Optimization Control Technology of VSC-HVDC Supporting Partition Interconnection of Urban Power Grid

被引：0
|
作者：
Tang X. [1 ]
Zhang Z. [1 ,2 ]
Han M. [1 ]
Wang J. [3 ]
Xie Y. [2 ]
Tian C. [3 ]
机构：
[1] School of Electrical and Electronic Engineering, North China Electric Power University, Beijing
[2] State Key Laboratory of Grid Security and Energy Conservation, China Electric Power Research Institute, Beijing
[3] State Grid Henan Electric Power Company, Zhengzhou
来源：
Dianli Xitong Zidonghua/Automation of Electric Power Systems | 2019年 / 43卷 / 12期
基金：
中国国家自然科学基金;
关键词：
Adaptive droop control; Emergency power support; Flexible interconnection; Urban power grid;
D O I：
10.7500/AEPS20180925006
中图分类号：
学科分类号：
摘要：
Aiming at the problems of insufficient power supply capacity, unbalanced load and poor safety and reliability of urban grid voltage-grading and district-dividing structure, an optimal control strategy of voltage source converter based high voltage direct current (VSC-HVDC) supporting the partition interconnection of urban power grid is proposed. Firstly, the steady-state and transient-state optimization control objectives are established for the safe and economic operation requirements of urban power grids. Secondly, a comprehensive evaluation index considering load balancing and network loss is established, and the step-by-step approximation method is used to quickly solve the VSC-HVDC optimal power so as to achieve optimal power flow control of urban power grid in steady state. A multi-terminal HVDC adaptive droop control strategy based on the power margin of converter station is designed, which can reasonably allocate emergency power support in each partition after fault and reduce DC voltage deviation. The effectiveness and engineering practicability of the proposed method are verified through the actual example of Zhengzhou urban power grid of China. © 2019 Automation of Electric Power Systems Press.
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页码：179 / 185
页数：6
相关论文
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