Maintenance PhilosophyService High Voltage Products, Transmission GIS, January 2012
ELK 1, 2, 3
© ABB GroupDecember 3, 2013 | Slide 2, 1HC0088391_E01_AA
Gas Insulated SwitchgearMaintenance Philosophy
Maintenance Philosophy for GIS type ELK1, 2, 3
time basedmaintenance
condition basedmaintenance
Criteria§ ≥ 20 years of operation for
indoor application§ ≥ 10 years of operation for
outdoor application
Criteria§ Maximum No of CO* operation is
reached§ Maximum No of SCC* switch
operation is reached§ Combination of No of CO* and
SCC*§ Recommendation in diagnosis
report
* Information is mentioned in operational manualCO: close-open operationSCC: short circuit breaking current
© ABB GroupDecember 3, 2013 | Slide 3, 1HC0088391_E01_AA
Maintenance Philosophy
§ TBM definition§ The criteria for time-based maintenance are aging of
material based on environmental conditions ofinstallation
§ CBM definition§ CBM is to maintain the correct equipment at the right
time. With CBM you can exchange just thecomponents or parts that have been subjected to themost wear over their many years of reliable operation
§ The most efficient way for contributing to life timeexpansion is following maintenance strategy combined withproduct improvements and support services.
TBM & CBM Definition
© ABB GroupDecember 3, 2013 | Slide 4, 1HC0088391_E01_AA
Maintenance Philosophy
§ Dynamic Sealing Kit contents:§ Replacement of dynamic stressed sealings§ Adsorber (filter)
TBM Time Based Maintenance
time basedmaintenance
Criteria§ ≥ 20 years of operation for
indoor application§ ≥ 10 years of operation for
outdoor application
Replacement of:§ Dynamic Sealing Kit CB§ Dynamic Sealing Kit DS§ Dynamic Sealing Kit ES§ Dynamic Sealing Kit FAES
© ABB GroupDecember 3, 2013 | Slide 5, 1HC0088391_E01_AA
Maintenance Philosophy
§ Overhaul contents:§ Replacement of dynamic stressed sealings§ Adsorber (filter)§ All contact parts which are affected during switching,
mechanical wearing
CBM Condition Based Maintenance
condition basedmaintenance
Product§ Overhaul CB§ Overhaul DS§ Overhaul ES§ Overhaul FAES§ Overhaul Drive
HMB, AHMA, HKA, SN§ Retrofit instead of overhaul
Criteria§ Maximum No of CO* operation is
reached§ Maximum No of SCC* switch
operation is reached§ Combination of No of CO* and
SCC*§ Recommendation in diagnosis
report
* Information is mentioned in operationalmanual
© ABB GroupDecember 3, 2013 | Slide 6, 1HC0088391_E01_AA
Maintenance Philosophy
§ Pilot Overhaul contents:§ Replacement of dynamic stressed sealings§ Absorber (filter)§ All contact parts which are affected during switching,
mechanical wearing§ Laboratory analysis of material/contact parts with
report document
CBM Condition Based Maintenance
condition basedmaintenance
Product§ Pilotoverhaul bay§ Pilotoverhaul CB
Criteria§ If the data are not available?
SF6 Gas Insulated SwitchgearMaintenance of circuit-breaker
Service High Voltage Products, Transmission GIS, January 2012
© ABB03/12/2013 | Slide 7
© ABB GroupDecember 3, 2013 | Slide 8, 1HC0088391_E01_AA
Maintenance of circuit-breaker
§ If max. life time of dynamic sealings has been reached§ >20 years for indoor application§ >10 years for outdoor application
à Dynamic Sealing Kit
§ If max. number of operation have been reached§ Max number of close-open operation
(2’000 / 5’000 / 10’000 CO, exact figure is mentioned inoperational manual)
§ Max number of short circuit breaking current(10 / 15 / 20 times the max. breaking current, exact figureis mentioned in operational manual)
§ Combination of close-open operations andshort circuit breaking current
à Overhaul
When do you need to maintain?
