基于模块化多电平矩阵换流器的海上风电分频系统经济性分析
摘要:以远距离、大容量海上风电场并网为背景，综合对比海上高压直流(high-voltage DC, HVDC)输电系统与分频输电系统(fractional frequency transmission system, FFTS)的经济性，旨在为远距离、大容量海上风电并网提供一种技术上可行、经济上合理的新型参考技术解决方案。首先，对比分析海上风电HVDC输电系统与FFTS各主要设备；其次，以现有设备成本为基础，运用现金流折现模型方法分析对比基于模块化多电平技术(modularized multilevel converter, MMC)的海上HVDC输电系统和模块化多电平矩阵变换技术(Modular multilevel matrix converter，M3C)海上FFTS的经济性，并考虑系统投入一次成本、维护成本及设备损耗，最终得出了海上HVDC输电系统和海上FFTS经济临界距离，其约为离岸125 km。
Abstract：Taking the large-capacity and long-distance offshore wind farm as the research background, this paper comprehensively compares the economy of the offshore high-voltage DC (HVDC) transmission system and the fractional frequency transmission system (FFTS), and aims to provide a feasible and economically reasonable new reference technology solution for long-distance and large capacity offshore wind power integration. Firstly, through the analysis of the main equipment, the HVDC transmission system and the FFTS are compared. Secondly, based on the existing equipment cost, the discounted cash flow model method is used to analyze and compare the economy between modular multilevel converter (MMC)-based offshore HVDC transmission system and modular multilevel matrix converter (M3C)-based offshore transmission system, with considering the system investment costs, maintenance costs and equipment loss. Finally, it is concluded that the critical economic distance between the offshore HVDC transmission system and the offshore FFTS is approximately 125 km offshore.
标题：基于模块化多电平矩阵换流器的海上风电分频系统经济性分析
title:Economic Analysis of Fractional Frequency Transmission System for Offshore Wind Farm Based on Modular Multilevel Matrix Converter
作者：汪大洋,刘宗烨,李沛,黄进,曹晶,伋玉聪,周芮冰
authors:WANG Dayang,LIU Zongye,LI Pei,HUANG Jin,CAO Jing,JI Yucong,ZHOU Ruibing
关键词：海上风电,高压直流输电,分频输电,模块化多电平矩阵换流器,经济区间,
keywords:offshore wind farm,high-voltage DC (HVDC) transmission,fractional frequency transmission system (FFTS),modular multilevel matrix converter (M3C),economic distance,
发表日期：2018-06-13
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