The Experts below are selected from a list of 315 Experts worldwide ranked by ideXlab platform
Mahmood Moshfeghian - One of the best experts on this subject based on the ideXlab platform.
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economic evaluation of Natural Gas Transportation from iran s south pars Gas field to market
Applied Thermal Engineering, 2009Co-Authors: Hesam Najibi, Jafar Javanmardi, Kh. Nasrifar, Reza Rezaei, Mahmood MoshfeghianAbstract:Abstract The worldwide consumption of Natural Gas is rapidly increasing. To satisfy such a demand, there are some plans to transport Natural Gas from South-Pars Gas field, the largest Natural Gas field of Iran, to some energy consuming countries. There are several possible technologies for transporting Gas from production fields to consuming markets as Gas, including PNG (pipeline Natural Gas), LNG (liquefied Natural Gas), CNG (compressed Natural Gas) and NGH (Natural Gas hydrate). Gas transmission projects are sensitive to technology selection and depending on the capacity and distance; chosen technology may affect the economy of the entire project noticeably. In this work, transporting 100 × 106 standard m3/d Natural Gas from port of Assaluyeh in south of Iran to potential markets using alternative technologies such as PNG, LNG, CNG and NGH has been investigated. To do such a study, required processes for converting Natural Gas to desired product and then transporting it to market have been designed and using an economical model, cost of transporting Natural Gas as a function of distance, has been estimated. Results show for the investigated case, PNG has the lowest production cost for distances up to 7600 km and for larger distances, LNG has the lowest production cost.
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Natural Gas Transportation: NGH or LNG?
World Review of Science Technology and Sustainable Development, 2007Co-Authors: Jafar Javanmardi, Kh. Nasrifar, S.h. Najibi, Mahmood MoshfeghianAbstract:In this work, based on a process for conversion of Natural Gas to Natural Gas Hydrate (NGH), the amortised total capital investment, operation and maintenance costs and total cost for production of NGH are compared with those of the Liquefied Natural Gas (LNG) method. The economic parameters for marine Transportation of NGH and LNG from Asaluyeh port in south of Iran to different potential Gas markets, as a case study, have been obtained. Also, the required NGH and LNG ships and their operating costs for different Gas markets were obtained. It was found that the cost of transporting Natural Gas by LNG for the cases investigated in this work is cheaper than for the NGH method.
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Economic evaluation of Natural Gas hydrate as an alternative for Natural Gas Transportation
Applied Thermal Engineering, 2004Co-Authors: Jafar Javanmardi, Kh. Nasrifar, S.h. Najibi, Mahmood MoshfeghianAbstract:Based on a proposed process for conversion of Natural Gas to Natural Gas hydrate, NGH, the amortized total capital investment, operation and maintenance costs and total cost for production of NGH have been obtained. The effects of different operational conditions such as seawater temperature as cooling media and hydrate storage temperature have been investigated. The economic parameters for marine Transportation of NGH from Asaluyeh port in the south of Iran to the different Gas markets, as a case study, have been obtained. Also, the required NGH ships and their operation costs for different Gas markets have been estimated.
Michael A. Williams - One of the best experts on this subject based on the ideXlab platform.
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Interpreting concentration indices in the secondary market for Natural Gas Transportation: The implication of pipeline residual rights☆
Energy Economics, 2008Co-Authors: Michael J. Doane, R. Preston Mcafee, Ashish Nayyar, Michael A. WilliamsAbstract:Abstract In 1992, the U.S. Federal Energy Regulatory Commission created a secondary market for Natural Gas Transportation whereby shippers holding firm Transportation capacity on interstate Natural Gas pipelines can compete with the pipeline in the provision of Transportation services. However, if a shipper does not use some of its contracted firm Transportation capacity, the pipeline can resell that capacity as interruptible Transportation. That is, the pipeline has residual rights with respect to firm Transportation capacity contracted for by shippers. We demonstrate that these residual rights can have a significant effect on the competitiveness of the secondary market for Natural Gas Transportation. A consequence of these residual rights is that the secondary market for Natural Gas Transportation may be considerably more competitive than indicated by measures of concentration like the widely used Herfindahl–Hirschman Index.
