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Life Analysis of Industrial Gas Turbines Used As a Back-Up to Renewable Energy Sources

机译：工业燃气轮机的生活分析用作可再生能源的备用

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The estimated life of gas turbines is expected to diminish over time when compared to the manufacturers' estimated life, particularly when used as a back-up to Renewable Energy Sources (RES). As RES are been introduced into the grid, the gas turbines used in conjunction with them are operated in "Load-Following" modes to these RES which includes wind, thermal, solar, etc. As back-up plants, the start/stop and power settings are expected to be dictated by the response to grid requirements and need to compensate for the load shortfall attributable to unpredictable nature of RES. This mode of operation results in Gas turbine high pressure turbine blades experiencing low cycle fatigue and creep life failure over time. It is therefore of great importance to estimate the life consumed during this mode of operation to enable appropriate maintenance planning/repair action. In order to estimate the life consumed during adverse/cyclic operating regimes, a tool has been developed wherein different scenarios can be simulated and analyzed to obtain engine life consumption factors. The tool is capable of estimating life consumption based on seasonal power demand. For the purpose of study, an aero derivative power plant of 100MW power output was used as a reference engine. The paper provides an in-depth analysis of the study undertaken and it arrives at the conclusion that the operation of engine during summer contributes to a higher degree of LCF and creep life consumption in comparison to operations during other seasons.
机译：与制造商估计的寿命相比，燃气轮机的估计寿命会随着时间的推移而减少，特别是当用作可再生能源（RES）的备用时。随着res被引入到电网中，与它们一起使用的燃气轮机以“负载跟随”模式运行，包括风，热，太阳能等作为备用植物，开始/停止和电源设置预计将通过对网格要求的响应来决定，并需要弥补应占RES不可预测性质的负载缺陷。这种操作模式导致燃气轮机高压涡轮机叶片经历低循环疲劳和蠕变寿命失效。因此，估计在这种操作模式下消耗的寿命非常重要，以实现适当的维护计划/修复动作。为了估计在不利/循环操作方案期间消耗的寿命，已经开发了一种工具，其中可以模拟和分析不同的场景以获得发动机寿命消耗因素。该工具能够根据季节性电力需求估算寿命消耗。出于研究目的，100MW电力输出的AERO衍生电厂用作参考发动机。本文提供了对研究进行的深入分析，并到达了夏季发动机运行的结论，与其他季节的操作相比，发动机的运行有助于更高的LCF和蠕变寿命消耗。

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