scholarly journals Distributed primary frequency regulation of grid-connected photovoltaic power station with battery storage

2019 ◽  
Vol 227 ◽  
pp. 032001 ◽  
Author(s):  
Jian Zhang ◽  
Ying Li ◽  
Hui Wang ◽  
Wenfeng Li
Keyword(s):  
Frequency Regulation ◽  
Battery Storage ◽  
Power Station ◽  
Photovoltaic Power ◽  
Primary Frequency

scholarly journals Frequency Modulation Method and System of Photovoltaic Virtual Synchronous Generator Based on Computer Technology

2021 ◽  
Vol 2143 (1) ◽  
pp. 012028
Author(s):  
Jiangfeng Zhang ◽  
Ye Su ◽  
Keke Zheng ◽  
Liyun Hua
Keyword(s):  
Power Generation ◽  
Power Grid ◽  
Synchronous Generator ◽  
Clean Energy ◽  
Voltage Regulation ◽  
Frequency Regulation ◽  
Important Research ◽  
Photovoltaic Power ◽  
Primary Frequency ◽  
Virtual Synchronous Generator

Abstract With people’s attention to environmental protection, clean energy has become an important research and development direction. Among them, photovoltaic power generation has many advantages, such as simple process, no fuel consumption, no noise, no pollution and so on. The power grid capacity is becoming larger and larger, and has a great impact on the environment. Therefore, the grid connection of photovoltaic power generation will cause major problems for the planning, operation and dispatching of power grid. Virtual synchronous generator (hereinafter referred to as VSG) technology can simulate the inertia, primary frequency regulation and voltage regulation characteristics of synchronous generator, which has become an important way to improve the dynamic frequency response ability of the system. Therefore, VSG technology has become an important research technology of photovoltaic grid connected system, among which FM method will also become an important research direction. Firstly, this paper analyzes the VSG algorithm and its basic characteristics. Finally, this paper analyzes the control scheme of overall primary frequency regulation of photovoltaic power station (hereinafter referred to as PPS).

Study of the Operational Characteristics of Isolated Grid Fed with Hydro Generators, Diesel Generators and Photovoltaic Power Station

2011 ◽  
Vol 354-355 ◽  
pp. 959-963
Author(s):  
Xiao Qing Qi ◽  
Wei Cao ◽  
Da Fei Wang ◽  
Da Hong Wang ◽  
Yu Li ◽  
...  
Keyword(s):  
Operating Characteristic ◽  
Power Supplies ◽  
System Stability ◽  
Frequency Regulation ◽  
Power Station ◽  
Response Characteristics ◽  
Operational Characteristics ◽  
Diesel Generators ◽  
Primary Frequency ◽  
Power Response

When the isolated grid is influenced by disturbance，the power response characteristics of power supplies have an important impact on the operating characteristic of the isolated grid. Ali grid with non-energy storage PV power station was studied and simulated with PSASP software in this paper. The result shows that it is important to make sure the diesel generators participate in primary frequency regulation of the grid to enhance the system stability, especially in the case of PV power output disturbances.

scholarly journals Primary frequency regulation supported by battery storage systems in power system dominated by renewable energy sources

2019 ◽  
Vol 2019 (18) ◽  
pp. 4986-4990
Author(s):  
Ana Turk ◽  
Monika Sandelic ◽  
Giancarlo Noto ◽  
Jayakrishnan R. Pillai ◽  
Sanjay K. Chaudhary
Keyword(s):  
Renewable Energy ◽  
Power System ◽  
Storage Systems ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Frequency Regulation ◽  
Battery Storage ◽  
Primary Frequency

scholarly journals Characteristic Analysis and Optimal Regulation of Primary Frequency Regulation Condition in Low Water Head Area Based on Hydraulic-Mechanical-Electrical Coupling Model of Pumped Storage Unit

Complexity ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-17 ◽  
Author(s):  
Cong Lv ◽  
Yanhe Xu ◽  
Xin Wu ◽  
Qing Zhang
Keyword(s):  
Power Grid ◽  
Electrical Coupling ◽  
Frequency Regulation ◽  
Regulation System ◽  
Optimization Strategy ◽  
Power Station ◽  
Storage Unit ◽  
Pump Turbine ◽  
Pumped Storage ◽  
Primary Frequency

Pumped storage power station is an important regulating tool for peak load regulation and frequency regulation of the power grid, especially its primary frequency regulation function, which is of profound significance for the safety and stability of the power grid. As the core equipment of the pumped storage power station, the reversible design of the pump turbine makes it easy to have hydraulic fluctuation and mechanical instability when the unit runs to the “S” characteristic area, which will cause the frequency oscillation of the generator under the condition of primary frequency regulation. Therefore, some innovative work is studied in this paper: (1) an accurate hydraulic-mechanical-electrical coupling system mathematical model of pumped storage unit regulation system (PSURS) is established based on full characteristic curve of the pump turbine and seventh-order synchronous generator and excitation system; (2) the dynamic response characteristics of primary frequency regulation of pumped storage unit (PSU) under different water heads and different frequency disturbances are analyzed by numerical simulation; (3) in view of the unstable condition of the unit under the large frequency disturbance when it operates in the low head and small load area, the objective optimization function considering the ITAE index of hydraulic, mechanical, and electrical factors is proposed; and (4) fractional-order PID controller and the bacterial-foraging chemotaxis gravitational search algorithm (BCGSA) combined optimization strategy is used for PSURS optimization regulation and parameter optimization. The results show that the joint optimization strategy proposed in this paper has smaller objective function value, and makes the PSURS pass through the unbalanced area quickly, with better primary frequency regulation speed and smaller regulation depth.

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