Date of Award

3-2023

Document Type

Masters Thesis

Degree Name

M.S.

Organizational Unit

Daniel Felix Ritchie School of Engineering and Computer Science, Electrical and Computer Engineering

First Advisor

Rui Fan

Second Advisor

Yunbo Yi

Third Advisor

Mohammad Abdul Matin

Fourth Advisor

Wenzhong Gao

Keywords

Power flow, Neural network, High impedance faults, Power grids

Abstract

My thesis is divided into two parts.

The first part is: “Optimal Power Flow Estimation Using One-Dimensional Convolutional Neural Network [1]“. Optimal power flow (OPF) is an important research topic in power system operation and control decisions. Traditional OPF problems are solved through dynamic optimization with nonlinear programming techniques. For a large power system with large amounts of variables and constraints, the solving process would take a long time. This paper presents a new method to quickly estimate the OPF results using a one-dimensional convolutional neural network (1D-CNN). The OPF problem is treated as a high-dimensional mapping between the load inputs and the generator dispatch decisions. Therefore, through training the neural network to learn the mapping between loads and generator outputs, we can directly predict the OPF results with the load information of a system. In this paper, we built and trained a 1D-CNN to learn the mappings between system loads and generator outputs, and the 1D-CNN model was tested using IEEE 30, 57, 118, and 300 Bus systems. Extensive test and sensitivity study results have validated the effectiveness of using the 1D-CNN to estimate the OPF results. This part is from chapter 1 to chapter 6;

The second part is: “Synthetic High Impedance Fault Data through Deep Convolutional Generated Adversarial Network [2]“. High impedance faults (HIFs) have always been significant challenges in the power grids. Researchers have developed some advanced protective methods to detect the HIFs. To test and validate these methods, large amounts of HIF data are required. This paper presents a synthetic HIF data generating method using the deep convolutional generated adversarial network (DCGAN). The DCGAN includes a generator module to create synthetic HIF waveform from random noises; and a discriminator module to identify the flaws of those synthetic data, which ultimately helps improve the quality of the synthetic data created by the generator. To test the fidelity of the generated synthetic HIF data, two different HIF-detection methods have been applied. Extensive simulation results have validated the effectiveness of using the DCGAN to create synthetic HIF data. This part is from chapter 7 to chapter 11.

Publication Statement

Copyright is held by the author. User is responsible for all copyright compliance.

Rights Holder

Kun Yang

Provenance

Received from ProQuest

File Format

application/pdf

Language

en

File Size

47 pgs

Discipline

Engineering, Electrical engineering

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