Study of a super capacitor solution as a replacement of an energy storing motor of 1500kW at OKG3 nuclear reactor
(2024) EIEM01 20231Industrial Electrical Engineering and Automation
- Abstract (Swedish)
- The reliable operation of nuclear reactors is contingent upon precise control mechanisms for critical components, such as the head circulation pumps. This master thesis investigates an innovative approach to address the ramp-down speed of these pumps during external electrical grid failures by exploring the application of a supercapacitor group. Presently, the existing solution relies on a fly-wheel motor to provide additional energy during speed reduction, but persistent maintenance issues, particularly related to sliding-bearing problems, have resulted in substantial costs.
This study employs a comprehensive research methodology that is based on a study of the energy and power needed, a preliminary sizing of the main components, and a... (More) - The reliable operation of nuclear reactors is contingent upon precise control mechanisms for critical components, such as the head circulation pumps. This master thesis investigates an innovative approach to address the ramp-down speed of these pumps during external electrical grid failures by exploring the application of a supercapacitor group. Presently, the existing solution relies on a fly-wheel motor to provide additional energy during speed reduction, but persistent maintenance issues, particularly related to sliding-bearing problems, have resulted in substantial costs.
This study employs a comprehensive research methodology that is based on a study of the energy and power needed, a preliminary sizing of the main components, and a simulation of the new system. The objective is to enhance reliability and reduce the maintenance costs associated with the head circulation pump speed control during periods of external electrical grid failures. This study serves as a base to analyze the feasibility of the project and possible weak points of taking this approach.
The findings of this research show that using a supercapacitor technology is a feasible solution that can fulfill all the security and performance standards expected in an application of this caliber and that from the operational maintenance point of view would imply considerable improvements due to its low maintenance work. The ability to seamlessly ramp down pump speed during external electrical grid failures is ensured and there are no noticeable security threats that could endanger the safety of the system.
This research not only presents a viable solution for the specific case of head circulation pump speed control during grid failures but also sets clear guidelines for important areas to consider when approaching the project. The outcomes give a green light to the realization of the project, which would be followed by a detailed technical analysis of every area of the project and the sizing of other
little components. (Less)
Please use this url to cite or link to this publication:
http://lup.lub.lu.se/student-papers/record/9150430
- author
- Arenas Kelbelova, Iván LU
- supervisor
- organization
- alternative title
- Superkondensator som ersättning för 1500 kW motor med svänghjul i OKG3 kärnkraftverk
- course
- EIEM01 20231
- year
- 2024
- type
- H3 - Professional qualifications (4 Years - )
- subject
- keywords
- Super capacitor, flywheel
- report number
- CODEN:LUTEDX/(TEIE-5508)/1-70/(2024)
- language
- English
- id
- 9150430
- date added to LUP
- 2024-04-09 14:10:27
- date last changed
- 2024-04-09 14:10:27
@misc{9150430,
abstract = {{The reliable operation of nuclear reactors is contingent upon precise control mechanisms for critical components, such as the head circulation pumps. This master thesis investigates an innovative approach to address the ramp-down speed of these pumps during external electrical grid failures by exploring the application of a supercapacitor group. Presently, the existing solution relies on a fly-wheel motor to provide additional energy during speed reduction, but persistent maintenance issues, particularly related to sliding-bearing problems, have resulted in substantial costs.
This study employs a comprehensive research methodology that is based on a study of the energy and power needed, a preliminary sizing of the main components, and a simulation of the new system. The objective is to enhance reliability and reduce the maintenance costs associated with the head circulation pump speed control during periods of external electrical grid failures. This study serves as a base to analyze the feasibility of the project and possible weak points of taking this approach.
The findings of this research show that using a supercapacitor technology is a feasible solution that can fulfill all the security and performance standards expected in an application of this caliber and that from the operational maintenance point of view would imply considerable improvements due to its low maintenance work. The ability to seamlessly ramp down pump speed during external electrical grid failures is ensured and there are no noticeable security threats that could endanger the safety of the system.
This research not only presents a viable solution for the specific case of head circulation pump speed control during grid failures but also sets clear guidelines for important areas to consider when approaching the project. The outcomes give a green light to the realization of the project, which would be followed by a detailed technical analysis of every area of the project and the sizing of other
little components.}},
author = {{Arenas Kelbelova, Iván}},
language = {{eng}},
note = {{Student Paper}},
title = {{Study of a super capacitor solution as a replacement of an energy storing motor of 1500kW at OKG3 nuclear reactor}},
year = {{2024}},
}