This paper presents an optimal power management mechanism for grid connected photovoltaic (PV) systems with storage. The objective is to help intensive penetration of PV production into the by proposing peak shaving service at lowest cost. structure a supervisor based on predictive scheduling algorithm proposed. Optimization performed using Dynamic Programming and compared simple ruled-based management. particularity this study remains first in consideration batteries ageing optimization...

This paper investigates the issues of ensuring global power optimization for cascaded dc-dc converter architectures photovoltaic (PV) generators irrespective irradiance conditions. The optimum such connections PV modules is generally equivalent with performing maximum point tracking (MPPT) on all modules. most important disturbance occurs when levels happen to be sensibly different from a module another - in this case, voltage-limitation requirements may broken. proposed supervisory...

HVdc grids are a promising alternative for the expansion of existing ac grid. They interesting integration large-scale renewable energy sources, connecting high power offshore windfarms, interconnecting new market areas, including asynchronous and off-grid communities, they can even provide ancillary services to system. It is expected create more reliable flexible transmission grid using grids. However, their development will require, among other technologies, dc-dc conversion systems....

The microgrid vision contains several aspects, and a commonly admitted one is portion of grid with its own means production energy flow controls. Photovoltaic (PV) generation geographically the most distributed electricity production. In this sense, integration PVs in microgrids seems natural. intermittency PV can be compensated not only by using storage technologies but also demand-side management exchanges other power networks: main surrounding microgrids. Many aspects still have to...

This paper deals with the problems of Plug-in Electric Vehicles charging costs in housing sector. A review optimal strategies is proposed and as such six algorithms are presented: three smart unidirectional bidirectional where Vehicle-to-Grid (V2G) Vehicle-to-Home (V2H) concepts were exploited. In addition an innovative V2G algorithm named Optimal Logical Control (V2G-OLC) introduced this paper. latter dedicated to French energy billing system within peak/base hour's contract. All tested...

Photovoltaic applications worldwide have reported problems with shading. Passing clouds, the moving shade of a neighbor's chimney or nearby tree, can completely compromise power production such plants despite their size sophistication. In order to address this issue, paper makes an exhaustive study available interconnections among modules shaded photovoltaic field and how they impact production. As result, clear relationship between PV output is proposed through empirical connection laws.

The article tackles the issues related to identification of electrical appliances inside residential buildings. Each appliance can be identified from aggregate power readings at meter panel. possibility applying a temporal multilabel classification approach in domain nonintrusive load monitoring is explored (nonevent-based method). A novel set metafeatures proposed. method tested on sampling rates based capabilities current smart meters. proposed validated over dataset energy residences for...

Control structures and strategies have a critical influence on power electronic converter's behavior during disturbances. Most of the previous works in field pulsewidth modulation voltage-source converter (VSC) operation under unbalanced conditions propose dual vector controllers with dc bus voltage optimization strategies, which been proven to be well adapted for rectifier applications. In this paper, two major contributions are made. On one hand, new optimized strategy based exchanged...

A new method for voltage dips and swells analysis is presented in this paper.This based on the space vector representation complex plane zero-sequence voltage.Indeed, case of nonfaulted system voltages, follows a circle with radius equal to nominal voltage.It same shape balanced dips, but smaller radius.For unbalanced becomes an ellipse parameters depending phase(s) drop, dip magnitude phase angle shift.For not modified, though presents significant changes its can be used analysis.The are...

Rising demand for distributed generation based on renewable energy sources (RES) has led to several issues in the operation of utility grids. The microgrid is a promising solution solve these problems. A dedicated storage system could contribute better integration RES into by smoothing resource's intermittency, improving quality injected power and enabling additional services like voltage frequency regulation. However, due energy/power technological limitations, it often necessary use hybrid...

This paper proposes a distributed control scheme to regulate the power flows among multiple microgrids operating in islanded mode. Each microgrid controller gathers information from neighboring and reduces dynamic interactions. Modal analysis time-domain simulations are used identify critical issues that degrade stability of under different conditions. A case study comprising three interconnected is considered. includes generation described through detailed model. Time-domain analyses...

In the coming years, plug-in hybrid electric vehicles (PHEVs) will strongly penetrate French car fleet. Their impact on each element of distribution grid needs to be estimated. this paper, PHEVs life duration medium-voltage/low-voltage (LV) transformer using a thermal model estimate hot-spot temperature is studied. Based probabilistic algorithms, three penetration rates are A stochastic method applied construct domestic daily load profiles houses constituting an LV residential supplied by...

Energy storage systems (ESS) when integrated with large-scale photovoltaic (PV) plants, constituting a so-called Intelligent PV (IPV) power plant, are able to contribute improve the economic viability of these plants and help them participate in electricity markets as other traditional generators. In this paper, sizing control strategy co-optimization for an existing IPV plant is proposed implemented. A global linear programming (LP) optimization algorithm developed, where optimal components...

Large-scale fast-varying sinusoidal disturbances (FVSDs) strongly impact the operation of Grid-connected Converters (GcCs). A conventional extended state observer (ESO) is not sufficiently capable to deal with these rapid disturbances. This critical weakness has limited ESO's applications GcCs. Therefore, a generalized integrator-ESO (GI-ESO) developed from ESO address such issues. Knowing that grid common can be expressed as phase, frequency, or magnitude disturbed signal, multi-GIs...

As the total number of installed wind farms is far from being negligible, an upgrading their technology essential to fulfil new interconnection requirements. Power electronics are considered be a key accomplish this task. In paper use STATCOM for improvement ride-through capability fixed-speed analyzed. Critical aspects like rating and control A modified controller proposed, based on series combination power factor loop voltage regulation loop, which permits optimized behavior farm both in...

An innovative way for wind energy to participate in some sort of frequency control using kinetic stored the rotor a fast power reserve that could be delivered short period (from several seconds up few tens seconds) is presented. This kinetic-energy-based ensured despite speed variations – disoptimisation coefficient through modification set point or pitch control. In case drop, then increased produce more energy. approach help reduce dynamics and depth drops therefore allow farms Basic...