Use of voltage probe to measure high voltage amplitude and phase to improve on-line bushing monitoring relevance

A technology of voltage amplitude and voltage phase, which is applied in the direction of measuring electricity, electric power measurement through current/voltage, capacitance measurement, etc., and can solve problems such as transformer damage

Inactive Publication Date: 2016-08-17
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, failure of transformer bushings can lead to blackout and / or transformer damage

Method used

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  • Use of voltage probe to measure high voltage amplitude and phase to improve on-line bushing monitoring relevance
  • Use of voltage probe to measure high voltage amplitude and phase to improve on-line bushing monitoring relevance
  • Use of voltage probe to measure high voltage amplitude and phase to improve on-line bushing monitoring relevance

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Embodiment Construction

[0049] One or more specific embodiments of the invention are described below. In an effort to provide a concise description of these embodiments, not all features of an actual implementation may be described in detail in the specification. It should be understood that in the development of any such actual implementation, as in any engineering or design project, many implementation-specific decisions should be made to achieve the designer's specific goals, such as compliance with system-related or business-related constraints, which May vary for different implementations. Furthermore, it should be appreciated that such a design effort might be complex and time consuming, but would nonetheless be a routine undertaking of design, manufacture, and manufacture for those of ordinary skill having the benefit of this disclosure.

[0050]When introducing elements of various embodiments of the invention, the articles "a," "an," "the," and "said" mean that there are one or more of the e...

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Abstract

A bushing system includes a bushing monitor configured to monitor on-line operation of a capacitive-core bushing with a test tap. The bushing monitor includes a processor operatively coupled to a memory. The processor is configured to access a voltage signal received indicating a measured voltage amplitude or phase of the bushing. The processor is configured to access a current signal received indicating a measured current amplitude or phase of the bushing. The processor is configured to determine a capacitance value and / or a power factor value of the bushing based on the measured voltage and the measured current values, and generate a resultant signal or output based on the capacitance value and / or the power factor value of the bushing.

Description

Background technique [0001] The subject matter disclosed herein relates generally to transformer monitoring. More specifically, the present disclosure relates to bushing monitoring of power transformers. [0002] Power systems use a variety of components to deliver power to homes, factories, and the like. Transformers in power systems allow economical transmission and distribution of power through transmission lines. Transformers are used to transfer energy from one circuit to another, usually with a change in voltage. When power is transmitted from a power generator to a home through a transmission line, losses on the transmission line correspond to the amount of current flowing on the transmission line. So step up / step down the voltage using a transformer. Since losses are proportional to current, any given power transfer loss can be reduced by stepping up the voltage and thus stepping down the current, where power is the product of voltage and current. [0003] In many...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R27/26G01R21/06G01R31/58
CPCG01R21/06G01R27/2605G01R21/006G01R31/1245G01R31/58
Inventor E·科斯塔伊布里查
Owner GENERAL ELECTRIC CO
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