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遠(yuǎn)海岸海上風(fēng)電輸電方式技術(shù)經(jīng)濟(jì)分析

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遠(yuǎn)海岸海上風(fēng)電輸電方式技術(shù)經(jīng)濟(jì)分析

吳倩1,薄鑫1,吳楊勇2,鄭宇超1
(1 國(guó)網(wǎng)江蘇省電力有限公司經(jīng)濟(jì)技術(shù)研究院,江蘇 南京 210008;
2 國(guó)網(wǎng)安徽省電力有限公司祁門縣供電公司,安徽 祁門 245600)
 
    摘 要:全球海上風(fēng)電呈現(xiàn)遠(yuǎn)?;?、規(guī)模化、集群化趨勢(shì),遠(yuǎn)海風(fēng)電輸電方式選擇至關(guān)重要??紤]海上風(fēng)電場(chǎng)規(guī)模、離岸距離等因素,采用等年值法,結(jié)合 14 種遠(yuǎn)海風(fēng)電典型場(chǎng)景,從技術(shù)性、經(jīng)濟(jì)性兩個(gè)維度,對(duì)高壓工頻交流、柔性直流、低頻交流等 3 種海上風(fēng)電輸電方式進(jìn)行對(duì)比分析。研究表明,工頻交流輸電技術(shù)在中小容量、中遠(yuǎn)距離海上風(fēng)電送出應(yīng)用場(chǎng)景具有技術(shù)、經(jīng)濟(jì)優(yōu)勢(shì),柔性直流輸電技術(shù)應(yīng)用于大容量、遠(yuǎn)距離海上風(fēng)電送出場(chǎng)景時(shí)經(jīng)濟(jì)優(yōu)勢(shì)凸顯。同時(shí),對(duì) 35、66 kV 交流匯集-柔直送出兩種方案進(jìn)行比較,指出 66 kV 匯集無(wú)海上升壓站- 柔直方案更具經(jīng)濟(jì)性,進(jìn)一步縮短了交直流輸電方式等價(jià)離,并給出典型場(chǎng)景海上風(fēng)電輸電方式選擇建議,提出了遠(yuǎn)海岸海上風(fēng)電送出方式選擇指導(dǎo)意見(jiàn)。
    關(guān)鍵詞: 遠(yuǎn)海岸;海上風(fēng)電;高壓工頻交流;柔性直流;低頻交流;輸電方式;技術(shù)經(jīng)濟(jì)分析
    中圖分類號(hào):TM614 ;TM722     文獻(xiàn)標(biāo)識(shí)碼:A     文章編號(hào):1007-3175(2024)01-0001-09
 
Techno-Economic Analysis of Far Coast Offshore
Wind Power Transmission Modes
 
WU Qian1, BO Xin1, WU Yang-yong2, ZHENG Yu-chao1
(1 State Grid Jiangsu Electric Power Co., Ltd. Economic Research Institute, Nanjing 210008, China;
2 State Grid Anhui Electric Power Co., Ltd. Qimen County Electric Power Supply Company, Qimen 245600, China)
 
    Abstract: The global offshore wind power shows the trend of far coast, large-scale and cluster, and the choice of offshore wind power transmission mode is very important. Considering the factors such as the scale of offshore wind farms and the offshore distance, this paper adopts the equal annual value method and combines 14 typical scenarios of offshore wind power. From the two dimensions of technology and economy, makes a comparative analysis of three types of offshore wind power transmission methods, including high-voltage power frequency AC, flexible DC and low-frequency AC. The results show that the power frequency AC transmission technology has technical and economic advantages in the application scenarios of small and medium-capacity, medium- and long-distance offshore wind power transmission, and the economic advantages of flexible DC transmission technology are prominent when applied to large-capacity and long-distance offshore wind power transmission scenarios. At the same time, the comparison of the 35 and 66 kV AC convergence-flexible direct transmission schemes is carried out, and it is pointed out that the 66 kV convergence without oversea booster station-flexible direct transmission scheme is more economical, which further shortens the equivalent distance of AC and DC transmission modes.Then, suggestions on the selection of offshore wind power transmission methods in typical scenarios are given, and guidance on the selection of offshore wind power transmission methods in far coast is proposed.
    Key words: far coast; offshore wind power; high-voltage power frequency AC; flexible DC; low frequency AC; transmission mode; techno-economic analysis
 
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