Digital current synthesizer
Title：
Digital current synthesizer
Application Number：
 200710065390
Application Date：
 2007/04/13
Announcement Date：
 2007/10/10
Pub. Date：
Publication Number：
 101051739
Announcement Number：
Grant Date：
Granted Pub. Date：
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 H02H 3/26H02H 3/34
Applicant(s)：
 Tsinghua Univ.
Inventor(s)：
 Dong Xinzhou, Zhang Ning, Bo Zhiqian
Key Words：
 Digital, current, synthesizer
Abstract：
 Belonging to power system area, the disclosed digital current synthesizer includes current transformation module (CTM), data acquisition module (DAM), data processing module (DPM), power amplification module (PAM), and guidance wire way out module (GWWM). Connected relation of these modules is as following: CTM converts signal of three-phase current from current transformer to signal of voltage outputted to DAM; processing the collected signal to digital signal in real time rapidly, DAM transfers the process data to the DPM; after obtaining corresponding synthesized current value in single phase, the DPM sends the value to D/A conversion module to convert it to analog signal sent to PAM; amplifying the signal, PAM through GWWM inputs the amplified signal to metal guidance wire. The invention applies microcomputer differential protective system (DPS) to guidance wire channel, and makes compatibility between disclosed and traditional DPS at area to be protected possible.
Claim：
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PCT：
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2008-4-17
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