© ABB GroupDecember 3, 2013 | Slide 9, 1HC0088391_E01_AA
Maintenance of circuit-breaker
§ If no information available about number of operations andnumber of short-circuit breaking current and the circuit-breaker is older 10 years
à Diagnosis or Pilotoverhaul
When do you need to maintain?
© ABB GroupDecember 3, 2013 | Slide 10, 1HC0088391_E01_AA
Maintenance of circuit-breaker
§ De-commissioning of circuit-breaker includes gas quality check, gas leakagecheck, travel curve and dynamic resistance measurement
§ Installation of Dynamic Sealing Kit§ Re-commissioning of circuit-breaker includes gas quality check, gas leakage
check, travel curve and dynamic resistance measurement
1. Linear movementbushing
2. Operating road3. Support insulator4. Current
connection5. Chamber insulator6. Filter / Adsorber7. Current
connection
Dynamic Sealing Kit – scope of work
© ABB GroupDecember 3, 2013 | Slide 11, 1HC0088391_E01_AA
Maintenance of circuit-breaker
§ De-commissioning of circuit-breaker includes gas quality check, gas leakagecheck, travel curve and dynamic resistance measurement
§ Installation of Overhaul Kit§ Re-commissioning of circuit-breaker includes gas quality check, gas leakage
check, travel curve and dynamic resistance measurement
1. Linear movementbushing
2. Operating road3. Support insulator4. Current
connection5. Chamber insulator6. Filter / Adsorber7. Current
connection8. Puffing cylinder9. Diaphragm10. Erosion finger,
cylinder base,auxiliary nozzle,contact ring
11. nozzle12. contact finger,
finger retainer13. fixed contact pin
Overhaul – scope of work
© ABB GroupDecember 3, 2013 | Slide 12, 1HC0088391_E01_AA
Maintenance of circuit-breaker
§ De-commissioning of circuit-breaker includes gas quality check, gas leakagecheck, travel curve and dynamic resistance measurement
§ Installation of Overhaul Kit§ Re-commissioning of circuit-breaker includes gas quality check, gas leakage
check, travel curve and dynamic resistance measurement§ Laboratory investigation of contacts§ Detailed laboratory report§ Maintenance recommendation for the rest of circuit-breakers within the GIS
1. Linear movementbushing
2. Operating road3. Support insulator4. Current
connection5. Chamber insulator6. Filter / Adsorber7. Current
connection8. Puffing cylinder9. Diaphragm10. Erosion finger,
cylinder base,auxiliary nozzle,contact ring
11. nozzle12. contact finger,
finger retainer13. fixed contact pin
Pilotoverhaul – scope of work
© ABB GroupDecember 3, 2013 | Slide 13, 1HC0088391_E01_AA
Maintenance of circuit-breaker
§ Significant lifetime extension§ Reduced failure risk§ Cost effective solution (compared to unplanned activities)§ Minimized and planned outage time§ Maintain the value of the circuit-breaker§ Maximize switchgear performance§ Identify problems at an early stage, prior to escalation
acquisition of background information for tailoredmaintenance activities through pilot overhaul
Advantages of planned maintenance
SF6 Gas Insulated SwitchgearMaintenance of disconnector switch
Service High Voltage Products, Transmission GIS, January 2012
© ABB03/12/2013 | Slide 14
© ABB GroupDecember 3, 2013 | Slide 15, 1HC0088391_E01_AA
Maintenance of disconnector switchAllocation of disconnector switches within GIS
© ABB GroupDecember 3, 2013 | Slide 16, 1HC0088391_E01_AA
Maintenance of disconnector switchAllocation of disconnector switches within GIS
Disconnectoroperating mechanism(for 3 phases)
Disconnectorswitches
Connecting rod
© ABB GroupDecember 3, 2013 | Slide 17, 1HC0088391_E01_AA
Maintenance of disconnector switch
§ Axial Disconnector§ TE
§ Cross Disconnector§ TX
§ Angle Disconnector§ TV
§ TW
Types of disconnector switches
© ABB GroupDecember 3, 2013 | Slide 18, 1HC0088391_E01_AA
Maintenance of disconnector switchOverview of disconnector switch
disconnectoroperatingmechanism
disconnectorswitch
earthingswitch
bushingcircuit-breaker
© ABB GroupDecember 3, 2013 | Slide 19, 1HC0088391_E01_AA
Maintenance of disconnector switch
§ If max. life time of dynamic sealings has been reached§ >20 years for indoor application§ >10 years for outdoor application
à Dynamic Sealing Kit
§ If max. number of operation have been reached§ Max number of close-open operation
(2’000 / 5’000 CO, exact figure is mentioned inoperational manual)
§ Max number of bus transfer current switching(100 CO @1600A / <40A exact figure is mentioned inoperational manual)
à Overhaul
When do you need to maintain?
