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通过对南方电网各种运行方式下严重故障的分析计算,结合现有失步解列装置的配置及其设计原理,分析了各种失步情况下电网所配置的失步解列装置的动作及其解列后电网各电气孤岛的稳定情况。南方电网的失步解列装置按照目前的配置在大部分情况下都能正确动作,但存在仅依靠孤立装置难以完全切开失步断面的情况。而失步解列只有断开失步机群之间的所有电气联系线路才能有效消除失步系统间的振荡,避免事故扩大。根据南方电网网情及其现有失步解列装置配置,指出了应在各失步解列装置之间建立通信联系,通过装置配合,可靠地实现系统失步时断开失步机群之间的失步断面,并进一步给出了失步解列建议方案。
Through the analysis and calculation of serious failures in various operation modes of China Southern Power Grid and the disposition and design principle of the existing out-of-step de-parsing device, the action of the out-of-step de-parsing device configured in the power grid under various out-of-step conditions is analyzed. The solution to the stability of the electrical grid island. China Southern Power Grid out of step out of the device in accordance with the current configuration in most cases can be correct action, but there is only rely on isolated devices is difficult to completely cut the out of step profile. The out-of-step solution can only effectively eliminate the oscillation between out-of-step systems and avoid the accident expansion only by disconnecting all the electrical connection lines between the out-of-step machine groups. According to the configuration of China Southern Power grid network and its existing out-of-step device, it is pointed out that a communication connection should be established between each out-of-step device, and the device should cooperate to reliably disconnect the out-of- The out-of-step section, and further gives out the proposed program of disintegration.