Automatic inspection method for converter station CT configuration dead zone inspection

• Main Authors: CHEN HAIYONG, HE HAIHUAN, LI JIANBO, HUANG DINGWEN, FENG JIAWEI, ZHANG CHAOHUI, XIONG CHAO, HU ZHONGSHAN
• Format: Patent
• Language: Chinese; English
• Published: 04.03.2022
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The invention discloses an automatic inspection method for converter station CT configuration dead zone inspection. The automatic inspection method comprises the following steps: establishing a 3/2 circuit breaker wiring topology model; configuring a 500kV complete string principle; according to a configuration principle, establishing a configuration sequence table of a single-side current transformer, a middle switch double-side current transformer and a double-side power transformer; a 220kV typical topology model is established; corresponding voltage grades and configurations are selected, and a CT field record table is automatically generated; checking the CT on site according to the table, and recording a sequence number; and the recorded table is imported into a system for checking. According to the method, the topological models of different voltage levels are established, the sequence numbers of the CT secondary windings are established, the on-site record table is formulated, whether the sequence of