摘要
针对智能电网局部放电检测技术实际运用中的问题,对ADF4350频率合成器的基本原理与工作特性进行了研究,应用了锁相环、滤波器组、同步信号提取、程控开关等技术,提出了一套基于AVR Atmega128单片机控制ADF4350的硬件电路结构和软件程序设计方法,得到了一种能实际应用在智能电网局部放电监测的多频段信号源。现场工作人员通过用户端操作板上的简单操作,进行模式选择与设定,就可以方便地实现现场在线监测。研究结果表明,该信号源覆盖了局放信号的全部频点,现场测试时锁相效果良好、携带方便、性能可靠。
Aiming at the discharge test problems in the practical application of the smart grid, the ADF4350 frequency synthesizer＇s basic principle and working characteristics were reseaehed. Using the technologies such as phase lock loop, filter group, extraction of synchronization signal, program-controlled switch, through AVR Atmega128 chip, a hardware circuit control structure and software program design method of ADF4350 was presented, a set of multiband signal source which can apply in the smart grid partial discharge monitoring was gotten. With a simple operation in client dashboard, the field staff can conveniently realize the online monitoring after the mode selection and setting. The results indicate that the signal source can cover all signal frequency, in the field test, phase locking effect is good, easy to carry, reliable in performance.
出处
《机电工程》
CAS
2015年第5期722-726,共5页
Journal of Mechanical & Electrical Engineering
基金
浙江省重大科技专项重点工业资助项目(LZ12E07001)
关键词
频率合成器
信号源
滤波器组
同步信号
frequency synthesizer
signal source
filter group
sync signal
