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Impact Of Optimally Placed Var Support On Electricity Spot Pricing, Ramesh Kumar V. Khajjayam
Impact Of Optimally Placed Var Support On Electricity Spot Pricing, Ramesh Kumar V. Khajjayam
Graduate Theses, Dissertations, and Problem Reports
In view of deregulation and privatization processes, electricity pricing becomes one of the most important issues. The increases in power flows and environmental constraints are forcing electricity utilities to install new VAR equipment to enhance network operation. In this thesis a nonlinear multi-objective optimization problem has been formulated to maximize both social welfare and the maximum distance to collapse point in an open power market using reactive support like Static Var Compensator (SVC). The production and consumption costs of reactive power are intended to provide proper market signals to the electricity market agents. They are included in the multi-objective Optimal …
Economic Evaluation Of Air Pollution Reduction Of Phase I Power Plants In West Virginia: An Output Distance Function Approach, Huilan Li
Graduate Theses, Dissertations, and Problem Reports
Air pollutants from coal-fired power plants are nonmarket environmental bads. Title IV of the 1990 Clean Air Act Amendments (CAAA) sets the stage for the dirtiest power plants to reduce emissions of SO2 and NO x in two phases. Title IV allocates plants SO2 allowances as a variation of "pollution rights" based on averaged historical emission levels and allows free-trade of allowances. This is the world's first large scale pollutant trading market. Trading allows for improved efficiency, flexibility, and reduced pollution.;This study employs the output distance function approach to evaluate the pollution reduction behavior and efficiency of West Virginia power …
Measurements Of The Electrical Properties Of Coal Measure Rocks, Nikolay D. Boykov
Measurements Of The Electrical Properties Of Coal Measure Rocks, Nikolay D. Boykov
Graduate Theses, Dissertations, and Problem Reports
Subsurface imaging technologies are part of the electromagnetic (EM) geophysical methods. EM technologies such as radio imaging method (RIM), ground penetrating radar (GPR), and drill string radar (DSR) have great application potentials in the mining industry.;However, the success for applying the EM methods to subsurface observations is largely dependant on the correct evaluation of the electrical properties (e.g., wave attenuation rate and dielectric constant) of the rocks in the domain of interest. Study of the electrical properties of rocks was performed in order to gain better understanding about their variations across the country. The study was done specifically for rocks …
Productivity Index Of Multilateral Wells, Upender Naik Nunsavathu
Productivity Index Of Multilateral Wells, Upender Naik Nunsavathu
Graduate Theses, Dissertations, and Problem Reports
In the history of petroleum science there are a vast variety of productivity solutions for different well types, well configurations and flow regimes. The main well types that were considered for calculating the productivity indexes were vertical wells and horizontal wells. The configurations considered were multilayer perforations, dual lateral wells with laterals at same depths, stacked wells etc. There are few solutions to estimate the well productivity for complex configurations like multilateral wells.;The main objective of this work is to identify a numerical solution method for calculating productivity indexes for different well configurations like single vertical well, single horizontal well, …
Geomechanical And Weathering Properties Of Weak Roof Shales In Coal Mines, Hakan Gurgenli
Geomechanical And Weathering Properties Of Weak Roof Shales In Coal Mines, Hakan Gurgenli
Graduate Theses, Dissertations, and Problem Reports
Many coal seams have weak shale immediate roofs that cause ground control problems. Therefore, it is important to know the mechanical properties of these shales so that preventive measures can be developed in advance. However, it is sometimes hard to understand this rock type due to its unpredictable behavior. A good example of this situation is found with the shale roof strata in two coal mines located in the Illinois coal basin---Herrin No. 6 seam. Although these mines are located very close to each other, one of them has many roof falls, whereas the other has no measurable ground control …
The Effect Of Reservoir Characteristics On Methane Production From Hydrate Bearing Formations, Sachin Gandra
The Effect Of Reservoir Characteristics On Methane Production From Hydrate Bearing Formations, Sachin Gandra
Graduate Theses, Dissertations, and Problem Reports
Demand for natural gas is ever increasing and according to DOE [1], by 2040, 10 Tcf/yr of gas has to be imported. Interest in the potentially large deposits of natural gas hydrates and hydrate capped gas reservoirs is increasing because a conservative estimate of gas hydrate reserve potential of US exclusive economic zone is 200,000 Tcf [2, 3]. If 1% of this were recovered, that would be greater than the cumulative gas reserves of conventional gas sources (1000-1500 Tcf). Even 1% production of this recovered gas per year would make USA the exporter of gas.;Gas hydrates are solid, crystalline ice …
The Impact Of Relative Permeability On Type Curves For Coalbed Methane Reservoirs, Sunil Lakshminarayanan
The Impact Of Relative Permeability On Type Curves For Coalbed Methane Reservoirs, Sunil Lakshminarayanan
Graduate Theses, Dissertations, and Problem Reports
Coalbed methane (CBM) is considered an unconventional gas resource produced from coal seams usually with low permeability at shallow depths. Analyzing the production performance in CBM reservoirs is challenging, especially at the early stages of recovery. Most of the small producers in the Appalachian Basin cannot afford personnel or meet economical requirements involved in the use of the numerical simulator to evaluate CBM reservoirs. Production type curves are an excellent tool for predicting the performance of CBM reservoirs. A set of type curves have been previously developed for horizontal and vertical wells in CBM reservoirs. The relative permeability characteristics have …
The Dissolution And Swelling Of Bituminous Coal In N-Methyl-Pyrrolidone, Joseph M. Stoffa
The Dissolution And Swelling Of Bituminous Coal In N-Methyl-Pyrrolidone, Joseph M. Stoffa
Graduate Theses, Dissertations, and Problem Reports
Research detailed herein examined the extraction and swelling of a bituminous coal in the super solvent n-methyl-pyrrolidone. Correlations were developed to describe the extraction and swelling observed in the coal-solvent system. These correlations describe swelling and extraction based on experimental parameters such as extraction time and extraction temperature. The research concluded that swelling and extraction may be related processes. The most significant result of the research was a proposed relationship between the rapidness of coal swell and the coal's solubility in the solvent. The research served as support for coal structure models and solvent extraction mechanisms published in peer reviewed …