Method for raising measuring precision of microcomputer protective relay device
Title：
Method for raising measuring precision of microcomputer protective relay device
Application Number：
 200610112773
Application Date：
 2006/09/01
Announcement Date：
 2007/02/21
Pub. Date：
Publication Number：
 1917323
Announcement Number：
Grant Date：
Granted Pub. Date：
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 H02H 7/26
Applicant(s)：
 Tsinghua Univ.
Inventor(s)：
 Ji Yindong, Sun Xinya, Jin Wenguang, Qian Limin, Li Yingchun, Zhu Shanjun, Dong Dengwu, Xiao Chaoliang
Key Words：
 raising, measuring precision, microcomputer, protective relay device
Abstract：
 Characters of the invention are that using divider circuit implements protection in two segments corresponding to large and small measured current for the protection current in order to raise precision; carrying out seamless fitting for data sampled from same protection current in segments; according to rated value and actual value, software layer carries out correction of amplitude and correction of phase for each channel of protection current at same time. The invention reflects real change of each protected electric quantity correctly. Thus, based on the said real change to carry out correction, the invention raises precision of measurement.
Claim：
Priority：
PCT：
LegalStatus：

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

Relevancy information



Other Patents of Same Inventor

Device for preventing unwanted operation of relay based on pulse transfer



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