多台柴油发电机组辅助系统供电电路

Power supply circuit for auxiliary systems of multiple diesel generator units

Abstract

本发明的多台柴油发电机组辅助系统供电电路,每台柴油发电机组配备一个双电源自动转换开关,每个转换开关的备用开关和主用开关互为反向联动,主用开关接各自机组的降压变压器,共用端接各自机组的辅助系统,为黑启动发电机组也配备一个双电源自动转换开关,该双电源自动转换开关的共用端接1#机组双电源自动转换开关的备用开关,主用开关接N#机组双电源自动转换开关的共用端,备用开关接黑启动发电机组的输出端,其余各编号机组双电源自动转换开关的备用开关接上一编号机组双电源自动转换开关的共用端。只要有任何一台大功率机组已在发电,就无需使用黑启动发电机组。使黑启动发电机组的“启动—停机”频次降至最低。
The invention discloses a power supply circuit for auxiliary systems of multiple diesel generator units. Each diesel generator unit is equipped with automatic transfer switching equipment; a spare switch and a main switch of each transfer switching equipment are linked reversely; the main switch is connected with a step-down transformer of its respective unit; and the common end is connected with the auxiliary systems of the units; one automatic transfer switching equipment is arranged on a black-start generator unit; the common end of the automatic transfer switching equipment is connected with the spare switch of the automatic transfer switching equipment of the unit 1#; the main switch is connected with the common end of the automatic transfer switching equipment of the unit N# and the spare switch is connected to the output end of the black-start generator unit; and the spare switches of the automatic transfer switching equipment of the other units with serial numbers are connected with the common end of the automatic transfer switching equipment of the previous unit. Only if one large-power unit has been put into power generation, the black-start generator unit does not need to be used, so that the start-stop frequency of the black-start generator unit is reduced to the minimum.

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