A5080878917- Power Systems and Renewable Energy
- Wind Turbine Control Systems
- HVDC Systems and Fault Protection
- Microgrid Control and Optimization
- Photovoltaic System Optimization Techniques
- High-Voltage Power Transmission Systems
- Energy Load and Power Forecasting
- Islanding Detection in Power Systems
- Real-time simulation and control systems
- Electric Motor Design and Analysis
- Smart Grid and Power Systems
- Power Systems and Technologies
- Wind Energy Research and Development
- Multilevel Inverters and Converters
- Optimal Power Flow Distribution
- Power System Optimization and Stability
- Building Energy and Comfort Optimization
- Wave and Wind Energy Systems
- Scientific Research and Discoveries
- Offshore Engineering and Technologies
- Structural Health Monitoring Techniques
- Simulation and Modeling Applications
- Engineering Applied Research
- Vehicle Noise and Vibration Control
- Superconducting Materials and Applications
Dalian University of Technology
2023-2025
Harbin Institute of Technology
2015-2023
Heilongjiang Institute of Technology
2017-2020
With increasing penetration of wind power, it is recognized that manufacturer-specific models turbines are not appropriate for power system studies, and the equivalent model farms required by dynamic modeling poses a complicated technical challenge. In this paper, practical method with doubly fed induction generator (DFIG) proposed. Three critical steps involved in method. Step 1, turbine, incorporating complete fault ride through process constructed validated an operational DFIG turbine. 2,...
Modular Multilevel Converter based High Voltage Direct Current (MMC-HVDC) connected offshore wind farms could suffer serious challenges: DC overvoltage during a fault and post-fault voltage restoration. In this paper, to mitigate overvoltage, two-stage drop control scheme is proposed for MMC realize fast active power reduction, by coordinating with voltage-dependent current of individual turbines. The depths are designed considering the de-loading efficiency stability WTs. To improve...
An improved single-machine equivalent method is proposed for wind power plants (WPPs) by calibrating the postfault recovery behaviors. A real WPP simulated with extensive scenarios to evaluate traditional model, and it found that its error mainly resulted from process. The simulation analysis further indicates a turbine operating at different speeds restores prefault active certain ramp rate after fault clearance, starting time. Taking two-machine as an example, analytical expression of...
In this paper, an analytical two-machine equivalent method of DFIG-based wind power plants (WPPs) is proposed. Through simulations a 49.5 MW WPP, the root causes errors single-machine are identified. Taking four-machine WPP as example, expressions fault-ride through (FRT) behaviors model and its derived, revealed in theory including: inconsistent transient initial FRT stage; unequal quasi-steady-state active during fault; mismatching points ramp rates after fault clearance. To eliminate...
With increasing penetration of photovoltaic (PV) generation systems, it is significant to develop effective models characterize the dynamic behaviors actual PV systems under balanced and unbalanced fault conditions. To address this issue, massive field tests have been conducted for on-site from different manufacturers. Based on test results, universal low voltage ride-through (LVRT) response waveforms, including pre- post-fault steady states, fault-duration fault-recovery transient are...
With the increasing capacity of photovoltaic (PV) power station, flexibility and security grid face significant challenges. It is necessary for PV station to have capability voltage ride through (VRT). Based on newest technical rule (Q/GDW 1617-2015), control strategies low VRT (LVRT) high (HVRT) are investigated improved here by fitting analysing field test data plant. The LVRT strategy able accurately simulate active ramp recovery process provide dynamic support reactive control. proposed...
An improved single-unit equivalent method is proposed for large photovoltaic power plants (PVPPs) in this paper. The simulation of a 50 MW PVPP indicates that the errors are mainly caused by inconsistence fault ride-through (FRT) behaviors active between detailed model and its traditional model. Taking three-unit as an example, analytical expressions FRT derived, error sources identified: deviation during fault, difference initial after clearance, mismatch post-fault ramp rates. derived then...
In order to guarantee the consistency of operating characteristics at point interconnection, a dynamic equivalent model is proposed for large-scale wind farm with direct-drive permanent magnet synchronous generator (PMSG) turbines, using transient active power response curves interconnection. Firstly, simulation grid-connected PMSG turbine established simulate and analyze its during grid fault PSCAD/EMTDC platform. Two critical issues related modeling are summarized by intensive...
A complete modeling of two-stage photovoltaic (PV) system operating under large grid disturbances is developed in this study. The grid-integrated PV are expected to operate through low voltage and provide reinforcement by delivering the reactive current during dips, as per most standards. Proper references generation appropriate controllers design basis for effective realization ride-through (LVRT) capability. Accordingly, a LVRT strategy based on Chinese code enhance power quality...
As the share of renewable energy in a grid increases, grid’s frequency support capability weakens, and spatial distribution becomes more pronounced. result, control strategies based on system consistency traditional regulation dominated by synchronous machines are becoming increasingly inadequate for meeting requirements new-type power systems. To enhance system’s capability, it is imperative to fully utilize resources within system. address this issue, paper first introduces security...