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山东科技大学 电气与自动化工程学院,山东 青岛,266590
收稿日期:2014-12-23,
修回日期:2015-01-15,
纸质出版日期:2015-08-05
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李清泉, 于群, 冯知海, 单才伟, 陈晶. 变压器微机保护实验平台的液晶显示设计[J]. 液晶与显示, 2015,30(4): 641-646
LI Qing-quan, YU Qun, FENG Zhi-hai, SHAN Cai-wei, Chen Jing. Design of liquid crystal display for experimental platform about transformer protection based on microprocessor[J]. , 2015,30(4): 641-646
李清泉, 于群, 冯知海, 单才伟, 陈晶. 变压器微机保护实验平台的液晶显示设计[J]. 液晶与显示, 2015,30(4): 641-646 DOI: 10.3788/YJYXS20153004.0641.
LI Qing-quan, YU Qun, FENG Zhi-hai, SHAN Cai-wei, Chen Jing. Design of liquid crystal display for experimental platform about transformer protection based on microprocessor[J]. , 2015,30(4): 641-646 DOI: 10.3788/YJYXS20153004.0641.
为了使工作人员深入了解变压器的保护原理
加强对变压器的保护工作
设计了基于TMS320F28335+STC12LE5A60S2的变压器微机保护实验平台
其中TMS320F28335实时采集处理变压器两侧的电压电流信息
承担计算、通信和控制开入开出等任务
STC12LE5A60S2则通过串口通信方式接收来自DSP的数据信息
并控制TFT液晶显示模块MD070SD进行显示。通过外部按键控制
可以使MD070SD 显示3种界面:定值整定界面、数据显示界面和保护测试界面
同时将单纯的文本显示转换成图文并茂的形式
使得实验原理简单形象
便于理解。本文给出了串口通信和液晶显示的硬件控制电路
并对液晶模块的3种显示界面进行了详细说明。测试结果表明
该平台能可靠实现数据显示和保护测试等功能
实时性好
可视性强。
The design of the experimental platform about microprocessor-based transformer protection is based on TMS320F28335 and STC12LE5A60S2 in order to make the staff to understand the principles of transformer protection deeply and strengthen the work of transformers' protection.The TMS320F28335 acquires and processes the real-time data about voltage and current of both sides of the transformer
undertaking the tasks of calculation
communication and controlling the switch quantity.The STC12LE5A60S2 receives data from the DSP through the serial communication and controls TFT LCD module MD070SD.The MD070SD can be controlled to show 3 kinds of interfaces: setting interface /data display interface and the protection test interface through an external button.This paper presents the hardware control circuit both of the serial communication and the liquid crystal display
and gives a detailed account of the LCD module's 3 display interfaces.Results of the tests show that the platform can achieve the function of data display and protection test reliably
its real-time and visibility can meet the display requirements of the protection equipments for transformer.
贺家李,李永丽,董新洲,等. 电力系统继电保护原理 [M].北京:中国电力出版社,2010. He J L, Li Y L, Dong X Z, et al. Principle of Power System Protection[M].Beijing:China Electric Power Press,2010.(in Chinese)[2] 于群,曹娜.电力系统微机继电保护 [M].北京:机械工业出版社,2010. Yu Q, Cao N.Microcomputer Relay Protection of Power System[M].Beijing: China Machine Press,2010.(in Chinese)[3] 李彦丽. 基于DSP的变压器差动保护装置的研究 [D].天津:河北工业大学,2007. Li Y L.The Study on differential protection device for transformers [D].Tianjin: Hebei University of Technology,2007.(in Chinese)[4] 任婷会. 基于DSP的微机变压器保护装置的研究 [D].兰州:兰州理工大学,2007. Ren T H.Researeh on digital protection deviee of power transformer Base on DSP [D].Lanzhou: Lanzhou University of Technology,2007.(in Chinese)[5] 张雪松. 数字式变压器差动保护若干问题研究 [D].杭州:浙江大学,2006. Zhang X S.Researeh on digital differential protectionfor power transformer [D].Hangzhou: Zhejiang University,2006.(in Chinese)[6] 刘陵顺,高艳丽,张树团,等. TMS320F28335 DSP原理及开发编程[M].北京:北京航空航天大学出版社,2014. Liu L S, Gao Y L, Zhang S T, et al. TMS320F28335 DSP Principle and Development Programming[M].Beijing: Beihang University Press,2014.(in Chinese)[7] 潘卫卫,郑常宝,高杰,等. 光伏控制逆变一体机的人机接口模块设计 [J]. 液晶与显示, 2014,29(6):963-968. Pan W W, Zheng C B, Gao J, et al. Design of human-machine interface module of PV control and inverter integrated vehicle[J]. Chinese Journal of Liquid Crystals and Displays,2014,29(6): 963-968.(in Chinese)[8] 吴雄英,秦开宇,谢兴红. DSP与单片机之间串行通信的设计与实现 [J]. 计算机工程与科学, 2009,31(5):132-136. Wu X Y, Qin K Y, Xie X H.Design and implementation of the serial communication between the microcontroller and the DSP [J]. Computer Engineering and Science,2009,31(5): 132-136.(in Chinese)
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