750 kV3/2接线方式下发变组同期并网方式的探讨  

A Study on the Ways of Synchronous Grid-Connection of the Generator-Transformer Set Under the 750 kV 3/2 Mode of Wiring

作　　者：李莉 LI Li(Ningxia Jingneng Ningdong Power Generation Co.,Ltd.,Yinchuan Ningxia 750400,P.R.China)

机构地区：[1]宁夏京能宁东发电有限责任公司设备部继保室,宁夏银川750400

出　　处：《重庆电力高等专科学校学报》2022年第1期10-12,21,共4页Journal of Chongqing Electric Power College

摘　　要：在理论上,一台发变组专用一台同期装置,服务于一个并列点,但是在实际应用中发变组同期点不只有一个,这种配置无法根据机组运行方式,实现发变组多点的同期并网。提出了“SID-2X-A型选线器”和“SID-2CM-4微机自动准同期装置”组合同期装置的方案,节省了装置费用,减少了现场二次线的施工工作量,通过外部同期点选择指令轻松实现多种运行方式下多个开关的同期合闸。In practical application,there are more than one synchronous point in the generator-transformer set.Therefore,the scheme of using one synchronous device to serve one parallel point in one generator-transformer set does not have the function of realizing multi-point synchronous grid-connection in one generator-transformer set according to the modes of operation of the set.This paper puts forward a scheme of combining the“SID-2X-A line selector”and the“SID-2CM-4”microcomputer automatic synchronizer,which can save the purchase expenses of devices and reduce the workload of on-the-spot secondary line construction.By means of the external synchronous point selection instruction,synchronous closing of multiple switches under different modes of operation can be easily realized.

关 键 词：3/2接线 发变组 自动准同期装置 并网 

分 类 号：TM76[电气工程—电力系统及自动化]