【摘要】 为解决高压输电线路在线监测装置的供电问题，利用Saber软件对CT取能电源进行优化设计。该电源利用线圈由线路获取能量，经过整流、滤波、稳压过程将其转变为可供监测设备使用的电能。其中，通过取能磁芯的选取防止电源易饱和情况；整流电路采用肖特基二极管可有效降低处理过程中的电压损失；滤波电路采用超级电容不仅能够输出波动较小的直流电压，还能够保证瞬时大功率设备的正常工作；降压电路采用闭环控制可得到稳定输出的直流电压。结果表明该CT取能电源在输电线路5～1000 A的电流变化范围内，铁芯不饱和，输出电压波形不发生畸变，电源能以5 V直流电压实现稳定输出，满足监测设备的供电要求。更多还原

【Abstract】 In order to solve power supply problem of on-line monitoring device for high voltage transmission lines, Saber software is used to optimize design of CT-based power sources. The power supply uses the coil to obtain energy from the line, and after rectification, filtering, and voltage stabilization, it is converted into electrical energy that can be used by monitoring equipment. Among them, the selection of energy-taking magnetic core prevents the source from being easily saturated. The rectifier circuit using Schottky diode can effectively reduce the voltage loss in the process. The filter circuit using super capacitor can not only output DC voltage with small fluctuation, but also ensure the normal operation of instantaneous high power equipment. The step-down circuit adopts closed-loop control to obtain a stable output DC voltage. The results show that the CT-based power source will not be saturated in current range of 5～1000 A of the transmission line, and the output voltage waveform will not be distorted. The source can achieve stable output with 5 V DC voltage, which meets the requirements of monitoring equipment.更多还原