Electrical device with emergency cooling system

摘要

An electrical device includes a winding, a primary cooling system, a secondary cooling system, and an actuator. The winding includes an interior portion and an exterior surface. The primary cooling system cools the exterior surface of the winding. The secondary cooling system cools the interior portion of the winding. The actuator is configured to actuate the secondary cooling system in response to a sensed condition of the electrical device or a predicted condition of the electrical device.

主权项

1. A transformer, comprising:
a core; a winding wrapped around the core, the winding including an interior portion and an exterior surface, wherein a passage is formed within the interior portion of the winding; a primary cooling system for cooling the exterior surface of the winding; a secondary cooling system including a high-pressure fluid source fluidly coupled to the passage formed within the interior portion of the winding to provide a cooling fluid to the passage for cooling the interior portion of the winding; a current sensor for detecting current through the transformer; and an actuator configured to activate the secondary cooling system in response to an activation signal indicating a predicted condition of the transformer, wherein the predicted condition is based on an amount of transient current flow through the transformer detected by the current sensor and a duration of transient current flow through the transformer detected by the current sensor.