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Evaluating and Enhancing Competition in the Interstate Natural Gas Transporation Industry
Natural Resources Journal, 2004Co-Authors: Michael J. Doane, R. Preston Mcafee, Michael A. WilliamsAbstract:In 1996, the Federal Energy Regulatory Commission (FERC) established criteria it uses when evaluating proposals for marketbased rates by Natural Gas pipelines. Since that time, a number of significant developments have occurred, both in markets for Natural Gas Transportation and in economic tools for marketpower assessment. This article will review the current approach for measuring interstate pipeline market power presented in the 1996 Policy Statement of the FERC and will critically evaluate that framework in light of these recent developments. We show that fundamental changes in the operation of Natural Gas Transportation markets and new developments in the economic analysis of market power suggest that the Commission’s methodology for assessing market power actually or potentially exercisable by pipelines seeking market-based rates is, as it currently stands, inappropriate and should be updated in light of new developments. As we discuss below, the Commission’s approach fails to account for a number of important factors potentially influencing a determination of market power. Consequently, the goals of this article are (1) to apply economically appropriate criteria to current Natural Gas Transportation markets in order to illustrate how to evaluate their competitiveness and (2) to demonstrate that improving the competitive assessment of pipelines competing in those markets could enhance consumer welfare.
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Evaluating and Enhancing Competition in the Interstate Natural Gas Transportation Industry
2004Co-Authors: Michael J. Doane, R. Preston Mcafee, Michael A. WilliamsAbstract:On both sides of the Atlantic, the regulation of Gas transmission networks has undergone major changes since the early 1990s. Whereas in the US, the long-standing regime of cost-plus regulation was complemented by increasing pipe-to-pipe competition, most European countries moved towards incentive regulation complemented by market integration. We study the productivity development of a panel of US interstate companies using data envelopment analysis and Malmquist productivity indices. Results are presented for changes in productivity, as well as for several convergence tests. The results indicate that taking productivity and convergence as performance indicators, regulation has been rather successful, in particular during a period where overall demand was flat. However, we argue that a benchmarking-based regulation might have brought about stronger convergence. Lessons for European regulators are twofold. First, the US analysis shows that benchmarking of European transmission operators would be possible if data were available. Second, our results suggest that, in the long-run, market integration and competition are alternatives to the current European model.
J. Milhinhos - One of the best experts on this subject based on the ideXlab platform.
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An LPV Modeling and Identification Approach to Leakage Detection in High Pressure Natural Gas Transportation Networks
IEEE Transactions on Control Systems Technology, 2011Co-Authors: Paulo Lopes Dos Santos, Teresa-p. Azevedo-perdicoúlis, José A. Ramos, Gerhard Jank, J.l. Martins De Carvalho, J. MilhinhosAbstract:In this paper a new approach to Gas leakage detection in high pressure Natural Gas Transportation networks is proposed. The pipeline is modelled as a Linear Parameter Varying (LPV) System driven by the source node massflow with the Gas inventory variation in the pipe (linepack variation, proportional to the pres- sure variation) as the scheduling parameter. The massflow at the offtake node is taken as the system output. The system is identified by the Successive Approximations LPV System Subspace Identification Algorithm which is also described in this paper. The leakage is detected using a Kalman filter where the fault is treated as an augmented state. Given that the Gas linepack can be estimated from the massflow balance equation, a differential method is proposed to improve the leakage detector effectiveness. A small section of a Gas pipeline crossing Portugal in the direction South to North is used as a case study. LPV models are identified from normal operational data and their accuracy is analyzed. The proposed LPV Kalman filter based methods are compared with a standard mass balance method in a simulated 10% leakage detection scenario. The Differential Kalman Filter method proved to be highly efficient.
Mohammad Shahidehpour - One of the best experts on this subject based on the ideXlab platform.
