Digital protection method for power transformers based on an equivalent circuit composed of inverse inductance

1988 ◽  
Vol 3 (4) ◽  
pp. 1501-1510 ◽  
Author(s):  
K. Inagaki ◽  
M. Higaki ◽  
Y. Matsui ◽  
K. Kurita ◽  
M. Suzuki ◽  
...  
Keyword(s):  
Equivalent Circuit ◽  
Power Transformers ◽  
Protection Method ◽  
Digital Protection

scholarly journals Types of Industrial Architectural Heritage and Digitalized Protection Method of Zhenjiang

2021 ◽  
Vol 236 ◽  
pp. 05028
Author(s):  
Li Xiao ◽  
Liu Chang
Keyword(s):  
Yangtze River ◽  
Information Collection ◽  
Architectural Heritage ◽  
Database Construction ◽  
Protection Method ◽  
Protection Strategies ◽  
Protection And Utilization ◽  
The Grand Canal ◽  
Digital Protection ◽  
Interactive Experience

As an ancient historical city, where the Grand Canal meets the Yangtze River, Zhenjiang has more than 100 modern industrial architectural heritages and its scientific protection and utilization has become an important subject in the development and historical renewal of Zhenjiang city. By investigating and analyzing the basic types of industrial architectural heritage in Zhenjiang, this paper discusses the digital protection strategies and puts forward several specific digital protection methods such as heritage information collection, database construction, interactive experience. To promote the industrial architectural heritage in Zhenjiang to produce comprehensive value in the course of social development.

Determination of the attenuation coefficients from the measured frequency characteristics of the windings of power transformers. Part 1. Theoretical consideration

2021 ◽  
Vol 1 (1) ◽  
pp. 13-22
Author(s):  
Vasily S. LARIN ◽  
◽  
Daniil A. MATVEEV ◽  
Keyword(s):  
Equivalent Circuit ◽  
High Frequency ◽  
Transfer Functions ◽  
Power Transformers ◽  
Reactive Component ◽  
Input Admittance ◽  
Vector Fitting ◽  
Transformer Winding ◽  
Resistive Component ◽  
High Frequency Resonance

To model high-frequency processes and determine the stresses on the internal insulation of transformer windings, reliable high-frequency models of power transformers are required. The accuracy of modeling high-frequency resonance processes in the windings depends on how correctly the model reproduces the natural frequencies and damping of free oscillations in the windings. To construct and verify high-frequency models of power transformers, it is necessary to have experimentally obtained data on the values of damping factors. There is a known method for determining the winding damping factors based on measurements of the voltage transfer functions at the internal points of the windings and their subsequent processing using the vector fitting technique, but its application is not always possible in practice. The article presents the results of theoretical studies performed for a simplified transformer winding equivalent circuit. It is shown that the damping factors can be estimated from the width of the resonance peaks of the frequency responses of the voltage modulus and reactive component at the midpoint of the equivalent circuit, and from the input admittance resistive component and current in the neutral of the considered resonance circuit.

The Development of a $d$–$q$ Axis WPT-Based Digital Protection for Power Transformers

2012 ◽  
Vol 27 (4) ◽  
pp. 2255-2269 ◽  
Author(s):  
S. A. Saleh ◽  
A. Aktaibi ◽  
R. Ahshan ◽  
M. A. Rahman
Keyword(s):  
Power Transformers ◽  
Digital Protection

scholarly journals Research on Digital Modeling and Life Cycle Information Management of Architectural Heritage Protection Based on BIM

2021 ◽  
Vol 5 (1) ◽  
pp. 45
Author(s):  
Zhao Liang
Keyword(s):  
Life Cycle ◽  
Information Management ◽  
Architectural Heritage ◽  
Protection Method ◽  
Digital Modeling ◽  
Building Information ◽  
Heritage Protection ◽  
Heritage Industry ◽  
Digital Protection ◽  
Whole Life Cycle

Building information modelling (BIM) has been adopted in the architectural heritage industry. The digital protection method with BIM Technology as the core can introduce the information management workflow into the protection of architectural heritage, which can provide possibility for the complete preservation of all kinds of information related to the architectural heritage, improve the efficiency of protection, and meet the management needs of the whole life cycle of the architectural heritage. This paper is based on digital technology and combined with the characteristics of architectural heritage to create a BIM model of architectural heritage. The Autodesk Revit software, which is commonly used in China, is used as the entry point, and the C# language is used to develop Revit to make up for the shortcomings of traditional architectural heritage protection. At the same time, all kinds of information related to the architectural heritage are completely preserved, improving the efficiency of protection work, and meeting the information management needs in the process of building heritage maintenance and management.

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