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Distributed generation causes new challenges in medium voltage networks. Especially voltage stability is becoming an issue. Conventional planning measures, like network expansion, can be used to address this challenge, but they should be planned with great care due to their high costs. Power factor control of distributed generators is an alternative to such measures. Therefore it should also be considered...
This paper deals with designing of Power System Stabilizer (PSS) based on Imperialist Competitive Algorithm (ICA) to improve the stability of power system. The proposed algorithm has been applied on a Single Machine Infinite Bus (SMIB) system where the coefficients of PSS controller has been optimized by ICA. The system with proposed controller has been simulated for the special disturbance in input...
Synchronous generator excitation control system is one of the most important parts of power system control. And as PID control is one of the first developed and the most widely used control schemes in excitation system, its parameters tuning problem has been highly concerned. Since MATLAB genetic algorithm toolbox has the characteristics of strong robustness and efficient optimization, this paper...
In this paper, a design method based on nonsmooth, nonconvex optimization is applied to the design of power system controllers for improving small-signal stability. The design method was developed to solve the problem of the design of low order controllers using output feedback and incorporating robustness constraints. The method is applied to the problem of stabilization of a test system with only...
This paper proposes an algorithm for Volt/VAr control, where the control variables are both discrete (tap position of on-load tap-changing, OLTC transformers, switched-on shunt capacitor banks), and continuous (reactive power of generators). The optimization criterion considered is minimization of the system real power losses, subject to nodal real and reactive power balances and nodal voltage constraints...
Increasing additions of large-scale, non-traditional dispersed electricity generations such as those from wind farms on the traditional power systems have raised considerable concerns about the stability of power systems and adequacy of conventional stability controls. This paper presents an efficient adaptive stability control, based on step-ahead model prediction methodology, for a wide-area power...
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