Phase-Locked Stability Evaluation Method for Combined Renewable Power Generation and Thermal Units Transmission System
In the transmission system of combined renewable power generation and thermal units, there exists risk of the phase-locked instability when the renewable power generation output is high. To deal with this problem, this paper firstly establishes the mathematical expression of the PLL phase angle motion equation to analyze the mechanism for phase-locked instability. Based on this, the method of renewable power phase-locked stability evaluation is proposed. The output combination of synchronous machine and renewable power, under the constraint of renewable power phase-locked stability, can be calculated accurately according to the method. Case study validates the effectiveness of analysis results and computation performance of the proposed method.
Authors
- Shuhan Lu
- Xinwei Wang (ORCID: https://orcid.org/0000-0003-2825-3336)
- Yuming Liu (ORCID: https://orcid.org/0000-0002-9857-5018)
- Yanwei Wang (ORCID: https://orcid.org/0000-0002-8067-1909)
- Haishun Sun (ORCID: https://orcid.org/0000-0001-7606-9571)
- Zhennan Yang
- Jinchang Chen
Institutions
- Huazhong University of Science and Technology (CN)
- China Southern Power Grid (China) (CN)
Publication Details
- Published
- 2024-10-25
- DOI
- https://doi.org/10.1109/appeec61255.2024.10922334
- Primary Topic
- Power Systems and Renewable Energy
- Type
- article
- Field-Weighted Citation Impact
- 0.00