A locomotive high and low voltage insulation detection device

Abstract

The invention discloses a locomotive high-low voltage insulation detection device which comprises a PWM (Pulse Width Modulation) modulation direct-current voltage boosting and stabilizing module, a direct-current voltage sensor, a SPWM (Synchronized Pulse-Width Modulation) adjustable contravariant alternating current outputting module, an alternating current voltage sensor, an alternating current sensor, a controller, a power supply filter, a liquid crystal display module and an insulation detection module, wherein the controller controls the insulation detection module through a key switch of a locomotive; when the key switch is closed, high-voltage online insulation detection is carried out; and when the key switch is opened, low-voltage online insulation detection is carried out. With the adoption of the locomotive high-low voltage insulation detection device, comprehensive detection can be carried out on high-voltage equipment arranged on the roof of the locomotive, and display and alarm are carried out, so that accidents can be effectively prevented and avoided; and low-voltage online insulation detection is mainly used for on-line detection of the state of insulation against ground of a loop, resistance to ground of current anode and cathode is also timely displayed, voice and optical early warning is carried out, and data is recorded and stored in real time and is output through a USB (Universal Serial Bus) port, so that technicians can conveniently analyze the state of the data.

Description

technical field [0001] The invention relates to a detection device, in particular to a high and low voltage insulation detection device for a locomotive. Background technique [0002] The electric locomotive receives electricity through the contact between the pantograph and the power grid above the locomotive. The pantograph and the insulating support are completely in the open state. Destruction, because the flight attendants cannot judge the fault situation, once the pantograph is raised again, it will cause high-voltage discharge and grounding, which may cause the pantograph slide plate to bond with the catenary, or burn the catenary, causing major failures. During the operation of the locomotive, DC 110V is the most important control power supply, and its insulation to the ground will directly affect the operation control of the electric locomotive. Contents of the invention [0003] Aiming at the problems existing in the prior art, the present invention aims to prov...