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Advanced Electric Energy Conversion and Operation Control Technology of Power Distribution System with High Proportion of Renewables and Power Electronics

A special issue of Sustainability (ISSN 2071-1050). This special issue belongs to the section "Energy Sustainability".

Deadline for manuscript submissions: closed (31 December 2023) | Viewed by 7373

Special Issue Editors

Dr. Fei Jiang

E-Mail Website
Guest Editor
School of Electrical & Information Engineering, Changsha University of Science & Technology, Changsha 410114, China
Interests: new energy power electronics technology; intelligent distribution network; flexible power regulation
Dr. Qi Guo

E-Mail Website
Guest Editor
Institute of Electrical and Information Engineering, Hunan University, Changsha 410082, China
Interests: distribution network flexible power regulation technology; advanced power quality control technology; distributed energy and microgrid

Special Issue Information

Dear Colleagues,

With the rapid development of “carbon-peaking and carbon-neutrality” strategies, the “source-network-load” of a distribution network in the “last mile” of new power systems is undergoing a disruptive change. Great uncertainty is brought to the distribution system by the high proportion of distributed flexible resources such as wind power, photovoltaic power, energy storage and charging piles. At the same time, a new opportunity for enriching the regulation mode and improving the controllability level of power distribution systems is also provided. It is necessary to give full play to the flexible regulatory potential and spatio-temporal complementarity of multiple heterogeneous distributed resources, so as to realize friendly grid connection and the collaborative interaction of distributed flexible resources with a high proportion of “source-network-load”. Then, the energy consumption and operation control ability of new distribution system can be improved significantly.

To this end, we have organized this Special Issue entitled “Advanced Electric Energy Conversion and Operation Control Technology of Power Distribution System with High Proportion of Renewables and Power Electronics”. Scholars and researchers engaged in related research are invited to contribute to the discussion of new theories, new methods and new technologies in this field, and to promote technological development in this field. In this Special Issue, original research articles and reviews are welcome. Research areas may include (but are not limited to) the following:

  • Analysis, perception and prediction of power characteristics for renewables and flexible loads;
  • High-performance and low-cost implementation technology of DC/DC, DC/AC, and AC/DC converters for renewables and flexible loads;
  • Grid-friendly connection and active support technology of distributed flexible resources in power distribution systems with high shares of renewables and power electronics;
  • Operation control optimization technology of power distribution system with a high proportion of renewables and flexible loads;
  • New control and protection technology under typical faults of power distribution systems with a high proportion of renewables and flexible loads.

We look forward to receiving your contributions.

Dr. Fei Jiang
Dr. Qi Guo
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. Sustainability 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 distribution system
  • renewable energy
  • electric vehicle
  • distributed energy storage
  • power electronic technology
  • operation optimization

Published Papers (7 papers)

