Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
4.7
2.9
Journals
Electronics
Special Issues
Advances in Modeling, Control and Protection of Power System Containing...
share announcement

Advances in Modeling, Control and Protection of Power System Containing a High Proportion of Power Electronics

A special issue of Electronics (ISSN 2079-9292). This special issue belongs to the section "Industrial Electronics".

Deadline for manuscript submissions: 30 November 2024 | Viewed by 4635

Special Issue Editors

Dr. Jianquan Liao

E-Mail Website
Guest Editor
College of Electrical Engineering, Sichuan University, Chengdu 610065, China
Interests: power system protection and control; power quality of the DC distribution network; power system stability and control
Special Issues, Collections and Topics in MDPI journals
Dr. Xiaoxiao Meng

E-Mail Website
Guest Editor
School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230008, China
Interests: microgrid control; stability analysis of power systems
Dr. Xiaonan Zhu

E-Mail Website
Guest Editor
College of Electrical and Information Engineering, Hunan University, Changsha, China
Interests: DC-AC power converter; multi-level inverter; switching convertors; photovoltaic power systems; leakage currents

Special Issue Information

Dear Colleagues,

In power systems with a high proportion of power electronic devices, significant changes have taken place in regard to modeling, control, and protection. On the one hand, since the fault response of power electronic equipment and the electromagnetic transient process of the power grid occur in the same time scale, it is difficult to accurately analyze the fault characteristics. Therefore,  the difficulty of fault identification has been significantly increased. On the other hand, the coexistence of AC and DC power grids makes their dynamic characteristics influence each other. Additionally, the widespread utilization of power electronic equipment in the power grid improves not only the flexibility of the system operation, but also the correlation between the fault response characteristics of the power grid and the control strategy of power electronic equipment.

This Special Issue will address new challenges and present and disseminate novel technologies related to the design, modeling, and simulation for the planning, operation, control, and protection of distribution power grids with a high share of renewable energies. The topics of interest for publication include, but are not limited to:

  • Fault analysis;
  • Fault detection/diagnosis of power systems;
  • Fault protection of AC or DC grids;
  • Transient analysis;
  • Power electronic device modeling;
  • Fault current suppression;
  • Voltage and current control of power electronic devices;
  • Artificial intelligence and its application in power systems.

Dr. Jianquan Liao
Dr. Xiaoxiao Meng
Dr. Xiaonan Zhu
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Electronics is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • power electronics
  • DC grid
  • fault detection
  • voltage control
  • fault ride through
  • electrical power devices
  • renewable energy
  • protection
  • DC fault
  • fault current

Published Papers (6 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

17 pages, 1125 KiB  
Article
Set-Up for Measuring Thermal Parameters of Power Semiconductor Devices
by Krzysztof Górecki, Przemysław Ptak, Paweł Górecki and Aleksander Data
Electronics 2024, 13(9), 1636; https://doi.org/10.3390/electronics13091636 - 24 Apr 2024
Abstract
In order to determine the junction temperature of semiconductor devices operating at different power supply and cooling conditions, their thermal parameters are needed. This article describes an original measurement set-up enabling the determination of thermal parameters of power semiconductor devices. In contrast to [...] Read more.
In order to determine the junction temperature of semiconductor devices operating at different power supply and cooling conditions, their thermal parameters are needed. This article describes an original measurement set-up enabling the determination of thermal parameters of power semiconductor devices. In contrast to other set-ups described in the literature, this set-up makes it possible to measure thermal parameters which characterize the efficiency of the removal generated due to a self-heating phenomenon, as well as the parameters characterizing mutual thermal couplings. The presented set-up makes use of an indirect electrical method to determine the junction temperature of diodes, bipolar and unipolar transistors and IGBTs. The methods used to measure the self and transfer transient thermal impedances of these devices and the construction of the set-up are described. The influence of selected factors on the accuracy of the measurements is analyzed. Examples of the measurement results of thermal parameters (self and transfer transient thermal impedances) of power semiconductor devices operating at different cooling conditions are presented. The obtained research results are discussed. Full article
(This article belongs to the Special Issue Advances in Modeling, Control and Protection of Power System Containing a High Proportion of Power Electronics)
22 pages, 6615 KiB  
Article
Application of a Centroid Frequency-Based Back Propagation Neural Network Fault Location Method for a Distribution Network Considering Renewable Energy Assessment
by Ruifeng Zhao, Jiangang Lu, Qizhan Chen, Niancheng Zhou and Haoyu Liu
Electronics 2024, 13(8), 1491; https://doi.org/10.3390/electronics13081491 - 14 Apr 2024
Viewed by 377
Abstract
The distribution network is a crucial component of the power system as it directly connects to users and serves the purpose of distributing power and balancing the load. With the integration of new energy sources through distributed generation (DG), the distribution network has [...] Read more.
The distribution network is a crucial component of the power system as it directly connects to users and serves the purpose of distributing power and balancing the load. With the integration of new energy sources through distributed generation (DG), the distribution network has undergone a transformation from a single power radial network into a complex multi-source network. Consequently, traditional fault location methods have proven inadequate in this new network structure. Therefore, the focus of this paper is to investigate fault location techniques specifically tailored for DG integration into distribution networks. This paper analyzes how fault conditions impact the characteristics of single-phase grounding faults and extracts spectral feature quantities to describe differences in zero-sequence currents under various fault distances. This paper also proposes a fault location method based on centroid frequency and a BPNN (back propagation neural network). The method uses centroid frequency to describe the features of zero-sequence currents; to simulate the mapping relationship between fault conditions and spectral features, BPNN is employed. The mapping relationship differs for different lines and distribution networks. When a line faults, the spectral features are calculated, along with the transition resistance and fault closing angle. The corresponding mapping relationship is then called upon to complete distance measurements. This location method can be applied to various types of distribution lines and fault conditions with high accuracy. Even with insufficient training samples, sample expansion can ensure accuracy in fault distance measurement. We built a distribution network consisting of four feeders with different types and lengths of each line on Simulink and verified the effectiveness of the proposed method by setting different fault conditions. The results suggest that the method has a clear advantage over other frequency domain-based approaches, especially for hybrid lines and feeder lines with branches in distribution networks. Additionally, the method achieves a measurement accuracy within a range of 100 m. Full article
(This article belongs to the Special Issue Advances in Modeling, Control and Protection of Power System Containing a High Proportion of Power Electronics)
►▼ Show Figures

