A Critical System Strength Evaluation of a Power System with High Penetration of Renewable Energy Generations

Lin Yu; Huadong Sun; Shiyun Xu; Bing Zhao; Jian Zhang

doi:10.17775/CSEEJPES.2021.03020

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A Critical System Strength Evaluation of a Power System with High Penetration of Renewable Energy Generations

Regular Papers | 更新时间：2026-10-15

- A Critical System Strength Evaluation of a Power System with High Penetration of Renewable Energy Generations
- A Critical System Strength Evaluation of a Power System with High Penetration of Renewable Energy Generations
- 中国电机工程学会电力与能源系统学报(英文) 2022年8卷第3期页码：710-720
- 作者机构：
  
  State Key Laboratory of Power Grid Safety and Energy Conservation, China Electric Power Research Institute,Beijing,China
- 作者简介：
- 基金信息：
- DOI：10.17775/CSEEJPES.2021.03020
  中图分类号：
- 纸质出版：2022-05-01
- 稿件说明：
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Lin Yu, Huadong Sun, Shiyun Xu, 等. A Critical System Strength Evaluation of a Power System with High Penetration of Renewable Energy Generations[J]. 中国电机工程学会电力与能源系统学报(英文), 2022,8(3):710-720.

Lin Yu, Huadong Sun, Shiyun Xu, et al. A Critical System Strength Evaluation of a Power System with High Penetration of Renewable Energy Generations[J]. CSEE Journal of Power and Energy Systems, 2022, 8(3): 710-720.
Lin Yu, Huadong Sun, Shiyun Xu, 等. A Critical System Strength Evaluation of a Power System with High Penetration of Renewable Energy Generations[J]. 中国电机工程学会电力与能源系统学报(英文), 2022,8(3):710-720. DOI： 10.17775/CSEEJPES.2021.03020.

Lin Yu, Huadong Sun, Shiyun Xu, et al. A Critical System Strength Evaluation of a Power System with High Penetration of Renewable Energy Generations[J]. CSEE Journal of Power and Energy Systems, 2022, 8(3): 710-720. DOI： 10.17775/CSEEJPES.2021.03020.

摘要

Abstract

The power system is experiencing a higher penetration of renewable energy generations (REGs). The short circuit ratio (SCR) and the grid impedance ratio (GIR) are two indices to quantify the system strength of the power system with REGs. In this paper

the critical short circuit ratio (CSCR) is defined as the corresponding SCR when the system voltage is in the critical stable state. Through static voltage stability analysis

the mathematical expression of the CSCR considering the impact of GIR is derived. The maximum value of CSCR is adopted as the critical value to distinguish the weak power system. Based on the static equivalent circuit analysis

it is proved that the CSCR is still effective to evaluate critical system strength considering the interactive impact among REGs. Finally

we find that the GIR can be neglected and the SCR can be used individually to evaluate the system strength when SCR>2 or GIR>5. The correctness and rationality of the CSCR and its critical value are validated on ADPSS.

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references

9. GE Energy Consulting. ( 2014, Oct. ). Minnesota renewable energy in-tegration and transmission study: final report. GE Energy Consulting , Schenectady, NY, USA. [Online ] . Available: https://mn.gov/commerce-stat/pdfs/mrits-report-2014.pdf.

15. AEMO. ( 2018, Mar. ). System strength impact assessment guidelines. AEMO, AUS . [Online ] . Available: P https://aemo.com.au/-/media/Files/Stakeholder_Consultation/Consultations/Electricity_Consultations/2018/SSI/System-Strength-Impact-Assessment-Guidelines-For-Consultation.pdf.

16. AEMO. ( 2020, Mar. ). System strength in the NEM explained. AEMO, AUS . [Online ] . Available: https://www.aemo.com.au/-/media/files/electricity/nem/system-strength-explained.pdf?la=en.

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