Showing papers on "Stand-alone power system published in 2020"

Grid-Connected Photovoltaic System

Abstract: As energy needs increase and fossil resources decrease, the development of grid-connected photovoltaic energy is becoming an important part of the energy mix in the majority of countries. In this article, our attention has been concentrated on a strategy to control and interface photovoltaic power injection systems to the grid without batteries in order to make a significant and reliable contribution to sustainable energy supply and further improve the performance and stability of the power system. Different control mechanisms are considered in power flow management, maximum power point tracking (MPPT) for a three-phase photovoltaic inverter connected to the grid, PLL design standards (Phase Locked Loop), the current and voltage regulator VDC are also presented. The simulation results demonstrate the ability of the proposed control systems to control the energy flow, ensuring a good transfer of all maximum power to the grid.

Powering Multiple Gas Condensate Wells in Russia’s Arctic: Power Supply Systems Based on Renewable Energy Sources

Abstract: Using renewable energy off-grid power supply and choosing the right equipment that meets the operating conditions in the Arctic can provide companies with reliable power sources for producing gas at facilities located in remote areas and will reduce capital and operating costs associated with the construction of power transmission lines. For more than 15 years, a remote control system powered by renewable energy has been used in parallel with power transmission lines by Gazprom to operate its multiwell pads in Russia’s Far North, which validates the relevance of this study. The subject of the study is a group of gas condensate wells that consists of four multiwell pads operated by Wintershall Russland GmbH. The article discusses a stand-alone renewable-based power system as an option for powering remote oil and gas production facilities. The procedures used in the study include calculating such parameters as power output and power consumption, choosing equipment, describing the design features of a power supply system for a multiwell pad, conducting an economic assessment of the project, comparing different power supply options, analyzing project risks, and developing measures to mitigate these risks.

Modeling Dependent Outages of Electric Power Plants

Abstract: We propose a novel framework to model dependence of outages of electricity power plants. Our framework allows for commonality in outages to be driven by weather events and fuel shortages. We calibrate our model for power plants in the Electric Reliability Council of Texas and the Western Electricity Coordinating Council regions using a unique dataset of actual outages that we obtained from the North American Electric Reliability Corporation. We find strong evidence of dependence in power plant outages both system-wide, and based on the input fuel of the plants. We illustrate the consequences of outage dependence on the reliability of electricity supply for both regions and evaluate policy implications; e.g. the impact of building additional capacity.

Simulation and Management Strategy of Energy Flow in Hybrid System

Abstract: This paper presents a control algorithm based on energy dispatch strategy in a remote area of Niger in West Africa region. . The system is a micro grid equipped with solar panels, conventional source and energy storage units. The hybrid energy management system presented is meant for rural and remote area power supply. The hybrid system configuration focuses on providing an uninterrupted power supply the maximum loads energy demand. This approach can improve the living conditions through the increase the economy and easiness of access to energy through a reasonable cost from an economic point of view to avoid over-sizing of production sources. The optimal configuration and model details of the proposed hybrid energy system has been described. The aim of this paper was to improve the design, operation and control requirement of a hybrid system in a specific area of Dakoro in Niger. The proposed control energy flow management strategy has been brought out by performing experimental studies on a laboratory prototype.