Wind Farm Location Special Optimization Based on Grid GIS and Choquet Fuzzy Integral Method in Dalian City, China

Selecting an appropriate wind farm location must be specific to a particular administrative region, which involves restrictions balance and trade-offs. Multi-criteria decision making (MCDM) and GIS are widely used in wind energy planning, but have failed to achieve the selection of an optimal location and make it difficult to establish a set of independent factors. Fuzzy measurement is an effective method to evaluate intermediate synthesis and calculates the factor weight through fuzzy integrals. In this paper, optimal wind farm location is analyzed through coupling Grid GIS technique with λ fuzzy measure. Dalian City is selected as the study area for proving the feasibility of the proposed method. Typography, meteorological, transmission facilities, biological passage, and infrastructure are taken into the index system. All the indexes are specialized into victor grid cells which are taken as the base wind farm location alternative unit. The results indicate that the Grid GIS based λ fuzzy measure and Choquet fuzzy integral method could effectively deal with the special optimization problem and reflect optimal wind farm locations.

Research on Application System of Three-Dimensional Design of Transmission Line Based on Grid GIS Cloud Platform

Intelligent integration has been basically achieved in transmission line design in developed countries, while the current management design level in this field in China is backward and inefficient. According to the characteristics of the pilot transmission line project, it is necessary to build a transmission line 3D design application system based on the grid GIS cloud platform with the advantages of webgl cross platform and without installing plug-ins, to assist in the application of transmission line 3D design, and to develop the interface with professional line 3D design software, so as to realize the smooth operation of GIS elevation and image information and other information such as line selection and capital collection. Experiments prove that the construction of transmission line three-dimensional design application system based on grid GIS cloud platform provides a set of simple, fast, convenient and intelligent and efficient three-dimensional design support for planners and designers. It is an effective means for modern power enterprises to improve management design level and work efficiency, and has great significance in economic and social benefits.

A spatially allocated emissions inventory for Cyprus

In this paper, a detailed spatial allocated emissions inventory for Cyprus is presented. Topdown and bottom-up methodologies are implemented and emissions are estimated from all anthropogenic sources for the reference year 2002 with the aid of state-of-the-art algorithms. Emission factors representative for the situation in Cyprus, in the case of major industrial units, and default emission factors for the rest emission sources are adopted. Main results indicate that power generation and road transport are the major contributors to total emissions. Power generation share was 36% in total CO2, 62% in total SΟ2, 20% in total NOx and 55% in total Ν2Ο emissions, while the share of road transport was 29% in CO2, 22% in SΟ2, 35% in NOx and 6% in Ν2Ο emissions. Furthermore, comparisons to other existing emission inventories for Cyprus and official national emission data are presented and differences are partially explained. A GIS-based approach is applied to generate, organize and spatially allocate emissions data in a 5x5 km² grid. GIS-aided spatial overlay techniques are used and maps of spatial allocation factors and gridded emissions data are produced and presented, showing that highest emission densities appear in cells, which include large industrial plants and/or cover urban areas.