TITLE:
Study on Approach of Static Security Assessment Accounting for Electro-thermal Coupling
AUTHORS:
Mengxia Wang, Hongbin Sun, Jinxin Huang, Qiang Zhang
KEYWORDS:
Power System; Dynamic Thermal Rating; Static Security Assessment; Transmission Line; Electro-thermal Coupling
JOURNAL NAME:
Energy and Power Engineering,
Vol.5 No.4B,
October
31,
2013
ABSTRACT: A static security assessment approach considering
electro-thermal coupling of transmission lines is proposed in this paper.
Combined with the dynamic thermal rating technology and energy forecasting, the
approach can track both the electrical variables and transmission lines’
temperature varying trajectory under anticipated contingencies. Accordingly, it
identifies the serious contingencies by transmission lines’ temperature
violation rather than its power flow, in this case the time margin of
temperature rising under each serious contingency can be provided to operators
as warning information and some unnecessary security control can also be
avoided. Finally, numerical simulations are carried out to testify the validity
of the proposed approach.