Arc detection and prevention in a power generation system

• Main Authors: RON NEUMAN, MEIR GAZIT, TZACHI GLOVINSKY, NADAV BERKOVITCH, AMIR FISHELOV, LIOR HANDELSMAN, MEIR ADEST, YAKIR LOEWENSTERN, DAVID BRAGINSKY, ILAN YOSCOVICH, YOAV GALIN, GUY SELLA
• Format: Patent
• Language: Chinese; English
• Published: 27.07.2018
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRA-REDRADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, E.G. USINGPHOTOVOLTAIC [PV] MODULES; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The invention provides methods for arc detection in a system including one or more photovoltaic generators, one or more photovoltaic power devices and a system power device and/or a load connectible to the photovoltaic generators and/or the photovoltaic power devices. The methods may measure voltage, current, and/or power delivered to the load or system power device, and the methods may measure voltage noise or current noise within the photovoltaic system. The methods may periodically, and/or in response to detecting noise, reduce an electrical parameter such as current or voltage in order toextinguish an arc. The methods may compare one or more measurements to one or more thresholds to detect arcing, and upon a comparison indicating that arcing is or was present, an alarm condition may be set. 用于在系统中进行电弧检测的方法，所述系统包括个或多个光伏发电器、个或多个光伏功率装置，以及可连接至光伏发电器和/或光伏功率装置的系统功率装置和/或负载。所述方法可测量输送至负载或系统功率装置的电压、电流和/或功率，且所述方法可测量光伏系统内的电压噪声或电流噪声。所述方法可以周期性地和/或响应于检测到噪声而减小例如电流或电压等电气参数以便熄灭电弧。所述方法可以将个或多个测量值与个或多个阈值进行比较以检测电弧，并且旦比较指示电弧存在或存