The dispatching center of power-grid companies is also the data center of the power grid where gathers great amount of operating information. The valuable information contained in these data means a lot for power grid...The dispatching center of power-grid companies is also the data center of the power grid where gathers great amount of operating information. The valuable information contained in these data means a lot for power grid operating management, but at present there is no special method for the management of operating data resource. This paper introduces the operating analysis and data mining system for power grid dispatching. The technique of data warehousing online analytical processing has been used to manage and analysis the great capacity of data. This analysis system is based on the real-time data of the power grid to dig out the potential rule of the power grid operating. This system also provides a research platform for the dispatchers, help to improve the JIT (Just in Time) management of power system.展开更多
With the reform of rural network enterprise system,the speed of transfer property rights in rural power enterprises is accelerated.The evaluation of the operation and development status of rural power enterprises is d...With the reform of rural network enterprise system,the speed of transfer property rights in rural power enterprises is accelerated.The evaluation of the operation and development status of rural power enterprises is directly related to the future development and investment direction of rural power enterprises.At present,the evaluation of the production and operation of rural network enterprises and the development status of power network only relies on the experience of the evaluation personnel,sets the reference index,and forms the evaluation results through artificial scoring.Due to the strong subjective consciousness of the evaluation results,the practical guiding significance is weak.Therefore,distributed data mining method in rural power enterprises status evaluation was proposed which had been applied in many fields,such as food science,economy or chemical industry.The distributed mathematical model was established by using principal component analysis(PCA)and regression analysis.By screening various technical indicators and determining their relevance,the reference value of evaluation results was improved.Combined with statistical program for social sciences(SPSS)data analysis software,the operation status of rural network enterprises was evaluated,and the rationality,effectiveness and economy of the evaluation was verified through comparison with current evaluation results and calculation examples of actual grid operation data.展开更多
为了更加科学高效地评估低压电网改造工程施工质量,保证低压电网改造后的平稳运行,设计了一款基于数据挖掘的低压电网改造工程验收系统。利用Microsoft Visual Studio 2019平台与C#语言,通过数据处理、项目分类管理、工程验收、工具管...为了更加科学高效地评估低压电网改造工程施工质量,保证低压电网改造后的平稳运行,设计了一款基于数据挖掘的低压电网改造工程验收系统。利用Microsoft Visual Studio 2019平台与C#语言,通过数据处理、项目分类管理、工程验收、工具管理、用户管理板块构建低压电网改造工程验收系统框架。数据处理板块引入贝叶斯决策树方法剔除工程数据噪声,使用数据挖掘技术中的支持向量机组建若干二值分类器,把二值分类器输出类别标识最大的类作为项目分类结果;将径向基核函数当作支持向量机核函数,使用网格搜寻法挑选训练参数对,根据交叉验证方法将工程信息分割成多个集合,最终在工程验收板块输出低压电网改造工程验收结果。实验结果表明,所建系统响应速度快,能实现电网改造项目数据收集、工程整改、追踪检测、竣工验收等文档与图纸的整理归档,为低压电网改造工程验收提供可靠运行平台。展开更多
文摘The dispatching center of power-grid companies is also the data center of the power grid where gathers great amount of operating information. The valuable information contained in these data means a lot for power grid operating management, but at present there is no special method for the management of operating data resource. This paper introduces the operating analysis and data mining system for power grid dispatching. The technique of data warehousing online analytical processing has been used to manage and analysis the great capacity of data. This analysis system is based on the real-time data of the power grid to dig out the potential rule of the power grid operating. This system also provides a research platform for the dispatchers, help to improve the JIT (Just in Time) management of power system.
基金Supported by Funding(2017RAXXJ075)from Harbin Applied Technology Research and Development Project
文摘With the reform of rural network enterprise system,the speed of transfer property rights in rural power enterprises is accelerated.The evaluation of the operation and development status of rural power enterprises is directly related to the future development and investment direction of rural power enterprises.At present,the evaluation of the production and operation of rural network enterprises and the development status of power network only relies on the experience of the evaluation personnel,sets the reference index,and forms the evaluation results through artificial scoring.Due to the strong subjective consciousness of the evaluation results,the practical guiding significance is weak.Therefore,distributed data mining method in rural power enterprises status evaluation was proposed which had been applied in many fields,such as food science,economy or chemical industry.The distributed mathematical model was established by using principal component analysis(PCA)and regression analysis.By screening various technical indicators and determining their relevance,the reference value of evaluation results was improved.Combined with statistical program for social sciences(SPSS)data analysis software,the operation status of rural network enterprises was evaluated,and the rationality,effectiveness and economy of the evaluation was verified through comparison with current evaluation results and calculation examples of actual grid operation data.
文摘为了更加科学高效地评估低压电网改造工程施工质量,保证低压电网改造后的平稳运行,设计了一款基于数据挖掘的低压电网改造工程验收系统。利用Microsoft Visual Studio 2019平台与C#语言,通过数据处理、项目分类管理、工程验收、工具管理、用户管理板块构建低压电网改造工程验收系统框架。数据处理板块引入贝叶斯决策树方法剔除工程数据噪声,使用数据挖掘技术中的支持向量机组建若干二值分类器,把二值分类器输出类别标识最大的类作为项目分类结果;将径向基核函数当作支持向量机核函数,使用网格搜寻法挑选训练参数对,根据交叉验证方法将工程信息分割成多个集合,最终在工程验收板块输出低压电网改造工程验收结果。实验结果表明,所建系统响应速度快,能实现电网改造项目数据收集、工程整改、追踪检测、竣工验收等文档与图纸的整理归档,为低压电网改造工程验收提供可靠运行平台。