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1.南京理工大学自动化学院,江苏省南京市 210094
2.南瑞集团有限公司(国网电力科学研究院有限公司), 江苏省南京市 211106
3.智能电网保护和运行控制国家重点实验室,江苏省南京市 211106
吕睿(1990—),男,博士研究生,主要研究方向:电力系统安全稳定分析与控制。E-mail:lvrui@sgepri.sgcc.com.cn
薛禹胜(1941—),男,通信作者,中国工程院院士,博士生导师,主要研究方向:电力系统自动化。E-mail:xueyusheng@sgepri.sgcc.com.cn
郁琛(1985—),男,博士,高级工程师,主要研究方向:电力系统外部灾害防御。E-mail:yuchen@sgepri.sgcc.com.cn
收稿日期:2022-05-15,
修回日期:2022-08-22,
网络出版日期:2022-08-25,
纸质出版日期:2022-09-10
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吕睿,薛禹胜,郁琛等.算法精度评估中的风险观点[J].电力系统自动化,2022,46(17):186-193.
LYU Rui,XUE Yusheng,YU Chen,et al.Risk Based Viewpoint on Assessment of Algorithm Accuracy[J].Automation of Electric Power Systems,2022,46(17):186-193.
吕睿,薛禹胜,郁琛等.算法精度评估中的风险观点[J].电力系统自动化,2022,46(17):186-193. DOI: 10.7500/AEPS20220515008.
LYU Rui,XUE Yusheng,YU Chen,et al.Risk Based Viewpoint on Assessment of Algorithm Accuracy[J].Automation of Electric Power Systems,2022,46(17):186-193. DOI: 10.7500/AEPS20220515008.
算法误差的合理评估对算法的开发与应用十分重要。但通常采用大量算例误差绝对值的统计值来评估算法精度的方法,既不能反映误差影响的非线性,亦不能反映误差符号的不同对于许多工程问题的不同影响,故在某些场合难以客观反映算法的实用性。为此,将算例样本的误差概率与误差代价的点乘值定义为误差风险指标,以协助算法的开发与选用。文中给出算法误差评估中的风险计算方法,并以IEEE 10机39节点系统的暂态稳定分析问题为例,验证了该指标在算例快速筛选的阈值优选中的应用效果。
It is important for the development and application of an algorithm to assess its error rationally. However
the method
which commonly adopts the statistical absolute value based on a great quantity of calculated examples to assess the algorithm accuracy
can neither reflect the nonlinearity of error influence nor the different influence of different error signs on many engineering problems. So
it leads to the difficulty in reflecting the practicality of the algorithm objectively on a few occasions. Therefore
the error risk index that multiples the error probability and the error cost is proposed to assist the development and selection of the algorithm. The risk calculation method by using the error risk index for algorithm error assessment is presented
and the transient stability analysis of the IEEE 39-bus system is employed as an example to verify the effectiveness of the proposed index in the threshold optimization of the rapid case filter.
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