基于RTDS的柔性直流系统保护教学实验设计  

Teaching experimental design of flexible DC system protection based on RTDS

作　　者：魏秀燕 邹贵彬[1] 丛伟[1] 吕静[1] 张烁 李军徽 WEI Xiuyan;ZOU Guibin;CONG Wei;LYU JING;ZHANG Shuo;LI Junhui(School of Electrical Engineering,Shandong University,Jinan 250061,China;School of Control Science and Engineering,Shandong University,Jinan 250061,China;Key Laboratory of Modern Power System Simulation and Control&Renewable Energy Technology,Ministry of Education(Northeast Electric Power University),Jilin 132012,China)

机构地区：[1]山东大学电气工程学院,山东济南250061 [2]山东大学控制科学与工程学院,山东济南250061 [3]现代电力系统仿真控制与绿色电能新技术教育部重点实验室(东北电力大学),吉林吉林132012

出　　处：《实验技术与管理》2024年第12期178-185,共8页Experimental Technology and Management

基　　金：现代电力系统仿真控制与绿色电能新技术教育部重点实验室(东北电力大学)开放课题(MPSS2024-06);山东大学本科教育教学改革研究一般项目(2024Y061)。

摘　　要：新型电力系统中的电源特性、电网形态呈现多样化,对传统电气实验教学带来挑战。该文针对柔性直流输电系统保护,设计了一种基于大型设备RTDS的新型电力系统保护教学实验方案。以柔性直流系统作为实验对象,设计了系统仿真模型搭建、闭环测试平台搭建、直流保护实验及能力提升四个环节,旨在提升学生的创新能力、实际动手能力和科研能力。实验中使设备专管实验员担任实验课教师,并加入安全培训和操作培训,从而减少设备故障率。通过分小组实验方式解决大型设备数量少、科研和教学时间冲突问题,提高了大型设备的共享程度。[Objective]Due to the high proportion of new energy and power electronics in the new power system,as well as new forms of power grids,traditional electrical experimental teaching is facing significant challenges.Traditional teaching laboratories lack a new power system experimental platform,and the experimental teaching mode is outdated,making it very difficult to simulate the various forms and different penetration rates of new energy nodes.[Methods]A new power system teaching experiment based on a real-time digital simulator(RTDS)was designed to address the aforementioned problems by constructing a new power system model and a closed-loop experimental scenario.In addition,a self-developed DC protection prototype is used to design a flexible DC system protection teaching experiment.First,a Peterson equivalent circuit is applied to analyze the fault characteristic at both ends of the flexible DC line.It can be found that when an internal pole-to-pole fault occurs,the polarity of the line-mode fault current component(LFCC)at both ends of the line is the same.When an external pole-to-pole fault occurs,the polarity of the LFCC at both ends of the line is opposite.Then,the pilot protection based on the LFCC for the flexible DC grid is constructed,and the DC protection prototype is developed.Second,the flexible DC system protection experiment based on the RTDS is designed.Students can build the flexible DC system model in the RTDS software and connect the DC protection prototype to the closed-loop testing platform.Then,the DC protection experiment can be conducted by setting internal and external faults in the flexible DC system.To provide students with a more intuitive understanding of the differences between the RTDS and ordinary simulation software,PSCAD is added as a skill enhancement component to motivate the research enthusiasm and innovation ability in students.In addition,safety training and operation training are added to the experiment,and the experimental teaching is carried out by the equipment administrat

关 键 词：新型电力系统 大型设备 实验教学 直流保护装置 

分 类 号：TM77[电气工程—电力系统及自动化]