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1.广东电网有限责任公司广州供电局电力调度控制中心,广东省广州市 510620
2.同济大学电子与信息工程学院,上海市 201804
刘有志(1982—),男,高级工程师,主要研究方向:电力系统自动化。E-mail:497660416@qq.com
资慧(1989—),女,硕士,工程师,主要研究方向:电力系统自动化。E-mail:745896793@qq.com
肖健(1966—),男,博士,高级工程师,主要研究方向:调度自动化、网络安全运行管理。E-mail:dilly01@163.com
林济铿(1967—),男,通信作者,教授,博士生导师,主要研究方向:电力系统安全经济调度、能量管理系统、电网优化和规划、电力市场及能源政策等。E-mail:mejklin@126.com
收稿日期:2020-09-24,
修回日期:2021-01-24,
网络出版日期:2021-04-23,
纸质出版日期:2021-06-25
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刘有志,资慧,肖健等.杠杆量测内涵分析及其改进广义潜能指标辨识方法[J].电力系统自动化,2021,45(12):92-100.
LIU Youzhi,ZI Hui,XIAO Jian,et al.Connotation Analysis of Leverage Measurement and Its Identification Method Based on Improved Generalized Potential Indicator[J].Automation of Electric Power Systems,2021,45(12):92-100.
刘有志,资慧,肖健等.杠杆量测内涵分析及其改进广义潜能指标辨识方法[J].电力系统自动化,2021,45(12):92-100. DOI: 10.7500/AEPS20200924001.
LIU Youzhi,ZI Hui,XIAO Jian,et al.Connotation Analysis of Leverage Measurement and Its Identification Method Based on Improved Generalized Potential Indicator[J].Automation of Electric Power Systems,2021,45(12):92-100. DOI: 10.7500/AEPS20200924001.
杠杆量测的准确辨识多年来一直是状态估计精度提升的瓶颈。文中针对杠杆量测这一重要的量测类型进行了深入分析和研究。首先,分析了2个关于杠杆量测定义的内涵一致性;进而,分别从代数和几何角度对杠杆量测的特性进行了分析,并以命题形式证明了无限靠近雅可比矩阵列空间的量测只能是杠杆量测;在此基础上,提出了基于潮流解及改进广义潜能指标的杠杆量测辨识新方法。相对于其他方法而言,该方法能够明显提升多个杠杆量测的正确辨识率。算例结果验证了所提方法的可行性和正确性。
The accurate identification of leverage measurement (LM) has been the bottleneck of precision improvement of state estimation for many years. This paper deeply analyzes and explores the relevant issues about the important measurement type of LM. Firstly
the connotation consistency of the two definitions on LM is analyzed. Secondly
the characteristics of LM are explored from both algebraic and geometric aspects. The proposition that a measurement infinitely closing to the column space of Jacobi matrix indeed is LM is strictly proven. On this basis
this paper proposes a new identification method of LM using the power flow solution and the improved generalized potential indicator. Compared with other methods
the proposed method can significantly improve the correct identification rate of multiple LMs. The example results verify the feasibility and validity of the proposed method.
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