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Frequency Control of AC/DC Hybrid Power Grid considering Large-Scale New Energy Integration

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "A1: Smart Grids and Microgrids".

Deadline for manuscript submissions: closed (31 March 2022) | Viewed by 4132

Special Issue Editors

Prof. Dr. Haibo Zhang

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Guest Editor
Department of Electrical and Electronics Engineering, North China Electric Power University, Beijing 102206, China
Interests: new energy power system operation and control; power system dispatching automation; power system economic dispatching
Prof. Dr. Dawei Zhao

E-Mail Website
Guest Editor
Renewable Energy Research Center, China Electric Power Research Institute, Nanjing 210003, China
Interests: modeling; control; and stability analysis of power systems with renewable energy
Prof. Dr. Kaifeng Zhang

E-Mail Website
Guest Editor
School of Automation, Southeast University, Nanjing 210096, China
Interests: power system control; power system optimization; power market
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

New energy, represented by wind power and photovoltaic power, has been integrated into the power grid on a large scale. At the same time, with the approach of carbon balance targets, distributed new energy and offshore wind power are also developing rapidly. The integration of large-scale new energy is changing the traditional transmission mode and power grid structure, such as in the examples of LCC-HVDC, VSC-HVDC, AC/DC hybrid interconnection, and asynchronous interconnection, among others. This brings many new challenges regarding the frequency control in power systems, including the strong volatility and uncertainty of new energy, the lack of flexibility of the system, the reduction in power system inertia, the addition of new energy, energy storage, and HVDC as new frequency modulation resources, and cooperative scheduling control among HVDC interconnection areas.

To address these challenges, this Special Issue sincerely invites scholars to submit manuscripts detailing their latest research and welcomes reviews about local frequency control of new energy units or energy storage, the frequency control of the regional control center, and multi-area frequency coordination control between AC/DC hybrid interconnection areas. Any technologies, methods, or comments on the latest research in this field that can improve the frequency modulation capability or frequency stability of AC/DC hybrid systems with large-scale new energy integration are within the scope of this issue.

Prof. Dr. Haibo Zhang
Prof. Dr. Dawei Zhao
Prof. Dr. Kaifeng Zhang
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. Energies 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 2600 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

  • Performance analysis and modeling of new energy, energy storage or HVDC involved in frequency regulation
  • Primary frequency control considering new energy, energy storage, or HVDC regulation
  • Automatic generation control considering new energy, energy storage, or HVDC regulation
  • Unit commitment and economic dispatch considering new energy, energy storage, or HVDC regulation
  • Coordination control and optimal scheduling between AC/DC hybrid interconnection areas
  • Virtual synchronous generator control for new energy or energy storage
  • Research on virtual power plant, demand response, or other technology which is involved in frequency regulation

Published Papers (2 papers)

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Research

16 pages, 2648 KiB  
Article
The Strategy of Considering the Participation of Doubly-Fed Pumped-Storage Units in Power Grid Frequency Regulation
by Yunfei Wu, Jianfeng Liu and Jian Zhou
Energies 2022, 15(6), 2179; https://0-doi-org.brum.beds.ac.uk/10.3390/en15062179 - 16 Mar 2022
Cited by 2 | Viewed by 1158
Abstract
Facing the challenges of grid stability brought by the large-scale access of new energy to the grid, as one of the important means of frequency regulation of the grid, the doubly-fed pumped-storage units (DFPSU) have great practical significance in the study of the [...] Read more.
Facing the challenges of grid stability brought by the large-scale access of new energy to the grid, as one of the important means of frequency regulation of the grid, the doubly-fed pumped-storage units (DFPSU) have great practical significance in the study of the joint frequency regulation strategy with the thermal power unit (TPU). In order to reduce the frequency regulation pressure on the grid caused by the large-scale entry of new energy sources, this paper proposes a joint frequency regulation strategy for the TPU and DFPSU. Based on establishing the optimal scheduling model of the system, taking into account the minimum total operating cost and the optimal time as goals, the chaotic particle swarm optimization (CPSO) is proposed to solve the model. Finally, through MATLAB simulation, the relevant examples are studied and analyzed, and the simulation results verify that the joint frequency regulation strategy in this paper can effectively improve the frequency regulation performance of the unit and the operation economy is good. Full article
(This article belongs to the Special Issue Frequency Control of AC/DC Hybrid Power Grid considering Large-Scale New Energy Integration)
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15 pages, 2117 KiB  
Article
Inertia Control Strategy of DFIG-Based Wind Turbines Considering Low-Frequency Oscillation Suppression
by Haoming Liu, Suxiang Yang and Xiaoling Yuan
Energies 2022, 15(1), 29; https://0-doi-org.brum.beds.ac.uk/10.3390/en15010029 - 21 Dec 2021
Cited by 6 | Viewed by 2266
Abstract
It has become a basic requirement for wind turbines (WTs) to provide frequency regulation and inertia support. The influence of WTs on the low-frequency oscillation (LFO) of the system will change after adopting inertia control methods. This paper intends to investigate and compare [...] Read more.
It has become a basic requirement for wind turbines (WTs) to provide frequency regulation and inertia support. The influence of WTs on the low-frequency oscillation (LFO) of the system will change after adopting inertia control methods. This paper intends to investigate and compare in detail the IC effects on LFO characteristics in two systems with different structures. First, the mechanism of inertia control of doubly fed induction generator (DFIG)-based WTs is analyzed. Then, the small-signal analysis method and modal analysis method are used to study the influence of the inertia control on the LFO characteristics based on the two-machine infinite-bus system and the four-machine two-area system, respectively. The difference in impact rules of IC on LFO is compared in detail. Finally, considering that the inertia control might worsen the LFO in some systems, an improved inertia control strategy of DFIG-based WTs is proposed to suppress the LFO. The simulation results demonstrate that, in systems with different structures, the impact rules of the inertia control parameters on LFO are different. With the improved inertia control strategy, DFIG-based WTs can suppress the LFO of the system and provide inertia support for the system. Full article
(This article belongs to the Special Issue Frequency Control of AC/DC Hybrid Power Grid considering Large-Scale New Energy Integration)
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