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为了实现更大范围的资源优化配置 ,网络互联与区域间的功率交换日益频繁 ,并由此产生了跨大区的输电阻塞管理问题。针对这一问题提出了跨大区电力市场双边交易的阻塞管理数学模型和实用计算方法。在优化目标函数中 ,引入了合同的“权重因子” ,以反映经济上的重要性或政策要求等因素 ,从而区别对待各合同 ,并使合同的调整量最小 ;在约束中 ,同时考虑了单条联络线的热稳定或动稳定约束和联络线割集的动稳定约束。导出了组对组 (点集对点集 )合同内发电功率对线路功率的转移分布因子 ,从而将约束转化为发电机功率增量向量的线性函数 ,并通过阻塞优化校正算法得到最终的可行交易集合。改进的IEEE 30节点算例证明了该算法的正确性和有效性。
In order to achieve a wider range of optimal allocation of resources, the power exchange between network interconnection and area is more and more frequent, resulting in the transmission congestion management problem across regions. In view of this problem, a mathematical model of congestion management and a practical calculation method for bilateral transactions across the electricity market are proposed. In the optimization objective function, the “weight factor” of the contract is introduced to reflect the economic importance or policy requirements and other factors, so as to treat each contract differently and minimize the adjustment of the contract. In the constraint, a single Thermal stability or dynamic stability of tie line and dynamic stability constraint of tie line cut set. The transfer distribution factor of generation power to line power in the group-to-group (point-to-point set) contract is derived, which transforms the constraint into a linear function of the generator power increment vector and obtains the final feasible transaction by blocking optimization and correction algorithm set. The improved IEEE 30-bus example demonstrates the correctness and effectiveness of the proposed algorithm.