High-voltage direct-current transmission device

Abstract

A full body safety harness to be worn by a person includes an upper torso portion and a lower seat portion. The upper torso portion is operatively connected to the lower seat portion by a first connector on a first lateral side and a second connector on a second lateral side thereof. The first connector and the second connector enable forward and rearward rotation of the upper torso portion relative to the lower seat portion (as in the case of forward and rearward bending by a user of the harness) without causing a significant increase in tension in the lower seat portion. A safety harness to be worn by a person which includes at least one strap section including a cam buckle in operative connection therewith to adjust a fit of the strap section. A safety harness includes a label pack system including a base having an attachment mechanism to attach the base to a strap of the safety harness and a closure in operative connection with the base. The base and the enclosure at least partially enclose at least one label (and more typically a plurality of labels) when the closure in a closed state. A safety harness includes a strap section having an interior surface that is adjacent a wearer when the safety harness is worn and an exterior surface generally opposite the interior surface. The interior surface is perceptibly different from the exterior surface so that a wearer can distinguish the interior surface from the exterior surface. A safety harness includes at least one strap section have a first end; the first end including an end member in operative connection therewith, the end member includes a retaining member to connect the end member to the strap or to another strap of the harness.

Description

technical field [0001] The invention relates to a device for high-voltage direct current transmission, which has a power connection terminal for connecting to an alternating current grid for providing energy, and a power device connection terminal for connecting multi-phase power consumers, wherein the power connection terminal A rectifier is connected after it, and the rectifier is connected to the inverter through a DC intermediate circuit with a filtering device, and the AC side of the inverter is connected to the connection terminal of the electrical equipment, wherein the rectifier and the inverter have thyristor converters Thyristor ventile, and the control unit triggers the thyristor ventile of the inverter according to the clock signal. [0002] The invention also relates to a method for high voltage direct current transmission, wherein the alternating current of the polyphase alternating current network supplying the energy is rectified by a rectifier and transmitted ...

AI Technical Summary

Problems solved by technology

[0004] However, the thyristor has the disadvantage that although it can be switched by an electrical trigger signal from an off state in which the current through the thyristor is interrupted to an on state in which current through the thyristor converter valve is possible, it cannot be switched through The trigger signal disconnects the thyristor valve

However, IGBTs are expensive and have high power losses, which also bring a cost disadvantage to thyristors during operation

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