基于DSP的高压设备在线监测系统测试仪研制  

Development of Testing Instrument for On-line Monitoring System of High Voltage Equipment Based on DSP

作　　者：杨达亮[1] 卢子广[1] 杭乃善[1] 

机构地区：[1]广西大学电气工程学院,南宁530004

出　　处：《电测与仪表》2013年第8期68-71,共4页Electrical Measurement & Instrumentation

摘　　要：为实现对变电站高压设备绝缘在线监测的目的,设计了基于数字信号处理器(DSP)的分布式在线监测系统。介绍变电站高压设备在线监测系统的组成,重点讲述测试仪的工作原理和设计方法。DSP芯片采用TMS320VC5416,A/D芯片为六路同时采样的AD73360;测试仪采用数字低通滤波器(LPF)和改进的快速傅里叶变换(FFT)等算法和双向环网光纤通信技术,介质损耗分辨率可达±0.1%。在220kV变电站的应用表明此测试仪有效提高系统的测量准确性和稳定性。The paper introduces the components of on-line monitoring system for high voltage equipment in substation and emphasizes the principle and design method of testing instrument in order to design a distributed on-line monitoring system for the insulation of high-voltage electric equipment based on the digital signal processor （DSP）. The DSP is the TMS320VC5416 and the A/D is the six input-channel simuhaneous sampling sigma-delta A/ D converters AD73360. The testing instrument uses the digital LPF, the improved FFT algorithm and bi-directional ring network technology with optical fiber communication, which makes the resolution of dielectric loss be less than ±0.1 degree. The application of the instrument improves the measurement veracity and stability in 220kV substations.

关 键 词：在线监测 测试仪 DSP 光纤通信 算法 

分 类 号：TM835[电气工程—高电压与绝缘技术]