燃机电厂负荷率与天然气消耗关系分析 段芮.docVIP

中国工程热物理学会 学科类别: 工程热力学与能源利用 学术会议论文 编号:143421 燃机电厂负荷率与天然气消耗关系分析 段芮1,2，朱群志1，崔国民2（1. 上海电力学院能源与机械工程学院，上海，200090； 2. 上海理工大学能源与动力工程学院，上海，200090） （Email）摘 要：“燃气一蒸汽联合循环”发电作为一种先进的发电技术,能较大幅度提高发电厂的热效率,并使污染问题得到解决,这使得它在电力生产行业中的地位日渐提高。本文以上海某燃机电厂为对象,分析在实际运行过程中负荷率与天然气消耗之间的关系。负荷率减小，气耗增大；负荷率增大，气耗减少，当负荷率大于73%时，气耗基本保持不变。低负荷率时，用气量提高, 频繁启停致使机组效率降低。优化启停阶段的天然气燃烧，会明显降低机组气耗。 关键词：燃气-蒸汽联合循环；负荷率；天然气消耗；关系分析 The Relationship analysis of Loading rate and natural gas consumption in Gas turbine power plant DUAN- rui1,2，ZHU Qun- zhi1，CUI Guo- min2 (1.Shanghai University of Electric Power，Shanghai 200090，China , 2.School of Energy and Power Engineering，University of Shanghai for Science and Technology，Shanghai 200090，China) Abstract: Gas-steam combined cycle power as an advanced power generation technology, can greatly improve the thermal efficiency of thermal power plants, and to solve the pollution problem, which makes it have the rising status in the power production industry . In this paper, taking a Shanghai gas turbine power plant as a sample , analysing the relationship between the consumption of natural gas and the actual running load factor. Loading rate increases, the gas consumption decreases. When the load is higher than 73%, the gas consumption remained basically unchanged. Low loading rate, the gas consumption increase, start and stop frequently result in reducing efficiency of the unit. Optimization the natural gas combustion of start and stop stage, the unit will significantly reduce gas consumption. Key words: Gas-steam combined cycle; Loading rate; Natural gas consumption; The relationship analysis 0. 前言 随着我国电力能源政策调整和变化，发展绿色能源、减少环境污染成为主导方向[1,2]。“燃气一蒸汽联合循环”发电作为一种先进的发电技术，具有开、停机快，运行负荷调节幅度大速度快，并越来越多承担调峰运行，能较大幅度提高火力发电厂的热效率，现在燃气轮机、余热锅炉和汽轮机结合的联合循环已能把发电效率提高到60%左右，并使污染问题获得解决，这使得它在电力生产行业中的地位日渐提高，使大容量、高效率的燃气一蒸汽联合循环发电技术迅速、全面的成熟完善已成为一种必然的趋势[3,4,5,6,7,8,9,10]。 本文以上