On-load tap-changer (OLTC) controller with on-line detection function

A switch controller and on-load tap technology, which is applied in the direction of program control, computer control, general control system, etc., can solve problems such as online detection of key parameters of OLTC, and achieve the effect of ensuring safe and stable operation

Inactive Publication Date: 2020-01-10
CHINA AGRI UNIV
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Problems solved by technology

Neither of these two patents includes online detection of key parameters of OLTC

Method used

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  • On-load tap-changer (OLTC) controller with on-line detection function
  • On-load tap-changer (OLTC) controller with on-line detection function
  • On-load tap-changer (OLTC) controller with on-line detection function

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Embodiment Construction

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention. rather than all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0026] figure 1 It is an overall structural block diagram of an on-load tap changer controller with an online detection function in the present invention, including an OLTC controller unit, an OLTC external signal acquisition unit, a communication transfer unit and an OLTC internal signal acquisition unit. Wherein, the OLTC external signal acquisition unit is connected to the OLT...

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Abstract

The invention provides an on-load tap-changer (OLTC) controller with an on-line detection function. The controller comprises an OLTC controller unit, an OLTC external signal acquisition unit, an OLTCinternal signal acquisition unit and a communication switching unit. The OLTC controller unit comprises functions of an existing OLTC controller, and can form a manual, automatic and remote control voltage regulating system with an on-load voltage regulating transformer. The OLTC controller unit further has an on-line detection function, and the detection function of key parameters such as transition resistance values and OLTC switching process time during OLTC on-line operation can be achieved. The OLTC external signal acquisition unit acquires external voltage and current signals of the OLTC-transformer bank; the OLTC internal signal acquisition unit acquires OLTC internal voltage and current signals; and the communication switching unit forwards the data acquired by the OLTC internal signal acquisition unit to the OLTC controller. According to the invention, online detection of the OLTC can be achieved, safe operation of the OLTC is guaranteed, and convenience is provided for equipment manufacturers, operators and operation and use personnel.

Description

technical field [0001] The present invention relates to the field of on-load tap changer (abbreviated as OLTC) control and parameter online detection, and more specifically relates to an on-load tap changer controller with an online detection function. Background technique [0002] The OLTC is a key component of the on-load voltage regulation system, and the stable operation of the OLTC is crucial to the safe and stable operation of the power system. The key parameters of OLTC include transition resistance value, transition process time, etc. These parameters are important indicators to measure whether its operating status is normal. At present, the key parameter detection method of OLTC is offline detection, and offline detection is mostly performed in OLTC maintenance or It is carried out when there is a fault, and the detection requires a power outage. The operation is more complicated. When the OLTC is connected to the grid, the online detection of its parameters cannot ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/042
CPCG05B19/0423G05B2219/24215
Inventor 杜海江李鹏程董彪
Owner CHINA AGRI UNIV
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