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In order to make reliable dynamic prediction of the potential risk of pitch system, aiming at the problems of multiple components, complex system and difficult fault feature extraction of pitch system, the fault tree is established through the induction and analysis of its fault point and fault transmission process, and then it is transformed into a dynamic Bayesian network (DBN) integrating Leaky Noisyor nodes, which ensures the accuracy of the model and has the dynamic prediction ability. The model is optimized and verified by using a 5fold crossvalidation method. The test results show that this method has high accuracy in risk prediction, fault cause analysis and risk dynamic evolution process analysis of pitch system, and has engineering application value in guiding the preventive maintenance of pitch system and ensuring the overall safety of wind turbine.
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为了对风电机组变桨系统的潜在风险进行可靠的动态预测,针对变桨系统部件种类多、系统复杂、故障特征提取困难的问题,文章首先对变桨系统故障点和故障传递过程进行归纳分析,建立故障树;然后将其转化为融合 Leaky NoisyOr 节点的动态贝叶斯网络(DBN),保证了模型精度并具备了动态预测能力;最后采用5折交叉验证的方式对模型进行寻优并验证。测试结果表明,该方法在对变桨系统进行风险预测、故障致因分析、风险动态演化过程分析方面准确率较高,可指导变桨系统进行预防性维护,在保证风电机组整体安全方面具有工程应用价值。
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冯红岩(1976-),女,硕士,高级工程师,研究方向为风力发电机组控制与故障诊断E-mail: fhywww555@sina.com。
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中国造船,
2020,
61(2): 220-228., articleTitle=基于故障树分析和贝叶斯网络方法的半潜式钻井平台系统多状态可靠性分析, refAbstract=null)], funds=[Fund(id=1154430614322270811, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154430577483698511, awardId=20YDTPJC01850, language=CN, fundingSource=天津市科技计划项目技术创新引导专项优秀特派员项目(20YDTPJC01850), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1154430609461072369, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154430577483698511, xref=1, ext=[AuthorCompanyExt(id=1154430609469460979, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154430577483698511, companyId=1154430609461072369, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1 Tianjin Sino-German University of Applied Sciences Tianjin 300350 China), AuthorCompanyExt(id=1154430609473655284, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154430577483698511, companyId=1154430609461072369, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1 天津中德应用技术大学 天津 300350)]), AuthorCompany(id=1154430609565929974, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154430577483698511, xref=2, ext=[AuthorCompanyExt(id=1154430609574318582, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154430577483698511, companyId=1154430609565929974, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 Tianjin Resource Electric Co., Ltd. Tianjin 300308 China), AuthorCompanyExt(id=1154430609582707191, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154430577483698511, companyId=1154430609565929974, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 天津瑞源电气有限公司 天津 300308)])], figs=[ArticleFig(id=1154430613282083397, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154430577483698511, language=EN, label=Fig. 1, caption=
Composition and schematic diagram of pitch system, figureFileSmall=eQhVqQ6exsqdUseh80t5Vw==, figureFileBig=6/SfPQZX/kTOQxPyCMil3w==, tableContent=null), ArticleFig(id=1154430613332415047, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154430577483698511, language=CN, label=图 1, caption=
