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Publications (44)
In order to address the challenges posed by the integration of regional electric vehicle (EV) clusters into the grid, it is crucial to fully utilize the scheduling capabilities of EVs. In this study, to investigate the energy storage characteristics of EVs, we first established a single EV virtual energy storage (EVVES) model based on the energy st...
Floating photovoltaic (FPV) power generation technology has gained widespread attention due to its advantages, which include the lack of the need to occupy land resources, low risk of power limitations, high power generation efficiency, reduced water evaporation, and the conservation of water resources. However, FPV systems also face challenges, su...
The goal of "carbon peak, carbon neutral" and the increasing expansion of new energy have helped to advance the development of energy storage. However, since the operating cost of energy storage is high, carbon emission trading and power market trading have emerged, effectively improving the efficiency. In this paper, a trading strategy and bidding...
Against the backdrop of the gradual advancement of China's electricity market reform, the number of Power Trading Companies in China has been increasing year by year, and as of October 2022, the number has reached more than 10,000. As an important hub connecting the electricity market and users, electricity retailers face double risks from downstre...
With the continuous expansion of grid nodes, traditional centralized methods exhibit certain limitations in the amount of communication data and computational cost for state estimation. In the past few decades, distributed state estimation has been fully developed in multi-area smart grid (SG). According to different areas or electrical equipment,...
In this paper, Discrete Ferrite Rings (DFRs) applied to Cylindrical Solenoid Coupler (CSC) is proposed. The coupling coefficient between adjacent coils is enhanced and the inductance of the coils is increased by reducing the reluctance in the magnetic circuit. The DFRs-based CSCs magnetic structure is considered to be applied for post insulators. T...
Sustainability can achieve a balance among economic prosperity, social equity, and environmental protection to ensure the sustainable development and happiness of current and future generations; photovoltaic (PV) power, as a clean, renewable energy, is closely related to sustainability providing a reliable energy supply for sustainable development....
Island microgrids play a crucial role in developing and utilizing offshore renewable energy sources. However, high operation costs and limited operational flexibility are significant challenges. To address these problems, this paper proposes a novel dual−layer distributed optimal operation methodology for islanded microgrids. The lower layer is a d...
With the development of ship electrification, the demand for energy in ports is increasing. The location and natural resources of ports also create conditions for the development of ship electrification. This paper firstly analyzes the current development status of floating solar power generation technology and offshore wind power generation techno...
In recent years, due to the global energy crisis, increasingly more countries have recognized the importance of developing clean energy. Offshore wind energy, as a basic form of clean energy, has become one of the current research priorities. In the future, offshore wind farms will be developed in deep and distant sea areas. In these areas, there i...
With the increasing penetration of renewable energy, virtual power plants (VPP) reduce the impact on the power grid by integrating massive distributed resources for unified management. However, the optimal scheduling of a large number of distributed resources in VPP has become a new problem in recent years. Therefore, aiming at the real‐time optima...
A novel topology-reconfigurable LLC resonant converter for wide output range applications is proposed in this article. In the proposed wide output converter, a reconfigurable topology based on matrix transformer is presented, the primary sides of the matrix transformer are connected in parallel, the connection of the secondary sides can be changed...
Pumped storage power plant (PSPP) has the upper hand on economy and cleanness. It also has the functions of frequency regulation, phase regulation, and spare, which have been instrumental in maintaining the stability of power system operation. But now the mechanism for PSPP to become involved in electricity market transactions in China is imperfect...
In view of the large-scale electricity demand of magnesite electrolytic and the problem of co-generation under the restriction of “power based on heat”, given full play to the operational advantages of multi-source interconnection and overall scheduling in the integrated energy system, an integrated energy system that includes large-scale industria...
Zhen Liu He Wang Bowen Zhou- [...]
Bo Hu
In this study, we utilize the advantages of offshore wind power resources in coastal areas to make up for the shortage of freshwater. At the same time, freshwater can be used as raw material to supply hydrogen energy. An operation strategy considering power and water input for an electrolyzer is proposed and an electrolyzer variable efficiency mode...
