Ducted bidirectional tidal current power station system

An operation method for a ducted bidirectional tidal current power station system according to any one of proceeding claims, wherein, specifically:

• the opening/closing gate is normally open, a forward water level difference is formed when the tidal level of the open sea is higher than that of the inland sea, so that seawater flows into the inland sea from the open sea via the duct to form a forward tidal current, and the bidirectional tidal current power generation device captures kinetic energy of the forward tidal current for power generation to output electric energy;
• and as time passes and tidal movement changes, when the tidal level of the open sea is equal to that of the inland sea, the water level difference becomes zero, the flow velocity of seawater in the duct becomes zero, and the bidirectional tidal current power generation device is kept in the original rotation direction for transient inertial rotation;
• and
• a backward water level difference is formed when the tidal level of the open sea is lower than that of the inland sea, so that seawater flows into the open sea from the inland sea via the duct to form a backward tidal current, and the bidirectional tidal current power generation device automatically changes the pitch angle to capture kinetic energy of the backward tidal current for power generation to output electric energy;
• and as time passes and tidal movement changes, when the tidal level of the open sea becomes equal to that of the inland sea again, the water level difference becomes zero, the flow velocity of seawater in the duct becomes zero, and the bidirectional tidal current power generation device is kept in the original rotation direction for transient inertial rotation.