对以可再生能源为主导的电力系统的同步稳定性和多时间尺度分析
Rui Ma1, Yayao Zhang1, Miao Han1
1State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Hubei Electric Power Security and High Efficiency Key Laboratory, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
Chaos (Woodbury, N.Y.)
|August 7, 2023
概括
可再生能源的整合改变了电力系统的动态,需要超越传统模型的多尺度分析. 本次审查澄清了可再生能源主导电力系统 (RDPS) 的同步稳定性.
科学领域:
- 电力工程 电力工程
- 可再生能源系统可再生能源系统
- 控制理论 控制理论
背景情况:
- 传统的电力系统依赖于同步发电机 (SG),并通过微分代数方程 (DAE) 用单一的机电时间表来描述.
- 像永久磁同步发电机 (PMSG),双输电感应发电机 (DFIG) 和光伏发电机 (PV) 等可再生能源的大规模集成改变了系统动态.
- 可再生能源主导的电力系统 (RDPS) 在节点行为和网络交互方面都表现出复杂的多时间尺度特性.
研究的目的:
- 审查RDPS的同步稳定性和多时间尺度特征的最新进展.
- 为了解RDPS动态提供统一的框架,弥合传统电力系统分析和现代可再生能源整合之间的差距.
- 建立对 RDPS 稳定机制的基本理解,解决现有的研究差距和争议.
主要方法:
- 从节点和网络的角度分析同步稳定性和多时间尺度属性.
- 在三个关键时间尺度上检查动力学:交流电流控制,直流电压控制和旋转机电机械.
- 将RDPS动态与传统的SG主导的电力系统进行比较,突出了建模和稳定性的差异.
主要成果:
- RDPS动态需要多个时间尺度的描述,与传统电力系统的单一时间尺度不同.
- 为RDPS建立了交流电流控制,直流电压控制和旋转机电机械时间表的模型.
- 阶段锁定循环 (PLL) 被确定为影响整体系统同步和动态的关键组件.
结论:
- 与传统的电力系统相比,RDPS具有独特的多时间尺度动态和同步特性.
- 一个类似于DAE的框架可以在RDPS分析中适应每个时间表,从而使电力工程师更容易熟悉.
- 这一综述为 RDPS 稳定机制提供了关键的物理图像,这对于未来的研究和电网管理至关重要.
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