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首页> 外文会议>CIGRE Dublin Symposium >Protecting Submarine Electricity Cables and the Impact on the Island Communities of Scotland and the Surrounding Environment
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Protecting Submarine Electricity Cables and the Impact on the Island Communities of Scotland and the Surrounding Environment

机译：保护潜艇电缆和对苏格兰岛屿社区的影响及周边环境

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Scottish and Southern Electricity Networks (SSEN) owns, operates and maintains a unique and diverse network across the north of Scotland which connects 59 Scottish islands to the distribution network through 111 submarine cables. At present, 109 of these cables are laid directly on the seabed. Submarine Electricity Cables account for 1% of SSEN's Scottish network by length (454 km). Marine Scotland, SSEN's environmental regulator, published Scotland's National Marine Plan. Adopted in March 2015, the plan sets out a framework to manage the competing economic, environmental and social demands placed on Scotland's natural marine environment. It includes new policies on how submarine electricity cables are laid and protected on the seabed to achieve co-existence of all marine users. These policy changes could substantially increase the cost of laying and maintaining submarine electricity cables by up to ￡300 million (from ￡44 million) over the next 8 years. From the perspective of SSEN's Scottish consumer base, they could have a 23% increase in the distribution element of their electricity bills in 2017/18, and a 10% increase annually until the end of RIIO-ED1. SSEN is also subject to financial regulation from the Office of Gas and Electricity Regulation (Ofgem). Ofgem accepted SSEN's final business plan of the period April 2015 to March 2023 and determined the amount of revenue that SSEN can receive, from consumers through their bills, in order to maintain the network in November 2014. At this point SSEN's allowances for maintaining the network were set based on the assumption of surface laid submarine cables. With the introduction of Scotland's National Marine Plan imminent, provisions were made for SSEN to recover additional costs associated with the protection of submarine electricity cables, where the identified benefits (to the cable, a wide range of stakeholders and electricity consumers) justify the additional expenditure and provide best value. Stakeholder views were used to inform the development of a Cost Benefit Analysis (CBA) tool which is being used to demonstrate to Ofgem, Marine Scotland and users of the marine environment as to whether or not the additional cost of protecting or burying submarine electricity cables represents best value to SSEN electricity consumers and wider stakeholders. AECOM were engaged to develop the CBA tool to assess the holistic impacts of cable protection in monetary terms. The tool includes the engineering costs of installation, repair, decommissioning and maintenance, as well as the effect on fault rate. The tool also considers a range of non-engineering impacts, including the health and safety of marine users involved in installing cables, the socio-economic impact on citizens, such as fuel poverty caused by increased electricity distribution costs, commercial fishing and future renewable generation and environmental issues relating to greenhouse gas emissions. The tool calculates the net present value for all impacts considered and compares the overall impact of choosing different cable protection strategies. The tool facilitates the assessment of a range of cable protection options, identified through consultation such as ploughing, concrete mattressing, rock placement and horizontal directional drilling. The range of impacts included in the tool were developed with extensive stakeholder engagement, including Marine Scotland and Ofgem, and discussions with industry experts: demonstrating SSEN's commitment to community-based participation. On a case-by-case basis, the tool will help with the selection of the best value protection method for individual cables and will be included as supporting evidence within the Marine License documentation submitted to Marine Scotland. The tool will also be used to determine whether the identified benefits (to the cable, a wide range of stakeholders and electricity consumers) can support any additional expenditure and provide best value for electric
机译：苏格兰和南部供电网络（SSEN）拥有，运营和维护整个苏格兰它通过111条海底电缆连接59个苏格兰岛屿的销售网络北部独特和多样化的网络。目前，这些电缆109在海底直接铺设。海底电力电缆由长度（455公里）占SSEN的苏格兰网络的1％。海洋苏格兰，SSEN的环境监管，发布苏格兰的国家海洋规划。在2015年3月通过，该计划提出了一个框架来管理放在苏格兰的海洋自然环境的竞争经济，环境和社会的需求。它包括海底电力电缆如何布局和保护在海底实现所有海洋用户共存的新政策。这些政策变化可能会大幅增加在未来8年内铺设和高达£3亿维持海底电力电缆（从£4400万）的成本。从SSEN的苏格兰消费群的角度来看，他们可以在他们的电费的分配元件增加十八分之二千零十七23％和10％的增长，每年直到RIIO-ED1结束。 SSEN也受到来自天然气和电力监管办公室（天然气电力市场办公室）金融监管。天然气电力市场办公室接受了一段2015年4月的SSEN的最终商业计划2023年三月和确定的收入是SSEN可以接收来自消费者通过他们的账单，以维持在2014年11月，网络在这一点上SSEN的津贴维持网络的金额基于表面铺设海底电缆的假设设定。随着引进苏格兰国家海洋计划迫在眉睫，规定对于SSEN作出恢复与保护海底电力电缆，其中标识的好处（对电缆，广泛的利益相关者和电力用户的）证明的额外支出的额外费用并提供最佳的价值。利益相关者的意见被用来告知成本效益分析（CBA）工具，它被用来展示给天然气电力市场办公室，海洋苏格兰和海洋环境的用户是否或没有保护或埋海底电力电缆代表的额外成本的发展最有价值的SSEN电力消费者和更广泛的利益相关者。 AECOM从事开发CBA工具来评估以货币形式电缆保护的整体影响。该工具包括的安装，维修，退役和维修工程费用，以及对故障率的影响。该工具还考虑了一系列非工程影响，包括健康和参与安装电缆海洋用户的安全性，对公民，如引起配电成本增加，商业捕鱼和未来的可再生能源发电的燃料贫困的社会经济影响与环境问题有关的温室气体排放。该工具可以计算考虑所有影响的净现值和比较选择不同的电缆保护战略的整体影响。该工具有利于一系列的电缆保护选项，通过协商确定如犁地，混凝土mattressing，岩石安置和水平定向钻探的评估。包含在工具影响的范围内进行了广泛利益相关者参与开发，包括海洋苏格兰和天然气电力市场办公室，并与业内专家的讨论：展示SSEN的基于社区参与的承诺。对案件逐案的基础上，该工具将帮助个别电缆的最佳值保护方法的选择和将作为提交给海洋苏格兰海洋许可文档中的支持证据。该工具也将用于确定所识别的好处（到电缆，一个宽范围的利益相关者和电力用户）是否可以支持任何额外开支，并提供最好的电值

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