风能短缺条件下多机组风力发电厂运行的理论分析

IF 1.204 Q3 Energy
S. S. Dorzhiev, E. G. Bazarova, M. I. Rosenblum
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引用次数: 0

摘要

摘要 可以利用低电位风能实现风力发电厂的高效运行,并提高年发电量,以保证向风力不足的偏远农村地区的设施供电。目前,世界各地在开发大型风力发电厂时都采用水力输电,以提高可靠性和降低成本。然而,这种系统的效率低于机械传动(齿轮箱)系统的效率。但在风力不足的地区,使用齿轮箱的风力发电厂效果不佳,而液压传动可以提高小型风力发电厂的年发电量。建议采用液压传动和蓄能器的小型多单元风力发电站,为农村地区的偏远设施供电。已开发出计算多单元风力发电站参数和运行模式的方法。在风速为 4-14 米/秒的范围内,对多单元风力发电站的运行进行了研究。多机组风力发电站运行的理论分析结果以扭矩、转速、功率和流量图的形式呈现。结果表明,液压系统中几个泵的流量之和可以在很宽的风速范围内为液压马达提供所需的恒定流量。因此,对于一个平均周期风速为 4.3 米/秒的地区来说,即使在 3-4 米/秒的低风速下,每天的总流量短缺为 75.2 升/分钟,而每天的总流量过剩为 180 升/分钟。通过上述计算方法,可以对参数进行比较分析,并为正在开发的多机组风力发电站选择设计方案。在风能潜力较低的地区,使用带有液压蓄能器的液压系统和多个并联的不同参数的风力接收装置,可显著提高小型风力发电站的效率。在这种情况下,风力发电站发电机的效率将始终达到最高,因为发电机轴的转速保持恒定,并提供了最佳的发电机模式。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Theoretical Analysis of the Operation of a Multi-Unit Wind Power Plant in Conditions of a Shortage of Wind Power

Theoretical Analysis of the Operation of a Multi-Unit Wind Power Plant in Conditions of a Shortage of Wind Power

Theoretical Analysis of the Operation of a Multi-Unit Wind Power Plant in Conditions of a Shortage of Wind Power

It is possible to use low-potential wind energy for the efficient operation of a wind power plant and for increasing the Annual Energy Production for guaranteed power supply to facilities in remote rural areas with a shortage of wind power. Currently in the development of large wind power plants worldwide hydraulic transmission is used to increase reliability and reduce the cost. However, the efficiency of such systems is lower than the efficiency of systems with a mechanical transmission (gearbox). But in regions with a shortage of wind power, wind power plants with a gearbox are not effective, and a hydraulic transmission could provide an increase in the Annual Energy Production of small wind power plants. Proposed is a small multi-unit wind-driven power plant with a hydraulic drive and an accumulator for power supply to remote facilities in rural areas. Methods for calculating the parameters and modes of operation of a multi-unit wind-driven power plant have been developed. The operation of a multi-unit wind-driven power plant was studied in the range of wind speeds of 4–14 m/s. The results of the theoretical analysis of the operation of the multi-unit wind-driven power plant are presented in the form of torque, rotational speed, power and flow rate diagrams. The results showed that the sum of flow rates of several pumps in the hydraulic system can provide the required constant flow rate of the hydraulic motor in a wide range of wind speeds. Thus, even at low wind speeds of 3–4 m/s on a typical day for a region with an average periodic wind speed of 4.3 m/s the total daily flow shortage is 75.2 L/min, while the total daily surplus is 180 L/min. The above calculation methods allow for a comparative analysis of the parameters, as well as the selection of design for the multi-unit wind-driven power plant being developed. The use of a hydraulic system with a hydraulic accumulator and several wind-receiving devices of different parameters, connected in parallel, significantly increases the efficiency of a small wind-driven power plant in a region with low-potential wind energy. In this case, the efficiency of the electric generator of a wind-driven power plant will always be maximum, since a constant rotational speed of the generator shaft is maintained and optimal generator modes are provided.

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来源期刊
Applied Solar Energy
Applied Solar Energy Energy-Renewable Energy, Sustainability and the Environment
CiteScore
2.50
自引率
0.00%
发文量
0
期刊介绍: Applied Solar Energy  is an international peer reviewed journal covers various topics of research and development studies on solar energy conversion and use: photovoltaics, thermophotovoltaics, water heaters, passive solar heating systems, drying of agricultural production, water desalination, solar radiation condensers, operation of Big Solar Oven, combined use of solar energy and traditional energy sources, new semiconductors for solar cells and thermophotovoltaic system photocells, engines for autonomous solar stations.
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