Impacts Analysis of VSC Control Loop on DC Voltage Control Stability in Weak-grid

被引：0

作者：

Zhang S. ^{[1
]}

Huang Y. ^{[1
]}

Zhou D. ^{[2
]}

Xing Z. ^{[2
]}

Chen F. ^{[1
]}

Zhu G. ^{[1
]}

机构：

[1] School of Automation, Wuhan University of Technology, Wuhan

[2] Hopewind Electric Co., Ltd., Shenzhen

来源：

Gaodianya Jishu/High Voltage Engineering | 2021年 / 47卷 / 08期

基金：

中国国家自然科学基金;

关键词：

AC voltage control; DC voltage control; Dynamic characteristics; Phase-locked control; Stability; Weak grid;

D O I：

10.13336/j.1003-6520.hve.20201514

中图分类号：

学科分类号：

摘要：

In order to study the influence of VSC control loop on the stability of DC voltage control in weak-grid, a time-scale small signal model of VSC DC voltage in weak-grid was established firstly. Based on the analysis of dynamic characteristics, the stability of VSC DC voltage control was characterized by using damping components and restoring components. Moreover, under different strengths and different grid control bandwidths, the influence law of the VSC phase-locked loop and AC voltage control loop on the damping component and restoring component was studied, and the influence mechanism of the phase-locked control and AC voltage control on the DC voltage stability was revealed. Finally, a detailed time-domain simulation model was constructed on the Matlab/Simulink, and the stability analysis results were verified. The research results show that, in a weak grid, the phase-locked control and AC voltage control play a lag role in DC voltage control of phase, and negative additional damping components are generated, which damages the stability of DC voltage control. © 2021, High Voltage Engineering Editorial Department of CEPRI. All right reserved.

引用

页码：2730 / 2741

页数：11

共 19 条

[1]

PIWKO R, MILLER N, SANCHEZ-GASCA J, Et al., Integrating large wind farms into weak power grids with long transmission lines, 2005 IEEE/PES Transmission & Distribution Conference & Exposition: Asia and Paciﬁc, pp. 1-7, (2005)

[2]

YUAN Xiaoming, CHENG Shijie, HU Jiabing, Multi-time scale voltage and power angle dynamics in power electronics dominated large power systems, Proceedings of the CSEE, 36, 19, pp. 5145-5154, (2016)

[3]

SALOMONSSON D, SANNINO A., Comparative design and analysis of dc-link-voltage controllers for grid-connected voltage-source converter, 2007 IEEE Industry Applications Annual Meeting, pp. 1593-1600, (2007)

[4]

PAN Ersheng, WANG Zhidong, WANG Dong, Et al., Stability analysis of phase-locked loop synchronized DFIGs in weak grids, High Voltage Engineering, 46, 1, pp. 170-177, (2020)

[5]

LIU Ju, YAO Wei, WEN Jinyu, Small signal stability analysis and control of double-fed induction generator considering influence of PLL and power grid strength, Proceedings of the CSEE, 37, 11, pp. 3162-3173, (2017)

[6]

ZHAO Shuqiang, SHAO Bingbing, LI Ren, Analysis on oscillation modes of VSC-HVDC system, Southern Power System Technology, 12, 2, pp. 105-113, (2018)

[7]

REN Bixing, DU Wenjuan, WANG Haifeng, Et al., Influence of PLL control on sub-synchronous oscillation stability of grid-connected PMSG: control parameter safety region, Electric Power Automation Equipment, 40, 9, pp. 142-147, (2020)

[8]

HUANG Y H, YUAN X M, HU J B, Et al., Modeling of VSC connected to weak grid for stability analysis of DC-Link voltage control, IEEE Journal of Emerging and Selected Topics in Power Electronics, 3, 4, pp. 1193-1204, (2015)

[9]

WANG Zhiwen, SHEN Chen, LIU Feng, Analysis on impact of doubly fed induction generations with different phase lock mechanism on power system small signal stability, Proceedings of the CSEE, 34, 34, pp. 6167-6176, (2014)

[10]

SHAO Bingbing, ZHAO Shuqiang, PEI Jikun, Et al., Analysis of subsynchronous oscillation characteristics of direct drive wind power plant connected to grid by VSC-HVDC, Power System Technology, 43, 9, pp. 3344-3355, (2019)

← 1 2 →