Intelligent transformer station electronic mutual inductor state monitoring system and method

A condition monitoring system and technology for smart substations, applied in the field of smart substations, can solve problems such as inability to sample abnormality or accuracy degradation affecting the safe and reliable operation of power systems

Inactive Publication Date: 2015-03-04
XJ ELECTRIC +1
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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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  • Intelligent transformer station electronic mutual inductor state monitoring system and method

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Embodiment Construction

[0019] The present invention will be further introduced below in conjunction with the accompanying drawings and specific embodiments.

[0020] Such as figure 1 Shown is a schematic diagram of the status monitoring system of electronic transformers in smart substations. It can be seen from the figure that the system includes a recording unit 1 and a management unit 2. Data acquisition module 5, a data processing module for processing data, a data file storage module 10 and a database 9 for storing SV data after processing calculations, alarms, and feature value information, and a database 9 for communicating with the management unit The communication service module 12 ; the management unit 2 includes a monitoring and analysis system 12 for receiving, retrieving and storing and displaying the information of the recording unit, and a configuration module for configuration.

[0021] The recording unit 1 also includes a message center module 11 for internal communication and a tim...

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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, ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J13/00
CPCY02E60/00Y04S10/16
Inventor 金华蓉王兴安陈玉涛周晓娟窦中山吴双惠蒋怀贞刘永华王兆庆王四伟张鹏远陈强
Owner XJ ELECTRIC
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