电力建设2024，Vol.45Issue(2)：1-9,9.DOI:10.12204/j.issn.1000-7229.2024.02.001
交直流混联系统暂态功角稳定评估及特征量可解释性分析
Transient Power Angle Stability Evaluation and Interpretability Analysis of AC/DC Hybrid Power System
摘要
Abstract
Compared with traditional power systems,the structure of an AC/DC hybrid system with new energy sources is more complex,its stability evaluation is more difficult,and the identification and interpretation of stability influencing factors are poor.Given the above problems,this study first selects new energy and DC features as the input of the stability evaluation model and obtains the relationship between the sample prediction value and the stability result using the sigmoid function.A transient power-angle stability evaluation method for an AC/DC hybrid system based on extreme gradient Boosting(XGBoost)was proposed.To further analyze the influence of features on the transient power angle stability of the system,an interpretable analysis method of features based on SHAP is proposed,which explains the importance of new energy and DC features from a global perspective,which reflects the relationship between the size of each feature itself and the promotion and inhibition of stability results from the perspective of all samples,and then obtains the influence of features on the stability results of a single sample from a local perspective.Finally,simulation verification was performed on a 500 kV actual AC/DC hybrid system,which proves that the accuracy of the evaluation method is high and that SHAP can effectively explain the influence of new energy and DC features on the transient power angle stability of the AC/DC hybrid system.关键词
交直流混联系统/暂态功角稳定/特征量/可解释性Key words
AC/DC hybrid system/transient power angle stability/features/interpretability分类
信息技术与安全科学引用本文复制引用
李雅晗,夏世威,马琳琳,赵康,李新..交直流混联系统暂态功角稳定评估及特征量可解释性分析[J].电力建设,2024,45(2):1-9,9.基金项目
This work is supported by the National Key Research and Development Program of China"Response-driven intelligent enhanced analysis and control for bulk power system stability"(No.2021YFB2400800,No.SGSDDKOOWJJS2200092).国家重点研发计划项目"响应驱动的大电网稳定性智能增强分析与控制技术"(2021YFB2400800,SGSDDKOOWJJS2200092) （No.2021YFB2400800,No.SGSDDKOOWJJS2200092）
