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中文摘要：
作为电力系统安全保障体系的第二道防线,先进的紧急控制技术对电网灾变防治不可或缺。为克服现有紧急控制系统切负荷方式固有的粗放性、无选择性等局限,基于用户侧能量管理系统（UEMS）,提出了电力系统精细化稳定控制系统的概念、结构和模型,并基于非线性最优控制理论提出了切机/切负荷量的计算方法。所构建的精细化稳定控制系统能够实现有选择性的精细化切负荷功能,即优先短时切除不影响用户用电体验的负荷。数值仿真验证了所提方法的有效性和正确性。
英文摘要：
As the second defense line of power systems stability control architecture,advanced emergency control technologies are indispensable for power grids catastrophe preventing. Current power system emergency control systems are extensive and have no selectivity for different loads. In order to overcome these intrinsic shortcomings,the concept,structure and model of Refined Power System Stability Control Systems（ RSCS） are proposed based on User Energy Management Systems（ UEMS）,and the algorithm for calculating generation / load shedding proportion is proposed based on optimal control theories. RSCS can achieve selective and accurate load shedding through UEMS,e. g.,loads which doesn＇t affect power consumers＇ experiences if they are shed for a short time are firstly shed. Numerical simulation results manifest the correctness and validity of the proposed algorithm.
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