A DC high voltage test power supply voltage stabilization control system

Abstract

The invention discloses a voltage stabilization control system for a direct-current high-voltage test power source. The voltage stabilization control system comprises a voltage regulator, a bidirectional thyristor, a high-voltage boosting transformer, a rectifying device, a voltage divider, a voltage-current detection device and a voltage regulation and stabilization device. An input end of the voltage regulator is connected with an external power source, one output end of the voltage regulator is outputted to a test object sequentially through the bidirectional thyristor, the high-voltage boosting transformer and the rectifying device, the voltage divider is parallelly connected with the test object, and the voltage-current detection device is connected with the voltage divider. A feedback voltage output end of the voltage-current detection device is connected with a feedback voltage input end of the voltage regulation and stabilization device, the other output end of the voltage regulator is connected with a reference voltage input end of the voltage regulation and stabilization device, and an output end of the voltage regulation and stabilization device is connected with a control end of the bidirectional thyristor. The voltage stabilization control system for the direct-current high-voltage test power source has the advantages of effectiveness in restraining of output ripples, automation in correction of controlled deviations, quickness in response, high voltage stability, high disturbance resistance, structural stability and reliability, simplicity and convenience in operation and simplicity in maintenance.

Description

technical field [0001] The invention relates to the technical field of electrical engineering, in particular to a voltage stabilization control system for a DC high voltage test power supply. Background technique [0002] Equipment performance is directly related to voltage, and changes in voltage will affect the stability of equipment performance or output parameters. In practical applications, it is required that the DC output voltage of the voltage stabilizing device remains stable regardless of changes in the AC power supply or load resistance. The quality of the voltage regulation control system is related to the ripple coefficient, response speed, and voltage stability. [0003] During the artificial direct current pollution test, the output voltage of the test power supply shall remain unchanged from the beginning to the end. However, the leakage current of polluted insulators has the characteristics of long duration, fluctuation and large amplitude. The leakage cur...

AI Technical Summary

Problems solved by technology

However, compared with the closed-loop control, the open-loop control cannot automatically correct the deviation of the controlled quantity, and the anti-disturbance performance is poor.

Images