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1.四川大学电气工程学院,四川省成都市 610065
2.国家电网公司西北分部,陕西省西安市 710048
3.国网宁夏电力有限公司,宁夏回族自治区银川市 750001
刘季昂(1995—),男,硕士,主要研究方向:电力系统数据挖掘。E-mail:ymm_liujiang@163.com
刘友波(1983—),男,博士,副教授,博士生导师,主要研究方向:电力系统知识发现、人工智能在电力系统的应用。E-mail:liuyoubo@scu.edu.cn
邱高(1994—),男,通信作者,博士,主要研究方向:电力系统数据挖掘与知识发现技术。E-mail:qiugaoscu@stu.scu.edu.cn
收稿日期:2021-06-30,
修回日期:2021-12-13,
网络出版日期:2022-04-11,
纸质出版日期:2022-06-10
移动端阅览
刘季昂,刘友波,邱高等.基于高斯过程回归的电网运行方式快速置信评价[J].电力系统自动化,2022,46(11):181-190.
LIU Ji'ang,LIU Youbo,QIU Gao,et al.Fast Confidence Evaluation of Operation Mode of Power Grid Based on Gaussian Process Regression[J].Automation of Electric Power Systems,2022,46(11):181-190.
刘季昂,刘友波,邱高等.基于高斯过程回归的电网运行方式快速置信评价[J].电力系统自动化,2022,46(11):181-190. DOI: 10.7500/AEPS20210630012.
LIU Ji'ang,LIU Youbo,QIU Gao,et al.Fast Confidence Evaluation of Operation Mode of Power Grid Based on Gaussian Process Regression[J].Automation of Electric Power Systems,2022,46(11):181-190. DOI: 10.7500/AEPS20210630012.
高比例新能源接入使得电网运行不确定性增加、运行方式调整更频繁、评价指标更多。然而,复杂关联的多维指标随运行方式而变化,仅依靠人工已难以准确把握运行方式的优劣,且重复的安全校核易导致评价指标计算缓慢。因此,为提升运行方式调整效率,快速、准确的运行方式评价十分必要。首先,从安全性、稳定性、经济性3个维度提取基于电压-无功直流潮流、暂态稳定评估等计算的指标;然后,通过熵权-模糊层次分析法对多维指标进行融合标定,增强运行方式评价的可观性;最后,为实现运行方式快速评价,引入具备置信解析度的高斯过程回归来构建评价模型。采用改进的IEEE 39节点系统与中国西北某省级电网进行验证,结果表明所提方法能快速、准确、灵活地评价运行方式,可在运行方式编制过程中提供快速调整反馈结果,辅助提升运行方式的编制效率。
The integration of high penetration of renewable energy makes the power grid operation more uncertain
the operation mode adjustment more frequent
and the number of evaluation indices much more. However
the multi-dimensional complex and related indices change with the operation mode
and it is difficult to accurately grasp the advantages and disadvantages of the operation mode only depending on manual work. Furthermore
the repeated safety checking can easily lead to the slow calculation of the evaluation indices. Therefore
to improve the efficiency of operation mode adjustment
fast and accurate operation mode evaluation is essential. Firstly
the indices based on the voltage-reactive DC power flow and transient stability assessment are extracted from three dimensions of security
stability
and economy. Secondly
the entropy weight-fuzzy analytic hierarchy process is adopted to fuse and calibrate the multi-dimensional indices to enhance the observability of operation mode evaluation. Finally
the Gaussian process regression with certain interpretability and confidence resolution is introduced to construct the evaluation model to realize the fast evaluation of operation modes. The modified IEEE 39-bus system and a provincial power grid in Northwest China are used for verification. The results show that the proposed method can evaluate the operation mode quickly
accurately
and flexibly
and can provide rapid adjustment feedback results during the operation mode compilation process
helping improve the efficiency of the operation mode preparation.
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