基于功率灵敏度和经济补偿最小化的线路过负荷紧急控制方法

发布时间：2018-04-25 13:46

本文选题：电力系统 + 紧急控制　；参考：《电力自动化设备》2017年01期

【摘要】：为避免切除因潮流转移导致过载的线路,提出一种基于功率灵敏度和经济补偿最小化的线路过负荷紧急控制方法。利用功率灵敏度矩阵反映各节点注入功率变量对线路功率变量的影响,以经济补偿最小化为目标,利用非线性优化得到满足线路过负荷消除约束、节点可调量约束、系统功率平衡约束及正常线路冗余量约束的紧急控制方法。所提方法可计算平衡机对电网各线路功率的灵敏度,令平衡机参与到紧急控制中,提高了电网保持稳定运行的能力;同时,其以经济补偿最小为目标,实用价值更高。将局部灵敏度计算法和稀疏向量技术结合,有效减少了计算量和内存量。在IEEE 39节点系统中对所提方法的正确性和优越性进行了验证。
[Abstract]:In order to avoid excising overloaded lines caused by power flow transfer, an emergency control method of line overload based on power sensitivity and economic compensation minimization is proposed. The power sensitivity matrix is used to reflect the influence of each node injection power variable on the line power variable. Aiming at minimizing the economic compensation, the nonlinear optimization is used to obtain the line overload cancellation constraint and the node adjustable constraint. An emergency control method for system power balance constraints and normal line redundancy constraints. The proposed method can calculate the sensitivity of the balancer to the power of every transmission line of the power grid, make the balancer participate in the emergency control, and improve the ability of the power grid to maintain stable operation. At the same time, its aim is to minimize the economic compensation, and the practical value is higher. The local sensitivity method and sparse vector technique are combined to reduce the amount of computation and the amount of memory. The correctness and superiority of the proposed method are verified in IEEE 39 bus system.
【作者单位】：华北电力大学新能源电力系统国家重点实验室;国网江苏省电力公司检修分公司苏州运维分部;国网江苏省电力公司苏州供电公司;
【基金】：国家自然科学基金资助项目(50777016) 中央高校基本科研业务费专项资金资助项目(12MS110)~~
【分类号】：TM732;TM76

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