燃气电厂气质影响分析及政策趋势研究

Influence Analysis and Policy Trend of Natural Gas Quality in Gas Power Plants

近年来,中国天然气气源日益多元化,不同气质的成分与热值差异较大,对燃气电厂安全和经济运行产生显著影响。同时,国内气电装机容量迅速增加,作为主要燃料,天然气气质情况备受关注。基于现有长输管线天然气标准变化及国内典型地区燃气气质现状,通过电厂调研和实验研究方法分析了燃料热值、沃泊指数、硫化物等参数对燃气电厂的安全环保运行的影响,并基于电厂调研和热平衡软件计算结果,从"体积计价"与"能量计价"方式比较、高位热值和低位热值计价比较以及燃气计量系统故障等三方面分析了燃料对燃气电厂的经济性影响。最后,在我国天然气政策趋势分析基础上,从降低仪器设备故障率、共享和利用燃料大数据等方面对燃气电厂以及气电上下游企业提出了科学实用的燃料管理意见和建议。

In recent years,China’s natural gas sources have become increasingly diversified,and the composition and calorific value of different gas qualities vary greatly,which has a significant impact on the safety and economic operation of gas-fired power plants.At the same time,the installed capacity of domestic gas and electricity has increased rapidly.As the main fuel,the quality of natural gas has received much attention.Based on the changes of existing natural gas standards for long-distance pipelines and the gas quality status of typical areas in China,analyzes the influence of fuel calorific value,Wobbe index,sulfide and other parameters on the safe and environmental protection operation of gas power plants through power plant investigation and experimental research methods,and based on the calculation results of power plant research and heat balance software,compares the"volume pricing"and"energy pricing"methods The comparison of high calorific value and low calorific value and the failure of gas metering system are analyzed.Finally,based on the analysis of my country’s natural gas policy trends,this article puts forward scientific and practical fuel management opinions and suggestions for gas-fired power plants and gas and electricity upstream and downstream companies from the aspects of reducing equipment failure rate,sharing and using fuel big data.