15-38 kv capswitcher final rep versioncastlepowersolutions.biz/components/southern states/15-38...
TRANSCRIPT
Objective
• Discuss success of CapSwitcher® product line
• Introduce the new 38 kV CapSwitcher®
• Competitive comparison
• Discussion and questions
CapSwitcher® Today
Between the above products, hundreds of units have already been supplied and are in service since the first shipment in December, 2003.
38 kV – 72.5 kV 123 kV – 170 kV
72.5 kV CapSwitcher®
38 kV Capacitor Bank at First Energy Corporation
This unit replaced Joslyn VBM vacuum switches with Zero Voltage Control (ZVC)
Over one-third of all 72.5 kV CapSwitchers®
sold have been installed at 38 kV.
CapSwitcher® Application
Capacitor bank switching is a special duty.
CapSwitcher® Challenges
Restrikes cause cascading overvoltages that can:
• Rupture capacitor cans
• Blow fuses
• Fail arrestors
Potential problems when switching capacitor banks:
Introducing
THE NEW 15.5 - 38 kV CapSwitcher ®
Capacitor Switching with Transient Protection
Resistor Pre-Insertion
Single-Gap SF6 Interrupter
10,000+ Operations
Ships Fully Assembled and Pressurized with Composite Insulators
Ships Within 6 weeks ARO
From the family of SF6 switching products designed specifically for Capacitor Switching
CapSwitcher®
Ratings (15.5 kV – 38 kV Size Units)
80 kV60 kV50 kVPower Frequency Withstand Voltage
200 kV150 kV110 kVBIL
10,000 operationsEndurance Life
23 kA peak at 5400 HzHigh Frequency Transient Making Current
65 kA peakAsymmetrical Making Current25 kA, 1 secShort Circuit Withstand Voltage
6 Ω, 10 Ω, 12 Ω, 20 Ω, 30 Ω, or 90 Ω,
Closing Resistor Values (Pre-Insertion time 5 to 15 msec)
15 sec – C – 6 cycle – ODuty Cycle
600 AmpsCapacitor Switching / Continuous Current
38 kV27 kV15.5 kVMaximum Voltage (50/60 Hz)
Testing Standards
IEEE C37.09 (1999) Sec 4.13Endurance test
IEEE C37.09 (1999) Sec 4.3Continuous current test
IEEE C37.66 (2006) Sec 6.4Fault-making current test
IEEE C37.09a (2005) Sec 4.10Capacitor bank current switching test (BC2, Making Test)
IEEE C37.09a (2005) Sec 4.10Capacitor bank current switching test (BC1, Breaking Test)
IEEE C37.09a (2005) Sec 4.10Capacitor bank current switching test (BC2, Breaking Test)
IEEE C37.66 (2006) Sec 6.3Short-time and peak withstand current test
IEEE C37.66 (2006) Sec 6.8Radio interference voltage (RIV) test
IEEE C37.66 (2006) Sec 6.2Chopped-wave impulse withstand voltage test
IEEE C37.66 (2006) Sec 6.2Full-wave lightning impulse withstand voltage test
IEEE C37.66 (2006) Sec 6.1.4Power frequency withstand voltage test
CAP38 – 600 – XXX R - XXXXXXControl Voltage
48VDC125VDC120VAC
15 kV 27 kV 38 kVBank Size 2 - 6 MVAR 3 - 6 MVAR 3 - 6 MVARCurrent (<225 A) (<135 A) (<80 A)Resistor Size 20 Ω 30 Ω 90 ΩCat # Designation 20R 30R 90R
Bank Size 6.1 - 9 MVAR 6.1 - 16 MVAR 6.1 - 16 MVARCurrent (226 - 335 A) (136 - 360 A) (81 - 240 A)Resistor Size 10 Ω 20 Ω 30 ΩCat # Designation 10R 20R 30R
Bank Size 9.1 - 16 MVAR 16.1 - 27 MVAR 16.1 - 40 MVARCurrent (336 - 600 A) (361 - 600 A) (241 - 600 A)Resistor Size 6 Ω 12 Ω 12 ΩCat # Designation 6R 12R 12R
Capacitor Switching Rating & Continuous Current Rating
Voltage Rating
15.5 kV27 kV38 kV
Example: 38 kV CapSwitcher® for a 38 kV, 8 MVAR cap bank, with 125 VDC control voltage.
Catalog number: CAP38-600-30R-125VDC
Catalog Number
CapSwitcher® Outline Drawings
The 15.5-38 kV CapSwitcher® has 16” phase spacing
Accessories
• Connecting Cable• Cable Connection Box • Mounting Adapter Angles• Structure (when not mounted in capacitor bank structure)
Accessories are ordered separately. These may include:
Traditional Products
Joslyn 38 kV VBM Varmaster with Zero Voltage Close (3 mechanisms and 6
vacuum bottles)
No company offers pre-insertion at 38 kV, in a 38 kV size package.
Joslyn 38 kV VBM Varmaster
(1 mechanism and 6 vacuum bottles)
Cooper 15.5 kV VCR Three Phase
Capacitor Switch(Oil Switch w/ pre-insertion resistors)
There is a need for a 15.5-38 kV CapSwitcher ®There is a need for a 15.5-38 kV CapSwitcher ®
38 kV Capacitor Switching Options:
Competitive Comparison
Joslyn VBM with Current Limiting Reactor
Pros: . Low Cost . Small Size. Ability to be Mounted onthe Capacitor Bank
. Reactor Limits CurrentTransient
Cons: . No Voltage TransientMitigation
. Poor History of Reliability
. Multiple Gap Per PhaseInterrupters
Joslyn VBM without Zero Voltage Close
Pros: . Cost Comparable to 38 kV CapSwitcher®
. Small Size
. Ability to be Mounted on theCapacitor Bank
Cons: . Poor History of Reliability. Multiple Gap Per PhaseInterrupters
. Multiple Mechanisms (one perphase) Required to AchieveSynchronous Closing
. Failure of One of theMechanisms to Operate CanResult in Single Phasing theCapacitor Bank
Competitive Comparison
Joslyn VBM with Zero Voltage Close (ZVC)
Vacuum Switch
CapSwitcher® - Only from Southern States!
