华电技术 ›› 2017, Vol. 39 ›› Issue (10): 32-34.

• 技术交流 • 上一篇    下一篇

1000MW机组供电煤耗反平衡计算影响因素分析

  

  1. 陕西国华锦界能源有限责任公司,陕西榆林〓719000
  • 出版日期:2017-10-25 发布日期:2017-11-22

1000MW unit net coal consumption counter balance calculation influence factor analysis

  1. Shanxi Guohua Jinjie Energy Company Limited, Yulin 719000, China
  • Online:2017-10-25 Published:2017-11-22

摘要:

某电厂1000MW超超临界机组生产报表系统中反平衡供电煤耗与正平衡供电煤耗相比,数值波动大,不符合公司正反平衡供电煤耗差值小于2%的要求。为了查找原因,应用热平衡对机组性能计算,定量分析影响反平衡供电煤耗计算的因素,得出参数测量误差、不明泄漏量、给水泵密封水流量等对供电煤耗的影响,改进了实时热耗率计算公式,提高供电煤耗反平衡计算的准确性。

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Abstract:

In the production statement system of a power plant’s 1000MW ultrasupercritical unit, the counter balance net coal consumption value fluctuation is bigger than positive balance net coal consumption. Which did not satisfy the requirement of difference of positive balance and counter balance net coal consumption shall be less than 2%. To find the causes, heat balance was applied to evaluate unit performance. Factors that could influence counter balance net coal consumption were quantitively analyzed. The measurement tolerance, unknown leakage quantity, water supply pump seal leakage quantity and other factors were indicated. Realtime heat rate formula and accuracy of counter balance calculation was improved.

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