Line-pack management for producing electric power on peak periods

被引：10
作者：
Ernst, M. A. B. [1 ]
Perrella Balestieri, J. A. [1 ]
Landa, H. G. [2 ]
Mantelli, M. B. H. [3 ]
机构：
[1] Univ Estadual Paulista, BR-12516410 Guaratingueta, SP, Brazil
[2] Petrobras Petr Brasileiro SA, Rio De Janeiro, Brazil
[3] Univ Fed Santa Catarina, BR-88040900 Florianopolis, SC, Brazil
来源：
APPLIED THERMAL ENGINEERING | 2011年 / 31卷 / 01期
关键词：
Line-pack management; Natural gas; Electricity generation; Economic dispatch; COGENERATION; FLOW;
D O I：
10.1016/j.applthermaleng.2010.08.009
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The distribution of natural gas is carried out by means of long ducts and intermediate compression stations to compensate the pressure drops due to friction. The natural gas compressors are usually driven by an electric motor or a gas turbine system, offering possibilities for energy management, one of these consisting in generating energy for use in-plant or to commercialize as independent power producer. It can be done by matching the natural gas demand, at the minimum pressure allowed in the reception point, and the storage capacity of the feed duct with the maximum compressor capacity, for storing the natural gas at the maximum permitted pressure. This allows the gas turbine to drive an electric generator during the time in which the decreasing pressure in duct is above the minimum acceptable by the sink unit. In this paper, a line-pack management analysis is done for an existing compression station considering its actual demand curve for determining the economic feasibility of maintaining the gas turbine system driver generating electricity in a peak and off-peak tariff structure. The potential of cost reduction from the point of view of energy resources (natural gas and electric costs) is also analyzed. (C) 2010 Elsevier Ltd. All rights reserved.
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页码：42 / 49
页数：8
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