In order to achieve the goal of online condition monitoring of high voltage insulator

its power supply of high voltage insulator parameters online monitoring system is one of the key problems

and it requires that the power has the characteristics of long-term free maintenance

high reliability and stability.This paper designs photovoltaic power supply of battery and super capacitor hybrid energy storage

and puts forwards energy management strategy according to the characteristics of the load and energy storage system. Photovoltaic power generation system adopts one-way DC/DC converter for maximum power control and bi-directional DC/DC converter to achieve super capacitor and battery’s energy bi-directional exchange with the system. The results show that the control strategy can maintain stability of the DC bus voltage when the output power of photovoltaic battery fluctuates

and can effectively reduce the cycle times of charge and discharge of the battery

optimize charge and discharge performance

prolong the service life

and ensure maximum uninterrupted power supply.