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integrated planning of electricity and Natural Gas Transportation systems for enhancing the power grid resilience
IEEE Transactions on Power Systems, 2017Co-Authors: Chengcheng Shao, Mohammad Shahidehpour, Xifan Wang, Xiuli Wang, Biyang WangAbstract:Power systems are exceedingly faced with extreme events such as Natural disasters and deliberate attacks. In comparison, the underground Natural Gas system is considered less vulnerable to such extreme events. We consider that the overhead power grid can be hardened by replacing segments of electric power grid with underground Natural Gas pipelines as an energy Transportation system to countereffect extreme events which can damage interdependent infrastructures severely. In this paper, an integrated electricity and Natural Gas Transportation system planning algorithm is proposed for enhancing the power grid resilience in extreme conditions. A variable uncertainty set is developed to describe the interactions among power grid expansion states and extreme events. The proposed planning problem is formulated as a two-stage robust optimization problem. First, the influence of extreme events representing Natural disasters is described by the proposed variable uncertainty set and the proposed robust model for the integrated planning is solved with the grid resilience represented by a set of constraints. Second, the investment decisions are evaluated iteratively using the conditional events. The integrated electricity and Natural Gas planning options are analyzed using the modified IEEE-RTS 1979 for enhancing the power grid resilience. The numerical results point out that the proposed integrated planning is an effective approach to improving the power grid resilience.
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Long-term expansion planning of integrated electricity and Natural Gas Transportation infrastructures
2015 IEEE Power & Energy Society General Meeting, 2015Co-Authors: Xiaping Zhang, Liang Che, Mohammad ShahidehpourAbstract:This paper presents an integrated long-term expansion planning model that considers the interdependency of Natural Gas and electricity infrastructures. The integrated planning problem determined the least-cost planning schedule of candidate generating units, transmission lines, and Natural Gas pipelines. The fuel supply feasibility was represented by the Natural Gas Transportation constraints. The Investment decisions of electricity and Natural Gas infrastructures would satisfy the desired power system reliability criterion. Numerical simulations demonstrate the effectiveness of the proposed integrated planning approach.
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Security-Constrained Co-Optimization Planning of Electricity and Natural Gas Transportation Infrastructures
IEEE Transactions on Power Systems, 2015Co-Authors: Xiaping Zhang, Mohammad Shahidehpour, Ahmed Alabdulwahab, Abdullah AbusorrahAbstract:This paper presents a co-optimization planning model that considers the long-term interdependency of Natural Gas and electricity infrastructures. The model incorporates the Natural Gas Transportation planning objective in the co-optimization planning of power generation and transmission systems. The co-optimization planning model is decomposed into a least-cost master investment problem for Natural Gas and electricity systems which interacts with two operation subproblems representing the feasibility (security) and the optimality (economic) of the proposed co-optimization. In addition, the Natural Gas subproblem would check the feasibility of fuel supply Transportation system as part of the proposed co-optimization planning. The co-optimization planning of electricity and Natural Gas infrastructures would satisfy the desired power system reliability criterion. The iterative process will continue between the co-optimization investment and the operation subproblems until an economic, secure, reliable, and fuel-supply feasible planning for the two interdependent infrastructures is obtained. Numerical simulations demonstrate the effectiveness of the proposed co-optimization planning approach.
R. Preston Mcafee - One of the best experts on this subject based on the ideXlab platform.
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Interpreting concentration indices in the secondary market for Natural Gas Transportation: The implication of pipeline residual rights☆
Energy Economics, 2008Co-Authors: Michael J. Doane, R. Preston Mcafee, Ashish Nayyar, Michael A. WilliamsAbstract:Abstract In 1992, the U.S. Federal Energy Regulatory Commission created a secondary market for Natural Gas Transportation whereby shippers holding firm Transportation capacity on interstate Natural Gas pipelines can compete with the pipeline in the provision of Transportation services. However, if a shipper does not use some of its contracted firm Transportation capacity, the pipeline can resell that capacity as interruptible Transportation. That is, the pipeline has residual rights with respect to firm Transportation capacity contracted for by shippers. We demonstrate that these residual rights can have a significant effect on the competitiveness of the secondary market for Natural Gas Transportation. A consequence of these residual rights is that the secondary market for Natural Gas Transportation may be considerably more competitive than indicated by measures of concentration like the widely used Herfindahl–Hirschman Index.
