| Parameter Modifiability Based Transformer Substation State Estimation |
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| 作者姓名： | CHENG Tong YAN Wei WEN Yu DU Peng |
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| 作者单位： | 1. College of Electrical Engineering, Chongqing University, Chongqing 400030, China ; 2. Dispatching Department, Chongqing Electric Power Dispatching Center, Chongqing 400014, China; 3. Guangzhou Power Supply Administration, China Southern Power Grid Com |
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| 摘 要： | The accuracy of transformer substation state estimation is widely low,and one reason of that is inaccurate(parameter) of model.Recently,most of papers about state estimation(SE) focus on improving algorithm.Based on classic SE and parameter estimation(PE),this paper takes advantage of the methods that putting parameters into state vector and putting parameters both into state vector and measurement vector in discussing the influence of parameter on transformer substation SE via simulation.The result of simulation shows: First,the error of parameters will be too high if only putting them into state vector,although the result of SE will be much better.Second,putting parameters both into state vector and measurement vector and giving them appropriate coefficient will lead a better result that can be used by engineering.
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| 关 键 词： | transformer state estimation parameter estimation |
| 收稿时间： | 2005/11/18 0:00:00 |
| 修稿时间： | 2005/11/18 0:00:00 |
Parameter Modifiability Based Transformer Substation State Estimation |
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| CHENG Tong,YAN Wei,WEN Yu,DU Peng.Parameter Modifiability Based Transformer Substation State Estimation[J].Storage & Process,2006(3):32-35. |
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| Authors: | CHENG Tong YAN Wei WEN Yu DU Peng |
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| Institution: | 1. College of Electrical Engineering, Chongqing University, Chongqing 400030, China ; 2. Dispatching Department, Chongqing Electric Power Dispatching Center, Chongqing 400014, China; 3. Guangzhou Power Supply Administration, China Southern Power Grid Com |
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| Abstract: | The accuracy of transformer substation state estimation is widely low,and one reason of that is inaccurate(parameter) of model.Recently,most of papers about state estimation(SE) focus on improving algorithm.Based on classic SE and parameter estimation(PE),this paper takes advantage of the methods that putting parameters into state vector and putting parameters both into state vector and measurement vector in discussing the influence of parameter on transformer substation SE via simulation.The result of simulation shows: First,the error of parameters will be too high if only putting them into state vector,although the result of SE will be much better.Second,putting parameters both into state vector and measurement vector and giving them appropriate coefficient will lead a better result that can be used by engineering. |
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| Keywords: | transformer state estimation parameter estimation |
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