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Ultrahigh-voltage online monitoring system

A monitoring system and ultra-high voltage technology, applied in signal transmission systems, information technology support systems, non-electrical signal transmission systems, etc., can solve problems such as detection accuracy and detection range limitations, damage to strength and toughness, and easy wear and tear of mechanical parts. , to avoid maintenance and loss costs, improve expansion and self-organization capabilities, and overcome the effects of poor anti-interference

Active Publication Date: 2015-01-21
STATE GRID CORP OF CHINA +1
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] However, passive devices or electromagnetic mechanical components in the prior art overcome the problem of not being subject to electromagnetic interference, but their detection accuracy and detection range are often greatly limited, and mechanical components are prone to produce wear, which can further lead to reduced accuracy or device damage
At the same time, if each monitor is connected to an optical fiber converter, it will easily lead to high cost, and when the optical fiber is laid for a long distance, the insufficient strength and toughness will easily lead to damage. Therefore, it is necessary to provide a To meet the monitoring device to avoid long-distance laying of optical fiber

Method used

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Embodiment Construction

[0018] Such as figure 2 As shown, it is a structural diagram of the local unit of the present invention. The local unit includes an ultra-high voltage sampling unit, a distributed power supply unit, an energy storage unit, a controller unit, and a conversion unit. The functional unit is set therein.

[0019] The ultra-high voltage sampling unit includes an insulator leakage current detection unit, an environmental monitoring unit, a lightning strike monitoring unit, and an ice coating parameter detection unit, which can detect the leakage current of dirty insulators, temperature, humidity, wind force, wind speed and other environmental conditions, lightning strikes and lightning strikes. Network status, and the icing status of the line.

[0020] The distributed power supply unit is composed of a wind-solar complementary power supply system, including solar panels, wind generators, maximum power tracking controllers, rectification and filtering circuits, and charging controll...

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Abstract

The invention discloses an ultrahigh-voltage online monitoring system. The system comprises a local unit, a transmission unit and a remote control center. The local unit comprises an ultrahigh voltage sampling unit, a distributed power supply unit, an energy storage unit, a controller unit and a conversion unit, and all the function units of the local unit are arranged inside an electromagnetic-interference-resistant shell. The ultrahigh-voltage online monitoring system combines the characteristics of optical fiber transmission and the characteristics of wireless transmission, overcomes the defect that interference resistance is poor when single wireless monitoring and transmission is adopted, reduces the cost of single optical fiber wiring, avoids the maintenance and loss cost for long-distance optical fiber laying, has higher flexibility than optical fibers and has the advantages of seamless access, and wireless transmission further has better expansion capacity and self-organizing capacity.

Description

technical field [0001] The invention relates to an electromagnetic environment problem of an ultra-high voltage transmission line, in particular to monitoring under the electromagnetic environment. Background technique [0002] The electromagnetic environment problem is a major technical issue that must be considered in the design, construction and operation of ultra-high voltage AC and DC transmission lines. At this stage, this problem is still a hot research topic in the world. The electromagnetic environment of the EHV transmission line is related to the corona characteristics of the transmission line. The corona of the line will cause corona loss, power frequency electromagnetic field (AC transmission), DC electric field effect (DC transmission), radio interference and audible noise, etc. as a result of. Therefore, there is a problem of electromagnetic interference in the transmission of the detection results of each device in the ultra-high voltage transmission line. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/08H02J13/00G08C17/02G08C23/06
CPCY02B90/20Y04S40/124Y04S40/126
Inventor 罗虎苏海霞王修庞张双梓张慧杰
Owner STATE GRID CORP OF CHINA
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