Intelligent transformer station electronic mutual inductor state monitoring system and method

Abstract

The invention discloses an intelligent transformer station electronic mutual inductor state monitoring system and method. SV sampling data of an electronic mutual inductor are monitored and analyzed, and the abnormal situation of the electronic mutual inductor in practical operation is diagnosed through criteria and characteristic values; and the SV sampling data of the electronic mutual inductor are recorded so that a historical database for effectively assessing the operation state of the electronic mutual inductor is established. Real-time SV acquisition, analysis, diagnosis alarm and data storage are performed on the electronic mutual inductor of the intelligent transformer station in operation so that the abnormal situation of the sampling data of the electronic mutual inductor in operation can be timely found and recorded, and serious consequences caused by protection misoperation or miss operation can be reduced and even avoided by adopting necessary measures; and the recorded sampling data of the electronic mutual inductor are analyzed so that the practical operation condition of the electronic mutual inductor can be researched, data support is provided for improvement of the electronic mutual inductor and data basis is provided for state maintenance of secondary equipment.

Description

technical field [0001] The invention belongs to the technical field of intelligent substations, and in particular relates to a system and method for state monitoring of electronic transformers in intelligent substations based on SV data. Background technique [0002] Research on electronic transformers in my country started in the 1970s, and electronic transformers developed by many units have been connected to the grid for 10-750kV power systems. Some electronic transformers produced by foreign companies such as ALSTOM, NxtPhase, SDO, ABB, and SIEMENS are also connected to the grid. Since 2010, the State Grid Corporation has begun to pilot the application of various types of electronic transformers in smart substations around the country. In terms of types, current transformers mainly include: all-fiber type, magneto-optical glass type, and Rogowski coil type; voltage transformers mainly include: resistance-capacitance voltage divider type, capacitor voltage divider type, ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a state monitoring system for electronic transformers in intelligent substations to solve the problem that the existing electronic transformers cannot monitor their abnormal sampling or precision drop, which affects the safe and reliable operation of the power system. The monitoring method of the monitoring system

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