This paper presents a new network-constrained unit commitment (UC) model, which is formulated as a mixed-integer linear programming (MILP) optimization problem with embedded ac power flow (AC-PF) constraints. Piecewise linear AC-PF equations are formulated, which constrain the UC dispatch schedule within permissible transmission capacity and voltage deviation limits, solely by executing the main optimization problem. The proposed model is tested on a six-bus and the IEEE RTS-79 test systems, using GAMS software, whereas the obtained AC-PF results are validated against DIgSILENT/Powerfactory package. The UC schedules are comparatively assessed with detailed results presented in the relevant literature for the same test systems, employing different UC+AC-PF models.

本文提出了一种新的网络约束单元承诺（UC）模型，该模型被公式化为具有嵌入式交流潮流（AC-PF）约束的混合整数线性规划（MILP）优化问题。制定了线性线性AC-PF方程，仅通过执行主要的优化问题即可将UC调度计划限制在允许的传输容量和电压偏差限制之内。使用GAMS软件在6总线和IEEE RTS-79测试系统上测试了提出的模型，而获得的AC-PF结果则通过DIgSILENT / Powerfactory封装进行了验证。使用不同的UC + AC-PF模型，对UC计划进行比较评估，并在相关文献中提供有关相同测试系统的详细结果。