Short-term Prediction of PV Power Based on BSimilar Optimized PTransformer

张文广; 蔡浩; 刘科; 孙盼荣

doi:10.19805/j.cnki.jcspe.2026.240722

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Short-term Prediction of PV Power Based on BSimilar Optimized PTransformer

更新时间：2026-10-10

- Short-term Prediction of PV Power Based on BSimilar Optimized PTransformer
- Chinese Journal of Power Engineering Vol. 46, Issue 1, Pages: 77-84(2026)
- 作者机构：
  
  1. 华北电力大学新能源电力系统全国重点实验室,北京,102206
  2. 华北电力大学控制与计算机工程学院,北京,102206
- 作者简介：
- 基金信息：
- DOI：10.19805/j.cnki.jcspe.2026.240722
  CLC：
- Online First：15 January 2026，
  
  Published：15 January 2026
- 稿件说明：
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张文广,蔡浩,刘科,孙盼荣. 基于BSimilar优化PTransformer的光伏功率短期预测动力工程学报, 2026, 46(1): 77-84 https://doi.

org/10.19805/j.cnki.jcspe.2026.240722
张文广,蔡浩,刘科,孙盼荣. 基于BSimilar优化PTransformer的光伏功率短期预测动力工程学报, 2026, 46(1): 77-84 https://doi. DOI： 10.19805/j.cnki.jcspe.2026.240722.

org/10.19805/j.cnki.jcspe.2026.240722 DOI：

摘要

为提高光伏功率短期预测的精度

提出了考虑光伏设备性能退化因素的相似日算法优化的分时段多通道独立光伏功率短期预测方法。首先

在PTransformer模型中用分时段与通道独立的方法来处理光伏输入数据

以降低空间复杂度及提高长时间数据序列的关注度。其次

运用Transformer的编码器模型

通过自身注意力机制捕捉光伏序列特征之间的依赖关系

进行光伏功率的短期预测。最后

运用夹角余弦距离计算相似度并考虑光伏设备性能退化因素确定相似日

利用其功率数据优化PTransformer模型

以改善功率数据的滞后性。结果表明:相比典型的光伏功率短期预测方法

所提方法训练速度更快

预测精准度更高

并且对复杂天气状况下的光伏功率也有较好的预测结果。

Abstract

To enhance the accuracy of short-term photovoltaic power forecasting

a segmented multi-channel independent short-term photovoltaic power prediction method optimized by a similar day algorithm with consideration of photovoltaic equipment performance degradation factors was proposed. Firstly

the photovoltaic input data were processed in PTransformer model with time period and channel independent methods to reduce the spatial complexity and improve the attention of long-term data series. Secondly

the encoder model of Transformer was applied to capture the dependencies between photovoltaic sequence features through its own attention mechanism for short-term photovoltaic power prediction. Finally

the PTransformer model was optimized using its power data to improve the lag of the power data by applying the angle cosine distance to calculate the similarity and considering the performance degradation factors of the photovoltaic equipment to determine the similar day. Results show that compared with typical short-term photovoltaic power prediction method

the proposed method has faster training speed

higher prediction accuracy and better prediction results for photovoltaic power under complex weather conditions.

关键词

Keywords

references

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