Figure 1

20 pages, 965 KiB  
Article
Research on the Short-Term Economic Dispatch Method of Power System Involving a Hydropower-Photovoltaic-Pumped Storage Plant
by Liang Guo, Shudi Liu, Litang Xi, Guofang Zhang, Ziqi Liu, Qi Zeng, Feipeng Lü and Yuhong Wang
Electronics 2024, 13(7), 1282; https://doi.org/10.3390/electronics13071282 - 29 Mar 2024
Viewed by 352
Abstract
The auxiliary regulation capacity of pumped-storage power stations can be utilized as an effective method to regulate the output of a hydro-photovoltaic complementary system, further mitigating the power fluctuations of the system and enhancing the photovoltaic absorption. This study aims to minimize power [...] Read more.
The auxiliary regulation capacity of pumped-storage power stations can be utilized as an effective method to regulate the output of a hydro-photovoltaic complementary system, further mitigating the power fluctuations of the system and enhancing the photovoltaic absorption. This study aims to minimize power fluctuations and maximize the economic benefits of electricity generation in a hydropower-photovoltaic-pumped-storage complementary system (HPPCS), which are treated as the objective functions. It explores the participation of the HPPCS in grid active power balance auxiliary services. By modulating the participation ratio of the HPPCS in the grid’s active balance service, the system output is aligned to fluctuate proportionally with the daily load curve trend. Consequently, a short-term economic dispatch model for the integrated HPPCS is developed. The case study focuses on the considerable impact of weather conditions on photovoltaic (PV) power generation. In this model, the outputs of cascading hydro-power stations and pumped-storage power stations are considered as the decision variables. A decomposition-based multi-objective evolutionary algorithm is applied to derive an optimized intra-day dispatch Pareto solution set for the cascading HPPCS in each of these scenarios. Additionally, this study compares the Pareto solution sets for the HPPCS in various extents of its participation in grid auxiliary services. The results of the case study suggest that the system is capable of timely adjustments during the peak and trough periods of load demand. Considering the economic benefits, it enables the pumped-storage station to generate electricity for the grid during periods of high electricity prices and to store energy by pumping water when prices are low. Full article
(This article belongs to the Special Issue Advances in Modeling, Control and Protection of Power System Containing a High Proportion of Power Electronics)
►▼ Show Figures

Figure 1

17 pages, 3149 KiB  
Article
Method of Multi-Energy Complementary System Participating in Auxiliary Frequency Regulation of Power Systems
by Dawei Zhang, Gang Chen, Guo Guo, Yongcan Wang, Feipeng Lv, Yuhong Wang and Shilin Gao
Electronics 2024, 13(5), 906; https://doi.org/10.3390/electronics13050906 - 27 Feb 2024
Viewed by 485
Abstract
This research investigates a grid with two areas interconnected by a high-voltage direct-current (DC) link. One of the areas, called the sending-end region, has intermittent renewable generation and frequency stability issues. To address the lack of frequency-regulation (FR) resources in the sending-end region [...] Read more.
This research investigates a grid with two areas interconnected by a high-voltage direct-current (DC) link. One of the areas, called the sending-end region, has intermittent renewable generation and frequency stability issues. To address the lack of frequency-regulation (FR) resources in the sending-end region of the interconnected grid, the participation of hydroelectricity–photovoltaics and pumped storage complementary systems (HPPCSs) in auxiliary frequency-regulation (AFR) services is studied in the context of the construction of the electricity market. Firstly, the HPPCS participating in AFR services considering DC modulation is modeled by combining the operational characteristics of the actual power station. Taking the purchase cost of auxiliary service as the objective function, the optimum allocation of FR scheduling demand is achieved by the proposed method. The simulations confirm that the proposed method of HPPCS participation in the AFR service of the sending-end grid can effectively maintain the frequency stability of the regional interconnected grid while ensuring optimal economic efficiency. The proposed method provides the optimal scheduling solution for multiple energy resources participating in the AFR service of the grid. Full article
(This article belongs to the Special Issue Advances in Modeling, Control and Protection of Power System Containing a High Proportion of Power Electronics)
►▼ Show Figures

