PROJECT CASE
Guangda Electric Is A Professional Organization Dedicated To Solving Power Quality Problems Of Users
What should be done if the power factor is low after the photovoltaic grid connection, resulting in penalties for reactive power? What are the solutions?
Time：
2024-04-22
Project Introduction:
A dry transformer with a rated capacity of 630kVA is installed on-site at a crane manufacturing equipment factory; the voltage is 10kV/0.4kV. Two additional 2500kVA transformers are added for photovoltaic boosting and grid connection, connected to the grid on the 10kV side, boosting the voltage to 10kV/0.8kV.After the photovoltaic grid connection, the high-voltage metering of the power supply bureau.Low power factor,Causing penalties for reactive power adjustment fees..
On-site Technical Challenges:
① The on-site load changes rapidly, requiring fast dynamic reactive power compensation.
② The active power demand changes rapidly and is unstable during the startup and shutdown periods of photovoltaic power generation.
③ When the equipment is lightly loaded, the light load reactive power loss of the three transformers cannot be detected and compensated on the low-voltage side.
④ There is a static reactive power compensation device on the low-voltage side that needs to be utilized.
Installation Solution:
After multiple discussions and professional technical analysis by our company, we modified the control program based on the characteristics of the site using our photovoltaic-specific and dynamically fast compensation device.Sampling on the high-voltage side and compensating on the low-voltage side.,This solves the low power factor problem caused by photovoltaic and rapidly changing loads on-site..
On-site Images:
Summary of Test Data Effects:
After the project is delivered and put into operation,once the compensation device is put into operation,the power factor has increased to above 0.9, meeting the grid assessment standard of above 0.90, improving the power factor, reducing electricity penalty fees, effectively reducing operating current, enhancing grid transmission capacity, and lowering line and transformer losses.This provides a reliable and safe power supply system for the site.
Test Data Comparison:
Guangdong Guangda Electric Co., Ltd. is committed to providing customers with first-class power quality solutions, and we welcome customers to discuss cooperation.
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