基于LabVIEW的数字式密度继电器智能校验系统设计  

LabVIEW-Based System Design for Intelligent Calibration of Digital Density Relay

作　　者：陈彪 刘威峰 岳利强 张文涛 顾理强 任伟东 潘银莲 CHEN Biao;LIU Weifeng;YUE Liqiang;ZHANG Wentao;GU Liqiang;REN Weidong;PAN Yinlian(State Grid Guyuan Power Supply Company,Guyuan 756000,China;Electric Power Research Institute,State Grid Ningxia Electric Power Co.,Ltd.,Yinchuan 750000,China;Nanjing Gupan Automation Technology Co.,Ltd.,Nanjing 210000,China)

机构地区：[1]国网固原供电公司,宁夏固原756000 [2]国网宁夏电力有限公司电力科学研究院,宁夏银川750000 [3]南京固攀自动化科技有限公司,江苏南京210000

出　　处：《自动化仪表》2023年第11期59-63,68,共6页Process Automation Instrumentation

摘　　要：数字式密度继电器的灭弧性能和绝缘性能优异,是供电安全保障的关键部分。为了解决当前数字式密度继电器校验误差的问题,设计了基于LabVIEW的数字式密度继电器智能校验系统。系统硬件包括工控机、温控装置、传感器、气压调节模块。其中,工控机由过程输入/输出(I/O)通道、I/O设备构成。温控装置实现温度偏差与波动数值的调控。传感器包括压力和温度传感器。气体压力调控机构由驱动机构、特制气缸等构成。采用LabVIEW设计系统校验软件。校验时采用相位差算法进行信号相位差计算。测试了系统的功能与性能。测试结果表明,该系统能够实现数字式密度继电器闭锁功能与报警功能的校验,压力示值和温度补偿误差均较低,具有重要的实际应用价值。Digital density relay has excellent arc extinguishing performance and insulation performance,which is a key part of power supply safety and security.To solve the current problem of digital density relay calibration error,a LabVIEW-based digital density relay intelligent calibration system is designed.The system hardware includes industrial control machine,temperature control device,sensor,air pressure adjustment module.Among them,the industrial control machine consists of process input/output(I/O)channels and I/O devices.The temperature control device realizes the regulation of temperature deviation and fluctuation values.The sensors include pressure and temperature sensors.The gas pressure regulating mechanism consists of driving mechanism,special cylinder and so on.LabVIEW is used to design the system calibration software.The phase difference algorithm is used to calculate the signal phase difference during calibration.The function and performance of the system are tested.The results show that the system can realize the calibration of digital density relay blocking function and alarm function,and the pressure value and temperature compensation error are low,which has important practical application value.

关 键 词：实验室 虚拟仪器 数字式密度继电器 智能校验系统 工控机 温控装置 LABVIEW 

分 类 号：TH69[机械工程—机械制造及自动化]