变电站220 kV母线改造方案设计研究

Design and Research of 220 kV Bus Transformation Scheme in Substation

大型变电站改造项目的重点和关键是确保现役供电回路和运行设备的安全可靠。以江苏武南500 kV变电站为例,为配合武南变电站500 kV主变增容,对变电站220 kV 1M/2M母线实施改造,提高母线通流能力,针对调度要求在改造期间接于母线上的5回重要出线不允许同时停电的运行特点,提出了武南变电站220 kV母线改造方案,对主接线方式、总平面布置,以及改造过渡阶段母线保护配置等进行了设计研究,为今后的变电站改造工程提供了思路和借鉴。

The focus and key of large substation reconstruction project is to ensure the safety and reliability of active power supply circuit and operating equipment.Taking Jiangsu Wunan 500 kV substation as an example,in order to cooperate with the capacity increase of 500 kV main transformer of Wunan substation,the 220 kV 1m/2m bus of the substation is transformed to improve the bus current carrying capacity.According to the dispatching requirements,the five important outgoing lines connected to the bus during the transformation are not allowed to be powered off at the same time,the 220 kV bus transformation scheme of Wunan substation is put forward The general layout and bus protection configuration in the transformation transition stage are designed and studied,which provides ideas and reference for the future substation transformation project.