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AUTOMATED OPERATION CONDITION MONITORING
POWER DISTRIBUTION NETWORK [PDN]
EARLY STAGE IDENTIFICATION OF POTENTIAL FAULTS
01
機電工程署
EMSD
BACKGROUND
02
TUEN MUN HOSPITAL, HONG KONG▪ Commenced operation in 1990▪ A regional hospital serving Tuen Mun New Town and northwest
regions of the New Territories▪ Serves a population of over 504,000
▪ A Secure PDN is critical to uninterrupted hospital service
▪ Failures of PDN can cause serious damages even fatalities
▪ We implemented a PDN that will identify potential faults so that they will be
rectified before they become problems
▪ This PDN is equipped with advanced sensors, IoT, data analytics software and
supported with preventive operational measures
▪ The first SMART PDN implemented in a public hospital
03
POWER DISTRIBUTION NETWORK [PDN]
THERMAL NUMERICAL MODELS OF PDN
04
SWITCHBOARDS BUS DUCTS CABLES
IEC61439 & IEC60439
TEMPERATURE-RISE = PART TEMPERATURE - AMBIENT
TEMPERATURE
δT = Tpart - Tamb
TEMPERATURE-RISE = BUS BAR TEMPERATURE - AMBIENT
TEMPERATURE
δT = Tbusbar - Tambient
IEC60287 AND IEC60853
Thermal rating of power cable
Cable insulation thermal RD model
IEC61439
SMART PDN
Fiber optic Temperature Sensing System (TSS)
11kV HV & LV Power Cables
0102
Scope
Cable Condition Analysis (CCA)
Partial Discharge Monitoring & Condition monitoring System
HV Switchboards
Asset Health Index (AHI)
Dissolve Gas Analysis (DGA) & Condition Monitoring System
Transformers
0304
Asset Health Index (AHI)
Fiber optic Temperature Sensing System (TSS)
LV Switchboards
Dynamic Load Analysis (DLA)
05
FIBRE OPTIC SWITCHBOARD SENSING SYSTEM
06
30-YEAR OPERATIONNO MAINTENANCE
PASSIVE SENSORSDO NOT NEED ELECTRICTY TO
OPERATE
ACCURATE. STABLE. PROVEN
LOW COSTEASY INSTALLATION
EARLY STAGE FAULT IDENTIFATION
PATTERN ANALYSIS, AI
INSTALLATION – FIBRE OPTIC SENSORS FOR LOW VOLTAGE SWITCHBOARDS
07
➢ Fibre Optic Temperature Sensors
➢ Dielectric strength: 6000VAC
➢ Tracking tested
➢ Accuracy: +/- 0.5oC
➢ Temperature measurement: -10oC to 150oC
➢ Operational Life: 30 years aging-tested
➢ Design is Patent Pending / Patented
08
INSTALLATION – FIBRE OPTIC SENSING CABLES FOR HV POWER CABLES
➢ Feeder Cables supplying power to the
Hospital
➢ 11kV XLPE cables
➢ Fibre Optic Sensing Cables attached to the
surfaces of each of the Power Cables
➢ Capture thermal profiles of the Power
Cables in a 10-second cycle
➢ Measurement Accuracy: +/- 1.0oC
➢ Automatic alarm notification for high
temperature, fibre cable breakage or
system failure
PLACEMENT OF FIBRE OPTIC CABLES
Fibre OpticSensing Cable
09
INSTALLATION – FIBRE OPTIC SENSING CABLES FOR LV POWER CABLES
➢ LV Cables supplying power to the Chiller
System
➢ 230V XLPE cables
➢ Fibre Optic Sensing Cables attached to the
surfaces of each of the Power Cables
➢ Capture thermal profiles of the Power
Cables every 10 seconds
➢ Measurement Accuracy: +/- 1.0oC
➢ Automatic alarm notification for high
temperature, fibre cable breakage or
system failure
Chiller A
LV Power Cable A
Chiller B
LV Power Cable B
Fibre OpticSensing Cable
Fibre OpticSensing Cable
POWER QUALITY ENERGY MANAGEMENT SYSTEM
010
SWITCH BOARD VIEWMAP VIEW
DYNAMIC LOAD REAL-TIME DISPLAY
11
SENSING LOCATION VIEW SENSING LOCATION VIEW
DASHBOARD GUI - LV SWITCHBOARD
3200A 4P ACB
Fiber Optic TSS
MCCB
12
13
DASHBOARD GUI – 11kV HV & LV POWER CABLES
DASHBOARD
THERMAL MAP VIEW – 11KV HV CABLES
REAL-TIME TEMPERATURE READINGS
THERMAL MAP VIEW – LV CABLES
+-
POTENTIAL FAULT IDENTIFICATION: THERMAL PATTERN ANALYSIS
14
15
DEMONSTRATION UNIT – FIBRE OPTIC SENSING FOR SWITCHBOARD
FRONT VIEW REAR VIEW
➢ Demonstrate hotspots of a switchboard and operation of
Fibre Optic Sensing System
➢ Comprise a Circuit Breaker and associated bus bars
➢ Connection joints are heated by heating coils
➢ Fibre Optic Sensing System measures the temperature
readings then conveys the results to users via Cloud /
wireless network
16
OPERATION CONDITION MONITORING – ANYWHERE , ANYTIME
FIBRE OPTIC SENSING SYSTEM - ACCESS GUIDE
STEP 3:TURN ON HEATING ELEMENTS
STEP 4:MONITOR TEMPERATURE READINGS / ALARMS
STEP 1:USER YOUR DEVICE TO SCAN TO CONNECT TO WI-FI
STEP 2:SCAN TO ACCESS THE SYSTEM
