Power lines are cables that carry electrical power from a power plant to an electrical substation. They must be connected between the tower structures in such a way that ensures minimum tension and sufficient clearance from the ground. Power lines can stretch and sag with the changing weather, eventually exceeding the planned tolerances. The excessive sags can then cause serious accidents, whil...

Optimization is the discipline of adjusting a process so as to optimize some specific set of parameters, without violating some constraints. In this paper an optimization is made by means of weighted sum method, after a multi-objective programming model formed based upon the power supply radius from a substation. The main aim of the model is to enlarge the radius of power supply as much as poss...

This paper presents a method for assessing the voltage and reactive power control impact on the reliability indices of distribution networks. It has been achieved by including network constraints (voltage drop and feeder loading) in the predictive reliability model. The analytical method has been used to evaluate the reliability indices. The proposed method has been tested and validated, using ...

Large perceptual class motor load is the main production equipment of metallurgical enterprise, although has taken independent secondary substation power supply mode, but due to the influence of the impact load, Often appears on the bus voltage drop and low power factor and harmonic big problems, , this article is based on SVC compensation control mechanism, the sectional control mode, the prin...

Abstract Modular substations meet the development trends of power transmission system. However, operation maintenance strategy for modular substation is still lacking. Herein, an intelligent proposed based on fault tree method. After rating state components in equipment, equipment obtained. Subsequently, by analyzing relationship between and modules substation, a model established to calculate ...

This paper investigates the impacts of a wind farm connected at Harterbeespoort substation in South Africa on voltage stability of the power network. The site wind speed was determined and analyzed for viability. A comparison is made between the use of Doubly-Fed Induction Generators and Self-excited Induction Generators driven by the wind turbines. The resulting P-V and Q-V curves from load fl...

The IEEE1588 network time synchronization, matched with smart substation information network transmission, is becoming the next generation advanced data synchronization of the smart substation. It is known that the inherent asymmetry error of the network synchronization approach in the smart substation is highlighted, which is concerned particularly. This paper models the synchronization proces...

The smart-grid concept takes the communications from the enclosed and protected environment of a substation to the wider city or nationwide area. In this environment, cyber security takes a key role in order to secure the communications. The challenge is to be able to secure the grid without impacting the latency while, at the same time, maintaining compatibility with older devices and non secu...

Distribution Substation Automation in Smart Grid Substation Automation (SA) can provide integral functions to the distribution grid automation. As more IED devices are installed to the distribution network, the need for IED management, control, and the corresponding advanced application operation is a growing imperative. Moreover, the Smart Grid applications, such as the Integrated Voltage and ...

Dispersed sources can cause significant voltage changes in the MV and LV distribution grids, which common voltage regulation of the grid by on-load tap changing of HV/MV power transformers can neither find nor respond to in an appropriate and effective way. In the proposed solution, stabilization of the voltage is preferably achieved by power factor or reactive power regulation (PF / Q) of conn...