多梯级泵站群调度自动化系统设计

根据甘肃省景电多梯级泵站群的特点,在总结景电工程泵站计算机监控系统建设与管理经验的基础上,探索开发多梯级泵站群调度自动化系统,目的在于提高多梯级泵站群运行调度自动化水平,为提高调度水平、提高工程经济效益、降低能源消耗提供技术支持.     

管渠结合的梯级泵站扬程优化分配研究

密云水库调蓄工程是保证北京市区供水安全的一项关键工程，极大程度地缓解了北京市水资源供需紧平衡状态。为实现工程的经济运行，以密云水库调蓄工程后三级泵站（郭家坞、雁栖、溪翁庄）为研究对象，基于水力学模型建立梯级泵站扬程优化分配模型，采用IAPSO优化算法对模型进行求解。结果表明：对于管渠结合的梯级泵站输水系统，在不同输水流量下，梯级泵站的扬程优化方案较实际运行方案相比效率可提高5.2%；梯级间水力损失和泵站转速会对优化结果有较大的影响。该研究可为梯级泵站经济运行提供行之有效的运行方案，保证梯级泵站输水系统的安全经济运行。     

基于分时电价的梯级泵站输水系统日优化运行

为了提高梯级泵站输水系统日运行效益,通过分析梯级泵站输水系统,提出了梯级泵站输水系统整体运行效率的定义及表达式,分析了梯级泵站输水系统日运行费用的影响因素及优化机制.在此基础上,以日运行费用最小为目标,考虑分时电价,日输水总量,泵站进、出水池水位等约束条件,以时段流量分配、级间水位等因素为决策变量,建立了梯级泵站输水系统日运行费用优化模型、梯级泵站输水系统运行效率优化模型和单级泵站运行效率优化模型,采用基于区间离散的动态规划法进行求解,进而确定梯级泵站输水系统日优化运行方案,包括各时段内梯级间水力(水位、流量)方案和各泵站内运行方案.将该优化方法应用于南水北调东线韩庄运河段梯级泵站工程,结果表明节约费用效果较为显著.     

甘肃沿黄提灌工程水力机械技术的发展

甘肃沿黄提灌工程对水泵选型，梯级泵站流量调节，泵站水狂防措施措施选择等技术有所创新和发展，对泵封控制设备与自动化及计算机监控技术等方面进行了新的探索，取得了新进展。     

丘陵地区梯级泵站提水灌溉系统分级优化研究

针对目前丘陵地区梯级泵站提水灌溉系统规划中的缺陷，以提水工程的年折算费用最小为目标，建立了数学规划模型，并介绍了离散微分动态规划法来求解该模型，解决了长期困扰水利规划人员的丘陵地区梯级泵站规划中的两个难点问题：多级提水的级数如何确定；各级间的扬程如何分配。     

梯级泵站供水系统水资源优化调度模型研究

采用系统分析理论 ,研究了梯级泵站供水系统的水资源优化调度问题 ,建立了具有提调水量和泄弃水量两个决策变量及多级泵站、多个水库、多个供水片的多目标水资源优化调度模型 ,给出了自优化模拟调度方法。经实例研究表明 ,模型是可行和实用的     

梯级泵站优化调度软件设计及应户

以分解一协调法为求解计算的理论基础，并利用VB和Fortran语言相结合的方法开发了梯级泵站优化调度可视化软件，软件中主要包括机组装置效率的模拟、单个泵站的运行优化、梯级泵站的运行优化和一些辅助功能，可帮助泵站运行管理人员科学制定泵站运行方式。     

基于密云调蓄工程梯级泵站的抽水装置性能分析

根据模型试验结果,对模型试验数据进行拟合和换算,得到水泵原型装置的性能参数;再考虑水泵运行的传动效率和电机效率,得到原型抽水装置特性曲线;最后经插值计算,得到离散的水泵特性参数。分析泵站在不同机组投入运行条件下的可工作区间,结合工程设计参数,得到在实际调度过程中可能运行的所有工况;将此工况区间进行离散,得出各个工况点下梯级泵站系统的高效运行方案。以密云调蓄工程梯级泵站中屯佃泵站、西台上泵站为例进行了计算,分析对比轴流泵和混流泵在本工程运行中的效率情况,其结果作为泵站优化调度的基础数据,为梯级泵站调水工程的初期安全、高效运行提供技术支撑。     

