The insertion of dispersed generation into existing electric power systems has a great impact on real-time operation and planning. Several uncertainties characterize the ability system to integrate this form generation, Hence, must be taken consideration in performance so that security are not disturbed. Dispersed increases complexity controlling, protecting maintaining distribution systems. This article focuses some technical aspects, but quality supply tariff signals.

This paper deals with distribution network (DN) reconfiguration for loss minimization. To solve this combinatorial problem, a genetic algorithm (GA) is considered. In order to enhance its ability explore the solution space, efficient operators are developed. After survey of existing DN topology description methods, theoretical approach based on graph and matroid theories (graphic in particular) These concepts used propose new intelligent effective GA mutation crossover well dedicated...

The ability of using dispersed generation (DG) in the distribution system restoration service context smart networks is presented this paper. objectives are to reduce consequences due a major blackout terms out-of-service load volume, and duration process. Based on knapsack problem formulation network represented graph modeling, new procedure for proposed. An adapted branch-and-bound algorithm then used solve problem. It maximizes restored loads by DG availability. Simulation results study...

Smart energy and electricity networks are a crucial component in building smart city architectures; their consistent harmonized inclusion the design should be carefully considered through detailed analysis of impacts (environmental, energy, economic, societal) implementation cost benefit (CBA), not only terms managing grid itself but also wider perspective that includes environmental, security, social aspects. This paper first discusses main impact deployment has, different respects, cities...

In deregulated power systems, the distribution network operator (DNO) is not responsible for investment in distributed generation (DG) units, and they are just concerned about best architecture ensuring a good service quality to their customers. The operating decisions related DG units then taken by entities other than DNO which exposed uncertainty. should be able evaluate technical effects of these uncertain decisions. This paper proposes fuzzy evaluation tool analyzing effect operation on...

This paper presents a new method to determine viable load shedding scheme. scheme the system operator location and amount of be shed avoid voltage collapse. In order develop such in timely fashion, indicators are developed assess risk collapse at particular bus, sensitivity matrix coupling indicator is computed. The takes into account nonlinearities caused by generators reaching their limits reactive power output. advantages proposed network security, short computing times low memory...

This study proposes a probabilistic dynamic model for multi-objective distributed generation (DG) planning, which also considers network reinforcement at presence of uncertainties associated with the load values, generated power wind turbines and electricity market price. Monte Carlo simulation is used to deal mentioned uncertainties. The planning process considered as two-objective problem. first objective minimisation total cost including investment operating DG units, paid purchase energy...

In order to manage distributed generation and enhance its valorization within electrical distribution systems, the concept of virtual power plant (VPP) has emerged is used by many research teams worldwide. It consists in aggregating various small size generating units form a ldquosingle unitrdquo that can behave as conventional one. Such under development EU project FENIX. Two types aggregation are considered FENIX project: commercial (CVPP) tackles with respect market integration technical...

In deregulated power systems, distribution network operators (DNO) are responsible for maintaining the proper operation and efficiency of networks. This is achieved traditionally through specific investments in components. The event distributed generation (DG) has introduced new challenges to these role DG units must be correctly assessed optimise overall operating investment cost whole system. However, owners (DGOs) have different objective functions which might contrary objectives DNO....

In this paper, an accurate fault location algorithm for series compensated power transmission lines is presented. A distributed time domain model used modeling of the lines. The makes use two subroutines estimation distance-one faults behind capacitors and another one in front capacitors. Then a special procedure to select correct solution utilized. Samples voltages currents at both ends line are taken synchronously calculate fault. proposed independent resistance does not require any...

This paper studies the application of distributed and centralized solutions for voltage control in low (LV) grids with high photovoltaic (PV) penetration. In traditional LV grids, coordination PV converters a device would require massive investments new communication infrastructures. The alternative exploiting is discussed, showing that it can help to stabilize grid connection points also without between them and/or unit. goal this investigate how setup controllers inside inverters affects...

This paper demonstrates the effectiveness of a novel, robust four-input/four-output controller that takes into account input signal delay through application on 4- and 29-machine test systems. The proposed centralized was developed for wide-area applications, where issues maximum power flow quality are important. algorithms in this work based linear matrix inequalities to tuning optimization problem.

Low-frequency oscillations are detrimental to the goals of maximum power transfer and optimal system security. A contemporary solution this problem is addition stabilizers automatic voltage regulators on generators in system. The damping provided by additional stabilizer provides means reduce inhibiting effects oscillations. novel modification controller inclusion feedback loop information from a remote source. In manner, acts changes local source As demonstrated, yields capable more rapidly...

Utility power systems are faced to an increasing number of small size producers requiring interconnection particularly the low voltage (LV) network. Since most distribution not designed "receive" large scale injections, these generation units may impact networks specifically in terms quality energy delivered, reliability and safety whole system from LV medium (MV) levels. In this paper, a methodology, based on parametric study, is proposed investigate distributed (DG) impacts when...

Presently, there is a poor knowledge about the coupled systems and their interdependency. Failures caused by cascade effects are increasing operators' do not know how to control adequately negative consequences on systems. At same time, critical infrastructures due relevance potential targets of outlaw groups, ill- disposed people, terrorist groups. The modeling may lead an evaluation power system security could help asses impact cascading effect between ICT Power Grid. By consequence, it...

Distribution networks will experience a deep mutation concerning their planning and operation rules due to the expected increase of distributed generation (DG) interconnection grid. Indeed, opening electricity market or growing global concern for environmental issues lead massive development DGs. Yet, too large amount DGs could raise technical problems on distribution which have not been planned operate with bi-directional power flow. The existing solutions solve marginal DG connections be...

Motivated by the concerns about climate change, energy-harvesting technologies have recently gained particular interest to support growing power demand of cellular networks. The environment-friendly sources coupled with batteries enable significantly reduce carbon emissions as well electricity bill mobile network operators (MNOs). However, incautious battery usages can heavily damage storage capabilities and require large expenses for replacement. To investigate this tradeoff, we propose an...

Inverter-based resources (IBRs) are changing the dynamics of medium-voltage distribution grids (MVDGs), leading to concerns over slow-interaction converter-driven stability (SICDS). Although researchers have proposed numerous device-level solutions for IBR stability, culminating in promotion grid-forming (GFM) as opposed grid-following (GFL) inverters, a system-level analysis from point-of-view system operator (DSO) is still lacking. As first step toward standardization, this article...