就地无防护安装方式构架下主设备保护的分析及应用
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摘要
针对智能变电站继电保护的发展现状,提出一种基于就地无防护安装的二次系统构架,并基于该构架对跨间隔的主设备保护提出解决方案,包括无防护就地化主变保护方案、部分集中式母线保护就地化方案以及基于共享网络的母线保护就地化方案。其中主变保护采用主子机的模式利用环网进行数据传输,光口数量大为减少,提高保护可靠性的同时使得无防护的就地化下放成为可能,基于分布式环网的同步技术保证了主子机之间的数据同步,同时兼顾子机的对外发送SV功能;部分集中式母线保护装置数量少,保护可靠性高,运维便利,基于共享网络的母线保护充分利用共享数据,结构简单,可靠性高。上述方案解决了智能变电站光纤众多、速动性低、可靠性不高、就地放置防护等级低等问题。
In view of the current situation of the relay protection in intelligent substation, an architecture of the secondary system based on locally unguarded installation and an overall solution for the multi-interval main equipment protection based on the architecture is proposed in this paper. To be specific, a locally unguarded transformer protection scheme, a locally unguarded partial centralized bus protection, and a locally installed bus protection based on the shared network are involved. Because of the data transmission based on looped network with master and slave mode, the optical port quantity of the transformer protection device can significantly reduce, the reliability may be improved, and meanwhile the unguarded locally installation might be possible. With the help of synchronization technology based on distributed looped network, synchronization can be achieved among the master and slave machines, meanwhile the slave machines can send SV out; The advantage of partial centralized bus protection scheme are small quantity of device, high reliability and convenience operation and maintenance; The bus protection based on the shared network can make full use of the network, which leads to a high reliability with a simple structure. In summary, the overall solution helps to solve the problems of too much fiber, low rapidity, less reliability, low protection degree under the locally installation and so on.
In view of the current situation of the relay protection in intelligent substation, an architecture of the secondary system based on locally unguarded installation and an overall solution for the multi-interval main equipment protection based on the architecture is proposed in this paper. To be specific, a locally unguarded transformer protection scheme, a locally unguarded partial centralized bus protection, and a locally installed bus protection based on the shared network are involved. Because of the data transmission based on looped network with master and slave mode, the optical port quantity of the transformer protection device can significantly reduce, the reliability may be improved, and meanwhile the unguarded locally installation might be possible. With the help of synchronization technology based on distributed looped network, synchronization can be achieved among the master and slave machines, meanwhile the slave machines can send SV out; The advantage of partial centralized bus protection scheme are small quantity of device, high reliability and convenience operation and maintenance; The bus protection based on the shared network can make full use of the network, which leads to a high reliability with a simple structure. In summary, the overall solution helps to solve the problems of too much fiber, low rapidity, less reliability, low protection degree under the locally installation and so on.
引文
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[9]赵书耀,秦雷鸣,刘玉红等.基于PRP和HSR技术的数字化变电站设计[J].南方电网技术,2016,10(6):38-43.
[10]何周,袁端磊,史皓然等.基于环网冗余网络的智能化变电站通信网络研究[J].电器与能效管理技术,2015,(18):25-29,39.
[11]周小波,汪思满,吴正学等.环网分布式母线保护装置就地化实现探讨[J].电力系统保护与控制,2015,(6):104-108.
[2]熊小伏,陈星田,郑昌圣等.继电保护系统状态评价研究综述[J].电力系统保护与控制,2014,42(5):51-58.
[3]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.
[4]王增平,姜宪国,张执超等.智能电网环境下的继电保护[J].电力系统保护与控制,2013,41(2):13-18.
[5]李俊刚,张爱民,彭华厦等.区域层次化保护系统研究与设计[J].电力系统保护与控制,2014,42(11):34-40.
[6]陈萍,张继军,郭文钟等.数字化变电站中保护下放问题探讨[J].电力系统保护与控制,2009,37(1):98-100.
[7]牛强,钟加勇,陶永健等.智能变电站二次设备就地化防护技术[J].电力建设,2014,35(9):76-81.
[8]王维俭,桂林.主设备保护技术发展的回顾与前瞻[J].电力系统保护与控制,2008,36(12):5-7.
[9]赵书耀,秦雷鸣,刘玉红等.基于PRP和HSR技术的数字化变电站设计[J].南方电网技术,2016,10(6):38-43.
[10]何周,袁端磊,史皓然等.基于环网冗余网络的智能化变电站通信网络研究[J].电器与能效管理技术,2015,(18):25-29,39.
[11]周小波,汪思满,吴正学等.环网分布式母线保护装置就地化实现探讨[J].电力系统保护与控制,2015,(6):104-108.