梯级供水泵站停泵水力过渡过程分

阐述了梯级供水泵站停泵水力过渡过程的特点，结合工程实例，应用特征线法对两级泵站同时事故停泵或其中一级泵站事故停泵时可能出现的断流弥合水锤、下游泵站进水池抽空或漫顶的问题进行了计算分析，并提出了相应的控制措施。     

基于DP-分解协调法的梯级泵站优化调度及控制

为了降低含变频泵的梯级泵站日运行费用、减少优化算法运行时间和便于管理。将含变频泵的梯级泵站优化调度这一复杂得多目标决策问题,拆分为能耗优化和电费降低2个问题,对于能耗优化问题运用分解协调法将梯级泵站模型以扬程为关联量分解为单级泵站子系统模型和单级泵站交互子系统模型,将单级泵站子系统以流量为关联量分解为工频泵和变频泵子系统模型,对各子系统模型采用隐枚举法、动态规划法进行求解。对于电费降低问题,将不进行任何优化、只进行能耗优化和同时进行能耗优化加日流量分配3种情况进行类比,对日流量分配模型也采用动态规划求解。结果表明:动态规划(DP)-分解协调法能够优化含变频泵的梯级泵站,梯级泵站能耗和日运行费用都得到了明显降低;DP-分解协调法与单独采用动态规划法解决含变频泵的梯级泵站优化调度相比,算法运行时间步长得到较大缩减;以DP-分解协调法设计并研发了智能优化调度系统,实现实时控制一体化和便捷管理。     

自动化监控系统在高潭口泵站的运

随着自动化监控系统在泵站运行控制中的逐步运用，采用合适可靠的控制系统在高潭口泵站自动化改造显得十分关键。根据该泵站的实际情况，对如何进行自动化监控的结构设计，系统组成特别是PLC的网络模式的选择、程序的设计和运用进行详细说明。通过这次技术改造，可以提升泵站的技术含量，使泵站运行更加安全、经济、可靠，同时对今后的相关改造工程有一定的参考价值。     

Energy saving with variable speed pumps in on-demand irrigation systems

The present work analyzes energy saving in on-demand irrigation systems served by an upstream pumping station. The objective of this work is to identify the best pumping station operating mode to optimize energy consumption. This objective can be achieved by matching the discharge and the pressure head required by the network (characteristic curve of the network) during the whole irrigation season with the pumping station characteristic curves. The characteristic curve of the network can be obtained using an appropriate stochastic generation modeling, and COPAM software was used in the present work. The characteristic curves of the pumps can be adapted to the network characteristic curve by equipping the pumping station with variable speed devices. Several types of regulation based on variable speed techniques were identified and analyzed. The differences in energy consumption for each technique were quantified for two on-demand irrigation districts in Southern Italy and managed by the Water Users Organization “Consortium of Capitanata”. It was demonstrated that in comparison with the current pumping station regulation, energy savings of about 27 and 35% may be achieved for the two districts.     

基于Qt的智能手机系统架构设计

基于嵌入式Linux操作系统和Qt4.5开发环境设计了一个智能手机的系统架构。文章阐述了系统的整体架构和硬件组成,重点介绍了基于QCOP协议的多线程间通信的实现。     

大型泵站计算机监控系统的开发

结合国内外的情况并根据作者的实际经验，从计算机监控系统的功能、结构等方面对大型泵站计算机监控系统的开发进行了论述。     

机压微灌管网系统布置与管径同步优化设计

微灌管网系统由轮灌管网(支毛管)和续灌管网(干管)组成,以往的研究没有将其作为一个系统,且不能实现布置与管径组合的同步优化,研究成果对坡度均匀的大型灌区机压微灌独立管网系统的优化也不适用。因此,提出了机压微灌管网系统优化的方法,并建立了优化设计数学模型,采取整数及实数编码的混合编码方法,通过遗传算法求解,同时实现轮灌管网及续灌管网的布置优化及管径组合优化,得出的管径为标准商用管径,无需调整。实例计算结果表明,该模型与算法在求解机压微灌管网系统优化设计问题上具有良好的优化性能和求解精度。与传统设计方案相比较,轮灌管网和续灌管网的优化设计方案单位面积年费用分别降低了14. 85%～35. 59%和4. 12%～12. 99%,节省投资效果明显。     

