Benefits Of Wind Farms Research Articles

Economic assessment of a renewable energy-electricity-hydrogen system considering environmental benefits

Improving the penetration of renewable energy in the power system is a development trend. However, renewable energy cannot be fully utilized due to its uncertainty, and the further research of renewable energy application integrated with hydrogen storage is necessary. This paper proposes a renewable energy-electricity-hydrogen system that aims to make the most use of renewable energy and achieve carbon emission reduction. From the perspective of the whole life cycle, the economic benefits and environmental benefits evaluation model of this system is built considering environmental benefits quantification. A wind farm project in China is analyzed to study the feasibility of proposed system. The results show that the optimal power of the hydrogen production system when considering the economic and environmental benefits comprehensively (19.8 MW) is larger than that when only considering the economic benefits (17.5 MW). The benefits of wind farm are increased in both cases, but with the emphasis on environmental benefits, the wind curtailment rate of the wind farm is lower (1.12 %) and the carbon emission reduction is over 27,500 tons a year. The total benefits considering the environmental benefits quantification reach to 66.95 million US$. Moreover, sensitivity analysis shows that carbon trading price and hydrogen selling price are the key factors to the benefits of the project. This study not only verifies that hydrogen production by renewable energy curtailment is economically feasible and has significant environmental benefits, but also could provide a guiding for relevant decision-makers.

Community Participation for the Use of Renewable Energies in Ciudad Ixtepec, Oaxaca (2008–2015)

This paper aims to examine the redefinition of rural actors and practices in the context of the Wind Farm Corridor of the Isthmus of Tehuantepec. That redefinition addresses issues such as the benefits of wind farms, the role of the land in the use of wind energy, requirements for the use of wind, arguments of disagreement with wind farms, manifestations of that disagreement, and the feasibility of community wind farms. Adopting a case study methodology from a qualitative perspective, and “worded” data collected through semi-structured interviews, it was detected that, despite the disapproval of residents of the Oaxacan Isthmus due to a dispossession claimed to the Federal Electricity Commission (Comisión Federal de Electricidad, CFE) and private companies, many of the landowners in Ciudad Ixtepec have decided to become wind entrepreneurs by a community wind farm, facing opposition and mistrust regarding their capacities.

An accurate detection method for turbine icing issues using LSTM network

As one of the most widely applied clean energy resources, wind power generation is helpful for energy structure adjustment and sustainable development, whereas blade-icing failure affects the stability and benefits of wind farm. In consideration of efficiency improvement and safety hazard control, this paper proposed a failure detection model based on long short-term memory network. With the combination of turbine operation mechanism and data-driven method, the early warning of blade icing was implemented, which made it possible to take timely measures such as turning on the de-icing system at early moments of icing issues. The operational data collected by SCADA system were used as input for model, and progressive trend as well as hidden messages were learned from historical correlation at both temporal and characteristic scales. Consequently, the model achieved the fault detection and performed well on test dataset.

Research on Adaptive Current Protection of Wind Farm

In allusion to the problems of convention current protection when it was used to collect circuit of wind farm, the relay protection should consider the short-circuit current of wind generators; The principle of adaptive current protection was described, the fault current and attenuation characteristic of asynchronous wind generator was studied, the scheme of adaptive current protection was proposed for wind farm operation. Taking PSCAD/EMTDC as the platform, simulation and record the voltage and current sample-data of different wind farm operation which can guarantee high sensitivity phase selection, the high accuracy wind generators impedance measure method based on FFT filter DC component is presented , and using MATLAB program achieved the scheme of adaptive current protection. Simulation results demonstrate that collect circuit adaptive current protection is adaptive wind farm operation model, and enhance the operation benefit of wind farm.

Projected Future Wind Speed and Wind Power Density Trends over the Western US High Plains

This manuscript presents the results of research on future changes in wind speed and wind power density across the western US High Plains in an area known for its high wind energy resources. Many current policies and economic analyses involving the rapidly expanding wind energy industry have assumed a constant or near constant wind resource. However, any future change in wind speeds will result in changes in the reliability of wind power as an energy resource. This paper uses current data (1970-2000) and future model output (2040-2070) to analyze decadal and seasonal changes in wind speed across the study area. In addition, estimated hub height wind power densities have been analyzed. Results show projections of a slight overall decreasing wind power in the future across the region. The greatest magnitude changes are estimated to be in the seasonal trends with the most substantial decreases occurring in winter and spring. As climate changes and warms overall, there will be shifts in the temperature gradients and the synoptic storm tracks that drive wind speeds. Thus, it is theorized that the wind speeds will be the result of an earlier transition to, and longer duration of, a calmer summertime pattern. This longer duration of a summertime pattern will lead to the decreased wind speeds and lower wind power output identified in this research. This decrease needs to be factored in for any estimates of the long-term costs and benefits of wind farms in the area.