变桨系统的构成和原理图, figureFileSmall=eQhVqQ6exsqdUseh80t5Vw==, figureFileBig=6/SfPQZX/kTOQxPyCMil3w==, tableContent=null), ArticleFig(id=1154430613500187211, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154430577483698511, language=EN, label=Fig. 2, caption=
Fault tree of pitch system, figureFileSmall=naBLw/4y4NUqegHHtfAjBg==, figureFileBig=Z9PcbBTHJYzPDlf5LgNHYA==, tableContent=null), ArticleFig(id=1154430613558907467, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154430577483698511, language=CN, label=图 2, caption=
变桨系统故障树, figureFileSmall=naBLw/4y4NUqegHHtfAjBg==, figureFileBig=Z9PcbBTHJYzPDlf5LgNHYA==, tableContent=null), ArticleFig(id=1154430613617627725, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154430577483698511, language=EN, label=Fig. 3, caption=
Dynamic Bayesian network model of pitch system, figureFileSmall=xgHDxv13PRn2+Tez4A92lQ==, figureFileBig=YCZ709FH4xDCS3hj1pI+DA==, tableContent=null), ArticleFig(id=1154430613659570767, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154430577483698511, language=CN, label=图 3, caption=
变桨系统的动态贝叶斯网络模型, figureFileSmall=xgHDxv13PRn2+Tez4A92lQ==, figureFileBig=YCZ709FH4xDCS3hj1pI+DA==, tableContent=null), ArticleFig(id=1154430613709902417, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154430577483698511, language=EN, label=Fig. 4, caption=
Reliability prediction curve of motor and super capacitor, figureFileSmall=KZBZrZHb+Y7eDCwtjIoNOg==, figureFileBig=q8JX3FfZAfcN+1+iW9dnIQ==, tableContent=null), ArticleFig(id=1154430613760234066, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154430577483698511, language=CN, label=图 4, caption=
电机和超级电容的可靠度预测曲线, figureFileSmall=KZBZrZHb+Y7eDCwtjIoNOg==, figureFileBig=q8JX3FfZAfcN+1+iW9dnIQ==, tableContent=null), ArticleFig(id=1154430613806371411, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154430577483698511, language=EN, label=Fig. 5, caption=
Evolution process of super capacitor temperature overrun risk, figureFileSmall=u3Rf4uZBifeJr4DG9KUnOw==, figureFileBig=+Gna81z50ltlS4dMiPrt0g==, tableContent=null), ArticleFig(id=1154430613860897364, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154430577483698511, language=CN, label=图 5, caption=
超级电容温度超限风险演化过程, figureFileSmall=u3Rf4uZBifeJr4DG9KUnOw==, figureFileBig=+Gna81z50ltlS4dMiPrt0g==, tableContent=null), ArticleFig(id=1154430613911229013, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154430577483698511, language=EN, label=Table 1, caption=
Fault distribution of pitch system in a wind farm, figureFileSmall=null, figureFileBig=null, tableContent=
| 故障名称 | 出现概率/% |
| 变桨控制 | 40 |
| 变桨角度 | 29 |
| 后备电源 | 17 |
| 变桨电机 | 7 |
| 变桨通信 | 6 |
| 变桨驱动 | 1 |
), ArticleFig(id=1154430613965754966, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154430577483698511, language=CN, label=表 1, caption=
某风场变桨系统故障分布, figureFileSmall=null, figureFileBig=null, tableContent=
| 故障名称 | 出现概率/% |
| 变桨控制 | 40 |
| 变桨角度 | 29 |
| 后备电源 | 17 |
| 变桨电机 | 7 |
| 变桨通信 | 6 |
| 变桨驱动 | 1 |
), ArticleFig(id=1154430614020280919, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154430577483698511, language=EN, label=Table 2, caption=
Fault event and probability of pitch systems, figureFileSmall=null, figureFileBig=null, tableContent=
| 节点 | 事件 | | | 节点 | 事件 | | |
| T | 变奖系统故障 | 32.81 | 21.7 | X12 | 充电超时 | 1.2 | 0.86 |
| M1 | 驱动器故障 | 0.24 | 0.33 | X13 | 充电器损坏 | 0.39 | 0.75 |
| M2 | 变桨电机故障 | 2.34 | 1.66 | X14 | 充电器通信故障 | - | 0.93 |
| M3 | 后备电源故障 | 5.88 | 2.69 | X15 | 电池柜温控系统故障 | 0.08 | 0.02 |
