7SD8 - Line Differential Protection - EN
7SD8 - Line Differential Protection - EN
7SD8 - Line Differential Protection - EN
SIPROTEC 5
Modular
Tripping, T-trip (minimum) 3-pol., 21ms 3-pol., 19ms 3-pol., 9ms 1/3-pol., 9ms 3-pol., 19ms 3-pol., 9ms 1/3-pol., 9ms
Transformer on line –
Comm.: LWL (int/ext) [km] 24 / – 100 / 170 100 / 170 100 / 170 100 / 170 100 / 170 100 / 170
Comm.: C37.94 (int/ext) –/– /– /– /– /– /– /–
Comm.: G703(1/6), X.21 (int/ext) –/– –/ –/ –/ –/ –/ –/
4I, 3U 4I, 4U 8I, 8U1) 8I, 8U1) 4I, 4U 8I, 8U1) 8I, 8U1)
Inputs and Outputs (maximum) 7BI, 9BO 11BI, 23BO 31BI,46BO1) 31BI,46BO1) 11BI, 23BO 31BI,46BO1) 31BI, 46BO1)
9BI, 16BO changeable changeable 9BI, 16BO changeable changeable
Distance protection (2 in 1) – – – – –
PMU –
SIPROTEC 5
Modular
• 7SD80
• 7SD82, 7SD86, 7SD87
• 7SL82, 7SL86, 7SL87 (2 in 1)
• 4 I, 3 V, 7 BI, 9 BO
• IEC 61850 (Edition 1 and 2)
and further standard protocols
7SD512 devices
• Phase current comparison with static and dynamic • Low communication requirements
stage (sensitivity under all load conditions) • Low CT requirements
functions
• Phase determination robust against signal distortion • High stability at external faults and
Benefits
Device
(87L blocked)
• Reverse interlocking to protect busbars in ring
stations
Benefits
• 3 stages: def. time OC, phase/ground • Simplified settings
Device
• Power cables
requirement
Customer
• Earth fault differential protection for isolated and • Fast fault clearing reduces the strain of power cable
compensated grids isolation due to voltage raising
functions
Benefits
• Determination of zero system power S0 based on • Increased power cable life time
Device
7SD80 7SD80
Pilot wire
• Two integrated protection interfaces PI for
communication via FO (up to 24 km) or pilot wires Barrier transformer
Siemens
solution
(up to 20 km)
• Integrated pilot wire modem
FO
Port B Port B
• Redundant operation of both PIs for optical fiber and • Increased system availability
pilot wire • No external comm. converters
functions
Benefits
• Automatic switchover from optical fiber to pilot wire • Use of present infrastructure
Device
with 2 wires
• Direct replacement of analog protection without Pilot wires
external converters
P
Barrier transformer
• Integrated pilot wire modem with digital Modem
communication
Siemens
solution
Benefits
parameter settings • No additional wiring
Device
Indications Settings
Customer
Benefits
• Monitoring of PI communication • Use of present infrastructure
Device
• Possibility of pre-wiring
requirement
Customer
block
Benefits
• Secondary CT values (1A/5A) • Devices don‘t need to be opened
Device
Benefits
• Monitoring of plausibility • Increased system availability
Device
device design
• Dedicated communication module relieves • Seamless
protection CPU • Setting free
Benefits
• Additional filters on communication module for • Increased system availability
higher communication performance and security • Retrofitting on existing module
• Existing modules can be updated • Secure and safe operation
• Safes investment
Benefits
• Additional filters on communication module for • Retrofitting on existing module
higher communication performance and security • Secure and safe operation
• Existing modules can be updated • Cost savings
• Safes investment
Unrestricted © Siemens AG 2015
Page 18 June 2015 Energy Automation Products
Agenda
• 7SD80
• 7SD82, 7SD86, 7SD87
• 7SL82, 7SL86, 7SL87 (2 in 1)
• 1,5 CB schemes
• Intern: FO up to 100 km, C37.94
• Extern: FO up to 170 km, G703,
X.21 and pilot wires up to 20 km
• 8 I, 8 V, 31 BI, 46 BO (modular)
• 1,5 CB schemes
• Intern: FO up to 100 km, C37.94
• Extern: FO up to 170 km, G703,
X.21 and pilot wires up to 20 km
• 8 I, 8 V, 31 BI, 46 BO (modular)
• 7SD80
• 7SD82, 7SD86, 7SD87
• 7SL82, 7SL86, 7SL87 (2 in 1)
• 8 I, 8 V, 31 BI, 46 BO (modular)
• 8 I, 8 V, 31 BI, 46 BO (modular)
Idiff> Irest
• 87L with two stages for sensitive fault detection and • Maximum of sensitivity
ultra speed tripping in case of high current faults • Use of present and different CTs
functions
Benefits
• Consideration of different CTs and communication • More stability at signal distortion
Device
Benefits
• Automatic topology detection, monitoring and • Simplified parameterization
Device
Benefits
• One control device for the whole bay (6MD8) with • High amount of binary inputs/outputs
synchrocheck, all currents and voltages get • Reduced commissioning effort
considered • Reduced investment
• Fast data exchange via diameter bus IEC61850 (high integration and less devices)
Power transformer
Benefits
• Inrush detection and blocking • Simplified parameterization
Device
(main 2) required
• Compact solution in one device
7SL8 = 2 in 1
• Selectivity and fast tripping
DIFF
• VTs available
DIFF
• One device 7SL8 supports dissimilar redundancy
with differential protection and a full scheme
DIST
Siemens
• Multi zone distance protection for all kinds of star • Increased system availability
point connections • Reduced wiring
functions
Benefits
Device
Benefits
• Ring communication for multi end (>2) • Reduced commissioning effort through
Device
Benefits
• Automatic time synchronization communication
Device
Benefits
network re-routings in IP-MPLS networks communication
Device
• Phasor determination of local currents and voltages • Increased grid quality and stability
with us-accuracy • Increased system availability
functions
Benefits
• GPS time synchronization • Future save investment in new relay device
Device
7SD600 7SD80
SIPROTEC 4 SIPROTEC 5
Modular
Eight freely
Front mounted USB interface
assignable LEDs
7SC80
Time-overcurrent protection
for connecting to low-power 7SJ81 7SK80 Motor protection
transformers
SIPROTEC 5 – the new benchmark for protection, automation, and monitoring of grids
Overcurrent and
Distance protection 7SA8 7SJ8
feeder protection
Combined line
differential and distance 7SL8 7SD8 Line differential protection
protection
Operation Design
• Documentation • Application
• Testing • Specification
• Maintenance
Holistic
Workflow
Commissioning Implementation
• Test • Device selection
• Documentation • Planning
• Engineering
• Settings