基于信息熵的机组运行劣化度综合指标
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摘要
水轮发电机组故障诊断与运行状态评价课题是当前水电系统研究课题中的热点。首先从分析影响水电机组运行状态的相关参数出发,得到的故障熵指标反映了机组的故障发展和变化情况,融合了时域、频域和时频以外的一些信息,能有效地反映机组的运行状态。提出了机组运行状态综合劣化度的指标,机组运行劣化度综合指标结合了机组运行工况的信息和故障熵的长处,反映机组状态劣化的程度,是一种有效地表征机组状态是否劣化的参量。将上述指标在水轮发电机组进行了运行状态评价的实际应用,结果表明研究成果对机组的运行稳定评价是有效的。
The fault diagnosis and the performance evaluation of the hydroelectric generating sets (HGSs) is a hot spot in the research on hydraulic systems. In this paper, the relevant parameters influencing the performance of HGSs are analyzed first. The index of evaluation of the overall performance is established on information entropy by the composite information on the time, frequency domain, fault probability and running condition. These indices are applied in the evaluation of the performance of HGSs and it is proved that the results are effective for the evaluation of machine sets stability.
The fault diagnosis and the performance evaluation of the hydroelectric generating sets (HGSs) is a hot spot in the research on hydraulic systems. In this paper, the relevant parameters influencing the performance of HGSs are analyzed first. The index of evaluation of the overall performance is established on information entropy by the composite information on the time, frequency domain, fault probability and running condition. These indices are applied in the evaluation of the performance of HGSs and it is proved that the results are effective for the evaluation of machine sets stability.
引文
[1]马笑潇,黄席樾,黄敏,等.基于信息熵的诊断过程认知信息流分 析.重庆大学学报(自然科学版),2002,25(5):25-28. MA Xiao-xiao, HUANG Xi-yue, HUANG Min et al. Analysis of Information Flow Based on Entropy of Fault Diagnosis. Journal of Chongqing University (Natural Science Edition), 2002, 25(5): 25-28.
[2]闵小宝,吴根秀.信息熵与决策之间关系的讨论.计算机与现代 化,2001,(1):32-35,63. MIN Xiao-bao. WU Gen-xiu. The Discussion of the Relationship Between Information Entropy and Decision. Computer and Modernization, 2001, (1). 32-35, 63.
[3]李圣强.杜建国,康春丽.信息熵在地下流体资料处理中的应用. 华北地震科学,2001,19(2):1-7. LI Sheng-qiang, DU Jian-guo, KANG Chun-li. The Application of Information Entropy in Subsurface Fluid Data Processing. North China Earthquake Sciences, 2001, 19(2): 1-7.
[4] FU Xiang-qian, LIU Guang-lin, JIANG Jin et al. Automatic Identification of Axis Orbit Based on Both Wavelet Moment Invariants and Neural Network. Journal of Wuhan University (Natural Science Edition), 2003, 8(2A): 414-418.
[5]符向前,刘光临,蒋劲.BP神经网络在水轮发电机组状态监测与 诊断系统中的应用.武汉大学学报(工学版),2002,35(1):24- 28. FU Xiang-qian, LIU Guang-lin, JIANG Jin. The Application of BP Neural Network on the Condition Monitoring and Fault Diagnosis System for Hydroelectric Generating Set. Journal of Wuhan University (Engineering Edition), 2002, 35(1): 24-28.
[6]符向前,刘光临,蒋劲.隔河岩水轮发电机组状态监测与诊断系 统.水电自动化与大坝监测,2002.26(3):26-28. FU Xiang-qian, LIU Guang-lin, JIANG Jin. A Condition Monitoring and Fault Diagnosis System for Hydroelectric Generating Set at Geheyan Hydropower Station. Hydropower Automation and Dam Monitoring, 2002, 26(3): 26-28.
[2]闵小宝,吴根秀.信息熵与决策之间关系的讨论.计算机与现代 化,2001,(1):32-35,63. MIN Xiao-bao. WU Gen-xiu. The Discussion of the Relationship Between Information Entropy and Decision. Computer and Modernization, 2001, (1). 32-35, 63.
[3]李圣强.杜建国,康春丽.信息熵在地下流体资料处理中的应用. 华北地震科学,2001,19(2):1-7. LI Sheng-qiang, DU Jian-guo, KANG Chun-li. The Application of Information Entropy in Subsurface Fluid Data Processing. North China Earthquake Sciences, 2001, 19(2): 1-7.
[4] FU Xiang-qian, LIU Guang-lin, JIANG Jin et al. Automatic Identification of Axis Orbit Based on Both Wavelet Moment Invariants and Neural Network. Journal of Wuhan University (Natural Science Edition), 2003, 8(2A): 414-418.
[5]符向前,刘光临,蒋劲.BP神经网络在水轮发电机组状态监测与 诊断系统中的应用.武汉大学学报(工学版),2002,35(1):24- 28. FU Xiang-qian, LIU Guang-lin, JIANG Jin. The Application of BP Neural Network on the Condition Monitoring and Fault Diagnosis System for Hydroelectric Generating Set. Journal of Wuhan University (Engineering Edition), 2002, 35(1): 24-28.
[6]符向前,刘光临,蒋劲.隔河岩水轮发电机组状态监测与诊断系 统.水电自动化与大坝监测,2002.26(3):26-28. FU Xiang-qian, LIU Guang-lin, JIANG Jin. A Condition Monitoring and Fault Diagnosis System for Hydroelectric Generating Set at Geheyan Hydropower Station. Hydropower Automation and Dam Monitoring, 2002, 26(3): 26-28.
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