Shore power supply system for ships and power supply method thereof
A technology for electrical systems and ships, applied in the field of electric power, can solve problems such as inability to realize power consumption on land and ships, and needs to be improved, and achieve the effects of suppressing neutral point drift, ensuring continuous power supply, and rapid conversion
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[0015] The present invention provides a ship shore power compatible system solution that can not only provide three-phase three-wire power supply for the ship when it is docked, but also provide three-phase four-wire plus protection line system for the land-use electrical equipment of the port wharf, such as figure 1 As shown, the ship shore power system of the present invention includes a transformer B, and a parallel grounding impedance Z and a grounding circuit breaker QF are provided between the low-voltage side of the transformer B and the grounding point 4 , total circuit breaker QF 1 , land load circuit breaker QF 2 , marine load circuit breaker QF 3 , neutral line N, protective earth line PE. The land power load and the ship power load are connected in parallel, through the main circuit breaker QF 1 Connect with the low-voltage side of the transformer, in which the land power load is connected with the main circuit breaker QF 1 There is a land load circuit breaker ...
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