混合兼容的电网形成逆变器,用于低惯性和混合发电网的协调调节
Biddut Bhowmik1, Moses Amoasi Acquah2, Sung-Yul Kim3
1Electrical Engineering, School of Electrical and Biomedical Engineering, College of Engineering, Hanyang University, Seoul, 04763, Republic of Korea.
Scientific reports
|August 16, 2025
概括
混合兼容电网形成逆变器 (HC-GFI) 通过模拟同步发电机来增强低惯性电力系统. 高频-GFI 提高了频率稳定性,功率共享和故障恢复,使可靠的可再生能源集成成为可能.
科学领域:
- 电气工程 电气工程
- 电力系统工程 电力系统工程
- 整合可再生能源的整合
背景情况:
- 由可再生能源驱动的低惯性电力系统面临频率不稳定性和协调挑战.
- 传统的同步发电机正在被取代,需要先进的电网控制解决方案.
研究的目的:
- 为稳定低惯性电力系统提出并验证混合兼容电网形成逆变器 (HC-GFI).
- 通过模拟SG行为以提高性能来增强混合代系统的互操作性.
主要方法:
- 对于HC-GFI来说,一个多层级的级联控制架构,包括掉落控制,电压调节和电流限制.
- 引入基于和的新型直流和交流电流调节器,以解决超电流和故障通行限制.
- 在IEEE 9-bus和39-bus系统中进行广泛的时间域模拟,以评估可扩展性和动态性能.
主要成果:
- 在HC-GFI系统中,HC-GFI在9个总线系统中减少了高达0.43Hz的频率最低偏差,并提高了90%以上的定位时间.
- 电压偏差保持在0.02 p.u. 的范围内. 振荡在5秒内减弱,与只有SG系统形成鲜明对比.
- 在HC-GFI中,已证明符合IEEE Std. 的要求. 2800-2022 在权力共享和暂时缓解方面,RoCoF门和超越性能的SG.
结论:
- HC-GFI为稳定低惯性电网提供了强大,可扩展和符合标准的解决方案.
- 拟议的HC-GFI对于实现可再生能源资源的可靠整合至关重要.
- 该框架解决了现代电力系统中具有高可再生能源透率的关键挑战.
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