Transient-state analysis of a large distribution feeder with high-capacity photovoltaic systems able to control reactive power

2017 ◽  
Author(s):  
Insu Kim ◽  
Ronald G. Harley
Keyword(s):  
Reactive Power ◽  
High Capacity ◽  
Transient State ◽  
Photovoltaic Systems ◽  
Distribution Feeder ◽  
Large Distribution ◽  
State Analysis

Transient-state analysis of MV instrument transformers

2019 ◽  
Vol 168 ◽  
pp. 162-168
Author(s):  
R. Lamedica ◽  
M. Pompili ◽  
S. Sangiovanni ◽  
L. Calcara ◽  
A. Ruvio ◽  
...  
Keyword(s):  
Transient State ◽  
Instrument Transformers ◽  
State Analysis

Researches on Reactive Compensation for Long-Distance and Highcapacity Hybrid Submarine Cable Lines

2012 ◽  
Vol 433-440 ◽  
pp. 2406-2410
Author(s):  
Dong Mei Sun ◽  
Jun Wen
Keyword(s):  
High Voltage ◽  
Transmission Lines ◽  
Reactive Power ◽  
High Capacity ◽  
Reactive Power Compensation ◽  
Submarine Cable ◽  
Long Distance ◽  
Power Frequency ◽  
Electro Magnetic ◽  
Cable Lines

In order to balance reactive power, reduce line losses, prevent excessive power frequency and switching over-voltage and adjust and control the line voltage etc. The long-distance and high voltage transmission lines are needed reactive power compensation. High voltage overhead transmission lines and high voltage submarine cable (including mixed-submarine) transmission lines are different, for example, the capacitance in the submarine cable lines is larger than in the conventional overhead lines. Therefore, the reactive power compensation on the EHV transmission lines which contains submarine cable lines is focus on the compensation of submarine cable lines. The reactive power compensation in 500 kV AC submarine cable interconnection project for Hainan power grid and Guangdong power grid[1], which is the first 500 kV long-distance and high-capacity sea trails interconnection project in China and which is just completed soon, is researched by Electro-Magnetic Transient Program——PSCAD/EMTDC (Power System Computer Aided Design/ Electro Magnetic Transient in DC System in this paper). The simulation results verifies that the role of shunt reactor which could absorb charging power and suppress the power frequency overvoltage for the long-distance and high-capacity hybrid submarine cable lines. The conclusions can offer references to suppress power frequency overvoltage and the reactive power compensation in extra high voltage transmission lines which is the mixed mode of overhead transmission lines and submarine cables.

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