Routeing of power lines through least-cost path analysis and multicriteria evaluation to minimise environmental impacts
Routeing of power lines through least-cost path analysis and multicriteria evaluation to minimise environmental impacts
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DOI：
10.1016/j.eiar.2010.10.003
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发表时间：
2011-04-01
影响因子：
7.9
通讯作者：
Orsi, Francesco
中科院分区：
文献类型：
--
作者：
Bagli, Stefano;Geneletti, Davide;Orsi, Francesco
最小成本路径分析（LCPA）允许设计人员找到“最便宜”的方式来连接成本曲面内的两个位置，这可以通过结合多个标准来计算，因此可以考虑不同的问题（环境影响，经济投资等）。这个过程可以很容易地实现与现代地理信息系统（GIS）技术，因此，它已被广泛用于支持规划和设计的不同类型的线性基础设施，从道路到管道。本文提出了一种方法的基础上集成的多准则评估（MCE）和LCPA，以确定最合适的路线为132 kV的电力线路。标准，如成本，能见度，人口密度和生态系统的自然性进行了分析。首先，空间MCE和LCPA相结合，以生成成本表面，并确定替代路径。随后，MCE被用来比较替代品，并根据其整体适用性进行排名。最后，通过敏感性分析，可以检验结果的稳定性，并检测评价的最关键因素。研究发现，电力线起点和终点位置的微小变化可能导致路径明显不同，从而影响水平。这表明，规划者应始终考虑替代的终端的潜在位置，以确定最佳path.Further，它表明，使用不同的权重方案可能有助于使模型适应不同的环境和社会背景。在意大利东北部的一个真实案例研究中对这种方法进行了测试。(C)2010年爱思唯尔公司All rights reserved.
Least-cost path analysis (LCPA) allows designers to find the "cheapest" way to connect two locations within a cost surface, which can be computed by combining multiple criteria, and therefore by accounting for different issues (environmental impact, economic investment, etc.). This procedure can be easily implemented with modern Geographic Information System (GIS) technologies, and consequently it has been widely employed to support planning and design of different types of linear infrastructures, ranging from roads to pipelines. This paper presents an approach based on the integration of multicriteria evaluation (MCE) and LCPA to identify the most suitable route for a 132 kV power line. Criteria such as cost, visibility, population density, and ecosystem naturalness were used for the analysis. Firstly, spatial MCE and LCPA were combined to generate cost surfaces, and to identify alternative paths. Subsequently, MCE was used to compare the alternatives, and rank them according to their overall suitability. Finally, a sensitivity analysis allowed the stability of the results to be tested and the most critical factors of the evaluation to be detected. The study found that small changes in the location of the power line start and end points can result in significantly different paths, and consequently impact levels. This suggested that planners should always consider alternative potential locations of terminals in order to identify the best path. Furthermore, it was shown that the use of different weight scenarios may help making the model adaptable to varying environmental and social contexts. The approach was tested on a real-world case study in north-eastern Italy. (C) 2010 Elsevier Inc. All rights reserved.