汤峪水电站突甩负荷过渡过程的数值解

运用外特性数值解法，结合汤峪水电站具体情况，建立了突甩负荷过渡过程求解的数学模型，并编制了计算程序；针对不同导叶关闭规律和不同调压阀行程及其组合情况，进行了多种方案的求解，从而了解了有关水力要素及机组工况参数的瞬变规律，为电站的安全稳定运行提供了依据     

混流式水轮机导叶减压设施改造

介绍了一种中、高水头混流式水轮机导叶减压抗浮的新方法，并在基本论证的基础上，对其推广使用价值，得出了肯定的结论。     

新疆地区陆上风电场风机尾流特征分析

风机的尾流效应会导致风能的转化效率下降,还会增加湍流引起的机械应力损伤,降低风机的稳定性和 服务寿命。为研究新疆地区陆上风电场风机尾流特征, 2015年11月于新疆地区陆上风电场使用脉冲相干多普勒激光雷达进行风场观测。通过分析得到 新疆地区陆上风电场风机尾流特征,主要包括风速损失率、尾流宽度、尾流长度及其平均结果, 最大风速损失率,尾流长度随时间的变化趋势、与风速之间的关系等,发现风速损失率、 尾流宽度、尾流长度与背景风速、湍流强度有关。     

Insights in wind turbine drive train dynamics gathered by validating advanced models on a newly developed 13.2 MW dynamically controlled test-rig

Guaranteeing reliable and cost-effective wind turbine drive trains requires expert insights in dynamics during operation. A combination of advanced modeling techniques and detailed measurements are suggested to realize this goal. The flexible multibody modeling technique enables the simulation of dynamic loads on all drive train components. Moreover it facilitates estimation of structural component deformation caused by dynamic loading. This paper gives a detailed overview of the assumptions made in this modeling approach. Furthermore the influence of the different structural component flexibilities is investigated in detail. To gain confidence in the models created, model validation by means of a comparison with measurements is necessary. To overcome issues concerning test repeatability experienced in field testing, test-rig testing is suggested as a valid alternative. In order to be representative, dedicated dynamic load cases, which represent specific dynamic behavior of the gearbox in a wind turbine need to be realized on the test-rig. However a highly dynamic test-rig complying with the specifications was not commercially available. Therefore Hansen developed a high dynamic test-rig with a nominal power of 13.2 MW and a peak power capacity of 16.8 MW. A back-to-back gearbox configuration was used. The complexity of controlling dynamics of the test-rig was solved by identifying dedicated load cases which represent specific wind turbine behavior. This paper describes the development process of the project consisting of four phases. During two phases a scaled set-up was used, which enabled iterative optimization of the complex interaction between the mechanical dynamics and the electrical controller of the test-rig. In the final part of the paper the two previously discussed approaches are combined, as it discusses results from the validation of simulation models using measurements performed on the 13.2 MW test-rig.     

鱼雷燃气涡轮机废气喷水冷却计算与分析

使用燃气涡轮机可使鱼雷航速大幅度提高,但由于涡轮机后废气温度较高,对密封、轴承、润滑系统及航迹产生不利影响,必须采取措施对废气进行冷却.本文详述了涡轮机废气喷水冷却的原理,并基于工程热力学及流体力学基本理论,建立了废气喷水冷却计算模型,对不同工况下涡轮机废气冷却进行了计算,得到了满足要求的最优喷水量和冷却后废气热力参数.计算结果为燃气涡轮机动力装置冷却系统设计提供了理论支撑.     

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国外输气干线的增压,都以燃气轮机作压缩机的动力。我国自50年代起生产了一批样机,主要用于发电。本文提出,在国内即将引进生产新型燃气轮机时,应考虑解决适用于干线增压的技术配套等问题。     

10MW级高压变频器在合成氨装置主机系统中的应用分析

本文通过对现有40万t合成氨装置主压缩杌组驱动系统分析,指出了其中存在的问题。针对性提出采用电气驱动替代“锅炉＋汽轮机”驱动的新思路：通过对两种驱动形式的经济性比较,技术可行性分析,阐述了该新型驱动形式的可行性和良好应用前景。     

Performance analysis of individual blade pitch control of offshore wind turbines on two floating platforms

Individual blade pitch state space (IBP SS) control and disturbance accommodating control (DAC) that reject wind speed perturbations are applied on a 5 MW wind turbine mounted on the barge and tension leg floating platforms for performance comparison in above rated wind speed region. The DAC used in this study is simply an IBP SS controller with a wind speed disturbance rejection component. For each controller implemented onshore and on the floating platforms, 60 10-min simulations with a variety of wind and wave conditions, where applicable, are carried out in accordance with the IEC-61400-3 standard design load case 1.2 for fatigue load testing. Results show that even with large tower load reductions by the IBP SS controller on the barge platform, these loads are still at least two and up to five times more than that for an onshore wind turbine. DAC on the barge platform has little impact on further improving the performance of the IBP SS controller. DAC on the tension leg platform manages to achieve loads comparable to that of the onshore system. Power and rotor speed regulation are improved and tower side-side load is reduced. Only the tower fore-aft load is 24% higher than the onshore wind turbine.     

现代城市道路综合发电系统

基于经济的高速发展,城市因交通而产生诸多污染与能源的浪费,我们设计了现代城市道路综合发电系统,目的是解决一些污染问题,并合理利用废弃能源,服务城市。这里我们以武汉为例来介绍,其他城市可以以此来作为借鉴。我们的装置主要表现在三个方面：利用风力发电;利用嗓音发电;利用温差发电。本文针对以上三个方面进行阐述。     

一种舰用燃气轮机数字控制系统

为给舰用发动机提供先进和可靠的动力装置控制系统,针对国内某型舰用燃气轮机实施了控制系统的数字化改造.新研制的数字控制系统由电子控制器、适合数字式控制的燃油供油装置、燃油计量装置和原有燃油泵组成.该系统通过了半物理仿真试验,试验结果证明,与原机械液压控制系统相比,该系统具有控制精度高、便于调节控制规律、安全可靠等优点.