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Research

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21 pages, 7317 KiB  
Article
A Method to Improve Both Frequency Stability and Transient Stability of Virtual Synchronous Generators during Grid Faults
by Wanli Yang, Chunming Tu, Fan Xiao and Jiaqi Yu
Sustainability 2024, 16(5), 1769; https://doi.org/10.3390/su16051769 - 21 Feb 2024
Viewed by 678
Abstract
Transient stability and frequency stability of virtual synchronous generator (VSG)-controlled converters during grid faults are critical for the stable operation of high-share renewable energy power systems. However, the existing transient stability methods often overlook the consideration of frequency stability. This paper presents a [...] Read more.
Transient stability and frequency stability of virtual synchronous generator (VSG)-controlled converters during grid faults are critical for the stable operation of high-share renewable energy power systems. However, the existing transient stability methods often overlook the consideration of frequency stability. This paper presents a method to improve both frequency stability and transient stability of VSGs during grid faults. The influence mechanism of inertia and damping on transient stability and frequency stability is comprehensively analyzed under two types of faults, with or without stable equilibrium points. To address the conflict between frequency stability and transient stability of VSGs with large inertia under the first type of fault, an improved VSG control with angular frequency deviation feedback is proposed. The transient response of this control method is analyzed using small-signal and large-signal models. Furthermore, to achieve optimal dynamic performance, this improved VSG control introduces the optimal damping ratio and presents a parameter design method. Finally, the correctness of the proposed method and its theoretical analysis is verified through experimental results. Full article
(This article belongs to the Special Issue Advanced Electric Energy Conversion and Operation Control Technology of Power Distribution System with High Proportion of Renewables and Power Electronics)
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19 pages, 3712 KiB  
Article
Fast and Robust State Estimation for Active Distribution Networks Considering Measurement Data Fusion and Network Topology Changes
by Dai Wan, Miao Zhao, Guidong He, Liang Che, Qi Guo and Qianfan Zhou
Sustainability 2023, 15(18), 13800; https://doi.org/10.3390/su151813800 - 15 Sep 2023
Viewed by 814
Abstract
With the integration of distributed generations (DGs), distribution networks are being transformed into active distribution networks (ADNs). Due to ADNs‘ complex operational scenarios, massive data, and fast-changing network topologies, traditional state-estimation (SE) methods are inadequate to meet the requirements of computational accuracy, computational [...] Read more.
With the integration of distributed generations (DGs), distribution networks are being transformed into active distribution networks (ADNs). Due to ADNs‘ complex operational scenarios, massive data, and fast-changing network topologies, traditional state-estimation (SE) methods are inadequate to meet the requirements of computational accuracy, computational speed, and robustness. Aiming at the SE of ADNs, this paper proposes a data-driven and classic-model-integrated SE method, which uses an SE neural network (NN) to perform an initial estimation, and then uses linear SE to refine the estimation. It applies PMU and SCADA data fusion and is robust to noise and ADN topology changes. The simulations on the IEEE standard system verify that the proposed method is superior to traditional SE methods in terms of estimation accuracy, calculation speed, and robustness. This study provides ADNS with a new effective estimation scheme, which is of great significance in the context of promoting the development of renewable energy. Full article
(This article belongs to the Special Issue Advanced Electric Energy Conversion and Operation Control Technology of Power Distribution System with High Proportion of Renewables and Power Electronics)
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27 pages, 4727 KiB  
Article
Risk Assessment for Energy Stations Based on Real-Time Equipment Failure Rates and Security Boundaries
by Yongheng Luo, Zhonglong Li, Sen Li and Fei Jiang
Sustainability 2023, 15(18), 13741; https://doi.org/10.3390/su151813741 - 14 Sep 2023
Cited by 4 | Viewed by 863
Abstract
In the context of China’s 2020 dual carbon goals of peak CO2 emissions by 2030 and carbon neutrality by 2060, the security of multi-energy systems is increasingly challenged as clean energy continues to be supplied to the system. This paper proposes a [...] Read more.
