Efficient SPF approach based on regression and correction models for active distribution systems. Issue 14 (10th October 2017)

• Record Type: Journal Article
• Authors: Mahmoud, Karar; Abdel‐Nasser, Mohamed
• Is Part Of: IET renewable power generation. Volume 11:Issue 14(2017)
• Page Start: 1778
• Page End: 1784
• Publication Date: 2017-10-10
• Subjects: regression analysis -- photovoltaic power systems -- load flow -- learning (artificial intelligence) -- trees (mathematics) -- iterative methods -- power distribution -- power engineering computing; efficient SPF approach -- regression model -- correction model -- active distribution systems -- sequential power flow analysis -- SPF analysis -- intermittent photovoltaic unit -- intermittent PV units -- machine learning technique -- regression tree algorithm -- RT algorithm -- voltage estimation -- PV generation -- load demand scenario -- SPF method -- iterative technique -- SPF‐RT -- correction method -- estimation error -- 33‐bus distribution test system -- iterative SPF method -- OpenDSS software -- SPF‐RT method -- SPF‐RTC method; Renewable energy sources -- Periodicals; 333.79405
• DOI: 10.1049/iet-rpg.2017.0300
• Languages: English
• ISSNs: 1752-1416

Abstract

Abstract : This study proposes efficient methods for sequential power flow (SPF) analysis of distribution systems with intermittent photovoltaic (PV) units and fluctuated loads. The proposed methods are based on machine learning techniques; more specifically, they use a regression trees (RTs) algorithm to construct a model for voltage estimation. This model is trained using synthetic data generated by a number of PV generation and load demand scenarios. The SPF methods that utilise iterative techniques have a high computational burden. In turn, the proposed method, which is called SPF‐RT, is fast and accurate. Furthermore, the authors combine SPF‐RT with a correction method to develop a new method, called SPF‐RTC, which significantly reduces the estimation error of the RT model. The proposed methods are tested using a 33‐bus distribution test system interconnected with two PV units. To assess the performance of the proposed methods, they conducted several experiments at different resolutions of day/year data. The proposed methods are compared with the iterative SPF methods and validated using the OpenDSS software. The simulation results demonstrate that the proposed methods outperform the other methods in terms of the computational speed. The SPF‐RT and SPF‐RTC methods are useful for real‐time assessment of distribution systems with PV units.