renewable power system Articles
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Control and protection of distribution systems with distributed generators
Unquestionably, in the last years, the number of generators connected directly to electric power distribution systems has increased. In addition, the main statistics and signals show that such tendency could become even more intense in the coming years. As a consequence of this policy, many technical factors related to control, protection, operation and analysis of distribution systems should be ...
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Design of an autonomous renewable hybrid power system
This paper presents the development of an optimisation model for the design of an autonomous solar-wind hybrid system in combination with battery bank and diesel generator. The performance of solar and wind system is evaluated using new practical mathematical models, in combination with hourly measured meteorological data. Loss of power supply probability technique is used as a key system ...
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Design and Development of a Renewable Cooling and Power Generation Systems
The key objective of this project is to address the unfulfilled demand for power and cooling in remote, rural, and un-electrified areas and to enhance overall socio-economic conditions through delivery of electricity and improved cold storage facilities using renewable energy. This project seeks to design, develop, and fabricate a number of prototypes with integrated renewable heating and cooling ...
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Increasing of the quality of energy from stochastic fluctuating sources using dynamic power conditioning
The stochastic fluctuating offer of wind energy limits the capacity of supply in electrical grids for technical and economical reasons. To increase the supply, a concept of dynamic conditioning with the objective of increasing the quality of supply was developed. The concept envisages supporting and managing the electrical grid, respectively by compensating of active and reactive power with ...
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Managing Battery Charging - Using Diversion Loads
Tcharge regulation can be relatively simple: When the I-'1/batteries are full, the controller disconnects the PV r array. Adding wind or microhydro to the system makes charge regulation more complicated, since turbines may overspecd if unloaded. Often, diversion control is the solution. Off-grid "hybrid" combinations of solar, wind, or microhydro have been around for decades. These renewable ...
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Adiabatic compressed air energy storage plants for efficient peak load power supply from wind energy: the European project AA-CAES
With the continuing expansion of electricity generation from fluctuating wind power the grid-compatible integration of renewable energy sources is becoming an increasingly important aspect. Adiabatic compressed air energy storage power plants have the potential to make a substantial contribution here. The present article describes activities and first results relating to this technology that are ...
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The Age of Renewable Power – New IRENA Guide to the Future of Energy
A new report from the International Renewable Energy Agency (IRENA) aims to assist countries in their transition to renewable energy-based power systems. The Age of Renewable Power, released today on the sidelines of the Innovation for Cool Earth Forum in Tokyo, identifies 20 measures that can be taken to support the development of national roadmaps to integrate variable renewables. It also ...
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Danish and Dutch wind energy policy 1970–2000: lessons for the future
Both in the Netherlands and in Denmark, policies to develop a wind turbine industry and to install a large wind turbine capacity were started in the 1970s. However, the outcomes of these policies were very different. A flourishing wind turbine industry developed in Denmark, whereas in the Netherlands, a few companies started building wind turbines in the 1980s and 1990s, but presently no wind ...
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Power plants coordination for economic and environmental load dispatch of thermal power plants with wind generation systems
Economic load dispatch (ELD) and economic emission dispatch (EED) have been applied to obtain generation scheduling of thermal power plants at optimum fuel cost and emissions. Due to limited availability of quality coal, issue of environmental emissions and high prices of coal, installation of renewable energy systems are suggested in power grid. Renewable energy system preferably wind generators ...
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Transformational low carbon subsea project showcased at industry event
A successful showcase of the renewable remote power and communications system for the Renewables for Subsea Power (RSP) project was held this month in Dyce, Aberdeen. Hosted by Verlume and supported by project partners Baker Hughes, Mocean Energy and Transmark Subsea AS, the event was an opportunity for around 30 invited guests from across the subsea sector to see the onshore commissioning of ...
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Structure-preserving dynamical model and distributed stabilisation of electricity infrastructures with renewable energy resources
This paper introduces a module-based approach to modelling and controlling electricity infrastructure with a high penetration of distributed renewable energy resources. Each energy-converting component is defined as a module and is represented in terms of its local variables and the interaction variables between the module and the transmission network. The structure of the electricity ...
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How an Uninterruptible Power Supply Supports Pharma 4.0
A reliable, continual power supply is critical to any industrial process to prevent costly interruptions. But nowhere is it more critical than in a sterile environment that handles aseptic / Biological manufacturing. An interruption can lead to discarding entire batches of products, potentially costing producers hundreds of thousands of dollars. That’s why an industrial uninterruptible ...
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To innovate in the electrical distribution sector, we must find sparks of inspiration
Electrical distribution can be easily overlooked in daily life. It’s out of sight and mind – electrical equipment is concealed within unassuming metal boxes and substations, while transmission lines run under our streets or are suspended above them. It can be easy to forget that distribution is a crucial element of our electrified world, a fact we are reminded of when the lights go ...
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Power management policies and control of hybrid electric vehicle
With increasing concern over the environment and ever-stringent emission regulations, the use of hybrid electric vehicle (HEV) is being investigated as an alternative form of transportation. A hybrid vehicle combines the advantages of an electric drive and an internal combustion engine. This paper proposes the necessary hardware and software needed for an effective control of the electrical part ...
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Hydrogen production on Utsira
The hydrogen plant on Utsira has started producing electricity. This means that the 10 households in the island community west of Karmøy are one step closer to becoming a selfsufficient hydrogen society. From the summer, 10 of the households on the island of Utsira will get all their electricity in the form of renewable energy. This is the world's first full-scale autonomous renewable ...
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A frequency control method for isolated photovoltaic-diesel hybrid power system without smoothing renewable power variations
In this paper, a frequency control method is introduced for photovoltaic-diesel hybrid system by using a load estimator and an energy storage system. The proposed method is compared with an energy storage based conventional control method and with a fuzzy based frequency control method. Simulation results show that the proposed method is feasible to reduce the frequency deviations of the isolated ...
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Dynamic validated model of a DFIG wind turbine
This paper presents the development and qualitative validation of a doubly-fed induction generator (DFIG) wind turbine model that is represented in terms of behaviour equations of each of the subsystems, mainly the turbine rotor, the drive train, the induction generator, the power converters and associated control systems and a protection system. Simulation results obtained from the models are ...
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Solar thermal power plants for the Spanish electricity market
Solar thermal power plants are at present the cheapest technology for solar electricity production. At good sites Levelised Electricity Costs (LEC) of 11 Ct/kWh have been achieved in commercially operated power plants. Economy of scale and further technical improvements will reduce the LEC for future projects. On the 27th of March 2004 in Spain the existing feed-in-law has been modified in order ...
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Simulating real-time load management to maximise wind energy supply within a liberalised electricity market ? Irish case study
The realisation of two key energy policy goals pose significant challenges for power systems operation and control, namely electricity market liberalisation and increased penetration of renewable energy. This paper uses a case study analysis to explore solutions to these new challenges. The focus is on simulating real-time load management to maximise wind energy supply to a local authority ...
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Energy technologies for rural areas ? decentralised power generation through MARKAL modelling: a case study
Due to shortage of power, extremely subsidised tariffs, poor financial recovery, long transmission lines, there exists a very poor demand-supply balance in the rural energy sectors of India. MARKAL bases analysis of a village-group in western India reveals that there is a potential of reducing the electricity demand by about 18% as compared to the business-as-usual case through adopting energy ...
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