Grid-connected relay circuit

The embodiment of the invention discloses a grid-connected relay circuit. The grid-connected relay circuit comprises a bus voltage circuit, a power grid voltage circuit, a sampling control circuit and a relay group; the sampling control circuit is electrically connected with the bus voltage circuit...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	LI WEI, ZHANG JUN, ZHOU YINXING
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS SYSTEMS FOR STORING ELECTRIC ENERGY TESTING
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Beschreibung
Zusammenfassung:	The embodiment of the invention discloses a grid-connected relay circuit. The grid-connected relay circuit comprises a bus voltage circuit, a power grid voltage circuit, a sampling control circuit and a relay group; the sampling control circuit is electrically connected with the bus voltage circuit and the power grid voltage circuit and used for collecting the bus voltage of the bus voltage circuit and the power grid voltage of the power grid voltage circuit and adjusting the bus voltage to enable the output side voltage of the bus voltage to be equal to the power grid voltage; and the sampling control circuit is also electrically connected with the relay group, a first node and a second node, and is used for controlling the on-off of each relay in the relay group at a detection stage, then collecting the output side voltage and the relay on-off voltage between the first node and the second node, and judging the working state of at least one relay according to a comparison result of a difference value between