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1.西安理工大学电气工程学院,陕西省西安市 710054
2.国网陕西省电力公司西安供电公司,陕西省西安市 710032
3.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
Received:22 June 2022,
Revised:2022-11-16,
Published Online:23 February 2023,
Published:25 March 2023
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马文涛,寇晓,郭耀松等.基于扩展KRSL无迹卡尔曼滤波的约束动态状态估计[J].电力系统自动化,2023,47(6):185-196.
MA Wentao,KOU Xiao,GUO Yaosong,et al.Constrained Dynamic State Estimation Based on Extended Kernel Risk Sensitive Loss Unscented Kalman Filter[J].Automation of Electric Power Systems,2023,47(6):185-196.
马文涛,寇晓,郭耀松等.基于扩展KRSL无迹卡尔曼滤波的约束动态状态估计[J].电力系统自动化,2023,47(6):185-196. DOI: 10.7500/AEPS20220622003.
MA Wentao,KOU Xiao,GUO Yaosong,et al.Constrained Dynamic State Estimation Based on Extended Kernel Risk Sensitive Loss Unscented Kalman Filter[J].Automation of Electric Power Systems,2023,47(6):185-196. DOI: 10.7500/AEPS20220622003.
动态状态估计作为监测系统动态变化的有效手段,对电力系统稳定运行具有重要意义。然而
采集和传输的数据中往往存在时变非高斯量测噪声和离群值,使得基于均方误差准则的传统卡尔曼滤波估计方法的精度不高。为此,首先定义广义核风险敏感损失函数,将其引入无迹卡尔曼滤波框架以实现鲁棒状态估计。然后,考虑同步发电机和控制器模型存在不同条件约束,通过伪量测法将约束条件引入上述估计算法中,以解决估计值超出真值变化范围而产生较大估计偏差的问题,从而进一步提升估计精度。最后,应用新英格兰16机68节点网络模型在不同条件下进行仿真实验
以验证算法的有效性。
As an effective means for monitoring the dynamic change of the system
the dynamic state estimation is of great significance to the stable operation of the power system. However
time-varying non-Gaussian measurement noise and outliers often exist in the collected and transmitted data
which reduces the accuracy of traditional Kalman filter estimation methods based on the mean squared error criterion. To this end
the generalized kernel risk sensitive loss function is defined firstly
and it is introduced into the unscented Kalman filter framework for robust state estimation. Secondly
considering the different condition constraints of the synchronous generator and controller models
the constraints are introduced into the aforementioned estimation algorithm through the pseudo-measurement method to solve the problem that the estimated value is beyond the true value range and produces a large estimation deviation
so as to further improve the estimation accuracy. Finally
the simulation experiments are performed under different conditions to verify the effectiveness of the proposed algorithm in the New England 16-machine 68-bus network model
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