15.5 – 38 kV
123 - 170 kV
38 - 72.5 kV
The CapSwitcher® is a family of Products Designed Specifically For Capacitor Switching
Featuring:• SF6 Single Gap Puffer
Interrupters• Spring Open-Spring Close
Mechanism• Closing Resistor for Transient
Mitigation
Now Available from 15.5 kV – 170 kV
CapSwitcher®
15.5 kV to 170 kV
Single Capacitor Bank
Back-to-Back Capacitor Banks
Grounded or Ungrounded Banks
Closing Resistor for Transient Suppression
Size Limitations in Substation
Replacement of Failed Vacuum Capacitor Switches
CapSwitcher® Applications
Designed Specifically for Capacitor
Switching
Maximum Voltage (50/60 Hz) 15.5 kV - 38 kVCapacitor Switching / Continuous Current
600 A
Duty Cycle 15 sec - C - 6 cycle - O
Closing Resistor Values(Pre-Insertion time 5 to 15 ms)
6 Ω, 10 Ω, 12 Ω, 20 Ω, 30 Ω, or 90 Ω
Short Circuit Withstand (rms) 25 kA, 1 secAsymmetrical Making Current 65 kA peakHigh Frequency Transient Making Current
23 kA peak at 5400 Hz
Endurance Life 10,000 Operations
CapSwitcher®
Ratings (15.5 kV – 38 kV Size Units)
A family of SF6 switching products designed specifically for Capacitor Switching
10,000 OperationsEndurance Life
10 time 40 kAFault Closing Rating
5 CyclesInterrupting Speed
25 kAShort Circuit Interrupting Current
104 kA peakAsymmetrical Making Current
40 kA, 1 secShort Circuit Withstand (rms)
8 Ω, 20 Ω, 40 Ω, or 80 ΩClosing Resistor Values(Pre-Insertion time 5 to 15 ms)
O - 5 min – CO - 5 min – CO (The 5 minutes is to discharge the capacitor bank)
(2 faults per hour max because of resistor heating)
Duty Cycle
600 ACapacitor Switching/ Continuous Current
38 kV - 72.5 kVMaximum Voltage (50/60 Hz)
CapSwitcher®
Ratings (38 kV – 72.5 kV)
A family of SF6 switching products designed specifically for Capacitor Switching
A family of SF6 switching products designed specifically for Capacitor Switching
10,000 OperationsEndurance Life
2 time 63 kA10 time 40 kA
Fault Closing Rating
3 CyclesInterrupting Speed
40 kAShort Circuit Interrupting Current
163 kA peakAsymmetrical Making Current
63 kA, 18 cycles40 kA, 1 sec
Short Circuit Withstand (rms)
37.5 Ω, 75 Ω, 150 Ω, or 300 ΩClosing Resistor Values(Pre-Insertion time 5 to 15 ms)
O - 5 min – CO - 5 min – CO (The 5 minutes is to discharge the capacitor
bank) (2 faults per hour max because of resistor
heating)
Duty Cycle
650 ACapacitor Switching/ Continuous Current
123 kV - 170 kVMaximum Voltage (50/60 Hz)
CapSwitcher®
Ratings (123 kV – 170 kV)
CapSwitcher® Application
Power Fuse
CT
72.5 kV CapSwitcher®
Capacitor Bank
48.3 kV Capacitor Bank at Alabama Power Company
72.5 kV CapSwitcher®
Application
Selma TS -44kv Capacitor Bank -Recorded Voltage/Current During Energization 10-12-04 12:21:56 PM
-80
-60
-40
-20
0
20
40
60
80
39.0 39.5 40.0 40.5 41.0 41.5 42.0 42.5 43.0
Cycles Recorded From Start
Bus
s Vo
ltage
In K
V (4
99S3
)
-600
-450
-300
-150
0
150
300
450
600
Cap
acito
r Ban
k C
urre
nt In
Am
ps
Ph 1 KV Ph 2 KV Ph 3 KV Ph 3 Amps
Resistor Pre-insertion
Main Shorts out resistor
1.1 PU Overvoltage
“Pre-insertion works every time”
Single Capacitor Bank Switching:
Interrupter Contact Capacitor
Bank
Closing resistor will limit voltage transients to ~20% over-voltage
No inrush reactor is required with a closing resistor.
Closing Resistor
Resistor Contact
~V
CapSwitcher ®
CapSwitcher® Applications:
The closing resistor limits currents on closing to within breaker ratings.
Back to Back Switching with CapSwitcher®
:
Interrupter Contact
Closing resistor reduce inrush current transients to acceptable levels.
Closing ResistorResistor Contact
CapSwitcher ®
Interrupter Contact
Closing ResistorResistor Contact
CapSwitcher ®
~V
CapSwitcher® Applications:
On back to back applications it is necessary to limit inrush currents.
No Resistor
Resistor Switches inClosing Resistor
Main Contacts Short Out Resistor
Switching with closing resistor reduces switching surges
V
I
I
Close Switcher on Capacitor
Switching Surge ~70% Over-voltage
Switching Surge ~20% Over-voltage
~70%Over-voltage
V
CapSwitcher®
Switching Surge Comparisons:
~20%Over-voltage