Short-term hydrothermal coordination considering an AC network modeling
Short-term hydrothermal coordination considering an AC network modeling
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DOI：
10.1016/j.ijepes.2006.11.008
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发表时间：
2007-07
影响因子：
5.2
通讯作者：
W. Sifuentes;A. Vargas
中科院分区：
文献类型：
--
作者：
W. Sifuentes;A. Vargas
在短期热液协调中，输电网络通常通过直流潮流进行建模。然而，当使用交流潮流进行验证时，这种建模可能导致不可操作的解决方案。这项工作提出了一种方法，其中包括一个交流潮流模型来克服上述问题。该方法考虑到诸如拥塞管理和服务质量控制等问题，这些问题经常出现在大型和弱网状网络中——南美电力系统的典型模式。广义Benders分解和更传统的优化技术被用于求解这一问题。主问题阶段通过考虑时间间约束来确定发电水平，而子问题阶段确定负荷曲线每一步的主动和无功经济调度。它通过改进的交流最优潮流来满足电气约束。在一个9总线热液系统和实际系统上验证了该方法的鲁棒性。
In short-term hydrothermal coordination, the transmission network is typically modeled through a DC power flow. However, this modeling can lead to inoperable solutions when verifying with AC power flow. This work presents a methodology that includes an AC power flow model to overcome the above problem. The approach takes into account issues like congestion management and quality control of service which are often present in large and weakly meshed networks—the typical pattern of South American electrical power systems. Generalized Benders decomposition, together with more traditional and well-known optimization techniques are used for the solution of this problem. The Master Problem stage defines the generation level by regarding the inter-temporal constraints, whereas the sub-problem stage determines both the active and reactive economical dispatch for each step of the load curve. It meets the electrical constraints through a modified AC optimal power flow. The methodology has been proven over a 9-bus hydrothermal system and on actual system to verify the robustness of convergence.