arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2008.12429eess.SYcs.AIcs.SY
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数据驱动的电力系统安全评估

Data-Driven Security Assessment of the Electric Power System

Monash University(莫纳什大学)

Seyedali Meghdadi, Guido Tack, Ariel Liebman

摘要:

向新的低排放能源未来的过渡导致发电和负荷类型的组合发生变化,这是由于可再生能源渗透率的显着增长以及由于老化的化石燃料发电厂的退出而导致的系统惯性的减少。这增加了电网规划和运行的技术挑战。这项研究介绍了一种新的分解方法来考虑系统的安全性,使用传统的机器学习工具进行短期规划。这项工作的直接价值是,它提供了可扩展的和计算效率高的指导方针,使用监督学习工具,以评估第一摆动瞬态稳定状态。为了提供对训练数据集上的最终模型拟合的无偏评估,在先前未见过的测试集上检查了所提出的方法。该方法准确区分了测试集中的稳定和不稳定情况,误差仅为0.57%,对不稳定时间的预测精度较高,误差为6.8%,平均绝对误差为0.0145。

英文摘要:

The transition to a new low emission energy future results in a changing mix of generation and load types due to significant growth in renewable energy penetration and reduction in system inertia due to the exit of ageing fossil fuel power plants. This increases technical challenges for electrical grid planning and operation. This study introduces a new decomposition approach to account for the system security for short term planning using conventional machine learning tools. The immediate value of this work is that it provides extendable and computationally efficient guidelines for using supervised learning tools to assess first swing transient stability status. To provide an unbiased evaluation of the final model fit on the training dataset, the proposed approach was examined on a previously unseen test set. It distinguished stable and unstable cases in the test set accurately, with only 0.57% error, and showed a high precision in predicting the time of instability, with 6.8% error and mean absolute error as small as 0.0145.

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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