—The parameter errors of power network can lead significantly deteriorate state estimation results in power system.In this paper, identification of suspicious parameters based on Lagrange multiplier is analyzed firstly. Then, a method of distinguishing the suspicious branch sets is proposed. Finally, the variable step integration algorithm is used to estimate the identified suspicious parameters. The proposed method has been deployed in several provincial power control centers to estimate the identified suspicious parameters. The experimental results illustrate the effectiveness of the proposed algorithm.
—Power network, parameters identification and estimation, power system, state estimation.
Xinyi Wang is with Nanjing University of Aeronautics and Astronautics, Nanjing, China (e-mail: Email: email@example.com).
Zhi Liu is with the 28th Research Institute of China Electronic Technology Group Corporation, Nanjing, China (e-mail: firstname.lastname@example.org).
Cite: Xinyi Wang and Zhi Liu, "Parameters Identification and Estimation in Power System Based on Lagrange Multiplier and Variable Step Integration Algorithm," International Journal of Engineering and Technology vol. 8, no. 6, pp. 418-421, 2016.