Figure 1

17 pages, 14693 KiB  
Article
A Soft-Start-Based Method for Active Suppression of Magnetizing Inrush Current in Transformers
by Chunyan Li, Yi Yang, Wenyan Li and Haixiao Li
Electronics 2023, 12(14), 3114; https://doi.org/10.3390/electronics12143114 - 18 Jul 2023
Cited by 2 | Viewed by 1243
Abstract
The occurrence of high-amplitude magnetizing inrush current during the energization of a transformer without load poses significant challenges to the stable operation of both the transformer and the power grid, potentially leading to malfunctions in relay protection devices. This paper analyzes the underlying [...] Read more.
The occurrence of high-amplitude magnetizing inrush current during the energization of a transformer without load poses significant challenges to the stable operation of both the transformer and the power grid, potentially leading to malfunctions in relay protection devices. This paper analyzes the underlying mechanisms of transformer inrush current and presents a novel approach utilizing a soft-start-based method for effectively suppressing inrush currents. The proposed method employs an inrush current suppressor comprising anti-parallel thyristors and filters to mitigate the adverse effects caused by the inrush current. A comparative study is conducted to evaluate the filtering efficacy of three types of filters incorporated in the inrush current suppressor: an LCLC damping filter, a high-order single trap filter and a high-order double trap filter. Through careful analysis and optimization, the high-order double trap filter with parallel RC damping damper is selected as the optimal configuration. To ensure effective suppression, it is necessary to incorporate a filter at the termination point of the anti-parallel thyristor. Additionally, a closed-loop control strategy is implemented to ensure a smooth start and actively suppress the magnetizing inrush current. To validate the effectiveness of the proposed method, comprehensive simulations are performed using Matlab/Simulink. The results demonstrate the successful suppression of inrush current and the maintenance of stable operation for the transformer. This inrush suppression method does not require considering the influence of residual magnetism and the grounding mode of the transformer’s neutral point. It is also suitable for various transformer structures and wiring methods, which makes it highly applicable. Full article
(This article belongs to the Special Issue Advances in Modeling, Control and Protection of Power System Containing a High Proportion of Power Electronics)
►▼ Show Figures

Figure 1

26 pages, 6931 KiB  
Article
Fault Detection and Zonal Protection Strategy of Multi-Voltage Level DC Grid Based on Fault Traveling Wave Characteristic Extraction
by Yuqi Han, Ruiguang Ma, Ting Li, Wenhui Zeng, Yangtao Liu, Yuhong Wang, Chunsheng Guo and Jianquan Liao
Electronics 2023, 12(8), 1764; https://doi.org/10.3390/electronics12081764 - 07 Apr 2023
Cited by 3 | Viewed by 1401
Abstract
Currently, DC breakers are commonly used in mainstream protection schemes for DC grids to eliminate faults. However, the cost of high voltage DC (HVDC) breakers is high, and equipping each DC line with DC breakers is expensive. In order to minimize the number [...] Read more.
Currently, DC breakers are commonly used in mainstream protection schemes for DC grids to eliminate faults. However, the cost of high voltage DC (HVDC) breakers is high, and equipping each DC line with DC breakers is expensive. In order to minimize the number of DC breakers while ensuring the reliability of the power supply, a zonal protection strategy suitable for multi-voltage level DC grids is proposed. Subsequently, the qualitative impact of partial power interruption caused by fault DC areas is analyzed in the system. The basic zonal principle of the multi-voltage level DC grid is formulated, taking into account unbalanced power, the mode of system-level control, and the type of converters. Additionally, a time sequence coordination strategy is derived in detail based on the characteristics of DC breakers, AC/DC converters, DC/DC converters, AC breakers, high-speed switches, and other fault removal components. Finally, a seven-terminal DC grid is modeled in the PSCAD/EMTDC simulation platform. According to the simulation analysis, the DC grid can adopt the converter with fault clearing ability or an AC circuit breaker to cooperate with the fast disconnector (FD) to complete fault clearing in the DC fault area under the proposed zonal protection coordination strategy. Full article
(This article belongs to the Special Issue Advances in Modeling, Control and Protection of Power System Containing a High Proportion of Power Electronics)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-6
Back to TopTop