What is Load flow?
Load flow, also known as Power Flow Analysis, is an essential method to examine the problems occurring in the power systems network or grid.
Load flow Analysis is performed to determine the state of the equipment present in the network in order to ensure their operation within the specified limits. This study solves the steady operation state with node voltages and branch power flow in the power system.
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Analysis of Power flow Study:
There are four quantities in a system node that are classified as the Voltage Magnitude, Phase Angle, Real and Reactive Power. While defining the system nodes, we consider three types of buses.
The buses and quantities are correlated with each other. The buses are named as Load bus, Generator bus and Slack bus.
The buses with no generators are load bus (P-Q bus). Here, V and θ are unknown whereas the real and reactive power are known.
In Generator bus (P-V bus), Q and θ are unknown. At this bus the magnitude of the voltage is kept constant and the real power is provided by the prime mover of the generator.
Slack bus is also known as reference bus. The voltage is fixed in both magnitude and phase where P and Q are unknown.
How to calculate Load flow?
To calculate load flow, there are 3 techniques out of which two are the most common.
- Gauss Seidel Method
- Newton Raphson Method
- Fast Decoupled Method
Load Flow by Allumiax
AllumiaX, LLC is a Seattle based Power Systems Engineering and Consulting company with a group of talented and hardworking engineers, always ready to serve their clients. .
We perform load flow studies for industrial and commercial facilities as per our client’s requirements.
Our professional engineers have the expertise to examine and analyze the Electrical Power Systems using advance modelling tools and software.
We perform the load flow studies by acquiring the data from the client. The TCC curves are built along with the load flow, short circuit, equipment evaluation and arc flash studies where the model is examined to ensure our requirements are being met.
We provide protective device recommendations for the overloaded conditions. Lastly, all the recommendations, model, TCC curves and short circuit reports are assembled in a detailed report.
Let us know if you have any queries regarding this topic and do provide us with your feedback in the comments.
AllumiaX, LLC is one of the leading providers of Power System Studies in the northwest. Our matchless services and expertise focus on providing adequate analysis on Arc Flash, Transient Stability, Load Flow, Snubber Circuit, Short Circuit, Coordination, Ground Grid, and Power Quality.
About The Author
Abdur Rehman is a professional electrical engineer with more than eight years of experience working with equipment from 208V to 115kV in both the Utility and Industrial & Commercial space. He has a particular focus on Power Systems Protection & Engineering Studies.
Abdur Rehman is the CEO and co-founder of allumiax.com and creator of GeneralPAC by AllumiaX. He has been actively involved in various roles in the IEEE Seattle Section, IEEE PES Seattle, IEEE Region 6, and IEEE MGA.
Originally published at https://allumiax.com on January 6, 2020.