Performance Analysis of Gas Turbine Using Compressor Extraction in Compressed Air System of Station

2020 5th International Conference on Mechanical, Control and Computer Engineering (ICMCCE) Pub Date : 2020-12-01 DOI:10.1109/ICMCCE51767.2020.00128

Guo Xiaolei

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Abstract

In view of the problems of high energy consumption and low utilization rate of electric drive air compressor in industrial compressed air system, taking the compressor station of centrifugal compressor driven by PGT25+ gas turbine in long-distance natural gas pipeline as an example, the PGT25+ gas turbine simulation model was established by using three-dimensional CFD numerical simulation software, and the performance changes of gas turbine caused by compressor extraction were analyzed. Through calculation and analysis, it is found that the use rate of the existing station air compressor can be reduced by using gas turbine for compressed air in station, but the performance of gas turbine will be affected to a certain extent. Compared with the existing air compressor energy consumption, it does not have an advantage in economy. However, the influence of the maintenance, spare parts procurement, power supply and technical blockade of the existing electric drive air compressor in the existing station can be comprehensively considered, and the technical transformation can be carried out according to the situation.

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站内压缩空气系统压缩机抽气燃气轮机性能分析

针对工业压缩空气系统中电驱动空压机能耗高、利用率低的问题，以长输天然气管道中PGT25+燃气轮机驱动的离心式压缩机压缩站为例，利用三维CFD数值模拟软件建立PGT25+燃气轮机仿真模型，分析压缩机抽气对燃气轮机性能的影响。通过计算分析发现，采用燃气轮机进行站内压缩空气，可以降低现有站内空压机的使用率，但会在一定程度上影响燃气轮机的性能。与现有空压机能耗相比，在经济性上并不具有优势。但可综合考虑现有站现有电驱动空压机的维护、备件采购、供电、技术封锁等方面的影响，并根据情况进行技术改造。

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2020 5th International Conference on Mechanical, Control and Computer Engineering (ICMCCE)

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