In the context of China’s 2020 dual carbon goals of peak CO2 emissions by 2030 and carbon neutrality by 2060, the security of multi-energy systems is increasingly challenged as clean energy continues to be supplied to the system. This paper proposes a risk assessment and enhancement strategy for distributed energy stations (DESs) based on a security boundary. First, based on the coupling relationship between different energy sources and combining the mutual support relationships between different pieces of equipment, a security boundary for DESs was constructed. Second, based on the characteristics of different sources of equipment failure, the real-time failure probabilities of equipment and pipelines were calculated in order to obtain the security risks of DES operation states based on the security boundary. Finally, for equipment and pipelines at high risk, an economic security enhancement strategy is proposed, and the Pareto solution set is solved using a multi-objective algorithm. The analysis shows that the proposed method can effectively quantify the security risks of energy systems in real time, and the proposed enhancement strategy takes into account both economics and system security. Full article
(This article belongs to the Special Issue Advanced Electric Energy Conversion and Operation Control Technology of Power Distribution System with High Proportion of Renewables and Power Electronics)
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17 pages, 2851 KiB  
Article
Optimization Method of Energy Storage Configuration for Distribution Network with High Proportion of Photovoltaic Based on Source–Load Imbalance
by Fangfang Zheng, Xiaofang Meng, Tiefeng Xu, Yongchang Sun and Hui Wang
Sustainability 2023, 15(13), 10628; https://doi.org/10.3390/su151310628 - 5 Jul 2023
Cited by 2 | Viewed by 954
Abstract
After a high proportion of photovoltaic is connected to the distribution network, it will bring some problems, such as an unbalanced source and load and voltage exceeding the limit. In order to solve them, this paper proposes an optimization method of energy storage [...] Read more.
After a high proportion of photovoltaic is connected to the distribution network, it will bring some problems, such as an unbalanced source and load and voltage exceeding the limit. In order to solve them, this paper proposes an optimization method of energy storage configuration for a high-proportion photovoltaic distribution network considering source–load imbalance clustering. Taking the minimum total voltage deviation, the minimum total power loss and the minimum total operating cost as the objective function, and considering various constraints such as power balance constraints and energy storage operation constraints, a mathematical model for energy storage configuration optimization is established. Firstly, the source–load imbalance of the distribution network with a high proportion of photovoltaic is defined. Therefore, according to the 24 h photovoltaic and load data, the 24 h source–load imbalance can be obtained, and the optimal k value can be determined by the elbow rule, so that 24 h a day can be clustered into k periods by the k-means algorithm. Then, the fuzzy comprehensive evaluation method is used to determine the weight factors of each objective function in each period, and three scenes are determined according to the different amount of energy storage. Then, the hybrid particle swarm optimization algorithm proposed in this paper is used to solve the model, and the minimum objective function value, optimal position and optimal capacity of each energy storage grid in each scene are obtained. Finally, it is applied to an example of IEEE33. In the results, the total voltage deviation is increased by more than 10%, the total power loss is increased by more than 8% and the total operating cost is increased by more than 12%, which verifies the effectiveness of the proposed model. Full article
(This article belongs to the Special Issue Advanced Electric Energy Conversion and Operation Control Technology of Power Distribution System with High Proportion of Renewables and Power Electronics)
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16 pages, 6527 KiB  
Article
Fault Seamless Self-Healing Method of Regional Distributed Network Based on the Cooperation of Source-Load-Storage
by Chengzhi Wei, Chunming Tu, Weiwei Song and Fan Xiao
Sustainability 2023, 15(10), 8099; https://doi.org/10.3390/su15108099 - 16 May 2023
Viewed by 956
Abstract
The large-scale development of distributed generators poses challenges to the operation of distribution networks in remote areas. The power grid structure of the regional distributed networks in remote areas is relatively weak. When a fault occurs in the connecting channel, the regional distributed [...] Read more.
The large-scale development of distributed generators poses challenges to the operation of distribution networks in remote areas. The power grid structure of the regional distributed networks in remote areas is relatively weak. When a fault occurs in the connecting channel, the regional distributed network may be separated from the main grid and become an island. Those distributed generators not only cannot maintain stable operation of the island but may lead to reclosing failure. This may lead to power interruption of important loads. Aiming at the demand for continuous power supply of important loads in regional distributed networks, a self-healing control method based on the cooperation of source-load-storage is proposed in this paper. The characteristics of the regional distributed network are analyzed first. A real-time island stability control method based on the operating conditions combined with regulation with tripping is proposed. This method comprehensively evaluates the self-healing