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环境温度对E级燃气-蒸汽联合循环机组全工况影响

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环境温度对E级燃气-蒸汽联合循环机组全工况影响
Effect of Ambient Temperature on the Performance and Peak Load Regulation of the E-Stage Gas-Steam Combined Cycle Unit
投稿时间:2017-07-06
DOI:10.15918/j.tbit1001-0645.2018.09.005
中文关键词:联合循环全工况性能变工况特性环境温度调峰
English Keywords:combined cycledesign/off-design cycle performanceoff-design propertyambient temperaturepeak load regulation
基金项目:中央高校基本科研业务资助项目(2016MS103);广东省省级科技项目(2015B010101002)
作者单位
钱江波华北电力大学 动力工程系, 河北, 保定 071003
北京理工大学中山研究院, 广东, 中山 528400
周伟伟华北电力大学 动力工程系, 河北, 保定 071003
谷青峰华北电力大学 动力工程系, 河北, 保定 071003
张位华北电力大学 动力工程系, 河北, 保定 071003
张楠华北电力大学 动力工程系, 河北, 保定 071003
周沛华北电力大学 动力工程系, 河北, 保定 071003
邵立伟北京理工大学中山研究院, 广东, 中山 528400
张利国网天津市电力公司 电力科学研究院, 天津 300384
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中文摘要:
研究对象为PG9171E型燃气轮机为顶循环的联合循环机组,构建了燃气-蒸汽联合循环系统变工况模型.通过改变环境温度及相应边界条件,分析了环境温度对联合循环机组全工况性能及调峰能力的影响情况.结果表明:以性能保证工况作为基准工况,降低大气温度,以冬季工况为代表,其全工况性能优于基准工况,效率比基准工况提高幅度为1.69%~3.75%,其出功增加幅度为11.48%~11.57%;提高大气温度,以夏季工况为代表,其全工况性能劣于基准工况,效率降低幅度为2.56%~5.08%,其出功降低幅度为10.44%~10.58%;对于机组的调峰能力,随着环境温度的升高,机组的调峰能力在降低,-20℃时联合循环机组最大、最小发电负荷分别为47.63,242.62 MW;40℃时最大、最小发电负荷分别为39.14,172.12 MW,全年温度范围内调峰幅度为132~194 MW.
English Summary:
Taking a cycle combined with PG9171E gas turbine as the benchmark unit, a gas-steam combined cycle off-design model was established. By changing the ambient temperature and the corresponding boundary conditions, the design/off-design performance and peak load regulation of the combined cycle was analyzed. The results show that, basing the performance guarantee condition as the benchmark condition, with lower temperature as winter condition, the unit exhibits a better off-design performance, with the efficiency increment of 1.69%~3.75%, and its net power output will increase by 11.48%~11.57%. On the contrary, with higher temperature as summer condition, the unit shows lower off-design performance with the efficiency decrement of 2.56%~5.08%, and its net power output will decrease by 10.44%~10.58%. For the peaking load capacity of the unit, with higher temperature the capacity is less and the maximum and minimum generating loads is 47.63 MW and 242.62 MW at -20℃,at 40℃ is 39.14 MW and 172.12 MW respectively; and the peak load in the whole year temperature range is 132~194 MW.
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