考虑储电船舶参与的近海海岛灵活供能网络规划

doi:10.11930/j.issn.1004-9649.202204052

摘要/Abstract

摘要： 能源供给是近海海岛开发的先决条件，纯粹的独立微网供能方式往往面临着一定的可靠性问题，而海底电缆高昂的建设及维护成本，较大程度上限制了近海海岛的开发和利用。为此，提出一种考虑储电船舶（electric vessel，EV）参与的近海海岛灵活供能网络规划策略。首先，针对典型近海人居岛和资源岛相对位置及其可再生能源出力特点，提出包含EV能量链路、沟通人居岛、资源岛和大电网并网点的灵活供能网络架构，以充分利用无人岛上的可再生资源以及大电网的稳定支撑能力；进而，量化分析不同场景对EV交通转移的时延特性影响，搭建EV时空转移模型；以规划期内的海岛电网收益最大为目标函数，建立连续-离散能量流混合网络规划模型。此外，提出了一种两阶段求解算法，第一阶段预估EV数量，第二阶段确定规划模型的最优解。仿真结果表明：所提规划方案具有优越性，为海岛负荷供电及可再生能源开发利用提供了一种新的思路。

关键词: 储电船舶, 近海海岛, 灵活供能网络, 电网规划, 两阶段求解算法

Abstract: Energy supply is a prerequisite for offshore island development. Purely independent micro-grid energy supply methods often face certain reliability problems, and the high construction and maintenance costs of submarine cables limit the development and utilization of offshore islands to a large extent. Therefore, this paper proposes a flexible energy supply network planning strategy for offshore islands considering the participation of electric vessels (EVs). Firstly, for the relative locations of typical offshore inhabited islands and resource islands as well as their renewable-energy output characteristics, a flexible energy supply network architecture is proposed, which includes EV energy links to connect inhabited islands, resource islands, and grid parallel points, so as to make full use of the renewable resources on uninhabited islands and the stable support capacity of the large grid. On this basis, a network planning model for hybrid continuous-intermittent energy flow is developed with the objective function of maximizing the grid revenue of the islands during the planning period. In addition, a two-stage solution algorithm is put forward, where the first stage estimates the number of EVs, and the second stage determines the optimal solution to the planning model. The simulations demonstrate the superiority of the proposed planning scheme. This paper provides a new way of thinking for the power supply to offshore island loads and the exploitation of renewable energy.

Key words: electric vessel, offshore islands, flexible energy supply network, network planning, two-stage solution algorithm

李飞宇, 随权, 林湘宁, 李正天, 魏繁荣. 考虑储电船舶参与的近海海岛灵活供能网络规划[J]. 中国电力, 2022, 55(11): 10-20.

LI Feiyu, SUI Quan, LIN Xiangning, LI Zhengtian, WEI Fanrong. Flexible Energy Supply Network Planning for Offshore Islands Considering Participation of Electric Vessels[J]. Electric Power, 2022, 55(11): 10-20.

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链接本文: https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.202204052

https://www.electricpower.com.cn/CN/Y2022/V55/I11/10

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