摘要
有源配电网实时仿真是研究系统动态特性、模拟实际运行环境、测试保护控制策略的有效手段。文中利用现场可编程门阵列(FPGA)的固有高并行度、深度流水线、分布式存储资源,设计并开发了基于多FPGA的具有多层级并行架构的有源配电网实时仿真器。面向实时仿真器的可扩展性需求,首先采用物理解耦的方法对有源配电网的数学模型进行粗粒度分割,进而将得到的子系统进行细粒度模型分割。在此基础上将分割后的模型映射到对应的FPGA中,通过协调分配硬件资源,形成系统级—单元级—模块级—元件级多层级并行的实时仿真架构。针对含多个光伏发电单元、储能单元的配电网实现了实时仿真,通过与PSCAD/EMTDC结果的比较,验证了提出的多层级并行架构的有效性。
Real-time(RT)simulation of active distribution networks(ADNs)is an effective method for studying the dynamic behaviors of the real system,simulating the real operation environment and testing the protecting control strategies.A multiple field programmable gate array(FPGA)based RT simulator with multi-level parallel architecture for ADNs is designed,which takes advantage of the massive parallelism,deep pipeline,and rich distributed memories of FPGA.In order to satisfy the expandability of the RT simulator,the ADN is firstly decoupled into subsystems by using the physical decoupling method,i.e.coarse-grained partition.Then each subsystem is split into segments according to the components type,i.e.fine-grained partition.Finally,these segments are mapped into the corresponding FPGA hardware resources.The 4-level parallel simulation architecture of system-level,unit-level,module-level and element-level is constructed by the hardware resource distribution and coordination mechanism.RT simulation of a typical active distribution network including photovoltaic(PV)generation units and energy storage units is achieved on a 4-FPGA based simulator.Simulation results are compared with those of PSCAD/EMTDC to validate the correctness and effectiveness of the multi-level parallel architecture design.
作者
李鹏
王智颖
王成山
富晓鹏
宋毅
LI Peng;WANG Zhiying;WANG Chengshan;FU Xiaopeng;SONG Yi(Key Laboratory of Smart Grid of Ministry of Education(Tianjin University),Tianjin 300072,China;State Grid Economic and Technological Research Institute Co.Ltd.,Beijing 102209,China)
出处
《电力系统自动化》
EI
CSCD
北大核心
2019年第8期174-187,共14页
Automation of Electric Power Systems
基金
国家自然科学基金资助项目(51577127)~~
关键词
有源配电网
实时仿真
现场可编程门阵列
多层级并行架构
active distribution network(ADN)
real-time simulation
field programmable gate array(FPGA)
multi-level parallel architecture
