Cost Benefit Analysis for Maintenance Strategy of Gas Turbine Inlet Filtration System

doi:10.12096/j.2096-4528.pgt.21104

Abstract

Abstract:

Maintaining the normal operation of inlet filtration system is of great significance to ensure the operation efficiency of gas turbine unit. The maintenance economic benefit analysis model of gas turbine inlet filtration system was established, and the total maintenance cost was divided into three parts, i. e., initial cost, shutdown cost and performance degradation cost. Secondly, based on the model, the optimization methods of filter replacement and compressor washing maintenance cycle were proposed. Finally, the adjustment mode of maintenance strategy under the condition of abnormal degradation of inlet filtration system was explored. The results show that the economic benefits of gas turbine operation can be significantly improved by combining the degradation state evaluation of inlet filtration system and adjusting the maintenance cycle accordingly.

Key words: gas turbine, inlet filtration system, life cycle cost analysis, shutdown cost

CLC Number:

TK 14

Yunfeng JIN, Chao LIU, Gaofeng DENG, Yunlong GUAN, Jiangang HAO, Haizhou HUANG, Dongxiang JIANG. Cost Benefit Analysis for Maintenance Strategy of Gas Turbine Inlet Filtration System[J]. Power Generation Technology, 2022, 43(1): 119-125.

Figures/Tables 6

References 12

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变量	物理意义	取值
c_cf/(万元/组)	粗滤初始成本	4.95
c_hf/(万元/组)	精滤初始成本	135
c_wash/(万元/次)	水洗成本	1.55
c_e/[元/(kW·h)]	上网电价	0.5
c_fuel/[元/(kW·h)]	额定气耗成本	0.399
N_gen/MW	额定输出功率	470
Q_foul	压气机积垢退化因子	气耗率升高5.54%/2 000 h
Q_DPcf	粗滤压差退化因子	压损升高390 Pa/1 000 h
Q_DPhf	精滤压差退化因子	压损升高87 Pa/1 000 h
t_down/h	单次停机时长	10
t_gen/h	年运行时长	4 500
W_start/(MW·h)	启动过程折合耗电量	200

变量	物理意义	取值
c_cf/(万元/组)	粗滤初始成本	4.95
c_hf/(万元/组)	精滤初始成本	135
c_wash/(万元/次)	水洗成本	1.55
c_e/[元/(kW·h)]	上网电价	0.5
c_fuel/[元/(kW·h)]	额定气耗成本	0.399
N_gen/MW	额定输出功率	470
Q_foul	压气机积垢退化因子	气耗率升高5.54%/2 000 h
Q_DPcf	粗滤压差退化因子	压损升高390 Pa/1 000 h
Q_DPhf	精滤压差退化因子	压损升高87 Pa/1 000 h
t_down/h	单次停机时长	10
t_gen/h	年运行时长	4 500
W_start/(MW·h)	启动过程折合耗电量	200

成本构成	优化前/万元	优化后/万元	变化率/%
初始成本	86	178	107
停机维修成本	221	809	266
性能下降成本	3 869	935	-76
总维修成本	4 176	1 922	-54

成本构成	优化前/万元	优化后/万元	变化率/%
初始成本	86	178	107
停机维修成本	221	809	266
性能下降成本	3 869	935	-76
总维修成本	4 176	1 922	-54

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