Miscellaneous Numerical 5 - Introduction to HVDC Transmission - HVDC Transmission

TL;DR

Converting a 3-phase AC system to bipolar DC, calculating DC voltage, line losses, and power factors involved.

Transcript

hello everyone welcome to ekeeda platform and this is davin jenkins here your electrical faculty and in this video i'm going to talk about the numerical number five which is miscellaneous so let's talk about one by one what are the different datas are given for this numerical so we will start with the reading of this numerical it is saying that the... Read More

Key Insights

• 🔙 Conversion process from 3-phase AC to bipolar DC explained.
• 🫥 Formulas for calculating DC voltage, phase current, DC power, and line losses provided.
• ✊ Importance of considering resistance, power factor, and voltage values in numerical analysis.

Questions & Answers

Q: What values are provided for the numerical analysis of converting 3-phase AC to bipolar DC?

The given values are 430kV for voltage and 150MW for power in the 3-phase AC system being converted to bipolar DC.

Q: How is the DC voltage calculated in the conversion process?

The DC voltage (vd) is determined by multiplying the given 430kV by root 2/3 to obtain the peak value, which eventually results in 351kV.

Q: How is the AC current per phase calculated for the given scenario?

The AC current is calculated using the formula involving power, voltage, and power factor to arrive at 0.232kA or 232A.

Q: How are the DC line losses calculated in the conversion process?

The DC line losses are computed using the formula 2Id^2R, where Id is the current and R is the resistance, resulting in 4.5kW of losses.

Summary & Key Takeaways

• Explains converting 3-phase AC to bipolar DC with given values of 430kV and 150MW.

• Calculates DC voltage, phase current, DC power, and DC line losses using formulas.

• Shows step-by-step solution for estimating DC voltage and line losses in the conversion process.