电能质量在线校准系统设计

针对电能质量分析仪在传统校准过程中遇到的校准项目和校准点多、耗时长、操作人员需要全程操作和手工记录数据容易产生人为误差等问题，设计了电能质量在线自动校准系统。该系统以 LabVIEW 2012为软件开发平台， Fluke 6100B为标准信号源，计算机和标准信号源之间通过NI USB转GPIB连接，采用VISA函数、SCPI标准命令和功能完善的状态机架构，可实现自动控制标准源的输出，完成可多种厂家、多种型号电能质量分析仪被校准设备的信号采集和显示，并可一键生成报告。程序采用模块化设计，降低了不同功能代码之间的耦合度，当设备或用户需求发生变化时，可以方便地完成软件的更新和升级。电能质量在线校准系统大大减少了由于人工操作所带来的误差，提高了校准的准确性和效率，节约了人员和时间成本。

Design of the power quality online calibration system

The online power quality automatic calibration system is designed for the problems that the power quality analyzer encounters many calibration items and calibration points in the traditional calibration process, takes a long time, the operator needs to operate the whole process, and the error caused by the manual recording of data. This system uses LabVIEW 2012 as the software development platform and Fluke 6100B as the standard signal source. The computer and the standard signal source are connected through NI USB to GPIB. The program is designed uses virtual instrument software architecture(VISA) functions and standard command for programmable instruments(SCPI) standard order and fully functional state machine architecture to automatically control the output of the standard source. Complete the signal acquisition and display of the calibrated equipment of various manufacturers and models of power quality analyzers, and generate reports with one click. The program adopts a modular design, which reduces the coupling between different functional codes. When equipment or user requirements change, software updates and upgrades can be easily completed. The power quality online calibration system greatly reduces errors caused by manual operation, improves calibration accuracy and efficiency, and saves personnel and time costs.