This paper describes the philosophy and implementation of a preventive control algorithm for application in power system dynamic security assessment. The methodology consists an optimization procedure where: objective function takes into account economic costs; inequality constraints confine trajectory practical domain state space; equality derive from discretization differential-algebraic equations sparse representation. has been implemented to reschedule generation order guarantee...

Lightweight design is a common way of reducing mass while enhancing the performance mechanical components. The paper proposes method to analyse substitution bulk volume with optimised lattice structures. approach considers an early DoE analysis explore space, Finite Element Analysis evaluate feasibility possible solutions, and Artificial Intelligence tools look for optimal including Genetic Algorithms Response Surface Methods. To validate methodological approach, this work optimisation...

Metal Additive Manufacturing is quite expensive and very different from traditional schemes. The possibility of realizing lightweight products with free-form shapes increases the interest in this technology industry. main limitations widespread concern high cost materials 3D printers, necessity post-processing activities. generally claims design constraints if compared to manufacturing technologies. improvements Printing are increasing practices Manufacturing. workflow for includes tools...

A parallel method for the transient stability simulation of power systems is presented. The trapezoidal rule used to discretize set algebraic-differential equations which describes problem. Block-Newton relaxation technique solve overall algebraic concurrently on all time steps. parallelism in space problem also exploited. Furthermore, parallel-in-time formulation change steps between iterations by a nested iteration multigrid technique, order enhance convergence algorithm. has same...

In this paper, a dynamic oligopolistic market model is proposed to analyze the new competitive electricity environment. The developed on basis of well-known Cournot for analysis noncollusive and it able describe behavior such type market, revealing how suppliers affects each other's profit maximization. particular, reaction functions, isoprofit curves, characteristic sharing are evaluated, considering system's total load demand that takes into account presence transmission losses, calculated...

In the paper, nondeterministic nature of electric-power-system parameters has been taken into account to draw stability limit curves on a capability chart. The results look interesting, from practical point view, and show that deterministic model is unrealistic when system operating near its dynamic limit. this case, probabilistic approach most feasible alternative. statistics locations eigenvalues in complex plane have also evaluated

The challenges posed by flexible limp fabric material handling within automated manufacturing processes are addressed in this paper.With lightweight materials, particularly fiber composites, gaining prominence across industries, the need for effective and precise placements is deemed crucial.Traditional gripping methods often found to be lacking addressing complexities of draping, necessitating innovative solutions.The deformable, delicate, complex nature combined with intricate mold surface...

Additive manufacturing allows the creation of geometries otherwise impossible to achieve through traditional technologies in mechanical components. These can be obtained using algorithms optimize mass distribution. Topology Optimization are one tools most applied design for additive and lightweight engineering. optimization techniques require Finite Element Method evaluate compare behavior different geometrical solutions. The results closely related boundary conditions, objectives,...

In this paper a neural network-based methodology is proposed to develop load shedding schemes for industrial power systems. For given post-disturbance scenario, an appropriate architecture of several networks suggests the nets necessary provide requested load-shedding action. It assumed that, depending on type contingency and pre-disturbance network configuration, scenario can involve islanding entire system or decomposition into subsystems. Depending current generation-load mismatches each...

The paper proposes a new and practical procedure which, by operating on the complete linearised mathematical representation of an interconnected power network, is capable extracting accurate models selected portions system. approach useful for analysing dynamic or small disturbance stability portion interest without carrying out full-scale detailed analysis whole Furthermore, suggested method can be used to realise selective near-optimal excitation control scheme decentralised type network....

Energy market opening, with higher net utilization, and increasing competition are urgently requiring a solution to strongly limit loop flows. This paper presents an approach manage flow problem in liberalized power systems. methodology, which involves implementation of FACTS devices, also applies network reduction models towards the real networks. A UPFC model, derived from injection is described implemented network, results both equivalent system commented upon explained.

A generalized method for simultaneous fault analysis in an electrical power system is proposed this paper. The based on the admittance-type representation of power-system sequence networks. After defining suitable boundary conditions series faults terms bus quantities, reduced negative and zero equations at faulted buses are determined. Then, a simple procedure suggested obtaining augmented positive admittance matrix system. proves useful to analyze any combination without limit number, type...

The change of the generation pattern in today's electricity markets results more frequent network congestions, which limit free market activities. Therefore, a preventive recognition congestions and application corrective measures are essential for both system trading operation. paper presents new tools, used on day-ahead basis to face congestion problems. For correction critical situations an algorithm is described, includes systematic use FACTS devices (e.g. UPFC). required set-point...

In this paper, a methodology to simulate the strategic behavior of generating companies in an oligopolistic electricity market is proposed. contest, each firm sharing does not bid at marginal cost as it perfect competitive market, but profit-maximizing strategies are carried out. developed methodology, general case asymmetric oligopoly analyzed and producers investigated, assuming linear supply functions. Moreover, proposed allows presence private contracts, set up contracts for difference...

A new approach based on fuzzy reasoning is proposed for electricity service restoration in a distribution system following fault to minimise the out-of-service time area with no overloaded components. An emergency heuristic plan was determined restore service. proper short and long term using typical hourly load patterns real-time metering of loads order reach minimum time. ENEL considered illustrate potentials suggested approach. The procedure can be easily integrated existing dispatching...