新型电源快速切换装置在工业企业变电站的应用

Application of high-speed bus transfer device in industrial substation

传统电源快速切换装置主要应用于火电厂厂用电系统。为了更好地应用于工业企业变电站,新型电源快速切换装置做了如下方面改进和创新:其一,装置可由定值整定区分单母和单母分段接线,而对于不同运行方式,装置依靠自身采集的开关位置等信息自适应,无需人工设置,减少了设计和操作的复杂性;其二,提出了无流启动、逆功率启动、频率及电压变化量启动等快速启动方式,有效地解决了变电站所特有的故障情况下的快速启动问题;其三,考虑使用工况的复杂性,装置设计了完善的闭锁逻辑,并引入方向过流闭锁功能。通过在工业企业的成功应用,充分验证了新型电源快速切换装置在该领域的先进性和适用性。

The high-speed bus transfer device is mainly used in power plant auxiliary system,which has been improved to fit the industrial substations.It identifies the single bus connection or sectionalized single bus connection by setting and adapts to different running modes according to the self-acquired breaker status,which reduces the complexity of design and operation.It applies substation-specific fast starting modes,such as no-current starting,reverse-power starting and frequency-voltage-change starting.With the consideration of different working conditions,comprehensive blocking functions are designed,including the directional over-current blocking function.Its excellence and applicability are validated by some industrial substation applications.