CAJ | 학술논문

随着间歇性电源、柔性负荷大幅接入电网，电力系统动态过程被大大加快，能量流与信息流的相互耦合成为智能电网的的重要特征，信息网络故障可能引发相继或连锁故障在信息网和物理网之间交替传播，导致信息物理耦合系统的崩溃，严重威胁电力系统安全运行。从能量流与信息流的关联度增加、电力系统动态过程加快、信息流全局性对能量流的影响三方面分析了智能电网能量流与信息流的耦合特征，对智能电网信息物理融合系统的建模需求、现状和内容进行了分析，以220 kV典型变电站为实例研究了能量流和信息流的耦合机理和作用。
수착간헐성전원、유성부하대폭접입전망，전력계통동태과정피대대가쾌，능량류여신식류적상호우합성위지능전망적적중요특정，신식망락고장가능인발상계혹련쇄고장재신식망화물리망지간교체전파，도치신식물리우합계통적붕궤，엄중위협전력계통안전운행。종능량류여신식류적관련도증가、전력계통동태과정가쾌、신식류전국성대능량류적영향삼방면분석료지능전망능량류여신식류적우합특정，대지능전망신식물리융합계통적건모수구、현상화내용진행료분석，이220 kV전형변전참위실례연구료능량류화신식류적우합궤리화작용。
With intermittent generation, flexible load has accessed to power grid greatly, the power system dynamic process is accelerated greatly, and mutual coupling between energy flow and information flow becomes an important feature of smart grid. Information network fault may cause sequential or interlock fault and alternate transmission between information network and physical network, which results in cyber-physical systems collapse and threatens to the safe operation of power system seriously. Firstly, based on the increasing of correlation degree between energy flow and information flow, the speed up of power system dynamic process and the influence of global information flow on energy flow, this paper analyzes coupling feature of the smart grid energy flow and information flow. Secondly, this paper analyzes modeling needs, actuality and content of smart grid cyber-physical systems. Lastly, this paper studies the mechanism and effect of the mutual coupling between energy flow and information flow based on a 220kV typical smart substation.