Due to the shortage of freshwater and energy crisis, seawater desalination with renewable energy has been proposed. A method for determining optimal planning of coastal hybrid renewable energy system (HRES) is proposed in this paper. Firstly, the system composition is introduced, and the virtual energy storage (VES) characteristics of the seawater...
A novel topology-reconfigurable two-and- single stage AC-DC converter with fault-tolerant capability for high reliability applications is proposed in this paper. In the proposed converter, two bidirectional switches are used to connect the midpoints of the bridge branches between the rectifier stage and the DC-DC stage, and the proposed converter c...
A multi-outputs DC-DC topology based on hybrid modulation of pulse frequency modulation and phase shift is proposed in this paper. The proposed hybrid modulated multi-outputs converter is derived from the integration of a three-phase LLC resonant converter and the full bridge converter. With the hybrid modulation, the multi outputs are controlled i...
In the context of the current development of active distribution grids, flexible loads including seawater desalination have been introduced into the distribution grid as important resources in order to improve the ability of source-grid-load interaction. This paper focuses on the seawater desalination loads, and comprehensively considers the demand...
Hua Li Bo Hu Yubo Liu- [...]
Bowen Zhou
Power big data-based artificial intelligence or data mining methods, which can be used to analyze electricity consumption behavior, have been widely applied to provide targeted marketing services for electricity consumers. However, the traditional clustering algorithm has difficulty in judging new electricity consumption patterns. Deep neural netwo...
In order to realize the calculation of the line loss of the distribution network with complex structure and low-voltage station area, this paper presents a line loss calculation method based on BP neural network with genetic algorithm optimization. The proposed method is based on the actual operation data of the distribution network. Firstly, build...
This letter proposes an online capacitance estimation method for the modular multilevel converter. In the prevalent methods, the inherent second-order circulating current or the injected low-frequency current/voltage component is utilized to calculate the submodule (SM) capacitance. In this letter, the relationship between the voltage variation of...
This paper proposes a novel interleaved three-phase PWM single-stage resonant AC-DC converter with high-frequency isolation. The proposed converter comes from an interleaved three-phase PFC semi-stage and a three-phase LLC resonant DC-DC semi-stage. Soft-switching commutation can be achieved on the power switches in this converter including zero-vo...
A switching state sequences (SSSs) based modulation scheme along with a dead-time effect compensation method is proposed in this paper. In the proposed modulation scheme, the converter’s switching states changing sequence in one carrier period, i.e. the SSS, is treated as the basic unit to control the T-type 5L-ANPC converter. Because there are onl...
This paper proposes a novel single-phase single-stage AC-DC converter with high-frequency isolation and power factor correction. Unlike the two-stage AC-DC converters, the high frequency pulsating voltage is obtained directly from the PFC semi-stage and is applied directly to the DC-DC semi-stage. The proposed topology is designed to be operated in...
A novel pulse frequency and phase shift hybrid modulated dual output DC-DC converter is proposed in this paper. The proposed converter is composed of hybrid modulation of an input-parallel-output-series LLC resonant converter and a phase-shift full bridge converter. The output voltage of the LLC resonant converter is regulated by the switching freq...
In this paper a new voltage balancing strategy based on improved carrier-phase-shifted pulse width modulation (CPS-PWM) scheme and fundamental frequency sorting algorithm (FFSA) is proposed. FFSA is a salient method which sorts the capacitor voltages at fundamental frequency and utilizes the different charging ability of driving signals to converge...
Droop control strategy is widely applied in AC microgrid to realize the seamless mode transition and achieve average power sharing among different inverters. However, there is a lack of analysis about the operation performance of droop control strategy in grid-connected mode. In this paper, grid fluctuation and control accuracy of reactive power ar...
The droop-based control strategy is widely applied in the interfacing inverters for distributed generation. This can be a problem since low-frequency stability issues may be encountered in droop-based microgrid. The objective of this paper is to classify, evaluate and compare various low-frequency damping methods. First, low-frequency stability pro...