Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 25 for “"transmission grid"”.
-
Recommended protection scheme setting coordination for nine busbars transmission grid
… realizes some requirements. For protection of transmission line three stepped distance protection can provide remote backup protection to transmission line by zone 2 and zone 3, but during the calculation of operation setting for different protection zones of the distance relays, some problems …
-
Transmission grid strength analysis and operation of inverter-based microgrids
… For this reason, this work focuses on evaluating transmission system strength and operation of microgrids with inverter-interfaced resources. The strength of the transmission grid with large wind farms is investigated based on the voltage phase angle stability. A novel approach for evaluating the …
-
Transmission grid expansion constraints in Uganda : going beyond the standard solution
This dissertation proposes the use of different transmission technology options as demonstrated elsewhere and quality decision making to minimize constraints faced by transmission grid expansion. In contrast to traditional planning that assesses alternative planning solutions by finding a solution …
-
Internet-based Wide Area Measurement Applications in Deregulated Power Systems
… called upon utilities to develop the Regional Transmission Organization (RTO). The RTO is a step toward the national transmission grid. RTO is an independent entity that will operate the transmission system in a large region. The main goal of forming RTOs is to increase the operation efficiency …
-
Electricity Market Pricing, Risk Hedging and Modeling
… complexity of the power market and size of the transmission grid make it difficult for market participants to efficiently analyze the long-term market behavior. We propose a simplified power system commercial model by simulating the PTDFs of critical transmission bottlenecks of the original …
-
Adaptive out of step relay algorithm
… power company's extra high voltage (EHV) transmission grid and the rest of the country behave as a two machine system for the following two types of disturbances loss of a large generator in the southern region of the peninsular power company faults on the 500 kV interconnections between …
-
Grid Strength Assessment Trough Q-V Modal Analysis and Maximum Loadability of a Wind-Dominated Power System Using P-Q Regions
… by deploying large-scale wind farms into their grids. Among them, wind energy shows a promising future to substitute the traditional power plants. However, the deployment of these wind farms into the grid is not a panacea that does not pose any challenges to the grid operators. Keeping the power …
-
Inference, estimation, and prediction for stable operation of modern electric power systems
… real time data emerging from modernizing smart grids. For each method, we provide simulated test results from IEEE benchmark systems. Newly deployed Phasor Measurement Units (PMUs) are observing the presence of detrimental low frequency forced oscillations (FOs) in transmission grid networks. To …
-
Aspectos do desempenho operativo de redes elétricas com inserção de geração fotovoltaica
… generation. Therefore, a distribution grid was proposed by combining a medium and low voltage systems and also, by adding distributed photovoltaic generation at the low voltage grid. Furthermore, the IEEE 39 bus system was chosen for the transmission grid studies, also by adding central …
-
Geophysical and industrial requirements of large scale rollout of concentrating solar power (CSP) in South Africa
… of CSP followed by an investigation into the transmission grid requirements. Recommendations are drawn up of possible grid expansion options followed by a comparison of current national expansion plans. Energy storage was pinpointed as being a key to the large scale uptake of CSP where …
-
Value chain concept for power electronics based products
… automation may trigger a technological change in grid infrastructure, away from electromechanical products and towards more flexible power electronics based products. Maschinenfabrik Reinhausen (MR), a premium manufacturer for specialized components and equipment for the electrical distribution …
-
Real-time validation of power system transient stability simulation results
… of generation, loss of a large load, or fault on transmission facilities. Currently, there are state estimator models used in simulating the transient stability response of large systems in the U.S. to disturbances. This research project studies the transient stability models used in simulating a …
-
Load Flow Study for Utility-Scale Wind Farm Economic Operation and Reactive Power Grid Compliance
… utility-scale and provide clean energy to the grid. Wind energy consists of many distributed wind turbines that are paralleled and connected to inject power to one location on the transmission grid. There are real power losses and reactive power drops that must be taken into consideration for …
-
Decentralized optimization approach for power distribution network and microgrid controls
The smart grid vision has led to the development of advanced control and management frameworks using distributed generation (DG) and storage resources, commonly referred to together as distributed energy resources (DERs). Albeit environment-friendly, these DERs in distribution networks including …
-
Decarbonizing the European electricity sector
… for renewable energy sources (RES) and transmission grid expansions; and the equilibrium model ELCO combines the insights of the individual sectors to a combined CCTS and electricity investment and dispatch model. Modeling results show that an investment in CCTS is beneficial for the …
-
Brachiating power line inspection robot: controller design and implementation
The prevalence of electrical transmission networks has led to an increase in productivity and prosperity. In 2014, estimates showed that the global electric power transmission network consisted of 5.5 million circuit kilometres (Ckm) of high-voltage transmission lines with a combined capacity of 17 …
-
Distributed and decentralized control of the power grid
… follow a chain of command from the top layer (transmission grid) to the bottom layer (distribution grid). At the distribution grid layer, certain local problems can be solved without the intervention of the top layers. A reactive load control optimization algorithm to improve the voltage …
-
A dynamic knowledge graph approach for studying the decarbonisation of power systems
… (SMR) sites, balancing objectives of minimising transmission losses and population risk. The framework was implemented in the UK power system, populating its data into the knowledge graph and instantiating two transmission grid models. A case study explored clean energy transition in the UK using …
-
Federal giants and wind energy entrepreneurs: utility-scale windpower in America 1970-1990
… and delivering windpower to the nation's transmission grid challenged the utilities' financial control. But participants in the windpower story have constructed a version of windpower largely compatible with the electric system. The most notable products of the FWEP--multi-megawatt wind …
-
Ökoeffizienz von Flexibilisierungsmaßnahmen in Energieversorgungsnetzen unter Berücksichtigung der Integration von Windenergie
… to an export of surplus wind power from local grids to the transmission grid and by this to distant areas, and as neither the existing distribution grids nor the transmission grids were set up for today’s requirements, the application of flexibility measures becomes vital. The required grid …
Page 1 of 2