“三网合一”模式下智能变电站时钟系统运维策略研究
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摘要
传统变电站电气量采用直采方式,即电缆直接连接,差动类保护装置不受时钟影响,而"三网合一"模式下的智能变电站,时钟异常或延时可能导致差动类保护装置误动作。时钟系统不再是简单对站内设备授时,它已成为继电保护系统的一部分,是关系二次系统安全稳定运行的核心设备。如何使IEC61588时钟同步报文满足"三网合一"要求,消除差动类保护装置误动作的安全隐患,保证时钟系统正常运维是讨论和研究的重点。
In the traditional substation,electrical quantities use direct mining methods( direct cable connection). The differential protection device is without influence of the clock,the abnormal or delayed clock may cause differential protection device malfunction in the integration of three networks. At this time clock system is no longer a simple device for timing the station,it has become part of protection system. The clock system is vital core equipment. IEC61588 clock synchronization message how to meet the integration of three networks eliminates security risks of the differential protection device malfunction. Ensuring the normal operation and maintenance of the clock system is discussed and researched.
In the traditional substation,electrical quantities use direct mining methods( direct cable connection). The differential protection device is without influence of the clock,the abnormal or delayed clock may cause differential protection device malfunction in the integration of three networks. At this time clock system is no longer a simple device for timing the station,it has become part of protection system. The clock system is vital core equipment. IEC61588 clock synchronization message how to meet the integration of three networks eliminates security risks of the differential protection device malfunction. Ensuring the normal operation and maintenance of the clock system is discussed and researched.
引文
[1]李华强,李洪学,王英明.基于主时钟智能决策的变电站时间同步系统研究[J].东北电力技术,2013,34(12):17-19.
[2]冀有党,曾宪国,徐丙垠,等.卫星同步时钟在电力系统中的应用[J].东北电力技术,1995,16(3):28-30.
[3]张信权,梁德胜,赵希才.时钟同步技术及其在变电站中的应用[J].继电器,2008,41(9):69-72.
[4]国家电网公司.智能变电站建设技术[M].北京:中国电力出版社,2012.
[5]刘振亚.智能电网技术[M].北京:中国电力出版社,2010.
[6]Comunication Networks and System in Substation:IEC61850-7-2[S].
[7]马成久,张武洋.智能化变电站时钟同步精度测试方法研究[J].东北电力技术,2011,32(8):8-11.
[8]张武洋,张文楷,李伟.智能化变电站时钟同步方案应用研究[J].东北电力技术,2011,32(9):15-18.
[9]张武洋,赵振宇,于同伟.基于SDH通道的PTP同步对时研究[J].东北电力技术,2011,32(1):37-40.
[2]冀有党,曾宪国,徐丙垠,等.卫星同步时钟在电力系统中的应用[J].东北电力技术,1995,16(3):28-30.
[3]张信权,梁德胜,赵希才.时钟同步技术及其在变电站中的应用[J].继电器,2008,41(9):69-72.
[4]国家电网公司.智能变电站建设技术[M].北京:中国电力出版社,2012.
[5]刘振亚.智能电网技术[M].北京:中国电力出版社,2010.
[6]Comunication Networks and System in Substation:IEC61850-7-2[S].
[7]马成久,张武洋.智能化变电站时钟同步精度测试方法研究[J].东北电力技术,2011,32(8):8-11.
[8]张武洋,张文楷,李伟.智能化变电站时钟同步方案应用研究[J].东北电力技术,2011,32(9):15-18.
[9]张武洋,赵振宇,于同伟.基于SDH通道的PTP同步对时研究[J].东北电力技术,2011,32(1):37-40.