以全寿命周期成本为判据的近海风电场高压海底电缆选型标准  

Selection Criteria of High-voltage Submarine Cables for Offshore Wind Farms by Life Cycle Cost

作　　者：刘刚[1] 曹京荥 陆莹[2] 谭帼馨[3] 

机构地区：[1]华南理工大学电力学院,广州510640 [2]中国能源建设集团广东省电力设计研究院,广州510663 [3]广东工业大学轻工化工学院,广州510006

出　　处：《高电压技术》2015年第8期2674-2680,共7页High Voltage Engineering

基　　金：国家自然科学基金(51477054);国家高技术研究发展计划(863计划)(2015AA050201);广东省科技计划项目(2013B010405002)~~

摘　　要：为了结合海底电缆寿命周期特点、制定适用于近海风电场高压海底电缆的选型标准,以海缆传输容量大于风电场设计向外传输容量为约束条件,构建了包括购置、敷设、损耗、故障损失、运行维护以及回收净投资成本的海缆全寿命周期成本(LCC)模型,并以LCC等额年值最小作为选型标准。以国内某海上风电场海底电缆选型为案例进行计算分析。结果表明,购置、损耗、故障损失成本与自身LCC占比较重,最高分别达到26.4%、30.8%、62.0%;所有方案前期投资与自身LCC占比≤40%。当电压等级相同时,单芯海缆方案损耗成本至少比三芯海缆方案高出4.68×103万元;而当线芯数相同时,高电压等级故障损失成本至少比低电压等级海缆方案高出8.8×103万元;2回110 k V 3×500 mm2高压XLPE绝缘钢丝铠装海缆方案LCC等额年值(3.08×103万元/a)最小,该方案最优。In order to develop a criterion for high-voltage submarine cable selection in offshore wind farms that take the characteristics of submarine cable＇s life-cycle into consideration, we created a life cycle cost（LCC） model of high-voltage submarine cable under the constraint that the capacity of submarine cable transmission is greater than that of designed wind power output. The model includes the costs of input, laying, electricity loss, failure, maintenance, and recycling net investment. Then the selection criterion is to achieve the minimum equivalent uniform annual worth of LCC. Case study of a Chinese offshore wind farm submarine cable selection is proposed. The results show that, the costs of input, electric- ity loss and failure comprise the largest portions of LCC, which are up to 26.4%, 30.8% and 62.0%, respectively, and the maximum front-end investment is less than 40% of the LCC. At the same voltage level, the electricity loss for a single core cable plan is 4.68× 10^7 RMB more than that for a three-core cable plan at least. With the same core number, the cost of failure in a high-voltage submarine cable plan is 8.8× 10^7 RMB more than that of a low-voltage plan at least. The op- timal plan is to have two circuits of 110 kV 3×500 mm^2 high-voltage XLPE insulation steel-wire-armored submarine cable, since its equivalent uniform annual worth of LCC （3.08×10^7 RMB/a） is the smallest.

关 键 词：近海风电场 海底电缆 全寿命周期成本 MARKOV模型 故障损失成本 选型 

分 类 号：TM614[电气工程—电力系统及自动化] P756.1[天文地球—海洋科学]