Analysis of the Optimal Allocation of Intermittent Distributed Generators in an Unbalanced Distribution Network Using Stochastic Load Flow

2019 ◽  
Author(s):  
Rodolfo A. Aguirre ◽  
Lorence Dominic T. Narcise ◽  
Jenny Rose V. Repollo
Keyword(s):  
Optimal Allocation ◽  
Distribution Network ◽  
Load Flow ◽  
Distributed Generators ◽  
Stochastic Load

scholarly journals Holomorphic Embedding Load Flow Modeling of the Three-phase Active Distribution Network

2018 ◽  
Author(s):  
Yuntao Ju
Keyword(s):  
Large Scale ◽  
Power Transmission ◽  
Distribution Network ◽  
Load Flow ◽  
Heavy Load ◽  
Active Distribution Network ◽  
Distributed Generators ◽  
Three Phase ◽  
Holomorphic Embedding ◽  
Flow Convergence

With large-scale distributed generators (DGs) in an active distribution network (ADN), conventional load flow convergence failure is incurred by heavy power transmission. The Holomorphic Embedding Load Flow Method (HELM) has proven to be more robust than the Newton–Raphson method under heavy power transmission. At present, HELM is mainly designed for balanced transmission networks. In this study, we developed a three-phase HELM model to accommodate DGs, delta connection loads, and ZIP loads for ADN. The effectiveness and better performance of the proposed method under heavy load situations were validated using modified unbalanced IEEE 13, 34, 37, and 123 test feeders.

scholarly journals Enhancement of Voltage Profile by Optimal Placement of Distributed Generators with UPFC in Distribution Networks

2019 ◽  
Vol 8 (6) ◽  
pp. 2733-2738 ◽  
Keyword(s):  
Transmission Lines ◽  
Network Reliability ◽  
Distribution Network ◽  
Flow Analysis ◽  
Distribution Networks ◽  
Load Flow ◽  
Optimal Placement ◽  
Voltage Profile ◽  
Load Flow Analysis ◽  
Distributed Generators

The Distributed generation and fast operating power electronic devices are attracting more attention due to their effective solution for improvement in the voltage profile, to meet the increasing power consumption, reduction in the power loss, enhancement in the power transfer capacity of the transmission lines, reducing the overloading of the entire network. The optimal placement of DG and FACTs devices plays key role in improvement of the network reliability and voltage stability. In this paper exhaustive load flow analysis is carried out for optimal placement of DG and UPFC. The proposed method is tested on 40 bus distribution network. The obtained results are satisfactory in terms of improvement in the overall performance of the distribution network.

scholarly journals ADN_Modelica: An Open Source Sequence-Phase Coupled Frame Program for Active Distribution Network Steady State Analysis

2016 ◽  
Author(s):  
Yuntao Ju ◽  
Fuchao Ge ◽  
Yi Lin ◽  
Jing Wang
Keyword(s):  
Steady State ◽  
Open Source ◽  
Short Circuit ◽  
Distribution Network ◽  
Load Flow ◽  
Renewable Energy Resources ◽  
Steady State Analysis ◽  
Active Distribution Network ◽  
Distributed Generators ◽  
State Analysis

Open source software such as OpenDSS has given a lot of help to distribution network researchers and educators. With high penetration of distributed renewable energy resources into distribution network, tradition distribution steady state analysis software such as OpenDSS is faced with difficulty in handling distributed generators. Three-phase distributed generators are often modeled in sequence frame while unbalanced distribution network are usually modeled in phase frame. So a load flow in sequence-phase coupled frame is proposed to handle models described in both frames. Voltage controlled DGs which are difficult to cope with in OpenDSS are handled in proposed program. The steady state analysis platform is programmed with open source Modelica language and the main aim of this paper is to introduce an open source platform for active distribution network steady analysis include load flow and short circuit analysis which can be easily adopted and improved by other educators and researchers.

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