Research on the Large Disturbance Stability of Grid-connected VSC System Considering the Limiter Strategy of Outer Loop

被引：0

作者：

Wang Y. ^{[1
]}

Sun H. ^{[1
]}

Xu S. ^{[1
]}

Shen C. ^{[2
]}

Bi J. ^{[1
]}

Liu X. ^{[3
]}

机构：

[1] China Electric Power Research Institute, Haidian District, Beijing

[2] Department of Electrical Engineering, Tsinghua University, Haidian District, Beijing

[3] State Grid Shanxi Electric Power Research Institute, Shanxi Province, Taiyuan

来源：

Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2023年 / 43卷 / 23期

关键词：

grid-connected VSC system; improved limiter strategy; large disturbance stability; outer loop limiter; the fixed point;

D O I：

10.13334/j.0258-8013.pcsee.221236

中图分类号：

学科分类号：

摘要：

The proportion of renewable energy generation with voltage source converter (VSC) as the interface is increasing. The existing researches only focus on the characteristics of the phase-locked loop (PLL) and other control loops while ignoring the influence of nonlinear loops such as limiter on the stability. To fill the gap, the effect of the VSC outer loop and its limiter on the large disturbance stability is of the main interest in this paper. Firstly, a simplified grid-connected VSC system is established to analyze the existence of equilibrium points, which takes the electrical quantity constrained by the limiter as the state variable. Secondly, based on the Poincaré theorem and Lyapunov’s second theorem, the deterministic condition of the fixed point is proved, which is a fixed position away from the outer loop limiter. The mechanism that the actual power is inconsistent with the command value under the large disturbance is revealed. Then, the limiter principle considering safety and stability is proposed, and based on this, the improved limiter strategy is designed. Finally, the analysis results based on the actual model show that a reasonable outer loop limiter can improve the stability of the grid-connected VSC system. ©2023 Chin.Soc.for Elec.Eng.

引用

页码：9114 / 9126

页数：12

共 23 条

[1] ZHOU Xiaoxin, ZHAO Qiang, ZHANG Yuqiong, Development prospect and key technologies of China energy and power system under the goal of carbon peaking and neutrality, China Power Enterprise Management, 31, pp. 14-17, (2021)
[2] Data list of the national electric power industry statistics express in 2020
[3] Energy foundation.China 2050 high renewable energy penetration scenario and roadmap study
[4] SUN Huadong, XU Tao, GUO Qiang, Et al., Analysis on blackout in Great Britain power grid on August 9<sup>th</sup>, 2019 and its enlightenment to power grid in China, Proceedings of the CSEE, 39, 21, pp. 6183-6191, (2019)
[5] DONG Dong, WEN Bo, BOROYEVICH D, Et al., Analysis of phase-locked loop low-frequency stability in three-phase grid-connected power converters considering impedance interactions, IEEE Transactions on Industrial Electronics, 62, 1, pp. 310-321, (2015)
[6] SUN Huadong, WANG Yiming, GAO Lei, Et al., Research on unification stability criterion for the power electronics dominated power system(II):criterion of the power-electronic interfaced subsystem, Proceedings of the CSEE, 42, 6, pp. 2060-2069, (2022)
[7] ZHANG Yu, CAI Xu, ZHANG Chen, Et al., Transient synchronization stability analysis of voltage source converters:a review, Proceedings of the CSEE, 41, 5, pp. 1687-1701, (2021)
[8] HE Xiuqiang, GENG Hua, Transient stability of power systems integrated with inverter-based generation, IEEE Transactions on Power Systems, 36, 1, pp. 553-556, (2021)
[9] SUN Huadong, WANG Baocai, LI Wenfeng, Et al., Research on inertia system of frequency response for power system with high penetration electronics, Proceedings of the CSEE, 40, 16, pp. 5179-5191, (2020)
[10] LIU Lu, GENG Hua, MA Shaokang, Et al., Synchronization stability and reactive current control method of DFIG wind farm during low voltage ride through, Proceedings of the CSEE, 37, 15, pp. 4399-4407, (2017)

← 1 2 3 →