华电技术 ›› 2017, Vol. 39 ›› Issue (5): 1-6.

• 研究与开发 •    下一篇

计及预测误差的冷热电联供系统成本计算方法

  

  1. 四川大学电气信息学院,成都〓610065
  • 出版日期:2017-05-25

A cost reckoning method for DCCHP considering the prediction error

  1. School of Electrical Engineering and Information, Sichuan University, Chengdu 610065,China
  • Published:2017-05-25

摘要:

目前,计算分布式冷热电联供系统成本时,源荷数据均采用预测值。但各类负荷预测方法和可再生能源出力预测方法具有局限性,会造成数据预测存在误差,进而影响联供系统成本计算的准确性。建立参与元件较为全面的联供系统模型,采用拉丁超立方采样技术模拟各类负荷及可再生能源出力预测值的预测误差波动,并用场景削减技术提取出可涵盖绝大多数误差的典型场景,对每种典型场景进行成本计算后按概率加权得到计及预测误差的系统成本。最后,对典型冷热电联供系统进行仿真及灵敏度分析,结果表明,对于不同精度的预测值,所提方法均能计算出符合实际的联供系统成本,为实际系统规划与设计提供有效参考。

关键词:

Abstract:

Calculating the cost of distributed combined cooling, heating and power system (DCCHP), the data of source and load usually use the predicted values at present. However, the limitation of load forecasting method and renewable energy forecasting method can cause the data prediction error and affect the accuracy of the combined system cost calculation further. In this paper, a model of DCCHP which has complete components is established. Sampling the data of load and renewable energy outputs to simulate the predicted errors of the data, the typical scenarios can be built by the LHS scenarios reduction process. For each of typical scenarios, the cost is calculated and weighted by its occurrence probability to generate the cost considering the prediction error. Finally, simulation of a typical DCCHP and sensitivity analysis certify that for the predicted values of different accuracy the method proposed by this paper can calculate the system cost accurately and provide effective reference for practical system planning and design.

Key words: