66 kV交流接入海上换流站方案的技术经济性

为探究66 kV接入海上换流站与传统的35 kV升压220 kV接入海上换流站的技术及经济性对比，以中国南海某风电场接入工程为例，分析66 kV交流直接接入海上换流站与传统的35 kV升压220 kV接入海上换流站两种方案在功率损耗、一次电气设备投资等方面的差异，综合对比，得出66 kV交流接入方案具有更好经济性的结论。随着中国海上风电的发展，66 kV交流接入方案在降低海上风电柔性直流系统建造成本和推动技术创新性方面，均表现出了很好的技术优势。

Techno-economic of 66 kV AC Connection Solution for Offshore Wind Power

For techno-economic comparison between the scheme of 66 kV AC collection system of offshore wind power connected directly to converter station and the traditional scheme of 35 kV collection system connected to converter station through a 220 kV booster station and 220 kV cables, an offshore wind farm in South China Sea is chosen for a case study. The two connection schemes of the wind farm are compared in terms of power loss, primary electrical equipment investment, and others. It is concluded that the 66 kV AC connection scheme is better in economic benefit. Along with the development of offshore wind farms in China, the 66 kV AC connection scheme has very good technical advantages in reducing the construction cost of VSC-HVDC system for offshore wind power and promoting innovation of technologies.