利索-全球专利检索

  1. 登录
  2. 注册
发明公开
CN103248009A YNd5变压器纵联差动保护电流相位补偿方法 无效 - 撤回

YNd5变压器纵联差动保护电流相位补偿方法
摘要：
本发明属于电力输配电网络的继电保护控制技术，涉及一种YNd5系列变压器纵联差动保护电流相位补偿的方法。该方法是：a.使YNd5变压器高压侧、低压侧TA二次绕组均接为星型接法；b.该变压器Y侧TA二次绕组A相电流、B相电流、C相电流分别接入YNd11变压器差动保护装置的A相电流、B相电流、C相电流回路；c.该变压器d侧TA二次绕组的各相电流按照将YNd5变压器d侧各相电流反极性接入YNd11变压器差动保护装置中；d.利用YNd11变压器保护装置最终实现YNd5变压器差动保护相位补偿。本发明原理简单、实施方便，能够适应YNd5接线变压器纵联差动保护电流相位补偿。
摘要（英）：

The invention belongs to a relay protection controlling technology of a power transmission and distribution network, and relates to a longitudinal differential protection current phase compensation method for an YNd5 transformer, which comprises the steps of enabling TA secondary windings of the high-voltage side and the low-voltage side of the YNd5 transformer to be in Y connection; b, connecting the A-phase current, B-phase current and the C-phase current of the Y-side TA secondary windings of the transformer to loops of the A-phase current, the B-phase current and the C-phase current of a YNd11 transformer differential protection device; c, connecting each phase current of the d-side TA secondary windings of the transformer into the YNd11 transformer differential protection device according to the reversed polarity of each d-side phase current of the YNd5 transformer; and d, utilizing the YNd11 transformer protection device to finally realize the differential protection phase compensation of the YNd5 transformer. The longitudinal differential protection current phase compensation method for the YNd5 transformer is simple in principle, convenient to implement and can adapt to the longitudinal differential protection current phase compensation of the YNd5 connecting transformer.

0/0