Sub synchronous oscillations in power systems

With the soaring connection of power electronics converter’s generation and loads in power systems, the fundamental characteristics and dynamic behaviour of the systems are changing. The well-known natural frequencies of the system can get excited by sophisticated and now fast-acting control systems and sustain a sub nominal oscillation. 

The tech talk is aimed to introduce the sub-synchronous oscillations phenomena and talk through different types, cause and effects, simulations, diagnostics, and mitigation methods. Related stability of inverter connected generation facilities will be discussed and examples will be presented of the past sub-synchronous oscillations events in South West Inter-Connected System (SWIS) and other networks.

Learning outcomes

In this presentation you will learn: 

1. The phenomime of resonance in power systems and Sub synchronous resonance.
2. Sub synchronous torsional interaction.
3. Sub synchronous control interaction.
4. Symptoms, consequences and mitigation techniques.

Event program

In-person:

• 4.00 pm AWST – Registrations open and networking
• 4.30 pm AWST - Presentation commences 
• 5.30 pm AWST   - Q&A
• 6.00 pm AWST  - Event concludes

Webinar:

• 6.30 pm AEST - Presentation commences
• 7.30 pm AEST   - Q&A
• 8.00 pm AEST  - Event concludes

About the speaker

Dr Reza Bank Tavakoli MIEAust CPEng

Founder and Director, PowerGie Engineering

Biography

Reza Bank Tavakoli SMIEEE MIEAust CPEng is recognised as a power system security analysis specialist and a system dynamic and electro-magnetic transient (EMT) expert. After his PhD graduation, he has worked for years in power systems planning, engineering and design and power system operations working in Iran, Germany, Ireland and Australia. 

Reza has a fellowship on inverter connected renewable generation operation in power systems with high renewable penetration levels from UCD, Ireland. He has worked in various industry sectors from research and development and manufacturing to utilities and industries. Reza has extensive experience in South-West Interconnected System (SWIS) planning, design, operations and security analysis. 

Reza has in depth understanding of WEM regulatory requirements, network access assessments, design standards, generator performance standards, testing and commissioning requirements, test plans and impact assessment on power systems. Reza is a chartered member of engineers Australia and a senior member of IEEE. He is also the recognised author and reviewer of IEEE Transactions on Power Systems and Transactions on Power Delivery.