1.河海大学可再生能源发电技术教育部工程研究中心,江苏省南京市210098;2.南瑞集团公司(国网电力科学研究院),江苏省南京市210003
针对非主导参数估计易受量测噪声及不良数据影响的特点,提出了基于主导与非主导参数的加权最小绝对值抗差参数估计。对参数估计错误的原因进行了系统分析,并给出了参数主导性评估方法。利用非线性原 — 对偶内点法进行模型求解,与传统线性内点法相比,该方法在提高求解精度的同时减少了迭代次数。基于IEEE 30节点系统和2个实际省级电网的计算分析,将所提出的方法与传统加权最小二乘法参数估计进行比较,测试结果验证了所提出方法的有效性。
国家高技术研究发展计划(863计划)
1.Research Center for Renewable Energy Generation Engineering of Ministry of Education,Hohai University,Nanjing210098,China;2.NARI Group Corporation(State Grid Electric Power Research Institute),Nanjing210003,China
In view of the drawbacks of dominant parameter assessment in dealing with bad data in measurement,a method for robust parameter estimation using the weighted absolute least value(WLAV)based on dominant and non-dominant robust parameter estimation assessment is presented.The dominant assessment method is proposed by a systematic analysis of the causes of parameter estimation errors.Compared with the traditional linear interior point method,the model can be successfully solved by the nonlinear primal-dual interior point method(PDIPM),which is able to reduce the number of iterations greatly while improving the calculation accuracy.Finally,on the basis of the calculation and analysis of an IEEE 30-bus system and two actual provincial power grids,the performance of the proposed method is compared with the traditional weighted least square estimation,and the results show the effectiveness of the proposed method.
[1] | 颜全椿.基于主导与非主导参数的非线性加权最小绝对值参数估计[J].电力系统自动化,2013,37(20):71-76. DOI:10.7500/AEPS201209114. YAN Quanchun. Nonlinear Weighted Absolute Least Value Parameter Estimation Based on Dominant and Non-dominant Parameter[J]. Automation of Electric Power Systems, 2013, 37(20):71-76. DOI:10.7500/AEPS201209114. |