基于ARM的智能分相动态无功补偿控制器的设计

在分析无功补偿工作原理的基础上,以共补与分补相结合的方式,通过晶闸管移相触发实现了电容器组的快速无电涌投切。装置采用32位ARM处理器单片机LPC1768,实时采样和存储数据,并且具有LCD中文显示和故障自动闭锁(过电压、欠电压及缺相保护)等功能。通过检测配电线路运行状态、实际无功功率和电压等参数,自动控制电容器组投切进行补偿。经试验验证,该装置控制准确、灵活、快速、稳定。

Design of Intelligent Dynamic Separated-Phase Reactive Compensation Controller Based on ARM

With analysis of reactive power compensation principle and the way of combining total and respective compensation, it realized the fast switching of capacitor banks without inrush current by thyristor phase- shift trigger. The device based on micro-controller LPC1768 32-bit ARM processor can sample and storage data in reall time. It also can display Chinese fonts with LCD and latch fault switching automatically （overvohage, undervoltage and phase protection）. With the detection of running state of distribution line automatically, capacitor would be controlled to switch as to the actual reactive power and voltage parameters. The experements prove that the device can control accurately ,flexibly, fast and stably.