Island detection method, device and system of photovoltaic grid-connected power generating system
A technology for grid-connected power generation and island detection. It is used in photovoltaic power generation, single-grid parallel feeding arrangement, etc. It can solve the problems of power quality impact and small detection blind area, so as to improve power quality, reduce detection blind area, and ensure island detection efficiency. Effect
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[0040] The technical solutions of the present invention are further described below with reference to the accompanying drawings and specific embodiments of the description.
[0041] The invention mainly aims at the respective shortcomings of the active detection method and the passive detection method in the island detection of the photovoltaic grid-connected power generation system, and the active detection method and the passive detection method are integrated, which can not only utilize resources reasonably, but also reduce the detection blind area. Timely and effective detection of islanding phenomenon.
[0042] figure 2 It is a schematic flowchart of an embodiment of the islanding detection method of the photovoltaic grid-connected power generation system of the present invention.
[0043] The islanding detection method of the photovoltaic grid-connected power generation system in this embodiment includes the following steps:
[0044] Step S10, detecting the load power...
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