The Importance of Transient Voltage Control

Oct 13, 2025 by wbrum.org 39 views

The Effect of Shunt Reactor Installation on Transient Voltage Due to Load Release at the 275 kV Substation Pangkalan Susu-Binjai

Introduction

The transmission of electrical power over long distances is a complex process that requires careful consideration of various factors to ensure the stability and reliability of the system. One of the critical issues that must be addressed in high-voltage transmission systems is the phenomenon of transient voltage, which can occur during load release or opening operations. This condition can cause a surge in voltage that has the potential to damage electrical system equipment. Therefore, it is essential to design a transmission system that can control voltage fluctuations and one way to do this is to use a shunt reactor.

The Importance of Transient Voltage Control

Transient voltage control is a critical aspect of high-voltage transmission systems. Uncontrolled voltage surges can cause serious damage to electrical equipment, such as transformers, circuit breakers, and other equipment. The installation of a shunt reactor as a mitigation step is a very important solution to this problem. The shunt reactor works by absorbing excessive reactive energy, which can stabilize the voltage in the transmission channel. When a load release occurs, the suddenly lost energy can cause voltage fluctuations. With the shunt reactor, this fluctuation can be controlled, so that the voltage received at the end of a fixed channel within a safe limit.

The Role of Shunt Reactors in Voltage Control

Shunt reactors are designed to function as compensators mounted on the receiving side of the transmission channel. They work by absorbing excessive reactive energy, which can stabilize the voltage in the transmission channel. When a load release occurs, the suddenly lost energy can cause voltage fluctuations. With the shunt reactor, this fluctuation can be controlled, so that the voltage received at the end of a fixed channel within a safe limit. The results of this study emphasize how important innovation is in electricity management techniques to maintain the stability and reliability of the transmission system.

Methodology

This study was conducted in the 275 kV Milk-Binjai Pangkalan Transmission utility system using ETAP 11.0 software to simulate through the Transient Stability Analysis feature. The research process involved observation of voltage on the 275 kV receiver side bus in the substation (GI) 275 kV Binjai, while the release of load is carried out at 20 kV feeders in GI 150 KV Binjai with a stages of release ranging from 10% to 100% with an increase of 10% each stage.

Results

The results of the simulation show that the installation of shunt reactors can effectively reduce the voltage to reach a reduction of ± 3.613%. This study also opened up opportunities for further development in optimizing the electricity system, especially in the high-voltage transmission channels in Indonesia.

Conclusion

In conclusion, the installation of a shunt reactor in the 275 kV substation Pangkalan Susu-Binjai not only serves to reduce more voltage, but also contributes to the safety and reliability of the transmission system as a whole. This confirms the importance of understanding and application of modern technology in the management of electrical systems in this increasingly complex era.

Recommendations

Based on the results of this study, the following recommendations are made:

The installation of shunt reactors should be considered as a mitigation step to reduce transient voltage in high-voltage transmission systems.
Further research should be conducted to optimize the design and installation of shunt reactors in high-voltage transmission systems.
The use of modern technology and simulation software should be encouraged to improve the management of electrical systems in this increasingly complex era.

Limitations

This study has several limitations, including:

The study was conducted in a specific transmission system, and the results may not be applicable to other systems.
The study only considered the effect of shunt reactor installation on transient voltage and did not consider other factors that may affect the transmission system.

Future Research Directions

Future research should focus on the following areas:

Optimizing the design and installation of shunt reactors in high-voltage transmission systems.
Developing new technologies and techniques to improve the management of electrical systems in this increasingly complex era.
Conducting further research on the effect of shunt reactor installation on other factors that may affect the transmission system.

References

[List of references cited in the study]

Appendix

[Appendix containing additional information, such as tables, figures, and raw data]

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Frequently Asked Questions (FAQs) about Shunt Reactor Installation and Transient Voltage Control

Q: What is a shunt reactor and how does it work?

A: A shunt reactor is a device that is installed in a transmission system to absorb excessive reactive energy and stabilize the voltage in the system. It works by providing a path for the reactive energy to flow out of the system, thereby reducing the voltage and preventing it from surging.

Q: What is transient voltage and why is it a problem?

A: Transient voltage is a sudden and temporary change in voltage that can occur in a transmission system when a load is released or a fault occurs. This can cause a surge in voltage that can damage electrical equipment and disrupt the operation of the system.

Q: How does a shunt reactor help to control transient voltage?

A: A shunt reactor helps to control transient voltage by absorbing excessive reactive energy and stabilizing the voltage in the system. This prevents the voltage from surging and reduces the risk of damage to electrical equipment.

Q: What are the benefits of installing a shunt reactor in a transmission system?

A: The benefits of installing a shunt reactor in a transmission system include:

Reduced risk of damage to electrical equipment
Improved stability and reliability of the system
Reduced risk of power outages and disruptions
Improved overall efficiency and performance of the system

Q: How is a shunt reactor installed in a transmission system?

A: A shunt reactor is typically installed in a transmission system by connecting it to the receiving side of the transmission line. The reactor is designed to work in conjunction with the existing transmission system and is typically installed in a location that is easily accessible for maintenance and repair.

Q: What are the costs associated with installing a shunt reactor in a transmission system?

A: The costs associated with installing a shunt reactor in a transmission system can vary depending on the size and complexity of the system. However, the costs are typically offset by the benefits of improved stability and reliability, reduced risk of damage to electrical equipment, and improved overall efficiency and performance of the system.

Q: Can a shunt reactor be used in conjunction with other voltage control devices?

A: Yes, a shunt reactor can be used in conjunction with other voltage control devices, such as capacitor banks and voltage regulators. This can provide additional benefits and improve the overall performance of the system.

Q: How is the performance of a shunt reactor monitored and maintained?

A: The performance of a shunt reactor is typically monitored and maintained through regular testing and maintenance. This includes checking the reactor's voltage and current ratings, inspecting the reactor's physical condition, and performing any necessary repairs or replacements.

Q: What are the common applications of shunt reactors in transmission systems?

A: Shunt reactors are commonly used in transmission systems to:

Control transient voltage
Improve stability and reliability
Reduce risk of damage to electrical equipment
Improve overall efficiency and performance of the system

Q: What are the common types of shunt reactors used in transmission systems?

A: The common types of shunt reactors used in transmission systems include:

Fixed shunt reactors
Adjustable shunt reactors
Hybrid shunt reactors

Q: What are the common materials used in the construction of shunt reactors?

A: The common materials used in the construction of shunt reactors include:

Copper
Aluminum
Steel
Ceramic

Q: What are the common standards and regulations that govern the design and installation of shunt reactors?

A: The common standards and regulations that govern the design and installation of shunt reactors include:

IEEE standards
IEC standards
National Electric Code (NEC)
Local and national regulations

Note: The above article is a Q&A article that provides answers to frequently asked questions about shunt reactor installation and transient voltage control. The article is designed to provide a clear and concise overview of the topic and is intended for a general audience.