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Bentolhoda Asl-Rousta S. Jamshid Mousavi Majid Ehtiat Mehdi Ahmadi 《Water Resources Management》2018,32(6):2181-2197
Calibration is an important step for the applicability of hydrological models as different parameter sets could produce similar results, calling for the use of appropriate performance criteria differentiating different parameter sets. This study focuses on the evaluation and comparison of SWAT-based hydrological modeling using both classical Nash Sutcliffe (NS) and the so called model selection criteria (MSC). Twelve SWAT models of the Sirwan River Basin in Iran are built based on different combinations of observed data, number of parameters and strategies used for calibration. The models are then evaluated against NS and eight MSC including AIC, AICc, AICu, CAIC, SIC, SICc, HIC and HICc, to rank the models and discriminate the most promising calibration setting from the aforementioned twelve candidate settings. Results show outperformance of MSC in terms of the robustness of the ranking outcomes both in calibration and validation phases as well as their discriminating power. 相似文献
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水情自动测报系统的可靠性措施 总被引:1,自引:0,他引:1
在分析可靠性有关概念的基础上,从总体、仪器、防雷、软件等方面总结了水情自动测报系统的可靠性设计经验,为提高设计、验收水平提供参考。 相似文献
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天生桥水电站水情自动测报系统通信方式为国际移动卫星组织提供的Inmarsat-C卫星组网方式与甚高频(VHF)组网方式混合组网。将36个遥测站的水文数据通过卫星、VHF、微波、光纤等通信方式传送到中心站,同时通过甚小天线地面站(VSAT)将鲁布革水电站水情数据接入该系统,从而实现了电厂控制流域水文数据的采集及处理、数据库的管理及维护、洪水预报、洪水调度及发电调度、网络管理等功能,满足了天生桥一、二级水电站防洪度汛和优化调度的需要,为天生桥一、二级电站效益的最大化提供了保证。 相似文献
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Samah Larabi André St-Hilaire Fateh Chebana Marco Latraverse 《Water Resources Management》2018,32(1):195-211
It has been argued that rainfall-runoff model calibration based solely on streamflow is not sufficient to evaluate the realism of a hydrological model to represent the internal fluxes. Therefore, model calibration has evolved to evaluating model performance using a number of hydrological signatures that link the model to the underlying processes. However, this approach uses goodness-of-fit measures, unable to describe the entire dynamic of time series, to evaluate model consistency and to simulate hydrological signatures. The present paper develops a stepwise multicriteria calibration using hydrograph partitioning and calibration criteria defined on the basis of Functional Data Analysis (FDA), a statistical tool that conserves all important features of the hydrograph by approximating times series as a single function. The aim of this approach is to improve model realism by scrutinizing model components and by evaluating its ability to reproduce the entire flow dynamic. The proposed approach is compared to a calibration against daily streamflow only. The stepwise calibration improved the estimation of the flood curve, the annual peak volume as well as the performance of the model at sites other than the calibration station. 相似文献
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介绍了水情自动测报系统的基本功能,阐述了数据库备份在水情自动测报系统设计、实施及应用中的重要性。在此基础上进一步提出了完整的数据库自动备份的设计方案,解决了用户手工备份过程复杂且容易出错的难题。 相似文献
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介绍了青溪水电站遥测系统改造项目,设备选型、系统安装,以及系统改造后运行情况,分析了GPRS、 CDMA通信方式的优点、使用注意事项,肯定了系统性价比,说明值得推广应用的理由。 相似文献
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郭文泉 《水电自动化与大坝监测》2007,31(3):71-74
介绍了洪门水电厂水情自动测报系统的建设过程、系统升级改造的必要性和设计方案、改造后系统的特色和日常维护管理,以及应用推广及创造的社会、经济效益。 相似文献
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大多数水文自动测报系统的测站应用太阳能电池浮充蓄电池的自动供电方式,所用的蓄电池容量和太阳能电池功率要按照测站设备的耗电量和当地的太阳辐射数据进行设计计算。介绍了一种计算方法,可以由此了解测站供电系统的设计过程。 相似文献
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针对水电厂生产现场多功能百超表无法开展检定的难题,成功研发了该表的自动校验系统。该系统充分考虑了现场遥测输入回路接口的特殊性,采用现代检测、高速采样、复杂的可编程逻辑阵列等高精密电子芯片,开发了功能强大的通信协议配置库,完成了校验仪器与被测装置的MB+(Modbus plus)协议通信,能够满足国内使用各种通信协议输出的多功能仪表的检定要求,真正实现了对多功能百超表的全自动校验,系统通过了权威部门的认证,填补了国内该校验领域的空白。 相似文献
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介绍了超短波和GPRS技术作为信息传输主备信道在MOSCAD水情自动测报系统中的应用,说明了系统应用中的硬件配置、详细设计和通信过程的控制体制.实际运行表明,以超短波为主信道,GPRS为备用信道的组网方式是可行的,具有较高的实时性和可靠性. 相似文献
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单频组网技术在红枫电厂水情自动测报系统中的应用 总被引:1,自引:1,他引:1
单频组网是水情自动测报系统中采用特高频信道传输的关键技术。介绍了南瑞水情公司的远程传输控制协议——NARI/SP及其在红枫电厂水情自动测报系统中的应用设计,组建了复杂的特高频传输网络,实现了中心站对遥测路由的完全控制,不仅节约了宝贵的频点资源,而且有效地提高了系统的运行和维护效率。 相似文献