能源聚合背景下电网新能源接纳能力评估方法

Evaluation method for new energy acceptance capacity of power grid in context of energy aggregation

由于风电光伏等新能源大规模接入电网,造成了一系列的问题,因此如何合理评估电网对新能源接纳能力问题亟待解决。建立一种新能源聚合背景下的电网新能源接纳能力评估模型。首先,合理选择电网对于所聚合的不同新能源接纳能力的指标,并选择了其他有影响因素的指标,然后对选择的各指标进行归一化;其次,选择自编码器作为降维工具,对数据进行降维以处理各指标间的耦合性,并将降维后的数据输入朴素贝叶斯分类模型中进行训练,得到有效的数据分类模型,并对分类模型进行了交叉检验;最后,用算例验证了所提出方法的可靠性。结果表明,该方法能有效评估电网新能源接纳能力,而所提出方法相比其他方法具有一定的准确性,对如何解决电网新能源消纳问题具有一定指导意义和参考价值。

Due to the large-scale access of new energy such as wind power and photovoltaic to the power grid,a series of problems have been caused.Therefore,the issue of how to reasonably assess the acceptance capacity of the power grid for new energy needs to be addressed.This paper establishes a new energy acceptance capacity evaluation model for power grids in the context of multiple new energy aggregations.Firstly,the indicators of the grid′s ability to accommodate different aggregated new energy sources were reasonably selected,and other indicators with influencing factors were selected.Then,the selected indicators were normalized.Secondly,this paper selects a autoencoder as a dimensionality reduction tool to reduce the dimensions of the data to deal with the coupling between various indicators,and inputs the dimensionality reduced data into a naive Bayesian classification model for training to obtain an effective data classification model,and conducts a cross test of the classification model.Finally,a numerical example was used to verify the reliability of the proposed method,and the results show that the method can effectively evaluate the new energy acceptance capacity of the power grid.Compared with other methods,the method proposed in this paper has certain accuracy,and has certain guiding significance and reference value for how to solve the problem of new energy consumption in the power grid.