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In response to the problem of the conventional cooling early warning of wind turbine generator, this paper puts forward the cooling early warning method of wind turbine generator based on multiple linear regression, which makes effective use of the existing new energy centralized control system environment, adopts Pearson coefficient analysis and establishes the early warning framework, and forms the early warning model by multiple linear regression calculation. At the same time, according to different models and different working conditions, different evaluation indexes of generator cooling warning threshold are established, which makes the warning model more flexible and more accurate. The verification results of the example show that this method can correctly achieve the cooling early warning for wind turbine generators.
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针对常规风机发电机散热预警问题,本文提出基于多元线性回归的风机发电机散热健康度评估方法。利用现有新能源集控大系统环境,采用皮尔逊系数分析并建立评估框架,通过多元线性回归计算形成机器学习模型。根据预测曲线与实际曲线,获得发电机散热性能偏差值曲线,建立发电机散热健康度评价指标,对风机发电机散热性能进行实时评估,进而形成一套通用的风机部件健康度评价方法。实例验证结果表明,该方法能够正确实现风机发电机散热预警。
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姜凯(1989—),男,江苏省南京市人,硕士,中级工程师,主要从事新能源系统大数据分析、应用处理方面的研究工作。
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39(3): 50-53., articleTitle=皮尔逊相关系数在风电功率组合预测中的应用, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1194653341994160980, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1194580238333079904, xref=null, ext=[AuthorCompanyExt(id=1194653341998355285, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1194580238333079904, companyId=1194653341994160980, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=NR Electric Co., Ltd, Nanjing 211102), AuthorCompanyExt(id=1194653342006743894, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1194580238333079904, companyId=1194653341994160980, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=南京南瑞继保电气有限公司,南京 211102)])], figs=[ArticleFig(id=1194653343457973099, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1194580238333079904, language=EN, label=null, caption=null, figureFileSmall=v2rOU3FQXwnm2+boFhbUoA==, figureFileBig=mNSZstmz/eZGfLWh5SD3IA==, tableContent=null), ArticleFig(id=1194653343537664876, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1194580238333079904, language=CN, label=图1, caption=
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| 时间 | 实际值 | 预测值 | 健康度指标 |
| 05:00 | 56.7 | 54.4 | 1.1 |
| 06:00 | 83.6 | 68.3 | 7.4 |
| 06:20 | 81.2 | 65.6 | 10.1 |
| 07:00 | 70.0 | 64.0 | 6.8 |
| 08:00 | 55.5 | 54.5 | 6.1 |
| 09:00 | 72.9 | 70.6 | 3.3 |
| 10:00 | 100.4 | 76.6 | 3.5 |
| 11:00 | 88.8 | 74.5 | 8.6 |
| 12:00 | 85.1 | 74.2 | 9.8 |
| 13:00 | 83.5 | 73.9 | 10.4 |
| 14:00 | 82.4 | 73.8 | 9.3 |
| 15:00 | 87.5 | 64.2 | 8.9 |
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4月19日健康度评估对比 单位: ℃
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| 时间 | 实际值 | 预测值 | 健康度指标 |
| 05:00 | 56.7 | 54.4 | 1.1 |
| 06:00 | 83.6 | 68.3 | 7.4 |
| 06:20 | 81.2 | 65.6 | 10.1 |
| 07:00 | 70.0 | 64.0 | 6.8 |
| 08:00 | 55.5 | 54.5 | 6.1 |
| 09:00 | 72.9 | 70.6 | 3.3 |
| 10:00 | 100.4 | 76.6 | 3.5 |
| 11:00 | 88.8 | 74.5 | 8.6 |
| 12:00 | 85.1 | 74.2 | 9.8 |
| 13:00 | 83.5 | 73.9 | 10.4 |
| 14:00 | 82.4 | 73.8 | 9.3 |
| 15:00 | 87.5 | 64.2 | 8.9 |
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