Loading...
IEC61850 standard-based transformer tap changer control for power system stability
Author(s)
Ntambwe, Chadrack Lubamba
Date Issued
2022
Type
Thesis
Publisher
Cape Peninsula University of Technology
Abstract
Electrical transformers are one of the power system equipment widely used throughout
the system. Generally, they alter voltage from one level to another as a function of turn
ratio. In some cases, one of the windings is equipped with multiple taps for flexible output
voltage. The tap changing mechanism is either an on-load or an off-load type. The onload
type is manually operated or automatically utilizing a designated device. Automated
control of a group of transformers operating in parallel is more involved and requires more
considerations to ensure power system integrity.
The research of this thesis presents the design and implementation of entirely
decentralized and hierarchal transformer on-load tap changer controllers for a system of
parallel transformers. The controllers are designed based on IEC61850 standards for
communication. The design and implementation will be in the laboratory environment.
IEC61850 standards present an endless number of features. However, the Generic
object-oriented substation event (GOOSE) messaging service is mainly the feature of
interest in this research. Schweitzer Engineering Laboratories (SEL) products are the
preferred choice of intelligent electronic devices.
The controllers are designed and
implanted in these IEDs using the manufacturers programming tool.
To achieve the aim of the research, a review of approaches for the design and execution
of transformer tap changer controllers is conducted at first. Highlights of the applications
of IEC 61850 standard for the implementation of the transformer tap changer controllers
follows. An adjusted IEEE 12 Bus power system, allowing parallel operation of
transformers, is then modelled in RTDS/RSCAD. The controllers are developed,
implemented and hardware-in-the-loop (HIL) simulated under various conditions and
disturbances. The simulation is carried out at the Centre for Substation Automation and
Energy Management Systems (CSAEMS) at the Cape Peninsula University of
Technology, Bellville campus.
the system. Generally, they alter voltage from one level to another as a function of turn
ratio. In some cases, one of the windings is equipped with multiple taps for flexible output
voltage. The tap changing mechanism is either an on-load or an off-load type. The onload
type is manually operated or automatically utilizing a designated device. Automated
control of a group of transformers operating in parallel is more involved and requires more
considerations to ensure power system integrity.
The research of this thesis presents the design and implementation of entirely
decentralized and hierarchal transformer on-load tap changer controllers for a system of
parallel transformers. The controllers are designed based on IEC61850 standards for
communication. The design and implementation will be in the laboratory environment.
IEC61850 standards present an endless number of features. However, the Generic
object-oriented substation event (GOOSE) messaging service is mainly the feature of
interest in this research. Schweitzer Engineering Laboratories (SEL) products are the
preferred choice of intelligent electronic devices.
The controllers are designed and
implanted in these IEDs using the manufacturers programming tool.
To achieve the aim of the research, a review of approaches for the design and execution
of transformer tap changer controllers is conducted at first. Highlights of the applications
of IEC 61850 standard for the implementation of the transformer tap changer controllers
follows. An adjusted IEEE 12 Bus power system, allowing parallel operation of
transformers, is then modelled in RTDS/RSCAD. The controllers are developed,
implemented and hardware-in-the-loop (HIL) simulated under various conditions and
disturbances. The simulation is carried out at the Centre for Substation Automation and
Energy Management Systems (CSAEMS) at the Cape Peninsula University of
Technology, Bellville campus.
Additional information
Thesis (MEng (Electrical Engineering, Smart grid))--Cape Peninsula University of Technology, 2022
File(s)![Thumbnail Image]()
Loading...
Name
Lubamba_Chadrack_214348067.pdf
Size
11.14 MB
Format
Adobe PDF
Checksum
(MD5):d2d2f6dd6b849adda7715977f218f066