How to Calculate Total Current for HV Distribution Feeder Systems?

In summary, The total current from A is equal to the magnitude of the sum of the currents from B and C, which can be calculated using the formula: I_A = | I_B + I_C | where I_B = 167.9 A and I_C = 94.5 A.
  • #1
eddievic
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Homework Statement



The attachment lists the question I'm posed in full.
I have completed (i) and (ii) but am stuck on (iii)

The Attempt at a Solution



I know that load B draws 3.2*10^6/sqrt3 * 11 * 10^3 = 167.9 @37°

and load C draws 1.8*10^6/sqrt3 * 11 * 10^3 = 94.5 @53°

I need to find total current from A to continue but am unsure how to do this, I know thios must relate to B and C but cannot remember how. Any help is appreciated.

 

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  • #2
The total current from A is equal to the magnitude of the sum of the currents from B and C. That is:I_A = | I_B + I_C |where I_B = 167.9 A and I_C = 94.5 A.
 

FAQ: How to Calculate Total Current for HV Distribution Feeder Systems?

1. What is a HV distribution feeder system?

A HV distribution feeder system is a network of electrical power lines that transmit high voltage electricity from a substation to distribution transformers and then to end-use customers. It is an essential component of the power grid that delivers electricity to homes, businesses, and other facilities.

2. What is the purpose of a HV distribution feeder system?

The main purpose of a HV distribution feeder system is to efficiently distribute electricity from a power plant or substation to end-use customers. It helps to maintain a reliable and stable power supply by balancing the load and preventing overloading of the system.

3. How does a HV distribution feeder system work?

A HV distribution feeder system works by using high voltage electricity to transmit energy through a network of power lines and transformers. The system is designed to regulate the flow of electricity and maintain a consistent voltage level for safe and efficient distribution to customers.

4. What are the components of a HV distribution feeder system?

The main components of a HV distribution feeder system include power lines, transformers, circuit breakers, switches, and other protective equipment. These components work together to transmit and distribute electricity while ensuring the safety and reliability of the system.

5. How is a HV distribution feeder system different from a LV distribution system?

A HV distribution feeder system operates at higher voltage levels (typically above 33 kV) compared to a LV distribution system (usually below 33 kV). HV distribution systems are used for longer distance transmission and are generally more complex and expensive to build and maintain, while LV distribution systems are used for shorter distances and are more common in residential areas.

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