一种基于增量式编码器的冲击发电机转速与相位测量方案  

A New Speed and Phase Measurement Scheme of Short Circuit Generator Based on Incremental Encoder

作　　者：汪海波[1] 万德春[1] 洪深[1] 

机构地区：[1]南瑞集团公司/国网电力科学研究院,江苏南京211106

出　　处：《江苏电机工程》2016年第6期70-72,76,共4页Jiangsu Electrical Engineering

摘　　要：大容量试验中需要采集冲击发电机的电压信号,以满足高压断路器试验过程中对合闸相角的控制要求。采用交直流控制发电机测量方式容易受到环境温度的影响而发生温漂,且精度低、体积大,逐渐被全数字测速方式替代。与控制发电机方案相比,基于编码器的全数字测控方法有着明显的优势。文中设计了一种基于增量式编码器的冲击发电机转速与相位测量方案,并介绍了该方案的原理、结构、优点及信号的抗干扰问题,该方案可提高冲击发电机转速和相位同步信号的准确度与精度,为大容量试验过程控制合闸相角提供了科学的依据。Synchronous voltage signal of short circuit generator needs to be gathered in the high power testing, in order to meet the closing phase angle control requirements in high voltage circuit breaker test process. Affected by environmental temperature, the measuring way controlled by AC/DC generator is prone to temperature drift, low accuracy and big volume, so it is gradually replaced by digital measurement way. Compared with the control generator scheme, the full digital control method based on the encoder has obvious advantages. A new speed and phase measurement scheme of short circuit generator based on the incremental encoder is designed in this paper. And the principle, structure, advantages of the scheme and the signal anti-interference problem are introduced. With this method, the speed and reference phase signal accuracy and precision of the short circuit generator are improved, which gives the foundation for closing phase angle control of large capacity test process.

关 键 词：冲击发电机 控制发电机 同步信号 磁电式编码器 光电转换 

分 类 号：TM31[电气工程—电机]