Grid code compliance assessment methods for grid connection of wind and PV power plants

2021 ◽  
Keyword(s):  
Power Plants ◽  
Assessment Methods ◽  
Compliance Assessment ◽  
Grid Connection ◽  
Code Compliance

scholarly journals Electromechanical Design of Synchronous Power Controller in Grid Integration of Renewable Power Converters to Support Dynamic Stability

Energies ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 2115
Author(s):  
Mostafa Abdollahi ◽  
Jose Ignacio Candela ◽  
Andres Tarraso ◽  
Mohamed Atef Elsaharty ◽  
Elyas Rakhshani
Keyword(s):  
Dynamic Stability ◽  
Power Plants ◽  
Power Converters ◽  
Power Grids ◽  
Synchronous Generators ◽  
Power Controller ◽  
Renewable Power ◽  
Grid Connection ◽  
Control Technologies ◽  
Control Layer

Nowadays, modern power converters installed in renewable power plants can provide flexible electromechanical characteristics that rely on the developed control technologies such as Synchronous Power Controller (SPC). Since high renewable penetrated power grids result in a low-inertia system, this electromechanical characteristic provides support to the dynamic stability of active power and frequency in the power generation area. This goal can be achieved through the proper tuning of virtual electromechanical parameters that are embedded in the control layers of power converters. In this paper, a novel mathematical pattern and strategy have been proposed to adjust dynamic parameters in Renewable Static Synchronous Generators controlled by SPC (RSSG-SPC). A detailed dynamic modeling was obtained for a feasible design of virtual damping coefficient and virtual moment of inertia in the electrometrical control layer of RSSG-SPC’s power converters. Mathematical solutions, modal analysis outcomes, time-domain simulation results, and real-time validations of the test in IEEE-14B benchmark confirm that the proposed method is an effective procedure for the dynamic design of RSSG-SPC to provide these dynamic stability supports in grid connection.

scholarly journals Novel grid connection interface for utility-scale PV power plants based on MMC

2019 ◽  
Vol 2019 (16) ◽  
pp. 2683-2686 ◽  
Author(s):  
Pan Wu ◽  
Wentao Huang ◽  
Nengling Tai
Keyword(s):  
Power Plants ◽  
Grid Connection ◽  
Utility Scale

scholarly journals Optimal Operation Modes of Virtual Power Plants Based on Typical Scenarios Considering Output Evaluation Criteria

Energies ◽  
2018 ◽  
Vol 11 (10) ◽  
pp. 2634 ◽  
Author(s):  
Jingjing Luo ◽  
Yajing Gao ◽  
Wenhai Yang ◽  
Yongchun Yang ◽  
Zheng Zhao ◽  
...  
Keyword(s):  
Power Plants ◽  
Clustering Algorithm ◽  
Evaluation Criteria ◽  
Operating Mode ◽  
Optimal Operation ◽  
Virtual Power ◽  
Model Case ◽  
Electricity Trading ◽  
Grid Connection ◽  
Virtual Power Plants

Stimulated by the severe energy crisis and the increasing awareness about the need for environmental protection, the efficient use of renewable energy has become a hot topic. The virtual power plant (VPP) is an effective way of integrating distributed energy systems (DES) by effectively deploying them in power grid dispatching or electricity trading. In this paper, the operating mode of the VPP with penetration of wind power, solar power and energy storage is investigated. Firstly, the grid-connection requirements of VPP according to the current wind and solar photovoltaic (PV) grid-connection requirements, and analyzed its profitability are examined. Secondly, under several typical scenarios grouped by a self-organization map (SOM) clustering algorithm using the VPP’s output data, a profit optimization model is established as a guideline for the VPP’s optimal operation. Based on this model, case studies are performed and the results indicate that this model is both feasible and effective.

On-grid Photovoltaic Power System for Governmental Office Electrification

2021 ◽  
Vol 3 (2) ◽  
pp. 45-52
Author(s):  
Ali Nasser Hussain ◽  
Zuhair Sameen Shuker ◽  
Majid Khudair Abbas Al-Tamimi ◽  
Mimouna Abid
Keyword(s):  
Renewable Energy ◽  
Solar Energy ◽  
Power System ◽  
Power Plants ◽  
Renewable Energy Sources ◽  
Solar Panels ◽  
Battery System ◽  
Daily Average ◽  
Renewable Power ◽  
Grid Connection