ability of the regional distributed network after the island. The regulation strategy is adopted preferentially to realize the stable operation of the island without losing any load. When the regulation ability is insufficient, the strategy combines regulation and tripping. Considering the importance of load and source-load ratio, and according to the real-time power of each feeder, the optimal feeders are cut off. The purpose of island stability control of the regional distributed network was achieved. In this way, the load loss is minimized, and the speed of island re-connection to the grid is also accelerated. The seamless power supply of important loads in a regional distributed network is guaranteed. A complex Hardware-in-Loop simulation test platform of RTDS is built to verify the correctness of the proposed method. Full article
(This article belongs to the Special Issue Advanced Electric Energy Conversion and Operation Control Technology of Power Distribution System with High Proportion of Renewables and Power Electronics)
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18 pages, 3799 KiB  
Article
A Multi-Subject Game-Based Operation Strategy for VPPs Integrating Wind-Solar-Storage
by Hengyu Liu, Qingqi Zhao, Yang Liu, Zuoxia Xing, Dawei Hu, Pengfei Zhang, Zhi Zhang and Jiazheng Sun
Sustainability 2023, 15(7), 6278; https://doi.org/10.3390/su15076278 - 6 Apr 2023
Cited by 4 | Viewed by 1332
Abstract
Along with the continuous development of renewable energy sources (RES) such as wind power and photovoltaic, a large proportion of RES were connected to the power grid. However, the volatility and intermittency of RES threaten the safe and stable operation of the power [...] Read more.
Along with the continuous development of renewable energy sources (RES) such as wind power and photovoltaic, a large proportion of RES were connected to the power grid. However, the volatility and intermittency of RES threaten the safe and stable operation of the power system. Virtual power plants (VPPs) were introduced to solve such problems. In order to study the cooperation mode of integrating wind-solar-storage for multi VPPs, this paper established multi-objective individual and joint dispatching model for single VPP and multi VPPs with wind-solar-storage, respectively. Then, this paper analyzed the cooperation and the fair distribution of benefits between VPPs. By establishing the competitive strategies of the participating subjects and integrating the Shapley value to effectively distribute the benefits, the cooperative game theory was applied to effectively enhance the benefit in the VPP, to maximize the economic benefits, and to reduce the RES uncertainty risks and carbon emissions, which provided new ideas for the subsequent research on the optimal operation of RES and their engineering applications. NSGA-II was adopted to solve the multi-objective optimization problem. The strategy achieved a 10.1% reduction on the original peak load. It could effectively reduce the peak load of the VPP and ensure the accuracy of load regulation, to reach 12% of the total capacity of the VPP. Full article
(This article belongs to the Special Issue Advanced Electric Energy Conversion and Operation Control Technology of Power Distribution System with High Proportion of Renewables and Power Electronics)
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16 pages, 6252 KiB  
Essay
Joint Control Strategy of Energy Storage System and Cutting Machine for Transient Stability of Direct Current Locking Rear Delivery Terminal System
by Chao Xing, Jiajie Xiao, Peiqiang Li, Xinze Xi, Yunhe Chen and Qi Guo
Sustainability 2023, 15(15), 11960; https://doi.org/10.3390/su151511960 - 3 Aug 2023
Viewed by 801
Abstract
With the gradual operation of large-capacity HVDC transmission, HVDC), the characteristics of the “strong and weak communication” of the power grid are increasingly obvious. The power impact of the DC line after locking has a great impact on the power angle stability of [...] Read more.
With the gradual operation of large-capacity HVDC transmission, HVDC), the characteristics of the “strong and weak communication” of the power grid are increasingly obvious. The power impact of the DC line after locking has a great impact on the power angle stability of the system and seriously threatens the transient stability of the delivery end system. By establishing the equivalent model of the AC/DC system with the energy storage power station and analyzing the transient process after DC locking, we propose a control strategy for the transient stability of the energy storage system and the delivery system after DC locking. This strategy controls the charge and discharge of the energy storage system by collecting real-time power angle and voltage data of the grid, uses the equal area rule, and initiates the cutting machine after the energy storage system is withdrawn. To verify the validity and correctness of the proposed method, a simulation analysis was performed in a modified cross-flow CEPRI-36 node AC–DC system. Full article
(This article belongs to the Special Issue Advanced Electric Energy Conversion and Operation Control Technology of Power Distribution System with High Proportion of Renewables and Power Electronics)
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