© ABB GroupDecember 3, 2013 | Slide 20, 1HC0088391_E01_AA
Maintenance of disconnector switch
§ De-commissioning of disconnector switch includes gas quality check, gasleakage check, motor current and running time measurement
§ Installation of Dynamic Sealing Kit§ Re-commissioning of disconnector switch includes gas quality check, gas
leakage check, motor current and running time measurement
Dynamic Sealing Kit – scope of work
Seal-ring
Seal strip
O-ring
© ABB GroupDecember 3, 2013 | Slide 21, 1HC0088391_E01_AA
Maintenance of disconnector switch
§ De-commissioning of disconnector switch includes gas quality check, gasleakage check, motor current and running time measurement
§ Installation of Overhaul Kit§ Re-commissioning of disconnector switch includes gas quality check, gas
leakage check, motor current and running time measurement
Overhaul – scope of work
Seal-ring
Seal strip
O-ringFixed contact
Contact tubesupport
© ABB GroupDecember 3, 2013 | Slide 22, 1HC0088391_E01_AA
Maintenance of disconnector switch
§ De-commissioning of disconnector switch includes gas quality check, gasleakage check, motor current and running time measurement
§ Installation of Overhaul Kit§ Re-commissioning of disconnector switch includes gas quality check, gas
leakage check, motor current and running time measurement§ Laboratory investigation of contacts§ Detailed laboratory report§ Maintenance recommendation for the rest of disconnectors within the GIS
Pilotoverhaul – scope of work
Seal-ring
Seal strip
O-ringFixed contact
Contact tubesupport
SF6 Gas Insulated SwitchgearMaintenance of operating mechanismAHMA 4/8
Service High Voltage Products, Transmission GIS, January 2012
© ABB03/12/2013 | Slide 23
© ABB GroupDecember 3, 2013 | Slide 24, 1HC0088391_E01_AA
Maintenance of operating mechanism AHMA 4/8
§ For overhaul the operating mechanism has to be removedfrom the circuit breaker
Overview
Circuit-breakerOperating mechanism
© ABB GroupDecember 3, 2013 | Slide 25, 1HC0088391_E01_AA
Maintenance of operating mechanism AHMA 4/8
§ If max. life time of operating mechanism has beenreached§ >20 years for indoor application§ >10 years for outdoor application
à Overhaul
§ If max. number of operation have been reached§ Max number of close-open operation
(10’000 CO, exact figure is mentioned in operationalmanual)
à Overhaul
When do you need to maintain?
