Abstract:Computer-based transformer protections are widely used in Southern Hebei Power Network.The authors,associated with working practice, present some application experiences of some typical transformer protections of this kind,and discuss the principle of wave-form symmetry,phase compensation issues,application of compound voltage,taking of 3U0 and its vector direction.
Keywords:transformer;computer-based protection;application;differential protection
a. 可以集主保护、后备保护功能于一身,非常适合220 kV及以上电压等级的变压器实现完全独立的双重化保护。
b. 具有远方通讯功能,便于实现变电站的综合自动化。
c. 具有自检功能,自动故障定位减轻了维护人员的工作量。
d. 具有强大的故障录波功能,界面友好,使用更加方便,随着计算机技术的发展,这项功能在不断加强。