AC energy consumption control method and device for sending end of new energy island grid sending system

Abstract

The present application relates to the technical field of flexible direct current transmission, and discloses a sending-end AC energy consumption control method and device of a new energy islanded power grid sending-out system. The present application sends a target signal when any pole is in an unlocked state and a target performance parameter meets a possible fault condition, which prompts the sending-end AC energy consumption control system to put into a proper number of AC energy consumption devices. If a DC fault signal sent by the receiving-end flexible direct current converter station is detected within a certain time, it is detected whether a cut-off AC energy consumption instruction sent by a DC control protection system is received. When the cut-off AC energy consumption instruction is received, the AC energy consumption devices that have been put into are cut off in groups according to a preset interval time. If no DC fault signal is received, the AC energy consumption devices that have been put into are immediately cut off in groups according to a preset interval time. The present application can quickly and accurately put into AC energy consumption without relying on the protection signal of the AC energy consumption input strategy, realize self-clearing of DC faults, and has low control complexity.

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