Operation monitoring system and method of high-voltage power transformer

Abstract

The embodiment of the invention discloses an operation monitoring system and method of a high-voltage power transformer. The system is composed of a current transformer, a voltage transformer, a current / voltage data recorder, an information controller, an information processor, a terminal equipment interface, a power supply and a monitoring cabinet. One end of each of the current transformer and the voltage transformer is electrically connected with three sides of a three-winding transformer and the other end is electrically connected with the current / voltage data recorder; the output terminal of the current / voltage data recorder is electrically connected with the input terminal of the information controller; the output terminal of the information controller is electrically connected with the input terminal of the information processor electrically; and the output terminal of the information processor is electrically connected with the terminal equipment interface. On the basis of a power quality index analysis and evaluation mechanism, the operation state of the high-voltage power transformer can be monitored in real time, the state information can be fed back instantly, and checking, maintenance, and troubleshooting can be carried out on the transformer conveniently.

Description

technical field [0001] The invention relates to a monitoring system and method, in particular to a high-voltage power transformer operation monitoring system and method applied to a three-winding transformer. Background technique [0002] High-voltage power transformers are important equipment in power plants and substations, and their operation directly affects the transmission of power, so it is particularly important to monitor the operation of power transformers. Power grid operation monitoring is to identify faulty components by measuring and analyzing electrical quantities such as current and voltage in the power grid after a fault, as well as the switching value change information of protection and circuit breaker action. Good monitoring strategies and troubleshooting methods are of great significance for shortening the downtime and preventing accidents from expanding. The most ideal monitoring index is to monitor based on power quality. [0003] At present, the ope...

AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present invention provides a high-voltage power transformer operation monitoring system and method, which is applied to a three-winding transformer, based on the power quality index analysis and evaluation mechanism, and solves problems in the prior art such as fault ride-through current, inrush current, transient overvoltage, harmonic There is a lack of systematic monitoring methods for important indicators such as wave voltage, as well as the lack of effective and timely transmission methods and information data processing, evaluation and display mechanisms in terms of monitoring information feedback channels, and the inability to monitor online in real time.

Images