In developing countries, power system planning faces nowadays enormous challenges and various problems as, for example, future load growth in the face of uncertainties associated with future load forecasting, the constraints imposed on investment, the type and availability of fuel for the generating units, the need for consolidating dispersed electric utilities in the isolated regions as a prer...

The authors have developed a power-assisted system aimed at solving the following problems in a factory; i.e., a common conveyance system such as an overhead crane using pushbutton control can pose difficulties for the operator in positioning an object due to the object’s vibration. As well, workers often suffer physically from directly moving or lifting heavy objects. In light of this, our pro...

This paper presents a method in expansion planning of transmission systems using the AC optimal power flow (AC-OPF). The AC-OPF provides a more accurate picture of power flow in the network compared to the DC optimal power flow (DC-OPF) that is usually considered in the literature for transmission expansion planning (TEP). While the AC-OPF-based TEP is a mixed-integer nonlinear programming prob...

The Russian power system is diversified regionally and consists of one Unified Power System (UPS) and multiple isolated power systems. In the Russian Federation the policy on the use of renewable energies has been one of the most debated topics in recent years. In 2010, the Russian Renewable Energy Program was launched which aims to generate 4.5% of the entire electricity demand from renewable ...

The robust Newton–Raphson method is suggested to solve the power flow equations. Newton power flow algorithms do not automatically minimize objective function such as real power losses. Hence, this paper presents teaching learning based optimization (TLBO) approach to minimize power lossesby the optimal allocation of reactive power sources considering placement and value in restructured power s...

The uncertain and volatile nature of wind energy have brought huge challenges to power system planning operation. Therefore, it is necessary model the output. In this paper simulation models output for new are reviewed. We begin by discussing characteristics output, then introduce based on different application scenarios that probability time series. Finally, directions further research in futu...