Use of multifunctional power electronic network controllers in smart distribution systems

2014 ◽  
Author(s):  
Murat Kale ◽  
Ines Hauer ◽  
Wolfram Kruschel ◽  
Tobias Maurer ◽  
Peter Zacharias
Keyword(s):  
Distribution Systems ◽  
Power Electronic ◽  
Electronic Network

Distribution systems equipped with power electronic transformers

2013 ◽  
Author(s):  
Johnny Posada Contreras ◽  
Juan M. Ramirez ◽  
Javier Vargas Marin ◽  
G. Rosa E. Correa
Keyword(s):  
Distribution Systems ◽  
Power Electronic

scholarly journals DSTATCOM for Harmonics Mitigation in 3-Phase 3-Wire Sytem

10.29007/nkxw ◽  
2018 ◽  
Author(s):  
Khoda N. Odedra ◽  
Saurabh Pandya ◽  
Dhaval Patel ◽  
Maheshwariba Zala
Keyword(s):  
Control Strategy ◽  
Distribution System ◽  
Distribution Systems ◽  
Current Problem ◽  
Power Electronic ◽  
Phase 3 ◽  
Load Current ◽  
Current Harmonics ◽  
Non Linear

Distribution systems have been facing serious problems of harmonics load current mainly due to advancement in power electronic based and other non-linear loads. The DSTATCOM has been widely used to mitigate the load current harmonics problems in distribution system. In this paper design and simulation of DSTATCOM with SRF Control Strategy is carried out with 3-phase 3-wire distribution system to mitigate the harmonics load current problem using MATLAB /SIMULIMK software.

scholarly journals An iterative observer approach to harmonic estimation for multiple measurements in power distribution systems

2015 ◽  
Vol 39 (5) ◽  
pp. 599-610 ◽  
Author(s):  
Awajiokiche Ujile ◽  
Zhengtao Ding ◽  
Haiyu Li
Keyword(s):  
Power System ◽  
Power Distribution ◽  
Distribution System ◽  
Distribution Systems ◽  
Computation Time ◽  
Power Electronic ◽  
Renewable Energy Resources ◽  
Time Data ◽  
Nonlinear Loads ◽  
Mathematical Basis

In the past decade, there has been a significant increase in the use of power electronic components in the design of household and industrial equipment. The use of power electronic based renewable energy resources, electric vehicles and other residential nonlinear loads may result in significant increases in injection levels of harmonics across a power system. Hence, it is important for utility companies to ascertain the exact harmonic levels present in terms of the amplitude and phase of each harmonic order. This paper provides a mathematical basis for distribution system state-space equations to formulate an iterative observer, which can simultaneously estimate harmonics present in a number of measurements taken from the power system. The method not only improves the computation time and provides real-time data for harmonic monitoring, but also performs wide area harmonic estimation for harmonic observability. Simulations and comparisons are provided to illustrate the performance of the proposed method against that obtained using a Kalman filter and fast Fourier transform (FFT). A number of scenarios such as measurement noise and change in amplitude of harmonic injections are simulated to verify the accuracy of the proposed approach and the results are included.

scholarly journals Hybrid Power Electronic Transformer Model for System-Level Benefits Quantification in Energy Distribution Systems

2021 ◽  
Vol 2 ◽  
Author(s):  
Federico Prystupczuk ◽  
Valentín Rigoni ◽  
Alireza Nouri ◽  
Ramy Ali ◽  
Andrew Keane ◽  
...  
Keyword(s):  
Power Flow ◽  
Distribution Systems ◽  
Reactive Power ◽  
Voltage Regulation ◽  
System Level ◽  
Power Electronic ◽  
Electronic Transformer ◽  
Hybrid Power ◽  
Power Electronic Transformer ◽  
Power Electronic Converter

The Hybrid Power Electronic Transformer (HPET) has been proposed as an efficient and economical solution to some of the problems caused by Distributed Energy Resources and new types of loads in existing AC distribution systems. Despite this, the HPET has some limitations on the control it can exert due to its fractionally-rated Power Electronic Converter. Various HPET topologies with different capabilities have been proposed, being necessary to investigate the system benefits that they might provide in possible future scenarios. Adequate HPET models are needed in order to conduct such system-level studies, which are still not covered in the current literature. Consequently, this article presents a methodology to develop power flow models of HPET that facilitate the quantification of controllability requirements for voltage, active power and reactive power. A particular HPET topology composed of a three-phase three-winding Low-Frequency Transformer coupled with a Back-to-Back converter is modeled as an example. The losses in the Back-to-Back converter are represented through efficiency curves that are assigned individually to the two modules. The model performance is illustrated through various power flow simulations that independently quantify voltage regulation and reactive power compensation capabilities for different power ratings of the Power Electronic Converter. In addition, a set of daily simulations were conducted with the HPET supplying a real distribution network modeled in OpenDSS. The results show the HPET losses to be around 1.3 times higher than the conventional transformer losses over the course of the day. The proposed methodology offers enough flexibility to investigate different HPET features, such as power ratings of the Power Electronic Converter, losses, and various strategies for the controlled variables. The contribution of this work is to provide a useful tool that can not only assess and quantify some of the system-level benefits that the HPET can provide, but also allow a network-tailored design of HPETs. The presented model along with the simulation platform were made publicly available.

scholarly journals Advanced control solutions for enhanced resilience of modern power-electronic-interfaced distribution systems

2019 ◽  
Vol 7 (4) ◽  
pp. 716-730 ◽  
Author(s):  
Shiyuan WANG ◽  
Payman DEHGHANIAN ◽  
Mohannad ALHAZMI ◽  
Mostafa NAZEMI
Keyword(s):  
Distribution Systems ◽  
Power Electronic ◽  
Advanced Control
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