© ABB GroupDecember 3, 2013 | Slide 26, 1HC0088391_E01_AA
change over valve USR16 (167)plug (40)
guide bush(711, 713)
connecting rod (o)
pump motor (949)carbon brush (300)
bevel wheel (11)dowel pin (103, 104)screw type couplingwith protective cap (123)
non return valve (7)filter (82)
plug for lockingdevice (253)
guiding rod (o)working piston (o)
screw plug (49)
check valve (301)locking screw (119)
screw plug (251)
Maintenance of operating mechanism AHMA 4/8Overhaul – scope of work
© ABB GroupDecember 3, 2013 | Slide 27, 1HC0088391_E01_AA
Maintenance of operating mechanism AHMA 4/8Overhaul – scope of work
Item Replaced Overhauled7 non-return valve for pump11 straight tooth bevel wheel40 plug49 screw plug82 filter103, 104 dowel pin119 locking screw123 screw type coupling with protective cap
167 change over valve251 screw plug253 plug for locking device300 carbon brush for pump motor301 check valve711, 713 guide bush800 sealings949 pump motor
working pistonconnecting rodsguiding rod
© ABB GroupDecember 3, 2013 | Slide 28, 1HC0088391_E01_AA
Maintenance of operating mechanism AHMA 4/8Overhaul – scope of work
§ For outdoor application will be added following scope:
§ position indicator window (28)§ O-ring seal for position indicator (112)§ screws, washers (135, 136)§ rubber seal (171, 1171, 1280)§ sealing for cover (281)
SF6 Gas Insulated SwitchgearMigration Modules
Service High Voltage Products, Transmission GIS, January 2012
© ABB03/12/2013 | Slide 29
Retrofit Modules
© ABB GroupDecember 3, 2013 | Slide 30
Retrofit Modules
© ABB GroupDecember 3, 2013 | Slide 31
Retrofit Gascompartments
© ABB GroupDecember 3, 2013 | Slide 32
Retrofit Bursting Disc
© ABB GroupDecember 3, 2013 | Slide 33
Retrofit Disconnector
© ABB GroupDecember 3, 2013 | Slide 34
Retrofit Disconnector
© ABB GroupDecember 3, 2013 | Slide 35
SF6 Gas Insulated SwitchgearExample - Maintenance Philosophy
Service High Voltage Products, Transmission GIS, January 2012
© ABB03/12/2013 | Slide 36
© ABB GroupDecember 3, 2013 | Slide 37, 1HC0088391_E01_AA
Example – Maintenance Philosophy
Switchgear A
year of installation: 1990circuit breaker: 1900 no of COcircuit breaker: 3 no of SCC(breaking current unknown)disconnector switch: 500 COearthing switches: 150 CO
Example
Switchgear B
year of installation: 1995circuit breaker: 2500 no of COcircuit breaker: 5 no of SCC(breaking current unknown)disconnector switch: 500 COearthing switches 150 CO
Process of data evaluation§ Collecting data from operational manual or on-site
§ Application outdoor or indoor indoor§ Type of breaker SN 211
§ Max. no of close-open operation 5000 CO§ Max. no of short circuit current 15 / 50kA
§ Max. no of operations for disconnector switch 2000 CO§ Max. no of operations for earthing switch 2000 CO
© ABB GroupDecember 3, 2013 | Slide 38, 1HC0088391_E01_AA
Example – Maintenance Philosophy
Switchgear A
Circuit breaker: Dynamic Sealing Kit à age 21 yearsCircuit breaker drive: Overhaul à age 21 yearsDisconnector switch: Dynamic Sealing Kit à age 21 yearsEarthing switch: Dynamic Sealing Kit à age 21 yearsFast acting earthing switch: Dynamic Sealing Kit à age 21 years
Optional:Migration modules à improvements, if customers want it
for next 25 years
Exemplary solution
Switchgear B
Circuit breaker: Overhaul à combination of CO & SCCCircuit breaker drive: Overhaul à together with CBDisconnector switch: Dynamic Sealing Kit à not requiredEarthing switch: Dynamic Sealing Kit à not requiredFast acting earthing switch: Dynamic Sealing Kit à not required
Optional:Migration modules à not required