Solar energy is one of the most promising renewable energy sources. The potential solar energy has a capacity to meet all energy requirements for human survival on planet earth. Some applications such as a thermoelectric generator, electric power generation with the assistance of solar panels and water applications are required to reduce the demand for electricity generated by conventional power plants. The current work evaluates the effectiveness of solar energy for supplying the police building located in Diyala, Iraq. The installed renewable power system consists of photovoltaic/ battery system set with grid connection installed on the roof of the building with a capacity of 5.52 kWp and battery unit (200 A, 48 Volt). Based on the daily average load kWh and daily average solar irradiance for the selected site (4.3 kWh/m2), the results of the energy generated by the system for two selected days showed that for a sunny day is about (11.63 kWh) and for party cloudy day is about (8.02 kWh). The average of energy fed to the grid for a sunny day was recorded more by more than 3.0 kWh and for party cloudy day by more than 4.0 kWh.  The system installed at the first day of February of the year 2021. The obtained results encourage to install of photovoltaic systems in the selected site which can feed such facilities with renewable energy and deliver energy to the grid.

scholarly journals Grid Code Requirements for Wind Power Integration in Europe

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Constantinos Sourkounis ◽  
Pavlos Tourou
Keyword(s):  
Wind Power ◽  
Power Plants ◽  
Low Voltage ◽  
Wind Power Integration ◽  
Wind Generators ◽  
Induction Generators ◽  
Grid Connection ◽  
Wind Power Plants ◽  
Grid Codes ◽  
Doubly Fed

As the capacity of wind power continues to increase globally, stricter requirements regarding grid connection of wind generators are introduced by system operators. The development of wind turbine technology is inevitably affected by the new grid codes, and wind power plants are expected to support the grid and provide ancillary services much like conventional power plants. The most demanding regulations are found in Europe where wind penetration levels are higher. This paper presents the main aspects of current grid code requirements for the integration of wind power in European countries and suggests performance characteristics in order to satisfy the most demanding requirements. The dynamic behavior of wind turbines with doubly fed induction generators is investigated and a solution for low voltage ride through compliance is presented.

scholarly journals Equivalent Modeling of DFIG-Based Wind Power Plant Considering Crowbar Protection

2016 ◽  
Vol 2016 ◽  
pp. 1-16 ◽  
Author(s):  
Qianlong Zhu ◽  
Ming Ding ◽  
Pingping Han
Keyword(s):  
Wind Power ◽  
Power Plants ◽  
Short Circuit ◽  
Grid Connection ◽  
Wind Power Plants ◽  
Voltage Dip ◽  
Terminal Voltage ◽  
Current Characteristics ◽  
Doubly Fed ◽  
Crowbar Protection

Crowbar conduction has an impact on the transient characteristics of a doubly fed induction generator (DFIG) in the short-circuit fault condition. But crowbar protection is seldom considered in the aggregation method for equivalent modeling of DFIG-based wind power plants (WPPs). In this paper, the relationship between the growth of postfault rotor current and the amplitude of the terminal voltage dip is studied by analyzing the rotor current characteristics of a DFIG during the fault process. Then, a terminal voltage dip criterion which can identify crowbar conduction is proposed. Considering the different grid connection structures for single DFIG and WPP, the criterion is revised and the crowbar conduction is judged depending on the revised criterion. Furthermore, an aggregation model of the WPP is established based on the division principle of crowbar conduction. Finally, the proposed equivalent WPP is simulated on a DIgSILENT PowerFactory platform and the results are compared with those of the traditional equivalent WPPs and the detailed WPP. The simulation results show the effectiveness of the method for equivalent modeling of DFIG-based WPP when crowbar protection is also taken into account.

scholarly journals LMI-Based State Feedback Control Structure for Resolving Grid Connectivity Issues in DFIG-Based WT Systems

Eng ◽  
2021 ◽  
Vol 2 (4) ◽  
pp. 562-591
Author(s):  
Muhammad Arif Sharafat Ali
Keyword(s):  
Feedback Control ◽  
Power Plants ◽  
State Feedback ◽  
Control Structure ◽  
Rapid Onset ◽  
State Feedback Control ◽  
Linear Matrix ◽  
Grid Voltage ◽  
Grid Connection ◽  
Doubly Fed

Pertaining to the connectivity issues in wind power plants with grids, this study introduces an efficient mechanism based on a state feedback control structure to establish a fast and stable grid connection for a wind-driven doubly-fed induction generator (DFIG). Owing to a direct link through stator windings, a DFIG is significantly vulnerable to grid disturbances and experiences sizable inrush currents when connected to the power grid. The proposed control structure is designed based on a linear matrix inequality stabilization criterion, which is framed using a suitable Lyapunov candidate function. The control objective is to ensure that the stator voltage can exponentially converge to the grid voltage, accounting for balanced and unbalanced grid conditions. This is achieved by generating appropriate rotor voltage references for rotor-side converter control. This study also explores the capability of the proposed control structure to enhance the system’s robustness to external disturbances and uncertain parametric variations. Simulations confirmed the effectiveness and suitability of the developed structure in mitigating the adverse effects of the rapid onset of the grid voltage at the stator terminals of the DFIG under various grid conditions; the proposed structure could thus establish a reliable connection with negligible effects on the DFIG and the grid.

Sign in / Sign up

Export Citation Format

Share Document