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1.北京交通大学电气工程学院,北京市 100044
2.国家电网公司华中分部,湖北省武汉市 430077
Received:19 November 2021,
Revised:2022-05-05,
Published Online:28 October 2022,
Published:10 January 2023
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李栌苏,吴俊勇,李宝琴等.基于改进残差网络的两阶段电力系统频率安全多级预警[J].电力系统自动化,2023,47(1):22-34.
LI Lusu,WU Junyong,LI Baoqin,et al.Two-stage Multi-level Early Warning for Power System Frequency Safety Based on Improved Residual Network[J].Automation of Electric Power Systems,2023,47(1):22-34.
李栌苏,吴俊勇,李宝琴等.基于改进残差网络的两阶段电力系统频率安全多级预警[J].电力系统自动化,2023,47(1):22-34. DOI: 10.7500/AEPS20211119003.
LI Lusu,WU Junyong,LI Baoqin,et al.Two-stage Multi-level Early Warning for Power System Frequency Safety Based on Improved Residual Network[J].Automation of Electric Power Systems,2023,47(1):22-34. DOI: 10.7500/AEPS20211119003.
随着“双碳”目标的提出,可再生能源集群大规模并网,导致电力系统频率安全问题再次凸显。因此,借鉴深度学习方法,提出一种基于改进残差网络的两阶段电力系统频率安全多级预警模型。首先
对电力系统的频率安全进行多级精细划分,提出并构建频率安全多级预警模型。该模型在第1阶段利用基于改进残差网络的分类评估器对受扰后的频率是否会超出安全预警值进行评估,并给出预警等级;在第2阶段利用回归预测器进一步给出预警样本的危险程度。最后,以改进IEEE 10机39节点系统和美国伊利诺伊州200节点系统为算例对该模型进行测试,结果表明该模型具有较高的安全预警准确率,不但优于其他浅层学习方法和深度学习模型,而且可以精确地预测频率危险程度,并具有良好的鲁棒性和抗噪能力。
With the proposal of the “carbon emission peak and carbon neutrality” goal and the large-scale grid connection of renewable energy clusters
the problem of power system frequency safety is highlighted again. Therefore
by referring to the deep learning method
a two-stage multi-level early warning model for power system frequency safety based on improved residual network is proposed. Firstly
the multi-level fine division for power system frequency safety is carried out
and the multi-level early warning model for power system frequency safety is proposed and constructed. In the first stage
the proposed model uses the classification evaluator based on the improved residual network to evaluate whether the disturbed frequency will exceed early warning value for the safety
and gives the early warning level. In the second stage
the regression predictor is used to further give the risk degree of early warning samples. Finally
the improved IEEE 10-machine 39-bus system and Illinois 200-bus system are taken as examples to test the model. The results show that the model has high early warning accuracy for the safety
which is not only better than other shallow learning methods and deep learning models
but also can accurately forecast the frequency risk degree
and has good robustness and anti-noise ability.
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