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This paper presents the results of a new program developed for sag-tension calculation in power substations. The different stages of the process are presented and explained in detail. The main advantages of the program are explained and compared with traditional solutions in today's market for sag-tension calculations.
This paper presents the results of a new program developed for sag-tension calculation in power substations. The different stages of the process are presented and explained in detail. The main advantages of the program are explained and compared with traditional solutions in today's market for sag-tension calculations.
This paper presents the results of a new program developed for sag-tension calculation in power substations. The different stages of the process are presented and explained in detail. The main advantages of the program are explained and compared with traditional solutions in today's market for sagtension calculations.
Smart Grids are a hot topic with hundreds of applications and different approaches. In the present paper, the proposed system integrates street lighting, renewable energy sources, energy storage devices and inverter connected to the mains. With this in mind, the Smart Grid can be considered not only as an energy consumer/generator but also as a grid supporter, being capable of reducing the energy...
In this paper, a modified droop control combined with power-line signaling is applied to several public dc street/road lighting microgrids with microgeneration and storage capability. The idea is to communicate low-level microgrid's main converter with the battery management system (BMS) injecting a high-frequency signal into the dc bus. Depending on the value of this frequency, the batteries will...
The purpose of this project is to analyze the technical possibilities of implementing a sustainable gym, where all the electric energy generated by sport machines, is injected into the grid. In a first phase it will be include electric generators to the static bicycles based on permanents magnets generators (PMG), so that all the energy is injected to a DC bus. Subsequently an electronic inverter...
This paper presents a multifunctional bidirectional converter applied to street lighting and photovoltaic (PV) microgeneration systems. The proposed converter works as an electronic driver supplying a street lighting luminaire based on light emitting diodes (LEDs) at night, from ac single-phase mains with high power factor and reduced harmonic distortion. During daylight hours, the converter injects...
The present document shows an analysis about the possible application of compact hybrid modules on substations, taking into account the most common layouts applied on transmission substations. At the end of the analysis the considerations that must be taken into account are identified, as well as the advantages in comparison with conventional equipment.
Most common Power Factor Correction (PFC) solutions for low power applications, when galvanic isolation is required, involve the use of discontinuous conduction mode (DCM) dc to dc topologies. The control is generally based on fixed duty ratio operation, or at best, on a classic low-bandwidth duty-ratio control. Considering public lighting systems, in which a high number of low power converters are...
This paper defines, explains and implements a unified switching pattern for the switches in a bidirectional Discontinuous Conduction Mode (DCM) Flyback converter, used for connecting the individual elements of a street lighting system to the mains facility. In every individual element, the DC bus links the different existing stages, such as lamp driver, energy storage stage, power generation stage...
This paper presents a multifunctional bidirectional converter. The proposed converter works as a grid-tied inverter, injecting power coming from a PV subsystem to the AC mains in the daytime hours, but also supplies energy to a LED-based street lighting system at night. The topology is based on the integration of two Flyback converters thus allowing the desired bidirectional energy flux. Each Flyback...
Power regulation of all converter units in a micro-grid should not be only determined by load demand, but also by the available power of each unit, i.e. a converter fed by a battery. Energy management control is essential in order to handle the variety of prime movers which may include different types of renewable energy sources (RES) and energy storage systems (ESS). Specifically, the recharging...
Power regulation of all converter units in a micro-grid should not be only determined by load demand, but also by the available power of each unit, i.e. a converter fed by a battery. Energy management control is essential in order to handle the variety of prime movers which may include different types of renewable energy sources (RES) and energy storage systems (ESS). Specifically, the recharging...
The present work presents a proposal to standardize the capacity of shunt power reactors used to compensate the majority of the 400 kV transmission lines in the transmission grid of Mexico. This work is based on an analysis of the power reactor ratings that historically has been used in Mexico's transmission grid, the physical and electrical characteristics of the transmission towers where power reactors...
This paper proposes a strategy control for energy storage systems with Electrochemical Capacitors. Electrochemical capacitors are electrochemical devices, which have a similar behavior that conventional capacitor, but with much more capacitance. In this work the electrochemical capacitor is used as an energy storage, with the advantage of its high response. The power converter chosen for this work...
The present work briefly presents a methodology that has been developed and applied in a success manner to create complete 3D virtual models for power substations. This work describes the different modeling process stages for each kind of element of an installation, pointing out the mean problems that have been faced to represent real objects that can be manipulated in an easy way with common software...
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