长距离同杆架设双回路保护特点的研究

结合长距离同杆双回线的特点及故障分析的介绍，提出在工程设计中用距离原理的保护应用合以相对完善的通道构成全线性速跳闸，使用分相电流差动原理的保护应计及线路电容电流的影响并采取补偿措施，同时在重合闸的使用上可以选择简单方式，或为了保存系统的联络而选择相对复杂的方式。

Research on Protection Characteristic for Long Distance Double-Line with the Same Tower

After introducing the characteristics and fault analysis of the long distance double line with the same tower,the following viewpoints are proposed for project:when using distance scheme protection,it should be cooperated with mote perfect channel to realize rapid operation on whole transmission line when using split phase current differential protection.The influence of capacitive current should be considered and the compensation measure should be taken;for auto recloser,the simple mode can be chosen,or a little complicated mode can be chosen to maintain system connection.