基于FPGA的直流断路器仿真建模与延时补偿算法  

Simulation Study and Time Delay Compensation Algorithm for DC Circuit Breaker Based on FPGA

作　　者：林畅 庞辉 常彬 刘栋 翟雪冰 高路 闫鹤鸣 LIN Chang;PANG Hui;CHANG Bin;LIU Dong;ZHAI Xuebing;GAO Lu;YAN Heming(Beijing Key Laboratory of DC Grid Technology ＆ Simulation （Global Energy Interconnection Research Institute Co., Ltd.）, Changping District, Beijing 102209, China;Beijing Key Laboratory of High Power Electronics（Global Energy Intercormection Research Institute Co., Ltd.）, Changping District, Beijing 102200, China;Global Energy Interconnection Research Institute Co., Ltd., Changping District, Beijing 102209, China)

机构地区：[1]直流电网技术与仿真北京市重点实验室(全球能源互联网研究院有限公司),北京市昌平区102209 [2]大功率电力电子北京市重点实验室(全球能源互联网研究院有限公司),北京市昌平区102200 [3]全球能源互联网研究院有限公司,北京市昌平区102209

出　　处：《电网技术》2018年第5期1417-1423,共7页Power System Technology

基　　金：国家重点研发计划项目(2017YFB0902400)~~

摘　　要：作为保证柔性直流系统安全可靠运行的关键设备之一,直流断路器在建立直流电网,提高电网运行灵活性和供电可靠性等方面发挥着重要的作用,对直流断路器的仿真建模研究十分有必要。为在节约计算资源的同时准确模拟断路器各部分的特性,提出了一种基于后退欧拉法的直流断路器等效简化方法。首先,在电力系统仿真软件PSCAD/EMTDC上验证了该等效简化方法的精确性。在此基础上,建立了基于现场可编程门阵列（field-programmable gate array,FPGA）的混合直流断路器等效模型,并在电力系统数模混合仿真平台上搭建了整套测试系统,同时采用了一种基于数据传输指数衰减的延时补偿方法,仿真结果表明此方法可以增加仿真系统的精度,并能满足电力系统数模混合多时间尺度多速率的实际仿真验证需求。As key equipment in maintaining safe and reliable operation of DC system, DC circuit breaker plays a vital role in establishing a DC grid, improving both flexibility and reliability of the grid. It is of significant importance to conduct modelling study for DC circuit breaker. In order to obtain an accurate response of DC breaker and maximize utilization of computational resources, this paper proposes an efficient DC breaker modelling method based on backward Euler theory. Firstly, the proposed modelling method is verified in PSCAD/EMTDC. Next, this paper conducts FPGA based hybrid breaker modelling study and a breaker testing system is established in hybrid power system simulation platform. Finally, this paper proposes a delay compensation method based on exponential decay of data transmission. Simulation results prove accuracy of the proposed method. Main contribution of this paper is a new breaker modelling method, and a communication delay compensation algorithm suitable for hybrid power system simulation platform.

关 键 词：直流故障 直流断路器 等效建模 柔性直流输电 延时补偿 

分 类 号：TM721[电气工程—电力系统及自动化]