期刊
ENERGIES
卷 15, 期 17, 页码 -出版社
MDPI
DOI: 10.3390/en15176363
关键词
offshore wind farm; VSC-HVDC; kinetic energy; DC capacitor; frequency regulation
资金
- Science and Technology Project of State Grid Jibei Electric Power Co., Ltd. [52018K20007D]
This paper proposes an improved frequency regulation strategy for VSC-HVDC integrated offshore wind farm. The strategy utilizes the rotor kinetic energy of wind turbines to suppress frequency decrease and uses the DC capacitors of VSC-HVDC to compensate for the deficiency value of wind farm output power, thereby addressing the frequency stability problems caused by large renewable energy integration.
Voltage source converter based high voltage DC system (VSC-HVDC) has become a very promising solution to integrate offshore wind farm. However, the equivalent inertia of the modern power system with large renewable energy integration becomes small, which will arouse some frequency stability problems. To tackle this problem, this paper proposes an improved frequency regulation strategy for VSC-HVDC integrated offshore wind farm. Firstly, in the frequency decrease stage, the rotor kinetic energy of wind turbines (WTs) is used to suppress the decrease of the frequency, and the control parameters are determined to make full use of the mechanical power and rotor kinetic energy of WTs, the frequency nadir is improved. Secondly, in the rotor speed recovery stage, the DC capacitors of VSC-HVDC are used to release power to compensate the deficiency value of wind farm output power and avoid the secondary frequency drop (SFD) problem. Lastly, the simulation is conducted in PSCAD/EMTDC to validate the effectiveness of the proposed coordinated frequency control strategy.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据