Calculation of TTC for AC/DC Power Systems Based on Improved Continuation Power Flow

2018 3rd International Conference on Insulating Materials, Material Application and Electrical Engineering

材料科学;无线电电子学;电工学

Yang, Xiaonan^1 ; Li, Qiang^1 ; Wei, Zirui^2 ; Zhao, Kun^1 ; Geng, Guangfei^2 ; Lang, Yansheng^1

China Electric Power Research Institute, Haidian District, Beijing

100192, China^1

China Agricultural University, Haidian District, Beijing

100083, China^2

关键词: AC/DC power systems;    Continuation power flow;    Continuous power flow;    Economic operations;    Mathematical optimizations;    Minimum generations;    Piecewise linearization;    Total transfer capability;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/452/4/042083/pdf
DOI  :  10.1088/1757-899X/452/4/042083

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

A model of total transfer capability (TTC) for the AC/DC system with multi-terminal voltage source converter DC (VSC-MTDC) system is set up in this paper. As the load and generator power in traditional continuation power flow (CPF) algorithm increased with equal proportion, a novel continuous power flow approach based on economic operation of power grid is proposed. In the method, taking the minimum generation cost as the goal, the distribution of generator output is optimized by economic dispatching based on linear programming method, which can avoid the defects of some existing methods that caused by the piecewise linearization of incremental ratio of generator consumption curve. The distribution of load increment and the parameters of VSC control modes are optimized by mathematical optimization method to minimize the network loss, which can get the TTC under economic conditions. Finally, cases study based on modified IEEE 9-node system and modified IEEE 30-node system verify the rationality and effectiveness of the proposed methods.