04-07-2012, 04:13 PM
APPLICATIONS OF GPS IN POWER ENGINEERING
[attachment=26725]
What is GPS?
GPS or Global Positioning Systems is a highly sophisticated navigation system developed by the United States Department of Defense. This system utilizes satellite technology with receivers and high accuracy clocks to determine the position of an object.
The Global Positioning System
A constellation of 24 high-altitude satellites
A constellation of satellites, which orbit the earth twice a day, transmitting precise time and position (Latitude, Longitude and Altitude) Information.
Why do we need GPS?
Safe Travel
Traffic Control
Resource Management
Defense Mapping
Utility Management
Property Location
Construction Layout
Phasor Measurement Units
They are devices which use synchronization signals from the global positioning system (GPS) satellites and provide the phasor voltages and currents measured at a given substation.
Applications of PMU in power System
Adaptive relaying
Instability prediction
State estimation
Improved control
Fault recording
Disturbance recording
Transmission and generation modeling verification
Wide area Protection
Fault location
Adaptive relaying
Adaptive relaying is a protection philosophy which permits and seeks to make adjustments in various protection functions in order to make them more tuned to prevailing power system conditions
CONCLUSIONS
The conclusions extracted form the present work can be summarized as follows:
A technique for estimating the fault location based on synchronized data for an interconnected network is developed and implemented using a modal transform
One-bus deployment strategy is more useful than tree search for fault location detection as it gives more system observability.
3- The average value of mode 1 and 2 of Karrenbauer transformation is used for 3-phase and line-to-line faults, while the average value of the 3 modes is used for line-to-line-ground and line-to-ground faults
4- The results obtained from applying the developed technique applied to a system depicted from the Egyptian network show acceptable accuracy in detecting the fault and locations of different faults types.
[attachment=26725]
What is GPS?
GPS or Global Positioning Systems is a highly sophisticated navigation system developed by the United States Department of Defense. This system utilizes satellite technology with receivers and high accuracy clocks to determine the position of an object.
The Global Positioning System
A constellation of 24 high-altitude satellites
A constellation of satellites, which orbit the earth twice a day, transmitting precise time and position (Latitude, Longitude and Altitude) Information.
Why do we need GPS?
Safe Travel
Traffic Control
Resource Management
Defense Mapping
Utility Management
Property Location
Construction Layout
Phasor Measurement Units
They are devices which use synchronization signals from the global positioning system (GPS) satellites and provide the phasor voltages and currents measured at a given substation.
Applications of PMU in power System
Adaptive relaying
Instability prediction
State estimation
Improved control
Fault recording
Disturbance recording
Transmission and generation modeling verification
Wide area Protection
Fault location
Adaptive relaying
Adaptive relaying is a protection philosophy which permits and seeks to make adjustments in various protection functions in order to make them more tuned to prevailing power system conditions
CONCLUSIONS
The conclusions extracted form the present work can be summarized as follows:
A technique for estimating the fault location based on synchronized data for an interconnected network is developed and implemented using a modal transform
One-bus deployment strategy is more useful than tree search for fault location detection as it gives more system observability.
3- The average value of mode 1 and 2 of Karrenbauer transformation is used for 3-phase and line-to-line faults, while the average value of the 3 modes is used for line-to-line-ground and line-to-ground faults
4- The results obtained from applying the developed technique applied to a system depicted from the Egyptian network show acceptable accuracy in detecting the fault and locations of different faults types.