PV curves are generally obtained by considering lumped models of transmission lines. This approximated model can yield an inaccurate estimation of the maximum loading condition of the system. This letter shows that accuracy can be improved by considering line models with uniformly distributed parameters. Analytical evaluations of the PV curve and of the voltage collapse point of a two-bus system are obtained by applying the Ossanna's theorem. Then the impact of different line models on large-scale systems is evaluated through a continuation power flow analysis of a real-world model of the Sicilian transmission system including the Sicily-Malta 120 km cable connection.

中文翻译：

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均匀分布参数线模型对 PV 曲线和最大负载条件评估的影响


PV曲线通常通过考虑传输线的集总模型来获得。该近似模型可能会产生对系统最大负载条件的不准确估计。这封信表明，通过考虑具有均匀分布参数的线模型可以提高精度。通过应用 Ossanna 定理，获得了两母线系统的 PV 曲线和电压崩溃点的分析评估。然后，通过对西西里输电系统（包括西西里岛-马耳他 120 公里电缆连接）的真实世界模型进行连续潮流分析，评估不同线路模型对大型系统的影响。