Method for online monitoring capacitive voltage transformers

A voltage transformer and capacitive technology, applied in the field of capacitive voltage transformer online monitoring, can solve problems such as high cost and affecting safe and stable operation.

Active Publication Date: 2013-12-18
FOSHAN POWER SUPPLY BUREAU GUANGDONG POWER GRID
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] Based on this, it is necessary to provide an online monitoring method for capacitive voltage transformers in view of the problems of high cost and easy influence on safe and stable operation in the prior art

Method used

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  • Method for online monitoring capacitive voltage transformers

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Embodiment Construction

[0014] The specific implementation of the capacitive voltage transformer online monitoring method of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0015] see figure 1 as shown, figure 1 It is a flowchart of an online monitoring method for a capacitive voltage transformer of an embodiment, including the following steps;

[0016] S1: Obtain the secondary voltage data of the capacitive voltage transformers of each substation in the monitoring area based on the energy management system (EMS).

[0017] In one embodiment, the process of acquiring secondary voltage data in step S1 includes the following steps:

[0018] S101. Collect the secondary voltage by using the signal sensors installed on the capacitive voltage transformers of each substation in the monitoring area.

[0019] The function of the signal sensor is to collect the secondary voltage data of the capacitive voltage transformer operated on site. Preferably, ...

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Abstract

The invention provides a method for online monitoring capacitive voltage transformers. The method includes the steps that secondary voltage data of the capacitive voltage transformers of transformer stations in a monitored area are acquired based on an energy management system; the secondary voltage data are associated with information of transformer equipment corresponding to the transformer stations; failure state information of the capacitive voltage transformers is judged according to the secondary voltage data; operating states of the capacitive voltage transformers of the transformer equipment of the transformer stations in the monitored area are monitored according to the failure state information. According to the method for online monitoring the capacitive voltage transformers, hardware equipment does not need to be additionally arranged, the operating states of the capacitive voltage transformers can be online monitored in real time, monitoring cost is low, safe and reliable operation of an electric power system is not affected, and the method is suitable for being widely popularized and applied to the electric power system.

Description

technical field [0001] The invention relates to the technical field of electric power engineering, in particular to an online monitoring method of a capacitive voltage transformer. Background technique [0002] Capacitor Voltage Transformer (CVT) is widely used in power systems. It is a power device for voltage measurement, power measurement and control, automatic control, relay protection and also as a power line carrier capacitor. Due to its small impact strength , small size, light weight, reliable damping of ferromagnetic resonance and excellent transient response characteristics in practical applications, gradually replacing electromagnetic voltage transformers, is an indispensable equipment in the power grid. [0003] During the operation of capacitive voltage transformers, there may be equipment defects such as increased dielectric loss and abnormal secondary voltage due to internal moisture, aging, and breakdown of internal capacitive elements. In severe cases, explo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00G01R35/00
Inventor 王岩詹清华林浩李慧彭飞进胡聪关敬棠黄林陈志平张伟忠何胜红姜胜宝
Owner FOSHAN POWER SUPPLY BUREAU GUANGDONG POWER GRID
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