scholarly journals Principle of Least Action in Models and Algorithms of Optimisation States Power System

Author(s):  
Petro Lezhniuk ◽  
Vira Teptya ◽  
Vyacheslav Komar ◽  
Olena Rubanenko

The possibility and feasibility of applying the principle of least action (PLA) in the optimal control of the states of the electric power system (EPS) is demonstrated. The loss of active power and electricity was taken as the criterion of optimality. The algorithm for determining the optimal state of the EPS is presented. The peculiarity of it is that, in accordance with the PLA, the ideal state of the EPS is first determined, and then parametric constraints are taken into account. The ideal state of the system is characterized by the lowest possible losses, and taking into account active restrictions on the parameters translates the system to the optimal state. The losses increase depending on the heterogeneity of the system in the optimal state of the EPS.

2018 ◽  
Vol 12 (3) ◽  
pp. 61-65
Author(s):  
Michalina Gryniewicz-Jaworska ◽  
Petro D. Lezhniuk ◽  
Volodymyr V. Kulyk ◽  
Volodymyr V. Netrebskiy ◽  
Yevhenii V. Duchkov

2013 ◽  
Vol 373-375 ◽  
pp. 1357-1362
Author(s):  
Yuang Yang ◽  
Ming Yu Yang ◽  
Li Xiang ◽  
Mao Sheng Ding ◽  
Yun Ting Song

It studies the changing regulation of fast out-of-step separation criterion based on equivalent two-machine power system. Analysis of the characteristics of the caring variables of fast out-of-step separation criterion on sending end and receiving end is mentioned. In order to solve the problem that the out-of-step connecting line cannot be identified correctly apply on the criterion of the existing fast out-of-step separation if the measurement point at the receiving end, it improves the power angle and active power criterion. The simulation is carried out in our actual grid model with using BPA and the results of the simulation handled by MATLAB proves that the out-of-step of line can be distinguished by using the improved fast out-of-step separation criterion in each end of line.


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