在电网故障条件下对联网光伏系统的基于VSC的先进控制方法的LVRT能力和稳定性分析的评估
Hussin Zahloul1,2, Arjmand Khaliq1,3, Hamed Hamzehbahmani1
1Department of Engineering, Durham University, DH1 3LE, Durham, United Kingdom.
Heliyon
|March 5, 2024
概括
本研究介绍了2兆瓦电网光伏系统 (GCPV) 的先进控制系统,以提高短路故障期间的可靠性. 控制策略有效地将故障影响降到最低,并确保快速系统恢复,满足英国低压通行能力标准.
科学领域:
- 电气工程 电气工程
- 可再生能源系统可再生能源系统
- 动力系统的稳定性 动力系统的稳定性
背景情况:
- 短路故障会破坏电力系统,需要研究可再生能源的整合.
- 系统惯性下降和不断变化的电网规范凸显了对联网光伏 (GCPV) 系统强有力的控制策略的需求.
研究的目的:
- 设计和评估2兆瓦GCPV系统的先进控制系统,以提高短路故障期间的可靠性.
- 分析系统在稳定状态和故障条件下的动态性能,包括低压通行能力 (LVRT).
主要方法:
- 在MATLAB/Simulink.中建模了一个2兆瓦的两级GCPV系统.
- 在电网侧模拟了线对地面短路故障,以评估系统行为.
- 实施了先进的控制系统,以在故障期间保持稳定性和性能.
主要成果:
- 设计的控制系统有效地减少了短路故障对GCPV系统的影响.
- 该系统在故障清除后迅速恢复.
- 该GCPV系统符合英国对LVRT能力的标准.
- 在共同合点,总波扭曲 (THD) 保持在5%以下,符合IEEE Std. 519.第五百一十九章 这是什么?
结论:
- 先进的控制系统在短路故障时显著提高了GCPV系统的可靠性和稳定性.
- 经过验证的LVRT能力和低THD水平证实了该系统适合现代电网集成.
- 这项研究有助于发展弹性可再生能源基础设施.
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