【作者】 田野；

【导师】 夏世威； 李响；

【作者基本信息】 华北电力大学(北京) ， 工程硕士（专业学位）， 2023， 硕士

【摘要】 海岛开发在促进经济发展、增强国家海洋实力和国际影响力等方面有着重要意义。然而远洋海岛因其特殊的地理环境,存在物资能量紧缺的现实问题,日趋严重的电能短缺问题已成为制约远洋海岛发展的瓶颈。当前海岛供电一般以柴油发电机为主,不仅环境污染严重,而且与当前低碳发展理念背道而驰。实际上,绝大多数远洋海岛蕴藏着丰富的可再生能源,若能对其进行合理开发,将极大缓解柴油发电带来的高污染、高排放、高成本问题。本文着眼于远洋海岛群用能需求,引入区分岛屿类型、多岛联合的创新发展模式,为远洋海岛群提供能量支撑。首先,分析了远洋海岛群的分布特点以及可再生能源资源的分布情况。其次,分析了岛群的交通运输需求,包括载客需求和电池组运输需求,由于载客船舶拥有大量空闲时段,为此引入共享换电船舶(shared power exchanging vessel,SPEV)参与的海岛群电能调度方法,该方法充分利用载客船舶的运输潜力,无需为移动电池组配置专门运输工具。然后,根据资源岛的新能源分布情况,建立了包括风、光和海流能的出力模型。最后,建立了共享换电船舶和移动电池组的时空分布模型,用来确定船舶和电池组的所处位置和状态。基于SPEV共享概念分析了不同类型岛屿间的电能互联模式。建立考虑SPEV共享的船舶航行时空耦合关系和移动储能电池组充放电模型、以及SPEV载客出行模型。在此基础上,以海岛群日前综合运行成本最小为目标,考虑电池组充放电约束、SPEV航行路径约束、载客出行等约束,建立SPEV参与的海岛群电能调度方法,在满足旅客出行需求前提下充分发挥了 SPEV对电能的时空转移灵活性。最后以南海太平岛岛群为例进行仿真分析,结果表明本文所提基于SPEV的海岛群电能调度策略可提高海岛群新能源消纳率及海岛群供能系统运行的经济性。基于SPEV实现海岛群电能调度模式,提出一种考虑微电网运行安全约束的电能调度策略。其中包括微电网节点电压、线路容量等约束。在此基础上,建立了柴机精细化出力模型,同时将线路损耗和机组启停成本加进目标函数,提出了满足微电网运行安全约束的海岛群用能调度新模型。通过合理调度共享换电船舶出行和岛上电源出力计划,以实现柴机的高效化运行、减少线路损耗、提高运行经济性的目的。最后通过对比算例验证了本文所提模型能有效减小线路损耗,提高柴机运行效率,保证微电网安全稳定运行。更多还原

【Abstract】 The development of islands is of great significance in promoting economic growth.enhancing the country’s maritime strength,and increasing international influence.However,due to the special geographical environment of pelagic ocean islands.there is a serious shortage of material and energy resources,and the increasingly severe shortage of electricity has become a bottleneck for their development.Currently,most island power supplies rely on diesel generators,which not only cause serious environmental pollution but also contradict the current low-carbon development concept.In fact,the vast majority of remote ocean islands have rich renewable energy resources,and if they can be reasonably developed,they will greatly alleviate the problems of high pollution,high emissions,and high costs caused by diesel generator electricity.This paper focuses on the energy demand of pelagic clustering islands and introduces an innovative development model that distinguishes between island types and multi-island alliances to provide energy support for pelagic clustering islands.Firstly,the distribution characteristics of pelagic clustering islands and the distribution of renewable energy resources were analyzed.Secondly,the transportation demand of the island groups was analyzed,including passenger demand and battery pack transport demand.To make use of the idle time of passenger ships,a shared power exchanging vessel(SPEV)was introduced to participate in the energy dispatching method of the island groups.This method fully utilizes the transportation potential of passenger ships without the need for dedicated transportation tools for mobile battery packs.Then,based on the distribution of new energy resources in resource islands,an output model including wind,solar,and ocean current energy was established.Finally,a spatiotemporal distribution model of shared power exchanging vessels and mobile battery packs was established to determine the location and status of ships and battery packs.Based on the shared power exchanging vessel(SPEV)concept,energy interconnection modes between different types of islands were analyzed.A spatiotemporal coupling model of ship navigation considering SPEV sharing,a mobile energy storage battery pack charging and discharging model,and a SPEV passenger travel model were established,Based on these models and aiming to minimize the comprehensive operating costs of the clustering islands,the SPEV participation energy dispatching method for the island groups was established,taking into account constraints such as battery pack charging and discharging.SPEV navigation path,and passenger travel.This method fully utilizes the spatiotemporal transfer flexibility of energy by SPEV while meeting the needs of passenger travel.Finally,taking the Nansha Islands as an example for simulation analysis,the results show that the SPEV-based energy dispatching strategy for the island groups proposed in this paper can improve the consumption rate of new energy sources in the island groups and the economy of the island groups’ energy supply sy stem.Aiming at the energy scheduling of island clusters based on the SPEV system,a novel energy scheduling strategy considering the operational safety constraints of microgrids is proposed in this study.The constraints include the voltage of microgrid nodes,the capacity of transmission lines,etc.Furthermore,a refined output model of diesel generators is developed,and the cost of power transmission lines and the start-stop cost of generators are introduced into the objective function.The proposed energy scheduling model aims to satisfy the operational safety constraints of microgrids and achieve efficient operation of diesel generators,reduced transmission line losses,and improved operational economics by reasonably scheduling the power output plan of the island power supply and the SPEVs route.Finally.a case study is conducted to demonstrate that the proposed model can effectively reduce transmission line losses,enhance the efficiency of diesel generators,and ensure the safe and stable operation of microgrids.更多还原