TABLE OF CONTENTS
GEK-106243E106243E
DTP Digital Transformer Protection
i
1.
GENERAL DESCRIPTION
1-1
2.
APPLICATION
2-1
2.1
DESCRIPTION 2-1
2.2
CALCULATIONS 2-3
2.2.1
METHOD
2-3
2.2.2
PHASE SHIFT COMPENSATION
2-3
2.2.3
CALCULATION OF CT TRANSFORMATION RATIOS AND RELAY TAPS
2-3
2.2.4
PERCENTAGE RESTRAINT SETTING
2-5
2.3
TRANSFORMER CALCULATIONS (FIGURE 6)
2-6
2.3.1
1
ST
ITERATION. CALCULATIONS REFERRED TO THE TRANSFORMER SHOWN IN
FIGURE 6
2-6
2.3.2
2
ND
ITERATION. NEW CT RATIOS FOR WINDINGS B AND C
2-9
2.3.3
PERCENTAGE RESTRAINT SETTING K
1
(FIGURE 9)
2-9
2.3.4
PERCENTAGE RESTRAINT SETTING K
2
(FIGURE 9)
2-10
2.3.5
CT CONFIGURATION SETTING
2-10
3.
OPERATING PRINCIPLES
3-1
3.1
DESCRIPTION OF THE GENERAL OPERATING PRINCIPLE
3-1
3.2
MEASUREMENT ALGORITHMS
3-2
3.2.1
DIFFERENTIAL CURRENT
3-2
3.2.2
THROUGH CURRENT
3-3
3.2.3
HARMONIC RESTRAINT
3-3
3.2.4
INTERNAL PHASE SHIFT MATCHING
3-3
3.3
INTERNAL STATES
3-4
4.
FUNCTIONS DESCRIPTION
4-1
4.1
PROTECTION FUNCTIONS
4-1
4.2
MONITORING AND REGISTERING FUNCTIONS
4-1
4.2.1
MEASUREMENT 4-1
4.2.2
LED INDICATORS
4-1
4.2.3
SELF-CHECKING FUNCTIONS
4-2
4.3
ANALYSIS FUNCTIONS
4-3
4.3.1
EVENT RECORDER
4-3
4.3.2
OSCILLOGRAPHY RECORDER
4-3
4.4
SETTINGS TABLES
4-4
4.5
INPUTS AND OUTPUTS
4-5
4.5.1
DIGITAL INPUTS
4-5
4.5.2
OUTPUTS
4-5
4.6
HUMAN-MACHINE INTERFACE (MMI).
4-6
4.7
REMOTE COMMUNICATIONS
4-6
5.
SETTINGS
5-1
Summary of Contents for DTP-B
Page 23: ...3 OPERATING PRINCIPLES 3 6 DTP B Digital Transformer Protection GEK 106243E ...
Page 53: ...10 INSTALLATION AND MAINTENANCE 10 2 DTP B Digital Transformer Protection GEK 106243E ...
Page 68: ...12 FIGURES GEK 106243E DTP Digital Transformer Protection 12 3 Figure 3 RS 232 Connection ...
Page 69: ...12 FIGURES 12 4 DTP B Digital Transformer Protection GEK 106243E Figure 4 Dimensions Diagram ...
Page 70: ...12 FIGURES GEK 106243E DTP Digital Transformer Protection 12 5 Figure 5 Front View ...
