高压断路器容性投切合成回路时序控制系统设计实验教学研究  

Experimental teaching research on the design of sequence control system of synthetic circuit for capacitive current switching

作　　者：韦宝泉 李泽文 余勇祥 曾建军 邓芳明 WEI Baoquan;LI Zewen;YU Yongxiang;ZENG Jianjun;DENG Fangming(School of Electrical and Automation Engineering,East China Jiaotong University,Nanchang 330013,China)

机构地区：[1]华东交通大学电气与自动化工程学院,江西南昌330013

出　　处：《电力科学与技术学报》2023年第4期257-264,共8页Journal of Electric Power Science And Technology

基　　金：江西省高等学校教学改革研究课题(JXJG-20-5-22)。

摘　　要：电力系统中需频繁使用高压断路器投切电容器组来进行无功补偿,从而提高功率因数、减少功率损耗以及稳定电压和提高供电质量,因此,容性电流投切实验对考核高压断路器性能至关重要。实验室多采用合成回路考核高压断路器的容性电流投切性能,为此,介绍一种新型容性电流投切合成回路和相应的操作时序控制系统,该合成回路利用三相交流电源的相角特性可直接做到电压源和电流源的相位同步,无需复杂的相位同步装置,操作更加简便可靠。回路时序控制系统主要由基于LabVIEW的上位机软件操作平台和基于Arduino的下位机控制单元构成,实现了智能化和可视化控制。系统设计考虑抗电磁干扰性能,采用光电技术传输信号,以避免高电压大电流信号对控制信号的干扰,经测试,整个控制系统在高压环境中表现出色。通过本实验教学,学生不仅能了解容性投切合成回路的控制方案,还能掌握时序控制原理,并培养动手操作和工程软件应用的基本能力,为未来相关岗位工作奠定基础。In power systems,the high-voltage circuit breakers are routinely deployed to switch capacitor banks,thus optimizing reactive power compensation,enhancing power factor,minimizing power losses,stabilizing voltage,and elevating power supply quality.Consequently,the capacitive current switching experiment plays a pivotal role in assessing the effectiveness of high-voltage circuit breakers.In laboratory settings,synthetic circuits are commonly employed to evaluate the capacitive current switching performance of these circuit breakers.This article introduces a novel synthesis loop for capacitive current switching,along with its corresponding operation sequence control system.This synthetic loop capitalizes on the phase angle characteristics inherent in three-phase AC power supplies,enabling direct synchronization of voltage and current sources without the complexity of additional synchronization devices.This simplifies the operations and enhances the reliability.The timing control system for the loop comprises an upper computer software operating platform based on LabVIEW and a lower computer control unit based on Arduino.This setup achieves intelligent and visual control.The system design prioritizes resistance against electromagnetic interference and employs photoelectric technology for signal transmission,mitigating potential disruptions caused by high-voltage and high-current signals on control signals.Following rigorous testing,the entire control system demonstrated remarkable performance under high-pressure conditions.This experimental teaching approach not only equips students with an good understanding of capacitive switching synthesis loop control schemes but also instills a comprehensive grasp of timing control principles.Moreover,it fosters practical skills in hands-on operation and proficiency in engineering software applications,providing a solid foundation for future roles in related positions.

关 键 词：高压断路器 无功补偿 容性电流投切 合成回路 实验教学 

分 类 号：TM561[电气工程—电器] G642.423[文化科学—高等教育学]