Calculation and Analysis of Power Transmission Capacity of Flexible Low-frequency AC Transmission System for Offshore Wind Power

被引：0
|
作者：
Zhao Z. [1 ]
Chen W. [2 ,3 ]
Zhao G. [2 ]
Xu Y. [2 ]
Lu Z. [2 ]
Han B. [1 ]
机构：
[1] China Electric Power Research Institute, Beijing
[2] State Key Laboratory of Advanced Power Transmission Technology, State Grid Smart Grid Research Institute, Beijing
[3] State Grid Corporation of China, Beijing
来源：
Dianli Xitong Zidonghua/Automation of Electric Power Systems | 2023年 / 47卷 / 11期
关键词：
flexible low-frequency AC transmission; offshore wind power transmission; power transmission capacity; system parameter; transmission frequency;
D O I：
10.7500/AEPS20221025004
中图分类号：
学科分类号：
摘要：
Flexible low-frequency AC transmission systems have technological and economic advantages when applied to medium and long distance offshore wind power transmission. The study of power transmission capacity is an important reference for determining system parameters and schemes. In this paper, the voltage and current constraints of the flexible low-frequency AC transmission system for offshore wind power are analyzed. A transmission capacity calculation method described by the maximum transmission power and the longest transmission distance is derived. The transmission capacities of 220 kV and 330 kV systems are calculated, and the influences of the transmission frequency and submarine cable cross section are analyzed. The results show that selecting 12.5~30 Hz transmission frequency and maximum 1 200 mm2 submarine cable cross section, the maximum capacity of wind farms delivered by 220 kV and 330 kV systems are 200~400 MW and 200~570 MW respectively for the offshore distance of 250 km. The actual parameters of the flexible low-frequency AC transmission system for offshore wind power are determined specifically on the basis of economic analysis. © 2023 Automation of Electric Power Systems Press. All rights reserved.
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页码：1 / 8
页数：7
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