Strategy for Grid-Connection Control of Photovoltaic System

2014 ◽  
Vol 1070-1072 ◽  
pp. 35-38
Author(s):  
Ju Bo Wang ◽  
Xiu Yang ◽  
Wei Bao ◽  
Wen Li Xu
Keyword(s):  
Reactive Power ◽  
Decoupling Control ◽  
Photovoltaic System ◽  
Photovoltaic Systems ◽  
Pv Inverter ◽  
Grid Connection ◽  
Active And Reactive Power ◽  
Power Decoupling ◽  
Simulation And Experiment

With more and more photovoltaic systems connected to the grid, a strategy for grid-connection control is proposed. The topology of PV inverter and photovoltaic inverter and the active and reactive power decoupling control of photovoltaic system are analyzed. The feasibility and effectiveness of the strategy for grid-connection control is verified by simulation and experiment by the case on the RTDS.

scholarly journals OPTIMAL LOCATION OF A PHOTOVOLTAIC SYSTEM TO IMPROVE THE VOLTAGE PROFILE CONSIDERING THE ACTIVE AND REACTIVE POWER LIMITATIONS

2019 ◽  
Vol 16 (32) ◽  
pp. 108-129
Author(s):  
H MALEKI HASAN ABADI ◽  
H DASHTI
Keyword(s):  
Electricity Market ◽  
Reactive Power ◽  
Active Power ◽  
Photovoltaic System ◽  
Photovoltaic Systems ◽  
Voltage Profile ◽  
Positive Effects ◽  
Pv Inverter ◽  
Active And Reactive Power ◽  
Micro Grids

This paper has investigated the optimal localization of photovoltaic systems as one of the distributed generations in micro-grids, with regard to active and reactive power. Micro-grids provide the power quality in accordance with customers' needs, positive effects of micro-grids on the electricity market and economic savings. On the other hand, their effects on reducing air pollution have caused many researchers and experts to notice the issue of micro-grids. So, considering the ability of active and reactive power generation for photovoltaic systems in 24 hours, they can be used more efficiently. The algorithms presented on 33 bus micro-grid are applied in MATLAB, and the results have been investigated. The results have shown that the generated reactive power would significantly reduce the active power of system losses. At 9 AM, considering the PV inverter capability for generating the active and reactive power, voltage profile of the system has improved more effectively. At 12 PM, there are existed the maximum radiation and active power generated, and the whole capacity of the inverter is used to generate the active power. The PV reactive power generated has led to the improvement of the voltage profile.

scholarly journals MEASUREMENT AND ADSORPTION OF HEAVY METALS ION FROM WATER USING POROUS NANO-ADSORBENTS BY ATOMIC ABSORPTION METHOD

2019 ◽  
Vol 16 (32) ◽  
pp. 228-238
Author(s):  
B. ORDOUEE ◽  
H. HASHEMINEZHAD
Keyword(s):  
Electricity Market ◽  
Reactive Power ◽  
Active Power ◽  
Photovoltaic Systems ◽  
Voltage Profile ◽  
Distributed Generations ◽  
Positive Effects ◽  
Pv Inverter ◽  
Active And Reactive Power ◽  
Micro Grids

This paper has investigated the optimal localization of photovoltaic systems as one of the distributed generations in micro-grids, with regard to active and reactive power. Micro-grids provide the power quality in accordance with customers' needs, positive effects of micro-grids on the electricity market and economic savings. On the other hand, their effects on reducing air pollution have caused many researchers and experts to notice the issue of micro-grids. So, considering the ability of active and reactive power generation for photovoltaic systems in 24 hours, they can be used more efficiently. The algorithms presented on 33 bus micro-grid are applied in MATLAB, and the results have been investigated. The results have shown that the generated reactive power would significantly reduce the active power of system losses. At 9 AM, considering the PV inverter capability for generating the active and reactive power, voltage profile of the system has improved more effectively. At 12 PM, there are existed the maximum radiation and active power generated, and the whole capacity of the inverter is used to generate the active power. The PV reactive power generated has led to the improvement of the voltage profile.

Strategy for Reactive Control in Symmetrical Low Voltage Ride through of Photovoltaic System

2014 ◽  
Vol 602-605 ◽  
pp. 2820-2823
Author(s):  
Ju Bo Wang ◽  
Wen Li Xu ◽  
Wei Bao ◽  
Pan Zhang
Keyword(s):  
Control Strategy ◽  
Reactive Power ◽  
Low Voltage ◽  
Photovoltaic System ◽  
Reactive Control ◽  
Low Voltage Ride Through ◽  
Power Decoupling ◽  
Simulation And Experiment ◽  
System Output ◽  
New Type

The active and reactive power decoupling control of photovoltaic system is analyzed in this paper. The DC-DC and DC-AC two level photovoltaic inverter model are built on the RTDS. A new type LVRT control strategy about photovoltaic system is proposed. In the symmetrical grid drop fault case, photovoltaic system output reactive power to support the grid voltage recovering and save reactive power equipment. The feasibility and effectiveness of the control strategy is verified by simulation and experiment on the RTDS.

Research of Brushless Doubly-Fed Generator for Grid-Connection and Power Control

2014 ◽  
Vol 678 ◽  
pp. 417-422
Author(s):  
Yu Liu ◽  
Zhong Chao Wei ◽  
Xin Mai Gao ◽  
Xi Chen ◽  
Xue Fan Wang ◽  
...  
Keyword(s):  
Reactive Power ◽  
Control Method ◽  
Electrical Machine ◽  
Voltage Control Strategy ◽  
Grid Connection ◽  
Active And Reactive Power ◽  
Machine Theory ◽  
Doubly Fed ◽  
Doubly Fed Generator ◽  
Doubly Fed Machine

To reliably realize the grid-connection generating of brushless doubly-fed machine (BDFM), this paper firstly focuses on some essential issues, such as amplitude, frequency and phase of power winding voltage; the control of active and reactive power. Deducing the control method of power winding voltage amplitude, frequency and phase based on basic electrical machine principle. Referring synchronous machine theory, the modulation principle of active and reactive power for BDFM is obtained. Then, the connection progress to grid is researched by setting up the control platform based on DSP. The experimental results show that the amplitude, frequency and phase of power winding voltage are effectively controlled and the active and reactive power could be regulated when adopting the decoupled voltage control strategy. This control method provides a practical realization manner in the application of wind power generation and so on.

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