计及N-1约束的联络线功率交互能力刻画与分析

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中图分类号：TM73 文献标志码：A 文章编号：1000-582X（2025）09-012-09

Abstract：Accurate characterizationof tie-line power transfer capability is essentialforensuring thefeasibilityand optimality of cross-regional power exchanges.However，existing methods typically consider only the base operating scenario and neglect N-1 contingencies，leading to inaccurate assessments of regional tie-line transfer capabilities.This paper addresses this gap by focusing on the tie-line exchange capability of power systems under N-1contingency constraints.A fast determination strategy is proposed based on the coupling relationship between the basecase and N-1 scenarios，using a decomposition approach.Furthermore，the impacts of various generator control modes on tie-lineexchange capabilityunder N-1 contingencies are analyzed to support the optimal allocationof cross-regional power transfers.Theproposed methods isvalidated using a provincial-level power system，demonstrating its accuracy and practical effectiveness.

Keywords： tie-line; power exchange capability; N-1 contingency; fast determination; unit control mode

随着中国新能源电力的持续增长，负荷呈现强波动性，区域电网仅靠自身的内部电源难实现源荷的平衡[4资源呈现逆向分布，跨区电力传输是中国电网常态5]。（剩余14498字）