Non-contact electric field sensor equipment for measuring transient electric field of power transmission and transformation project

The invention discloses non-contact electric field sensor equipment for measuring a transient electric field of a power transmission and transformation project. The electric field sensor equipment comprises a first metal pole plate, a second metal pole plate, and an incident collimator, a polarizer, a wave plate, an electro-optical crystal, an analyzer and an emergent collimator which are connected in sequence, wherein the electro-optical crystal is used in a y-tangent z-transmission mode, a measured electric field acts on the y-axis direction of the electro-optical crystal, a laser signal acts on the z-axis direction of the electro-optical crystal, and the x-axis direction of the electro-optical crystal is perpendicular to the y-axis direction and the z-axis direction; and the first metal pole plate and the second metal pole plate are respectively positioned on two sides of the y-axis direction of the electro-optical crystal. The first metal pole plate and the second metal pole plate are additionally arrange