Satellite timing and management network based micro power grid islanding detection method and system
A satellite timing and network management technology, applied in the field of micro-grid systems, can solve problems such as system instability, complex inverter control algorithms, and impacts on power quality, achieving decoupling effects, reducing the complexity of control algorithms, and simple algorithms Effect
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[0026] The present invention will be further described below in conjunction with specific examples and accompanying drawings.
[0027] figure 1 It is a structural schematic diagram of an embodiment of the present invention, which includes a central controller, and the input terminal of the central controller passes through a zero-crossing detection circuit (such as Figure 4 shown) collects voltage signals from the public connection point between the large grid and the microgrid, and the central controller passes through the CAN bus (such as image 3 shown) communicates with the grid-connected inverter control unit, and the central controller obtains the second pulse signal that is synchronized with the international standard time through satellite timing. The satellite time service can adopt multiple methods such as the American satellite GPS system or the Chinese satellite Beidou system. In this embodiment, a GPS receiver is used.
[0028] The islanding detection method of...
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