华电技术 ›› 2016, Vol. 38 ›› Issue (8): 12-15.

• 研究与开发 • 上一篇    下一篇

冷热电联供机组性能曲线的在线拟合方法

  

  1. 中国华电集团科学技术研究总院有限公司,北京〓100070
  • 出版日期:2016-08-25 发布日期:2016-10-31

Online fitting method of performance curve of combined cooling,heating and power unit

  1. China Huadian Science and Technology Institute Company Limited, Beijing 100070, China
  • Online:2016-08-25 Published:2016-10-31

摘要:

摘要:为了评估冷热电联供机组运行性能并进行实时优化,提出了一种用遗传算法对运行数据进行分段拟合的方法。遗传算法采用MATLAB现有的ga函数,利用最小二乘法评估拟合误差,分段点处利用约束保证连续、光滑。采用该方法对上海某分布式能源站余热锅炉的高压、低压蒸汽量和燃气轮机发电量的关系进行拟合,拟合结果表明,该方法能够实现自动分段拟合,拟合曲线能够准确反映数据趋势。

关键词:

Abstract:

Abstract:In order to evaluate the operation performance of combined cooling, heating and power unit and perform a realtime optimization, this paper proposed a piecewise fitting method of operation data using genetic algorithm. The genetic algorithm adopted the existing ga function in MATLAB, and utilized the least square method to evaluate the fitting error and constraints to ensure the continuity and smoothness at piecewise points.Using this method, this paper fitted the relationship among high pressure steam quantity, low pressure steam quantity and generating capacity of gas turbine for the heat recovery boiler of a certain distributed energy station in Shanghai. Fitting results indicated that this method could realize the automatic piecewise fitting and the fitting curve could accurately reflect the trend of data.

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