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The increasing penetration of renewable generation for decarbonising the power sector leads to important techno-economic challenges for grid-stakeholders. Many Latin American countries are already fed from high-levels of renewable sources which requires innovative measures for maintaining the stability and safety of their systems. Solar Farms, in particular, present a unique behaviour with fluctuating...
The emerging potential of distributed generation (DG) is feasible to be conducted through microgrids implementation. A microgrid is a portion of the electrical system which views generation and associated loads as a subsystem, with the ability to operate both grid connected or islanded from grid, thus maintaining a high level of service and reliability. The existing grid infrastructure, the distributed...
The ever-growing connection of distributed renewable generators is causing important modifications of the standard power flows and is increasingly challenging the operation of the electrical distribution network. In this light, electrical storage systems (ESS) will be key attributes for future grids that accommodate massive penetration of renewable plants. In this paper, the possibility to consider...
This paper investigates the energy management problem for multiple self-interested users, each with renewable energy generation as well as both the fixed and controllable loads, that all share a common energy storage system (ESS). The self-interested users are willing to sell/buy energy to/from the shared ESS if they can achieve lower energy costs compared to the case of no energy trading while preserving...
This paper addresses the issue of selecting architecture of smart grid that can be used so as to test applications and uses cases related to services. Most existing architectures are based on the NIST conceptual model that defines seven high-level domains (Bulk Generation, Transmission, Distribution, Customers, Operations, Markets and Service Providers), which is not suitable with recent progress...
Increasing use of intelligent devices in smart grids inevitably brings along the possibility of a cyber-attack These attacks can be targeted at not only control equipment but also measurement and communication instruments. Impediment of intelligent electrical devices (IEDs) due to attacks in cyber systems is a highly probable event which reveals the delicate operation required in Cyber-Physical Systems...
In this paper, an entire formulation of a multiperiod optimal power flow is presented. The standard timeindependent AC Optimal Power Flow (AC-OPF) includes voltage, line capacity and generator limits for each time step. Additionally, time-dependent constraints like generator rampings, stored energy or energy contracts are crucial for time constrained optimization. A comparison of methods for modeling...
Expanding distributed generation systems, advancing energy storage options and innovative approaches in the area of demand management open new doors in grid operation. Grid-responsive devices can be considered as Distributed Energy Resources (DERs) and used to form Virtual Power Plants (VPPs). Because the aim is to benefit from many assets that have individual primary tasks and operational constraints,...
The smart grid is a new and improved power grid that seems to have all the solutions to our energy problems. The technology for the smart grid is still in the research and development phase but it is rapidly growing. There are many opportunities to be taken advantage of when talking about the smart grid. The possibility for the seamless integration of renewable energy resources and ushering in a new...
Modern electricity supply and distribution systems are evolving to integrate communications technologies and intelligent devices into what is broadly known as a Smart Grid. One area of Smart Grid development is the encouragement of a Smart Home where local electricity generation, storage, intelligent thermostats and electric vehicles can interact with home owners and the Smart Grid. This paper describes...
Future power networks will include various local sources (LS)s as alternatives to centralized power generation in sustaining local loads. The cost of electrical power at LSs depends on the specific kind of the source, e.g., operating on renewable energy, using energy storage equipments, being a fuel cell, etc. In general, the cost will be proportional to the provided active power. In this paper we...
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