Disadvantages of HVDC Transmission - Introduction to HVDC Transmission - HVDC Transmission

TL;DR

This video discusses the various disadvantages of HVDC transmission systems, including increased costing, the need for complex equipment and control, system failures, harmonic issues, complicated cooling, limited overload capacity, and unsuitability for multi-terminal networks.

Transcript

hello everyone welcome to ekeeda platform and this is ravin jang here your electrical faculty and in this video i'm going to dictate about the disadvantages or you can see the various disadvantages of hvdc transmission system i have already discussed about the advantages of hvdc transmission system now i will dictate one by one the discard advantag... Read More

Key Insights

• ❓ The costing of HVDC systems is increased due to the inclusion of terminal equipment like rectifiers and inverters.
• ❓ Development of DC circuit breakers is still ongoing, affecting their reliability.
• 🤨 The incorporation of additional equipment in HVDC systems raises costs and increases maintenance difficulty.
• 🎮 Controlling HVDC systems becomes complex under abnormal conditions.
• ❓ System failure is a potential drawback of HVDC transmission.
• ❓ Harmonic filters are required to mitigate disturbances caused by harmonics in HVDC systems.
• 😎 Cooling polytronics devices used in HVDC systems is a complicated process.
• ⛔ Overload capacity is limited in HVDC converters.

Questions & Answers

Q: How does the inclusion of converters in HVDC systems affect their costs?

The inclusion of converters, such as rectifiers and inverters, in HVDC systems increases the overall cost due to the need for AC to DC and DC to AC conversions.

Q: Are DC circuit breakers as reliable as AC circuit breakers?

DC circuit breakers are similar to AC circuit breakers in function but are still in the process of technological development, making them less reliable at present.

Q: What are some challenges related to the maintenance of additional equipment in HVDC systems?

The inclusion of additional equipment like converter transformers and mechanical auxiliaries in HVDC systems leads to increased costs and difficulties in maintaining these extra components.

Q: Why is controlling HVDC systems complicated under abnormal conditions?

Controlling HVDC systems becomes challenging under abnormal conditions, leading to complications in maintaining stable transmission lines.

Summary & Key Takeaways

• HVDC transmission systems require costly terminal equipment such as rectifiers and inverters, increasing the overall system's cost.

• The development of DC circuit breakers is still in progress, making them less reliable than AC circuit breakers.

• The inclusion of additional equipment like converter transformers and mechanical auxiliaries raises costs and makes maintenance challenging.