基于OPNET的保护性能评估及采样值估计算法  

OPNET-based protection performance evaluation and sampling value estimation algorithm

作　　者：翟博龙 唐志军 宋福海 龙云波[3] Zhai Bolong;Tang Zhijun;Song Fuhai;Long Yunbo(Electric Power Research Institute of State Grid Fujian Electric Power Co.,Ltd.,Fuzhou 350007,China;State Grid Fujian Electric Power Co.,Ltd.,Fuzhou 350003,China;State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources,North China Electric Power University,Beijing 102206,China)

机构地区：[1]国网福建省电力有限公司电力科学研究院,福州350007 [2]国网福建省电力有限公司,福州350003 [3]华北电力大学、新能源电力系统国家重点实验室,北京102206

出　　处：《电测与仪表》2023年第4期160-166,共7页Electrical Measurement & Instrumentation

基　　金：国家电网有限公司科技项目(521304170028);国网福建省电力有限公司科技项目(521304180013)。

摘　　要：近来智能变电站数字继电保护技术快速发展,构建信息交互通道可进一步提高保护性能。文中对IEC 61850过程总线在110 kV/35 kV变电站以太网交换环结构中的性能进行评价,并利用OPNET对过程总线上采样数据报文性能进行评估。为了减轻采样值丢失和延迟对数字中继算法的影响,提出了采样值估计的修正措施,并提出了一种采样值估计算法。最后利用PSCAD/EMTDC和MATLAB对该算法进行了仿真验证,结果表明提出的算法精度高、计算量少,可用于任何数字保护功能。With the rapid development of digital relay protection technology in smart substation,the construction of information interaction channel can further improve the protection performance.In this paper,the performance of IEC 61850 process bus in 110 kV/35 kV substation Ethernet switch ring structure is evaluated,and the performance of sampling data message on process bus is evaluated by OPNET.In order to reduce the impact of the loss and delay of the sample value on the digital relay algorithm,a correction measure for the sample value estimation is proposed,as well as a sample value estimation algorithm.Finally,PSCAD/EMTDC and MATLAB are used to simulate and verify the proposed algorithm.The results show that the proposed algorithm has high accuracy and less computation,which can be used for any digital protection function.

关 键 词：数字继电保护 采样值估计 IEC 61850 智能变电站 性能评价 

分 类 号：TM711[电气工程—电力系统及自动化]