Monitoreo de Transformadores 2414 Operacion 1
Transcript of Monitoreo de Transformadores 2414 Operacion 1
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SEL Confidential
Monitoreo de
TransformadoresSEL 2414
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Monitor detransformador
Ambient Temperature
Top-Oil Temperature
Hot-Spot TemperatureInsulation Aging Factors
Through-Fault Magnitude
Through-Fault Duration
Accumulated Through Faults
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La temperatura del transformador depende de la
corriente de carga y de la temperatura
0 5 10 15 20 250
50
100
150
Oil
Conductor
Hot Spot
Ambient
Hours
D e g r e e
s
Transformer Loading
0 5 10 15 20 250.5
1.0
1.5
P e r U n i t
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Cálculo del Punto Caliente
θa
θo
θg
Temp (°C)
Hottest Spot
Top Oil
Ambient
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FAA vs. Punto Caliente
Insulation Aging Acceleration Factor
0.00010.001
0.01
0.1
110
100
1000
10000
50 70 90 110 130 150 170 190
Winding Hot-Spot Temperature
A
g i n g F a c t o r ,
F A A
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Pasos de envejecimiento con Temperatura
Time
Hot-Spot
Temperature
120° C
105° C
90° C
Relative
Aging
1 X
135° C
16 X
2 X
4 X
8 X
32 X
64 X
128 X
256 X
Hot-Spot
Temperature
Relative
Aging
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Elemento Termico que reporta Pérdida
de Vida
25
0.07
Loss of Life
Hours
P e r c e n t a g
e
LOL Alarm Point
Acceptable LOL Limit
Measured LOL
0.06
0.05
0.04
0.03
0.02
0.01
020151050
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Alarmas del Modelo Térmico
Temperatura de Aceite Temperatura de punto caliente de
devanado
Eficiencia del Sistema de Enfriamiento Índice de degradación del aislamiento de
los devandos
Pérdida de Vida Útil diaria Pérdida Total de Vida Útil
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Reporte de Perfil Térmico
Máximo Diario y por Hora
Ambient temperature
Calculated top-oil temperature
Measured top-oil temperature Hot-spot temperature
Load (per unit)
FAA
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Reporte Térmico
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Reporte Térmico Horario
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Reporte Térmico Diario
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Causas de Falla
Cierre con Falla Fallas adyacentes Pérdida de Vida Útil
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Ierre con falla
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Causa #1 de Falla: Adyacente
Relay
Through-Fault Current
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Falla Intempestiva
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Las fallas adyacentes reducen el
tiempo de vida útil.
Time (Not to Scale)
Stress
Stress
Encountered
Stress Withstand
Capability
End of Life
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Ambient
Temperature RTD
Top-Oil Temperature RTD
Cooling Stage
Substation
Transformer
Using Internal
RTD Card
Monitoreo Térmico de Transformador
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Requerimientos Mínimos para el monitoreo
Térmico:
• Una corriente de fase.• Una entrada de temperatura ambiente .• Una entrada de temperatura de aceite caliente.
Requerimientos Mínimos para el monitoreode Falla Adyacente:
• 3 corrientes de fase.• 3 Voltajes de fase.• Monitoreo Térmico
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Entradas de Temperatura
Tarjeta Universal de Temperatura:
• RTD: PT100, NI100, NI120, CU10±0.1°C• TC: J, K, T, E ±1°C
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Obtención de Variables
Obtenidas desde Sistema SCADA
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Obtención de Variables
Obtenidas desde Menasajes GOOSE
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Obtención de Variables
Obtenidas desde Transductores
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Esquema de Programación
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Lógica Programable
Categorías de Ajustes
Global Device
Logic Serial Front Pane Report
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SEL-2414 Operadores SELOGIC
Booleanos ( ) parentesis NOT R_TRIG (flanco ascendente), F_TRIG (flanco
descendente) AND, OR
Operadores Analógicos <; >; = <=; >=; <>
Operadores Matemáticos +; – *; /
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SELOGIC FuncionesLatch
Q LT01SET01
RST01
LTnRSETn
SETn
n
= 1 through 32
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SELOGIC FuncionesTemporizadores
Q SV01T
Delay
PU/DO
n
= 1 through 64
IN
PT ET
LOGICSV01SV01
SV0PU
SV0DO
SV0n
SV0nT
SV0n
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SELOGIC FuncionesContadores
SCnnQU
SCnnCD
n = 1 through 32
Counter 0n
SCnnCUSCnnLDSCnnR
SELOGICSCnnQD
SCnn
Output
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SC01CD
SC01CU
SC01LD
SC01R
SC01PV = 7
One Processing Interval
= Do Not Care
Two Processing Intervals
SC01
SC01QU
SC01QD
DeviceWordBits
Setting
Analog
SELOGIC
Settings
SELOGIC FuncionesContadores
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SELOGIC FuncionesLogica Gráfica