System-level Control Strategy for UPFC Power Grids Integrated with UHVDC

被引：0

作者：

Yang J. ^{[1
]}

Song P. ^{[2
]}

Xu Z. ^{[1
]}

Cai H. ^{[3
]}

Xie Z. ^{[3
]}

机构：

[1] College of Electrical Engineering, Zhejiang University, Hangzhou

[2] National Electric Power Dispatching and Control Center, State Grid Corporation of China, Beijing

[3] Economic Research Institute of State Grid Jiangsu Electric Power Co. Ltd., Nanjing

来源：

Dianli Xitong Zidonghua/Automation of Electric Power Systems | 2019年 / 43卷 / 10期

关键词：

Control strategy; Line overload control; Ultra-high voltage direct current (UHVDC); Unified power flow controller (UPFC); Voltage regulation;

D O I：

10.7500/AEPS20180916005

中图分类号：

学科分类号：

摘要：

To alleviate the problem of line overload raised by the integration of ultra-high voltage direct current (UHVDC) transmission systems, and to enhance the voltage support strength of the AC bus of the UHVDC station, the sensitivities of line loads and AC bus voltage magnitudes to the control of unified power flow controller (UPFC) are deduced based on electrical network theories. Then, the feasibility of the active/reactive power flow control ability of the series converter and the reactive power control ability of the shunt converter to achieve line overload control and voltage regulation is analyzed. On this basis, a UPFC control strategy for power grids integrated with UHVDC is developed. Using this control strategy, the system-level settings of the UPFC are generated automatically based on current/voltage measurements. Finally, a case study is done in the Suzhou southern power grid of China, where the 500 kV UPFC project and Jinping-Sunan UHVDC transmission system are located. The effectiveness of control sensitivity analysis and the feasibility of proposed control strategy are verified in the case study. © 2019 Automation of Electric Power Systems Press.

引用

页码：109 / 117

页数：8