摘要
110kV电压等级输电线路广泛使用双母线接线方式;电压切换功能保证了各种保护及自动装置的二次电压回路随同主接线一同切换;传统中间继电器构成的电压切换功能经常出现由于辅助触点异常或接线错误引起继电器线圈烧毁、PT反充电等问题,引起110kV输电线路保护失去电压。110kV输电线路的双母线电压切换功能与线路保护功能通常一体化配置,提出了一种微机化电压切换功能的设计方案,彻底解决了传统电压切换功能存在的问题,具有广泛的实际应用价值。
The double busbar connection is widely used in the 110kV voltage transmission lines. Voltage switching function has guaranteed that a variety of protection and automatic device＇s secondary voltage circuit switch on with the primary circuit. Because of the abnormal auxiliary contacts or error connection scheme by the voltage switching of traditional medium relay, the relay coil could be burned down or PT charged reverse, which makes the 110 kV transmission line lose its directional protection briefly. It is universal that voltage switching function of double busbar and line protection is configured integration. The design of computerized voltage switching function is proposed in this paper, which can solve the problem of traditional voltage switching function thoroughly and has a widespread practical application value.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2009年第18期105-108,共4页
Power System Protection and Control
