具有异常分析功能的通用型数字量输入式合并单元
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摘要
数字量输入式合并单元是变电站数字采样基本设备,通过合并电子式互感器数字量报文,实现变电站电气间隔的数字化采样。目前各厂家电子式互感器与数字量输入式合并单元间互操作性不强,输出易产生异常数据而影响可靠性,无法满足当前智能变电站对数字化采样的要求。对数字量输入式合并单元的多规约兼容、异常采样数据监测、链路状态分析等技术进行了研究,并在物理装置上实现。试验测试表明,研究成果可以提升数字采样系统的互操作性,提高数字化采样的可靠性,从而提升变电站智能化水平。
Universal digital-input merging unit is an important device in smart substation.By receiving and merging digital message from electronic transformer,digital merging unit transfers sampling data to substation.At present,the interoperability between different electronic transformers and digital merging units is low,which affects the reliability of output data.The requirements of digital sampling in smart substation cannot be satisfied.Multi-protocol compatibility,outlier data detection and link state analysis are explored for digital merging unit and the functions are implemented on a physical device.Basing on the experimental results,it shows that the exploration can increase intelligent level for substation by improving its compatibility for digital sampling system and reliability for digital sampling.
Universal digital-input merging unit is an important device in smart substation.By receiving and merging digital message from electronic transformer,digital merging unit transfers sampling data to substation.At present,the interoperability between different electronic transformers and digital merging units is low,which affects the reliability of output data.The requirements of digital sampling in smart substation cannot be satisfied.Multi-protocol compatibility,outlier data detection and link state analysis are explored for digital merging unit and the functions are implemented on a physical device.Basing on the experimental results,it shows that the exploration can increase intelligent level for substation by improving its compatibility for digital sampling system and reliability for digital sampling.
引文
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[3]李妍,车勇,单强,等.智能变电站二次系统在线监测评估的研究[J].电力系统保护与控制,2016,44(10):66-70.
[4]叶远波,孙月琴,黄太贵,等.智能变电站继电保护二次回路在线监测与故障诊断技术[J].电力系统保护与控制,2016,44(20):148-153.
[5]李英明,郑拓夫,周水斌,等.一种智能变电站合并单元关键环节的实现方法[J].电力系统自动化,2013,37(11):93-98.
[6]路光辉,邓宇,周钟,等.一种基于FT3光纤通信的新型避雷器监测方案[J].电力系统保护与控制,2015,43(20):119-124.
[7]闫志辉,周水斌,郑拓夫.新一代智能站合并单元智能终端集成装置研究[J].电力系统保护与控制,2014,42(14):117-121.
[8]夏梁,梅军,郑建勇,等.基于IEC61850-9-2的电子式互感器合并单元设计[J].电力自动化设备,2011,31(11):135-138.
[9]曹楠,李刚,王冬青.智能变电站关键技术及其构建方式的探讨[J].电力系统保护与控制,2011,39(5):63-68.
[10]潘磊,李斌,杨光,等.交流系统故障时统一潮流控制器处理策略[J].电力工程技术,2017,36(6):132-137.
[11]于同伟,蔡玉朋,金世鑫.一种面向智能变电站的广域备自投系统的应用[J].电力系统保护与控制,2015,43(9):129-135.
[12]李鹏,林金娇,孔祥平.统一潮流控制器在苏南500 k V电网中的应用[J].电力工程技术,2017,36(1):20-24.
[13]Communication networks and systems in substations Part8-1:Specific communication service mapping(SCSM)——Mappings to MMS(ISO/IEC 9506 Part 1 and Part 2):IEC 61850-8-1[S].
[14]合并单元技术条件:DL/T 282—2012[S].
[15]谢坤,余华武,陈福锋,等.一种兼容Comtrade格式的新型智能终端[J].电力系统自动化,2016,40(4):111-114.
[16]刘振亚.智能电网技术[M].北京:中国电力出版社,2010.
[17]杨冠城.电力系统自动装置原理[M]. 4版.北京:中国电力出版社,2007.
[18]王同文,谢民,孙月琴,等.智能变电站继电保护系统可靠性分析[J].电力系统保护与控制,2015,43(6):58-66.