The Lagrangian of Analytical Mechanics and its Application in Power System with TCSC

2014 ◽  
Vol 852 ◽  
pp. 681-685 ◽  
Author(s):  
Ting Yin ◽  
Jie Wang ◽  
Gulizhati Hailati ◽  
Fa Xi Xu
Keyword(s):  
Power System ◽  
Single Machine ◽  
Short Circuit ◽  
Standard Form ◽  
Stability Control ◽  
Analytical Mechanics ◽  
Hamilton System ◽  
Single Machine Infinite Bus ◽  
Matlab Programming ◽  
Bus System

The research and development of Hamilton system have provided an effective approach for the nonlinear analysis and stability control of power system. It also plays an important role in the control of flexible AC transmission system. The application of Lagrange analytical mechanics can improve the realization of Hamilton system and the controller design. The model of single-machine infinite-bus system with TCSC is extended to an even-order system in this paper. On the basis of self-adjoint conditions the standard form of Hamilton realization is obtained with the theory of Lagrange mechanics. By non-conservative analytical mechanics theory, the system controller is designed and Matlab programming is realized on the single-machine infinite-bus system. The simulation effects of the designed controller and general controller under three-phase grounded short-circuit faults are compared, which verifies the effectiveness of the proposed control strategy in this paper. The construction of Hamilton function and design of the controller have a broad prospect of applications.

Nonlinear coordinated control design of generator excitation and static var compensator for power system via input-output linearization

2020 ◽  
pp. 014233122096436
Author(s):  
Salma Keskes ◽  
Souhir Sallem ◽  
Mohamed Ben Ali Kammoun
Keyword(s):  
Power System ◽  
Single Machine ◽  
Short Circuit ◽  
Synchronous Generator ◽  
Voltage Regulation ◽  
Static Var Compensator ◽  
Input Output ◽  
Nonlinear Controller ◽  
Single Machine Infinite Bus ◽  
Input Output Linearization

This paper proposes a nonlinear coordinated controller for a single machine infinite bus power system. The later consists of a synchronous generator connected to the infinite bus via transmission lines, which are equipped with a static var compensator. The proposed control strategy aims to control simultaneously the excitation system of the synchronous generator and the static var compensator in order to improve transient stability and voltage regulation. The input output linearization theory and pole-assignment technique are employed to design the nonlinear controller. The controller’s performance in single machine infinite bus power system is then examined using simulation studies when the studied power system is subjected to three-phase short circuit with a 100ms duration. The results validate the efficiency of the proposed controller, which is based mainly on the good regulation of the static var compensator voltage with removing the static error after fault elimination.

Transient Stability Analysis of Power System Based on Time Domain Simulation

2012 ◽  
Vol 263-266 ◽  
pp. 781-785 ◽  
Author(s):  
Liang Pi ◽  
Chen Wang ◽  
Wei Zheng
Keyword(s):  
Power System ◽  
Single Machine ◽  
Time Domain ◽  
Transient Stability ◽  
Simulation Models ◽  
Time Domain Simulation ◽  
Power System Stabilizers ◽  
Machine System ◽  
Single Machine Infinite Bus ◽  
Bus System

Single-machine infinite-bus system and two-machine system simulation models were built to study the power system transient stability. Based on time domain simulation, the effect of generator inertia time constant (τg), and excitation system ceiling voltage (Ke) on transient stability were analyzed by single-machine infinite-bus system. The changes of transient stability of two-machine system were also compared by means of power system stabilizers (PSS) and static VAR compensator (SVC). In particular, the system transient stability varied greatly in different locations of SVC. Finally, some suggestions concerning the improvement of power system transient stability were put forward.

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