PHOTOVOLTAIC POWER GENERATION SYSTEM

PROBLEM TO BE SOLVED: To provide a photovoltaic power generation system that detects short-circuit to protect a circuit in a large photovoltaic power generation system such as a mega solar system.SOLUTION: A photovoltaic power generation system 1 has a single-stage or multi-stage connection box 7 fo...

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Bibliographic Details
Main Authors TANNO TSUTOMU, KATO MASAKI, ARAIMOTO TAKESHI, SEKIGUCHI KATSUHIKO
Format Patent
LanguageEnglish
Published 20.12.2012
Subjects
CONTROLLING
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
GENERATION
PHYSICS
REGULATING
SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
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Summary:PROBLEM TO BE SOLVED: To provide a photovoltaic power generation system that detects short-circuit to protect a circuit in a large photovoltaic power generation system such as a mega solar system.SOLUTION: A photovoltaic power generation system 1 has a single-stage or multi-stage connection box 7 for electrically connecting plural solar battery strings 6 in parallel, a power conditioner 11 which is electrically connected to the connection box 7 and interconnects the solar battery string 6 to a power system, a breaker 16 that can cut off the parallel circuit in the connection box 7, and a control device 17 for measuring the magnitude of current and the magnitude of the voltage between connection boxes 7 at adjacent stages or between the connection box 7 and the power conditioner 11 and cutting off the parallel circuit through the breaker 16 when the state that the measurement result is larger than a predetermined current value and smaller than a predetermined voltage value is continued for a predetermined time.
Bibliography:Application Number: JP20110122556