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The role of excess capacity in determining market power in Natural Gas Transportation markets
Journal of Regulatory Economics, 2007Co-Authors: R. Preston Mcafee, Philip J. RenyAbstract:The approval by FERC of a regulated Natural Gas pipeline’s market-based rate application depends upon the availability of substitute pipelines with sufficient capacity to maintain the current transport price. But how much alternate capacity is enough? Clearly, the price will not increase when alternate pipelines have unsubscribed capacity equal to the capacity of the applicant pipeline, since the applicant’s capacity is then perfectly substitutable. And indeed, FERC has approved market-based rates when this “complete-replacement” criterion has been met. However, complete-replacement is too stringent a condition and we determine precisely how much alternate capacity suffices to keep the price from rising.
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Evaluating and Enhancing Competition in the Interstate Natural Gas Transporation Industry
Natural Resources Journal, 2004Co-Authors: Michael J. Doane, R. Preston Mcafee, Michael A. WilliamsAbstract:In 1996, the Federal Energy Regulatory Commission (FERC) established criteria it uses when evaluating proposals for marketbased rates by Natural Gas pipelines. Since that time, a number of significant developments have occurred, both in markets for Natural Gas Transportation and in economic tools for marketpower assessment. This article will review the current approach for measuring interstate pipeline market power presented in the 1996 Policy Statement of the FERC and will critically evaluate that framework in light of these recent developments. We show that fundamental changes in the operation of Natural Gas Transportation markets and new developments in the economic analysis of market power suggest that the Commission’s methodology for assessing market power actually or potentially exercisable by pipelines seeking market-based rates is, as it currently stands, inappropriate and should be updated in light of new developments. As we discuss below, the Commission’s approach fails to account for a number of important factors potentially influencing a determination of market power. Consequently, the goals of this article are (1) to apply economically appropriate criteria to current Natural Gas Transportation markets in order to illustrate how to evaluate their competitiveness and (2) to demonstrate that improving the competitive assessment of pipelines competing in those markets could enhance consumer welfare.
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Evaluating and Enhancing Competition in the Interstate Natural Gas Transportation Industry
2004Co-Authors: Michael J. Doane, R. Preston Mcafee, Michael A. WilliamsAbstract:On both sides of the Atlantic, the regulation of Gas transmission networks has undergone major changes since the early 1990s. Whereas in the US, the long-standing regime of cost-plus regulation was complemented by increasing pipe-to-pipe competition, most European countries moved towards incentive regulation complemented by market integration. We study the productivity development of a panel of US interstate companies using data envelopment analysis and Malmquist productivity indices. Results are presented for changes in productivity, as well as for several convergence tests. The results indicate that taking productivity and convergence as performance indicators, regulation has been rather successful, in particular during a period where overall demand was flat. However, we argue that a benchmarking-based regulation might have brought about stronger convergence. Lessons for European regulators are twofold. First, the US analysis shows that benchmarking of European transmission operators would be possible if data were available. Second, our results suggest that, in the long-run, market integration and competition are alternatives to the current European model.
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The Role of Excess Capacity in Determining Market Power in Natural Gas Transportation Markets
SSRN Electronic Journal, 2004Co-Authors: R. Preston Mcafee, Philip J. RenyAbstract:In 1996, the Federal Energy Regulatory Commission (FERC) established criteria for evaluating market-based rate proposals submitted by Natural Gas pipelines. According to one criterion, whose purpose is to ensure that a deregulated pipeline does not increase its transport price by restricting quantity, a pipeline applying for market-based rates must demonstrate that the quantity of excess capacity on rival pipelines is sufficient to replace any reduction in its pipeline's use in the relevant market. While it is true that when this criterion is met, the deregulated firm will have no incentive to restrict quantity, we demonstrate that this criterion is unnecessarily stringent for this purpose. In effect, FERC's criterion assumes that market demand is infinitely inelastic. Consequently, because demand elasticity is typically positive, FERC's criterion is too restrictive, leading to too few successful market-based rate applications. By carefully taking into account demand elasticity, we offer here a more precise, and so more effective, criterion for evaluating market-based rate applications.