国内大型泵站监控软件的现状与发展

泵站监控软件的开发是实现泵站综合自动化的重要环节。文章分析了非组态化的大型泵站监控软件的应用及其在开发和应用中所面临的问题,论述了国内、外先进组态软件具备的结构和功能以及在泵站中的应用;为增强和完善泵站监控软件的功能,文章进一步探讨了一些先进技术在泵站中的应用,并展望了今后的发展动向,在此基础上提出了国内大型泵站监控软件的开发应该走国产组态的道路。     

基于动态可重构技术的车载网络平台

针对现有车载网络出现故障时难以保障车辆安全运行的问题,提出了一种基于动态可重构技术的车载网络平台。该系统采用多模式归一化设计方案、动态可重构技术和信号编码技术,解决了系统动态重构问题。介绍了系统结构、工作原理和软件开发。通过试验验证了系统的可行性和可靠性。     

Assessment of suspended solids dynamics and their effect in the irrigation networks in the Northern Jordan Valley

This study aims to assess the suspended solids dynamics of the irrigation water, through total Suspended Solids (TSS) measures and field observations. Assessment is conducted along the distribution system in the Northern Jordan Valley. This study followed the water’s TSS conditions in the study area along its travel in King Abdullah Canal (KAC), in the pumping station (with all of its components) and in the delivery networks from the pumping station up to the farm units. TSS of the water in KAC fluctuates temporally and spatially. Pumping stations components performance with respect to TSS such as the bar rack, the static and the traveling screens, the settling basins and the well were evaluated. The design of settling basins showed acceptable specifications of the existing structure; however, management and operation conditions are the main concerns affecting their performance. This study showed the screens work with low efficiency because of operation faults and lack of maintenance especially for the traveling screen. Distribution network affects adversely the water’s TSS because of lack of flushing which enables sediments removal from the network, and prevents suspension process for the piled up sediments inside the network pipes. This study suggested using special points of low elevations in the network to flush piled up sediment out of the network. Finally, this study showed the flushing procedure the Jordan Valley Authority staff should take for cleaning the distribution network.     

Efficiency-driven pumping station regulation in on-demand irrigation systems

The objective of this work was to identify a new efficiency-driven pumping station regulation aiming at maximum energy savings in on-demand irrigation systems. This objective can be achieved by matching the discharge and the pressure head required by the network (characteristic curve of the network) during an entire irrigation season by regulating the operation of the pumping station on the basis of operating the pumps at maximum efficiency. The characteristic curve of the network can be obtained by using an appropriate stochastic generation and hydraulic model. Additional performance analyses were also carried out using the AKLA model in order to better characterize the hydraulic behavior of the irrigation systems under study. The characteristic curves of the centrifugal pumps were adapted to the network curve by equipping the pumping station with variable-speed devices. Several types of regulation based on variable-speed techniques were identified and analyzed. The energy consumption for each regulation technique was quantified for two on-demand irrigation districts in Southern Italy, managed by the Water Users Organization “Consortium of Capitanata”. It was demonstrated that, in comparison with the current pumping station regulation, maximum energy savings may be achieved when pump regulation is carried out with variable-speed devices to maintain the pumps at maximum efficiency.     

自走式沼渣沼液抽排专用车设计与研究

随着我国农村沼气工程建设的快速发展,沼气池进出料环节的装备条件急需升级和改善,该文简要介绍了自走式沼渣沼液抽排设备运转及抽排料特点,阐述了吸排料结构的工作原理,介绍了相应部件的设计方法,并形成了完整的研发方案。