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arXiv 2107.07700math.OC
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不同交流最优潮流公式的数值性能

Numerical Performance of Different Formulations for Alternating Current Optimal Power Flow

Sayed Abdullah Sadat, Kibaek Kim

摘要:

交流最优潮流(ACOPF)问题是一个非凸、非线性最优化问题。公用事业和独立服务运营商(ISO)要求ACOPF几乎实时解决。内点法是求解大规模非线性最优化问题的有效方法之一,也是求解大规模输电网络ACOPF问题的有效方法。此外,配方的选择是一样重要的选择算法来解决ACOPF问题。本文评估了具有各种线性求解器的不同ACOPF公式以及采用框约束的影响,以确定使用IPM时的计算可行性和最佳性能。在这些配方中使用不同的优化结构来模拟ACOPF问题,代表一系列的稀疏性。数值实验表明,最稀疏的ACOPF公式与极性电压产生最好的计算结果。此外,节点注入模型和基于电流的分支流量模型通过强制箱约束得到改进。广泛的测试用例,从500总线系统到9591总线系统,用于验证测试结果。

英文摘要:

Alternating current optimal power flow (ACOPF) problems are nonconvex and nonlinear optimization problems. Utilities and independent service operators (ISO) require ACOPF to be solved in almost real time. Interior point methods (IPMs) are one of the powerful methods for solving large-scale nonlinear optimization problems and are a suitable approach for solving ACOPF with large-scale real-world transmission networks. Moreover, the choice of the formulation is as important as choosing the algorithm for solving an ACOPF problem. In this paper, different ACOPF formulations with various linear solvers and the impact of employing box constraints are evaluated for computational viability and best performance when using IPMs. Different optimization structures are used in these formulations to model the ACOPF problem representing a range of sparsity. The numerical experiments suggest that the least sparse ACOPF formulations with polar voltages yield the best computational results. Additionally, nodal injected models and current-based branch flow models are improved by enforcing box constraints. A wide range of test cases, ranging from 500-bus systems to 9591-bus systems, are used to verify the test results.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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