Gamma/ transformer triangle winding circumfluence algorithm method and device
Title：
Gamma/ transformer triangle winding circumfluence algorithm method and device
Application Number：
 200710118826
Application Date：
 2007/06/12
Announcement Date：
 2008/01/16
Pub. Date：
Publication Number：
 101105517
Announcement Number：
Grant Date：
Granted Pub. Date：
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 G01R 31/06G01R 27/26G01R 19/00
Applicant(s)：
 Tsinghua University
Inventor(s)：
 Bi Daqiang, Wang Xiangheng, Wang Weijian
Key Words：
 transformer, triangle winding, circumfluence, algorithm method, device
Abstract：
 The invention discloses a calculation method and a device of Y/triangle transformer triangle winding medium circulation and belongs to the main equipment relay protection technical field in electric power system; the method comprises the steps that winding resistance and leakage inductance of two sides of the Y/ triangle transformer are obtained; zero sequence voltage of the Y side thereof is obtained or the three-phase winding voltage of the Y side thereof is measured; three-phase winding voltage equations of the Y side and the triangle side thereof are formulated according to the winding resistance, the leakage inductance, the three-phase winding current and the three-phase winding inductive potential of the Y side and the triangle side thereof; all the equations are calculated according to the relation of all parameters; circulating current is obtained by eliminating all unattainable parameters except winding medium circulating current of the triangle side. The device comprises an obtaining module, a voltage calculating module and a circulating current calculating module. When the transformer triangle side winding doesn't use a current transformer, the invention can calculate out the circulating current of winding of the triangle side, calculate out equivalent instantaneous inductances of all phases of the transformer and further judge magnetizing inrush current of the transformer.
Claim：
Priority：
PCT：
LegalStatus：

Recommend this patent:
1 2 3 4 5
Average ( 0 votes):
                                                                          Recommended Patents>>

Relevancy information



Other Patents of Same Inventor

Generator stator single phase grounding protection method
power transformer having harmonic suppression function and based on harmonic paraphase principle
Optimized method of main protective configuration for internal fault of largesize motor stator coil
Protection and fault positioning method for generator stator winding single-phase earthing
Large-scale steamer generator neutral point lead-out mode and arrangement protecting method



News & Events More>>

Last Update  
2008-4-17
  Selected patents owned by Tsinghua University filed in 2005 are loaded.
2008-3-31
  Selected patents owned by Tsinghua University filed in 2006 and 2007 are load.







Copyright 2008-2015 All Rights Reserved Patent License of China.      Designed by Easygo