Converter Transformer - Introduction to HVDC Transmission - High Voltage Direct Current Transmission

TL;DR

Converting transformers for high voltage DC transmission systems have different configurations and advancements compared to conventional transformers.

Transcript

hello everyone welcome to ekeeda platform and this is raven jaguar here your electrical faculty in this video i'm going to dictate about the converting transformer this converting transformer is actually different from your conventional transformer that we have already studied in our second and third semesters okay so this converting transformer th... Read More

Key Insights

• 🔂 Converting transformers come in different configurations, including three-phase and two-winding, single-phase two-winding, and single-phase three-winding.
• 🤩 The windings of converting transformers are connected in a star and delta combination on the wall side and parallel with neutral grounding on the AC side.
• ✋ Unlike conventional transformers, converting transformers have higher leakage reactance to limit short circuit current and protect the walls.
• 🌸 Designing converting transformers involves considering stress resistance, eddy current loss, hysteresis loss, and reducing spare capacity.
• 👻 Back-to-back connections of converting transformers allow reliable operations and reduced spare capacity.
• ⚡ Tap changes are employed in converting transformers to efficiently transform voltage values and can be of different types depending on the required conversion.
• ⚡ Converting transformers play a crucial role in converting AC signals to DC in high voltage transmission systems.

Questions & Answers

Q: What are the different configurations of converting transformers?

Converting transformers can be configured as three-phase and two-winding, single-phase two-winding, and single-phase three-winding transformers.

Q: How are the windings connected in a converting transformer?

The windings of a converting transformer are connected in a star and delta combination on the wall side and parallel with neutral grounding on the AC side.

Q: What is the main difference between converting transformers and conventional transformers?

The main difference is the leakage reactance, which is higher in converting transformers to limit short circuit current and protect the walls.

Q: What factors are considered in the design of converting transformers?

Designing converting transformers involves considering stress resistance, eddy current loss, hysteresis loss, and reducing spare capacity.

Summary & Key Takeaways

• Converting transformers are used in high voltage DC transmission systems and have different configurations, such as three-phase and two-winding, single-phase two-winding, and single-phase three-winding.

• The windings of converting transformers are connected in a star and delta combination on the wall side, while on the AC side, they are connected in parallel with neutral grounding.

• The main difference between converting transformers and conventional transformers is the leakage reactance, which is higher in converting transformers to limit short circuit current and protect the walls.

• Designing converting transformers involves considering stress resistance, eddy current loss, hysteresis loss, and reducing spare capacity.