Distributed power generation system protection scheme
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Issued Date -
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app pub date -
May 28, 2003
filing date -
May 31, 2000
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A distributed power generation system (100) has at least two distributed power sources (104) connected to a point of connection (150) to a power utility network by interconnections, and is provided with a system protection scheme. The system protection scheme comprises at least three system protection terminals (18). One system protection terminal (18A) is located in the vicinity of the point of connection (150), while two others (18B-E) are located in the vicinity of one power source (104) each. The system protection terminals (18) are interconnected by a communication system (22), using a substantially dedicated communication resource. The system protection terminals (18) are equipped to measure characteristics of the power system at that particular location, preferably complex ac quantities and stability indicators. The measurements are spread to other system protection terminals (18). The system protection terminals (18) in the vicinity of the power sources (104) are equipped to evaluate the local stability condition and if necessary provide control signals to nearby situated power system units.
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