| M4 | 通信故障 | - | 2.34 | X16 | 串并联连接松动 | - | 0.04 |
| M5 | 变桨控制故障 | 24.35 | 14.2 | X17 | 电容单体性能降低 | 1.2 | 0 |
| Y1 | 驱动器过流或过温 | 0.18 | 0.42 | Y8 | 外部通信故障 | - | 3.9 |
| Y2 | 直流母线电压异常 | 0.56 | 0.62 | Y9 | 内部通信故障 | - | 0.12 |
| X1 | 电流检测回路故障 | - | 0.32 | X18 | 通信线虚接或断开 | - | 1.83 |
| X2 | 内部短路 | - | 0.01 | X19 | 滑环接触不稳定 | - | 1.65 |
| X3 | 散热系统故障 | - | 0.83 | X20 | 航空插头松动 | - | 0.13 |
| X4 | ${400}\mathrm{\;V}$ 电源故障 | 0.11 | 0.9 | X21 | 通信控制板损坏 | - | 0.11 |
| X5 | 加减速时间短 | 0.06 | 0 | Y10 | 回桨超时 | 12.4 | 10.11 |
| Y3 | 绕组温度超限 | 0.33 | 0.97 | Y11 | 奖角偏差超限 | 7.3 | 3.18 |
| Y4 | 刹车失败 | 1.34 | 0.86 | Y12 | 主副编码器偏差过大 | 2.9 | 0.02 |
| Y5 | 电机过流 | 1.2 | 0.11 | Y13 | 变桨安全链断开 | 0.52 | 0.427 |
| X6 | 匝间短路 | - | 0.02 | X22 | 电机驱动功率偏低 | 2.23 | 2.1 |
| X7 | 散热或测温故障 | - | 0.11 | X23 | 传感器零位待校准 | 2.9 | 2.3 |
| X8 | 刹车断线或虚接 | - | 0.78 | X24 | 主旋编损坏或松动 | 2.2 | 1.9 |
| X9 | 电磁刹车故障 | - | 0.01 | X25 | 副旋编损坏或松动 | 2.1 | 0.02 |
| X10 | 变桨机械传动卡涩 | 10.6 | 8.2 | X26 | 95°限位开关被撞开 | - | 4.88 |
| X11 | 输出短路 | - | 0.01 | X27 | LVRT 故障 | - | 0.13 |
| Y6 | 超容电压超限 | 1.12 | 1.62 | X28 | 变桨控制器故障 | - | 0.9 |
| Y7 | 超容温度超限 | 0.073 | 0.042 | X29 | 高于额定功率运行 | - | 23 |
), ArticleFig(id=1154430614087389784, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154430577483698511, language=CN, label=表 2, caption=
变桨系统故障事件及概率, figureFileSmall=null, figureFileBig=null, tableContent=
| 节点 | 事件 | | | 节点 | 事件 | | |
| T | 变奖系统故障 | 32.81 | 21.7 | X12 | 充电超时 | 1.2 | 0.86 |
| M1 | 驱动器故障 | 0.24 | 0.33 | X13 | 充电器损坏 | 0.39 | 0.75 |
| M2 | 变桨电机故障 | 2.34 | 1.66 | X14 | 充电器通信故障 | - | 0.93 |
| M3 | 后备电源故障 | 5.88 | 2.69 | X15 | 电池柜温控系统故障 | 0.08 | 0.02 |
| M4 | 通信故障 | - | 2.34 | X16 | 串并联连接松动 | - | 0.04 |
| M5 | 变桨控制故障 | 24.35 | 14.2 | X17 | 电容单体性能降低 | 1.2 | 0 |
| Y1 | 驱动器过流或过温 | 0.18 | 0.42 | Y8 | 外部通信故障 | - | 3.9 |
| Y2 | 直流母线电压异常 | 0.56 | 0.62 | Y9 | 内部通信故障 | - | 0.12 |
| X1 | 电流检测回路故障 | - | 0.32 | X18 | 通信线虚接或断开 | - | 1.83 |
| X2 | 内部短路 | - | 0.01 | X19 | 滑环接触不稳定 | - | 1.65 |
| X3 | 散热系统故障 | - | 0.83 | X20 | 航空插头松动 | - | 0.13 |
| X4 | ${400}\mathrm{\;V}$ 电源故障 | 0.11 | 0.9 | X21 | 通信控制板损坏 | - | 0.11 |
| X5 | 加减速时间短 | 0.06 | 0 | Y10 | 回桨超时 | 12.4 | 10.11 |
| Y3 | 绕组温度超限 | 0.33 | 0.97 | Y11 | 奖角偏差超限 | 7.3 | 3.18 |
| Y4 | 刹车失败 | 1.34 | 0.86 | Y12 | 主副编码器偏差过大 | 2.9 | 0.02 |
| Y5 | 电机过流 | 1.2 | 0.11 | Y13 | 变桨安全链断开 | 0.52 | 0.427 |
| X6 | 匝间短路 | - | 0.02 | X22 | 电机驱动功率偏低 | 2.23 | 2.1 |
| X7 | 散热或测温故障 | - | 0.11 | X23 | 传感器零位待校准 | 2.9 | 2.3 |
| X8 | 刹车断线或虚接 | - | 0.78 | X24 | 主旋编损坏或松动 | 2.2 | 1.9 |
| X9 | 电磁刹车故障 | - | 0.01 | X25 | 副旋编损坏或松动 | 2.1 | 0.02 |
| X10 | 变桨机械传动卡涩 | 10.6 | 8.2 | X26 | 95°限位开关被撞开 | - | 4.88 |
| X11 | 输出短路 | - | 0.01 | X27 | LVRT 故障 | - | 0.13 |
| Y6 | 超容电压超限 | 1.12 | 1.62 | X28 | 变桨控制器故障 | - | 0.9 |
| Y7 | 超容温度超限 | 0.073 | 0.042 | X29 | 高于额定功率运行 | - | 23 |
), ArticleFig(id=1154430614158692953, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154430577483698511, language=EN, label=Table 3, caption=
Results of model cross validation and optimization, figureFileSmall=null, figureFileBig=null, tableContent=
| 验证次数 | 得分 |
| 1 | 0.892 |
| 2 | 0.934 |
| 3 | 0.867 |
| 4 | 0.902 |
| 5 | 0.926 |
| 平均值 | 0.904 |
), ArticleFig(id=1154430614209024602, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154430577483698511, language=CN, label=表 3, caption=
模型交叉验证寻优的结果, figureFileSmall=null, figureFileBig=null, tableContent=
| 验证次数 | 得分 |
| 1 | 0.892 |
| 2 | 0.934 |
| 3 | 0.867 |
| 4 | 0.902 |
| 5 | 0.926 |
| 平均值 | 0.904 |
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