Abstract：Aiming at quantitative analysis of uncertainty of coal heat value in process of coal sample collection, actual sampling experiments are carried out in 17 boilers of 6 power plants. Uniformity of coal quality being expressed by variance of concentration, coal sampling random model revised by experiments is established to analyze effects of uniformity of coal quality on uncertainty of coal heat value, on basis of this, the dispersive characteristics of the weighted average calorific value of coal are investigated, and it shows that (1) Uncertainty of coal heat value caused by coal sampling process in different boilers are ranged from 1 ~ 4.82MJ/kg, (2) The worse of coal mixed uniformity, the greater of coal heat value uncertainty in coal sampling process, (3) Coal calorific value uncertainty can be significantly reduced by the weighted average calorific value of coal.
［1］赵晓东. 能源计量和建模技术的研究与应用［J］. 计量学报, 2013, 34(2): 143-148.
Zhao X D. Research and applicaton on energy model and energy measurement technology ［J］. Acta Metrologica Sinica, 2013, 34(2): 143-148.
［2］杭晨哲, 徐定华, 马国远, 等. 空气焓值法测量全年能源消耗效率不确定度评定方法研究［J］. 计量学报, 2017, 38(1): 34-39.
Hang C Z, Xu D H, Ma G Y, et al. Study on uncertainty evaluation of annual performance factor based on air Air-enthalpy method ［J］. Acta Metrologica Sinica, 2017, 38(1): 34-39.
［3］孙新华. 煤发热量测量不确定度评定的探讨［J］. 能源技术, 2006, 27(1): 44-46.
Sun X H. The measurement uncertainty in determination of calorific value of coal ［J］. Energy technology, 2006, 27(1): 44-46.
［4］关维琦, 窦艳红, 王子乔. 煤弹筒发热量的测量不确定度评定［J］. 长春理工大学学报(自然科学版), 2012, 35(3): 169-171.
Guan W Q, Dou Y H, Wang Z Q. Evaluation of Uncertainty in Measurement of Bomb Calorific Value of Coal［J］. Journal of Changchun University of Science and Technology, 2012, 35(3): 169-171.
［5］陈继军, 宋璟, 张继斌. 影响电厂供电煤耗正反平衡因素分析［J］. 华北电力技术, 2009,(12): 15-17.
Chen J J, Song J, Zhang J B. Evaluation of uncertainty in measurement based on a Monte Carlo method ［J］. North china electric power, 2009,(12): 15-17.
［6］国家标准化管理委员会. GB/T10184—2015电站锅炉性能试验规程 ［S］. 北京:中国标准出版社, 2016.
［7］林力, 周惠康, 郁明芳. 煤炭高位发热量的测量不确定度评定［J］. 煤炭科学技术, 2003, 31(10): 11-13.
Lin L, Zhou H K, Yu M F. Assessment on measurement uncertainty of high ranking calorific value for coal ［J］. Coal science and technology, 2003, 31(10): 11-13.
［8］张云红, 商玲玲, 智顺. 煤炭高位发热量测量结果的不确定度评定［J］. 计量与测试技术, 2005, 32(7): 40-41.
Zhang Y H, Shang L L, Zhi S. Evaluation of uncertainty in measurement of high calorific value of coal ［J］. Metrology and Testing Technology, 2005, 32(7): 40-41.
［9］李书杰, 钱艺华, 陈天生, 等. 煤恒容高位发热量测量不确定度评定［J］. 热力发电, 2005,(4): 28-30.
Li S J, Qian Y H, Chen T S, et al. Evaluation of Uncertainty in Measurement if Constant Volume Gross Calorific Value for Coal［J］. Thermal Power Generation, 2005,(4): 28-30.
［10］刘福国. 国电泰安热电有限公司#1、2机组煤耗分析报告［R］. 济南:山东电力研究院, 2016.
［11］周洪伟. 正态性检验的几种常用方法［J］. 南京晓庄学院学报, 2012, 5(3): 13-18.
Zhou H W. Normal test method of data and its statistical software implementation［J］. Journal of Nanjing Xiaozhuang university. 2012, 5(3): 13-18.
［12］袁志发, 周静芋. 试验设计与分析［M ］. 北京:高等教育出版社, 2000: 29-225.
［13］章遐林, 汪杰斌. 影响供电煤耗的主要因素及应对措施［J］. 发电设备, 2012, 26(6): 425-427.
Zhang X L, Wang J B. Major influencing factors of coal consumption for power supply and solutions［J］. Power equipment, 2012, 26(6): 425-427.
［14］方兴华, 宋明顺, 顾龙芳, 等. 基于自适应蒙特卡罗方法的测量不确定度评定［J］. 计量学报, 2016, 37(4): 452-456.
Fang X H, Song M S, Gu L F, et al. Application of adaptive Monte Carlo method on measurement uncertainty evaluation ［J］. Acta Metrologica Sinica, 2016, 37(4): 452-456.
［15］胡红波,孙桥,杜磊,等. GUM与基于观测方程的测量不确定度评估［J］. 计量学报, 2017, 38(5): 656-660.
Hu H B, Sun Q, Du L, et al. GUM and Analysis of Measurement Uncertainty Evaluation Using Observation Equation
［J］. Acta Metrologica Sinica, 2017, 38(5): 656-660.
［16］刘园园, 杨健, 赵希勇, 等. GUM法和MCM法评定测量不确定度对比分析［J］. 计量学报, 2018, 39(1): 135-139.
Liu Y Y, Yang J, Zhao X Y, et al. Comparative analysis of uncertainty measurement evaluation with GUM and MCM ［J］. Acta Metrologica Sinica, 2018, 39(1): 135-139.
［17］陆厚根. 粉体工程导论［M］. 上海:同济大学出版社, 1993: 285-288.
2019, Vol. 40 
