摘要
为解决智能变电站继电保护技术面临的板卡与插件多、复杂度高、装置体积大等问题,提出了一种芯片化保护的设计方案,基于ZYNQ平台进行了线路差动保护的架构设计及各功能模块开发。在采样值同步模块中选用拉格朗日二次插值法对采样报文进行重采样插值计算,并通过时标修正消除一次频率变动的影响;在傅里叶变换模块的设计中充分利用FPGA的硬件优势保证计算的速度和实时性,通过仿真和动模试验验证了线路差动保护的功能。基于该方案设计的芯片化线路保护装置已于某500 kV变电站投入试运行,且运行状况良好。
In order to solve the problems of many boards and plug-ins,high failure rate,large size of devices faced by relay protection technology in intelligent substations,a chip-based protection design is proposed,and the architecture design of line differential protec⁃tion and each functional module are developed based on ZYNQ platform.In the sampling value synchronization module,the Lagrang⁃ian quadratic interpolation method is chosen to resample and interpolate the sampling messages,and the effect of primary frequency change is eliminated by time scale correction;in the design of the Fourier transform module,the hardware advantage of field program⁃mable gate array(FPGA)is fully utilized to ensure the speed and real-time calculation,and the function of the line differential protec⁃tion is verified by simulation and dynamic mode test.The chip-based line protection device designed based on this scheme has been put into trial operation in a 500 kV substation,and it is in good operation.
作者
杨帜
高吉普
卢继平
辛明勇
张宸滔
YANG Zhi;GAO Jipu;LU Jiping;XIN Mingyong;ZHANG Chentao(Guiyang Power Supply Bureau of Guizhou Power Grid Co.,Ltd.,Guiyang 550004,China;State Key Laboratory of Power Transmission Equipment&System Security and New Technology(Chongqing University),Chongqing 400044,China;Electric Power Research Institute of Guizhou Power Grid Co.,Ltd.,Guiyang 550002,China;Hangzhou Xiaoshan Power Supply Company of State Grid Zhejiang Electric Power Co.,Ltd.,Hangzhou 311200,China)
出处
《南方电网技术》
CSCD
北大核心
2023年第5期91-99,共9页
Southern Power System Technology
基金
中国南方电网有限责任公司科技项目(066600KK52190014)
国家重点研发计划项目(2020YFB0906000)。
关键词
智能变电站
继电保护
片上系统
差动保护
重采样
intelligent substation
relay protection
system on chip(SOC)
differential protection
resampling
