计算机与现代化 ›› 2023, Vol. 0 ›› Issue (07): 7-12.doi: 10.3969/j.issn.1006-2475.2023.07.002

• 人工智能 • 上一篇    下一篇

基于FCGA-LSTM与迁移学习的天然气负荷预测

  

  1. 西安建筑科技大学管理学院
  • 出版日期:2023-07-26 发布日期:2023-07-27
  • 作者简介:张志霞(1973—),女,内蒙古包头人,副教授,博士,研究方向:大数据,社会舆情,E-mail: 1079353791@qq.com; 通信作者:谢宝强(1995—),男,硕士研究生,研究方向:大数据,深度学习,负荷预测,E-mail: 1553838263@qq.com。
  • 基金资助:
    国家自然科学基金面上项目(62072363)

Natural Gas Load Forecasting Based on FCGA-LSTM and Transfer Learning

  1. School of Management, Xi’an University of Architecture and Technology
  • Online:2023-07-26 Published:2023-07-27

摘要: 摘要:高精度的天然气负荷预测对天然气管网的平稳高效运行具有重要意义。现有天然气负荷预测方法大多是基于历史数据充足条件的,而对缺少历史数据地区天然气负荷预测问题研究很少。针对此类问题,本文提出一种模糊编码遗传算法(FCGA)优化的长短时记忆(LSTM)神经网络与迁移学习结合的天然气短期负荷预测方法。首先选定源域与目标域,利用源域的大量历史负荷数据构建FCGA-LSTM预测模型,进行模型训练与测试后将源域模型整体迁移至缺少数据的目标域,接着利用目标域少量数据对模型进行参数微调及二次训练,最终得到目标域负荷预测模型。以西安某新建小区为例验证,结果显示,基于FCGA-LSTM与迁移学习的预测方法相比于LSTM加迁移学习组合方法、非迁移学习下LSTM,预测精度分别提高15.6个百分点与35.2个百分点,表明了模型的有效性。本文方法对缺少历史数据的新建城区天然气负荷预测具有一定指导作用。

关键词: 关键词:天然气, 负荷预测, 遗传算法, 长短时记忆网络, 迁移学习

Abstract: Abstract:High precision natural gas load forecasting is of great significance to the smooth and efficient operation of natural gas pipeline network. Most of the existing natural gas load forecasting methods are based on the condition of sufficient historical data, and there is little research on the problem of natural gas load forecasting in areas lacking historical data. To solve these problems, a short-term natural gas load forecasting method based on long and short-term memory(LSTM)neural network optimized by Fuzzy Coded Genetic Algorithm (FCGA) and transfer learning is proposed. First, the source domain and the target domain are selected, and the FCGA-LSTM prediction model is constructed by using a large amount of historical load data in the source domain. After model training and testing, the source domain model is moved to the target domain lacking data as a whole, and then a small amount of data in the target domain is used to fine tune and retrain the model. Finally, the target domain load prediction model is obtained. Taking a new residential area in Xi’an as an example, the results show that the prediction accuracy of the prediction method based on FCGA-LSTM and transfer learning is improved by 15.6 percentage points and 35.2 percentage points respectively compared with the combination method of LSTM and transfer learning, LSTM under non transfer learning, which proves the effectiveness of the model. The proposed method has certain guiding significance for the prediction of natural gas load in new urban areas lacking historical data.

Key words: natural gas, load forecasting, genetic algorithm, LSTM, transfer learning

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