适用于智能电网的任意波形输出功率源  

Output power source of random waveform suitable for smart grid

作　　者：卢树峰 张竹[2] 陈刚 李红斌[2] 陈铭明 胡琛[2] 赵双双 田正其 

机构地区：[1]江苏省电力公司电力科学研究院,南京211103 [2]华中科技大学电气与电子工程学院,武汉430074

出　　处：《电测与仪表》2015年第21期123-128,共6页Electrical Measurement & Instrumentation

基　　金：国家电网公司科技资助项目(52100113058M)

摘　　要：智能电网中数字化设备的性能校验对功率源的要求较高,目前常见的功率源只能输出单一的正弦信号,无法满足该类设备性能校验的多种需求。文章研制了一套基于大功率运放的高精度标准程控功率源,输出的三相电压电流幅值、相位、频率均独立可调,输出信号波形任意,可满足智能电网中相关设备性能校验的多种需求。同时对于大功率运放耗散功率大,输出稳定度差的问题提出了一种基于多物理参数模型的过热保护,采取有效的反馈调节提高其输出稳定度和精度。The performance calibration of the digital equipment in the smart grid needs the power source with high quality. Currently, the common power source can output a single sinusoidal signal only, which can＇t satisfy various re- quirements of the performance calibration for digital equipments. This paper develops a high precision standard pro- grammable power source based on the power amplifier. The amplitude, phase and frequency of the output current and voltage can adjust independently, and it can output random waveform, which can meet the requirement of performance calibration well. Because of the high dissipated power and poor stability of the power amplifier, this paper proposes a overheating protection model based on several physical parameters, and takes an effective control based on the output feedback to improve its stability and accuracy.

关 键 词：校验 功率放大器 任意波形 稳定度 过热保护 

分 类 号：TM919[电气工程—电力电子与电力传动]