This paper probes into the problem of voltage sag faced by the transmitting base from two aspects of prevention and treatment of voltage sag

deeply analyzes the demand of sensitive load of transmitting base on voltage quality

and studies the generation mechanism of voltage sag in the grid where the transmitting base is located

determines the main causes of voltage sag and gives the corresponding preventive measures. Combined with the existing measures of voltage sag treatment

6 kinds of voltage sag treatment schemes in power grid side and 2 kinds of voltage sag treatment schemes in consumer side are preliminarily worked out. Finally

considering the effect and investment

an effective solution to the voltage sag problem of the launch site is proposed.