Fast Calculation of Probabilistic Optimal Power Flow: A Deep Learning Approach

TL;DR

This paper introduces a deep learning method using stacked denoising autoencoders to efficiently and accurately solve probabilistic optimal power flow problems, significantly reducing computational complexity.

Contribution

It develops a novel SDAE-based approach that learns system correlations for fast POPF solutions without repeated optimization, enhancing practical application.

Findings

The SDAE model accurately predicts OPF solutions for test cases.

The method reduces computation time compared to traditional optimization.

Effective on a modified IEEE 118-bus system.

Abstract

Probabilistic optimal power flow (POPF) is an important analytical tool to ensure the secure and economic operation of power systems. POPF needs to solve enormous nonlinear and nonconvex optimization problems. The huge computational burden has become the major bottleneck for the practical application. This paper presents a deep learning approach to solve the POPF problem efficiently and accurately. Taking advantage of the deep structure and reconstructive strategy of stacked denoising auto encoders (SDAE), a SDAE-based optimal power flow (OPF) is developed to extract the high-level nonlinear correlations between the system operating condition and the OPF solution. A training process is designed to learn the feature of POPF. The trained SDAE network can be utilized to conveniently calculate the OPF solution of random samples generated by Monte-Carlo simulation (MCS) without the need of optimization. A modified IEEE 118-bus power system is simulated to demonstrate the effectiveness of the proposed method.