适用于站域后备保护的智能变电站站间信息传输方案  

A communication scheme between smart substations for substation-area backup protection

作　　者：刘益青[1] 高厚磊[2] 李乃永 王成友[1] 闫红华 

机构地区：[1]济南大学自动化与电气工程学院,山东济南250022 [2]山东大学电气工程学院,山东济南250100 [3]山东电力调度控制中心,山东济南250100 [4]山东迪生电子有限公司,山东济南250001

出　　处：《电力系统保护与控制》2015年第2期96-102,共7页Power System Protection and Control

基　　金：山东省自然科学基金(ZR2014EEM039);济南大学博士科研启动基金项目(XBS1408)

摘　　要：要实现基于电流差动原理的智能变电站站域后备保护,需要获取相邻变电站的SV和GOOSE信息,为此研究了变电站之间的信息传输方案。满足带宽和实时性要求的SV传输方案有以下三种:借用光纤纵差保护装置转发的方案、采用专用数据转发装置的方案和广域以太网扩展变电站过程层网络的方案。经过性能对比分析,第三个方案互操作性好、数据带宽高,最适合于站域后备保护的实际应用。对第三个方案从SV数据的同步性、数据通道带宽、通信传输距离及可靠性、数据传输延时等几个方面进行了初步分析,表明采用该方案在智能变电站之间透明传输SV和GOOSE信息是可行的。最后指出了实用化过程中需要进一步研究的内容和可能存在的问题。To realize the substation-area backup protective relay which adopts current differential principle in smart substation, it is necessary to obtain the sampled values （SV） and generic object oriented substation event （GOOSE） from adjacent substations. Therefore the communication schemes between smart substations are researched. There are three schemes suitable for SV transmission with high bandwidth and real-time characteristic, as follows： the solution by means of optical differential protection device, the solution by dedicated data forwarding device and the solution of extending process layer network by wide-area Ethernet. After a comparative analysis, the third solution with good interoperability and high bandwidth is the most suitable scheme for practical application of substation-area backup protection. The paper makes a preliminary theoretical analysis from several aspects, such as SV synchronization method, data channel bandwidth, communication distance, communication reliability and transmission delay. So it draws a conclusion that transmitting SV transparently between smart substations by the third solution is feasible. In the end, a few possible issues need further study is dedicated.

关 键 词：智能变电站 站域后备保护 站间信息传输 IEC 61850 采样值 SDH 

分 类 号：TM63[电气工程—电力系统及自动化] TM774