An Novel Continuation Power Flow Method Based on Line Voltage Stability Index

2017 3rd International Conference on Environmental Science and Material Application

生态环境科学;材料科学

Zhou, Jianfang^1 ; He, Yuqing^1 ; He, Hongbin^1 ; Jiang, Zhuohan^1

Hunan Electric Power Corporation Economical and Technical Research Institute, Changsha, China^1

关键词: Continuation power flow;    Continuation power flow method;    Development trends;    Direction vector;    Line voltage stability indices;    Local characteristics;    Voltage instability;    Voltage stability margins;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/108/5/052050/pdf
DOI  :  10.1088/1755-1315/108/5/052050

来源: IOP

【 摘 要 】

An novel continuation power flow method based on line voltage stability index is proposed in this paper. Line voltage stability index is used to determine the selection of parameterized lines, and constantly updated with the change of load parameterized lines. The calculation stages of the continuation power flow decided by the angle changes of the prediction of development trend equation direction vector are proposed in this paper. And, an adaptive step length control strategy is used to calculate the next prediction direction and value according to different calculation stages. The proposed method is applied clear physical concept, and the high computing speed, also considering the local characteristics of voltage instability which can reflect the weak nodes and weak area in a power system. Due to more fully to calculate the PV curves, the proposed method has certain advantages on analysing the voltage stability margin to large-scale power grid.