to uniformly monitor the external insulation of most power equipment in substations; most systems use single-chip microcomputers as the lower The computer communicates with the upper computer to solve the data transmission. The software is independently developed, and the portability is poor.

Method used

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  • Electric power apparatus external insulative leakage current on-line monitoring system in converting station
  • Electric power apparatus external insulative leakage current on-line monitoring system in converting station
  • Electric power apparatus external insulative leakage current on-line monitoring system in converting station

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Embodiment Construction

[0034] The present invention will be further described in detail below in conjunction with the accompanying drawings and the embodiments given by the inventor.

[0035] The outdoor insulation of substation power equipment includes line insulation, power station support insulation, and surface or air insulation of porcelain sleeves and bushings of electrical equipment, etc. For different types of outdoor insulation, different monitoring schemes should be selected according to specific conditions. For example, in the online monitoring of line insulators, embedded microcomputer systems and wireless communication technologies are often used to solve the problem of data transmission. The monitoring system is installed on the nearby iron tower, and the remote monitoring center centrally manages and monitors and completes the storage and analysis of monitoring data. . For substations, the following power equipment are usually included in the station: current transformers, voltage tra...

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Abstract

The system is composed of flow taking transducer, regulation unit of front end signal, regulation unit of back end signal, data collection unit, data analysis unit and trend predictive unit. The present invention has developed software of remote monitoring, trend prediction, data processing, data analysing and circulation detecting for multiple equipment-multiple pollution leakage current by using virtual equipment and graphic programming language LabVIIEW with combining of SQLSERVER2000 databank system.

Description

technical field [0001] The invention belongs to the field of electrical technology, and relates to an on-line monitoring technology for external insulation leakage current of substation power equipment, in particular to an online monitoring system for external insulation leakage current of substation power equipment based on virtual instrument technology. Background technique [0002] For substation power equipment, especially those operating in industrial areas, coastal areas and saline-alkali areas, the current flowing through the dirty layer on the surface is affected by the three factors of voltage, pollution and climate. When the pollution on the insulating surface is serious, it will happen at any time Contamination flashover accident. Pollution flashover not only poses a serious threat to the safe operation of the power grid, but also causes huge economic losses. The present invention has successfully proposed and developed the external insulation leakage current mon...

Claims

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Application Information

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IPC IPC(8): G01R31/02H02H3/04
Inventor 成永红陈玉张少峰赵勇胡学胜
Owner XI AN JIAOTONG UNIV
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