Hydran M2

GE Monitoring & Diagnostics

Product Presentation

Utility value/MM customers

Hydran M2

Product Summary

What is it?

It’s a continuous on-line dissolved gas and moisture in oil monitoring device that alerts personnel of developing fault conditions in their transformer

GE Differentiated Value Proposition

• Cost effective solution to help prevent unplanned outages by detecting early developing key fault gases and moisture ingress in the transformer main tank.

• Expandable monitoring capabilities (on board transformer models) to provide further critical information on transformer condition.

• Single valve installation with no consumables to replace and no field calibration required.

Dissolved Gases

Why monitor Dissolved Gases?

A sudden increase of dissolved gas level is the best indicator of a developing incipient fault

o The oil is in contact with every component in the main tank.

o When a fault occurs in a component, oil will be degraded and gases will be generated

o Relative gas concentration changes in relation to the nature, severity and temperature of the fault

o Oil is a transport mechanism…… Gases are produced and distributed into the oil and the gas blanket or conservator

CC

HHHH

CC

HHHH

CC

HHHH

CC

HHHH

CC

HHHH

HH

H

HCC

H

H

H

HH

H

HC

HH

H

H

CC

HHHH

H

H

HC

C

HH

HH

Oil degradation – Typical oil Molecule

HYDROGEN H2

METHANE CH4

ETHANE C2 H6

ETHYLENE C2 H4

ACETYLENE C2 H2

Gases Generated During Breakdownof Dielectric Oil (Gibeault / Hall / Noirhomme)

References:M. Duval, Electra,133,40 (1990 ).T.V. Oommen, Gas Generation in Power Transformers

GA

S C

ON

ST

ITU

EN

TS

250 750 1000 1250 1500 1750500

Fault Temperature ( C )

2000

HOH

CO HOH

HOH

CH2OH

OH

O

O H

HH

HO

C

OHH

O CHO

H

H

H

WATER

WATER

WATER

FURAN

CARBONMONOXIDE

Paper degradation – gases developed

Paper Molecule

CARBON MONOXIDE CO

CARBON DIOXIDE CO2

Gases Generated During Breakdownof Cellulosic Insulation (Gibeault / Hall / Noirhomme)

References:M. Duval, Electra,133,40 (1990 ).T.V. Oommen, Gas Generation in Power Transformers

GA

S C

ON

ST

ITU

EN

TS

Fault Temperature ( C )200 250 300100 500400

Dual Hydran Sensor

HYDRAN M2 - Dual Sensor

Moisture sensor

Gas sensor

• The Sensor

The M2 unit

The CPU - Signal conditioning

Hydran Technology - Gas detection

i

H2

CO

Sensor

COO2

Electro-chemical Detector

Membrane

H2

+ _

C2H2

C2H4

V Signal

• The membrane is a solid film of Fluoro polymer, extremely stable and chemically resistant

• The oil supplies combustible gases and the Oxygen comes from the air

• No internal reagent required to generate the signal

Gas sensor Calibration

• Check Sensor Integrity (Gas phase; 2% H2) After sensor assembly (2 hours)

• Determine the Calibration parameters (H2 in Oil) (2 weeks)– Temperatures: 10, 45 & 70 °C– Concentrations: 0, 100, 350, 1000 & 2000 ppm– Computation of transfer parameters– Comparison with DGA values

• Check System Integrity (Gas phase; 2% H2)

Why monitor Moisture in Oil?

• Water in the oil can lead to water condensation

• Water in oil Increased risk of bubbling formation at high load

• Increased water in oil = Accelerates the rate of insulation aging as it reduces dielectric strength

• Water content measured in ppm is the water contained in the oil

• Measuring moisture in oil is easily done!!

Rectifier Transformer B21 MVA OFWF

0

10

20

30

40

50

Jan-04 Jan-05 Jan-06 Jan-07

Tem

pera

ture

(oC

)

0

3

6

9

12

15

Wat

er in

Oil

(ppm

)

Moisture in Oil vary with operating conditions

Top Oil Temp

Water in Oil

Moisture Sensor long term stability

Long Term Stability of Moiture Sensor

0

1

2

3

4

5

6

7

8

9

10

Jan-04 Jan-05 Jan-06 Jan-07

Date

%R

H H

2O

0

5

10

15

20

25

30

35

40

45

50

To

p O

il T

emp

erat

ure

°C

Top Oil Temp

Water in Oil

H2O

Hz SignalpF

Oil Cavity

Hydran Sensor - Moisture detection

Sensor The CPU - Signal conditioning

H2O

H2O

H2O

OSC

Polymeric Film

-Polymeric moisture sensitive capacitor

Hydran M2 - Sensor Data Sheet

Unit serial number

Unit configuration: I/O’s and Comms

Sensor serial number

Sensor gas & moisture calibration parameters

Customer name

Dynamic Oil Sampling(DOS)

DOS - Effectiveness

•Distance between Hydran M2 and transformer tank

Dynamic Oil Sampling

20

25

30

35

40

45

0:00 6:00 12:00 18:00 0:00

Time

Sen

sor

Tem

per

atu

re °

C

DOS - Functionality

DOS – Oil circulation warm condition

WarmSide

ColdSide

HYDRANSensor

Valve

Transformer Oil

• Oil circulation when the Hydran sensor is warmer than the oil

Oil Flow

Heater

• Oil movement seen via infrared camera when the Hydran sensor is warmer than the oil in the transformer

DOS – Oil circulation warm condition

•Temperature gradient when the Hydran sensor is warmer than the oil

WarmSide

ColdSide

HYDRANSensor

Valve

Transformer Oil

• Oil circulation when the Hydran sensor is cooler than the oil

Oil Flow

Cooler

DOS – Oil circulation cool condition

•Temperature gradient when the Hydran sensor is cooler than the oil

• Oil movement seen via infrared camera when the Hydran sensor is cooler than the oil in the transformer

DOS – Oil circulation cool condition

Lukewarm

HYDRANSensor

Valve

Transformer Oil

• Oil circulation when oil temp and sensor temp are the same

Oil Flow ? LukewarmAlternating Oil Flow

DOS – Oil circulation no condition

• Effective of dynamic oil sampling on the Hydran reading over a long period

Hydran Reading Long Term Stability

0

10

20

30

40

50

60

70

80

90

100

Jan-04 May-04 Sep-04 Jan-05 May-05 Sep-05 Jan-06

Date

Hyd

ran

Rea

din

g P

PM

Product Overview

Single Valve Installation

External Components

Hydran M2 s/nProduct I/O information

Dual sensor

Ground lug

(6x) Cables conduits entry

Sensor clamp

Heater plate

AC power

Display

Alarms Contacts

Expansionport(for future use)

Internal Components

Local Keypad

4-A fuse

RS-232 port

RS-485 Network / TDM connector

Optional I/O interfaces max 4

Ethernet or Modem card

Internal Components

Product Specifications, Features & Options

Measures the concentration of:•Moisture in Oil – RH% (0-100%)

A combined incipient fault gas reading of: •Hydrogen (H2) – 100%•Carbon Monoxide (CO) – 18%•Ethylene (C2 H4) – 1.5%•Acetylene (C2 H2) – 8%

Specifications

• Accuracy– Gas: +/- 10% of reading +/- 25 PPM for Hydran

gas

– Moisture: +/- 2% of reading for %RH

When to use Heated Finned adaptor?

• Oil at the valve: -50 to +105°C (-58 to +221°F). Possible short-duration exposure up to 120°C (248°F).

• Ambient temperatures greater than 40°C, a finned high temperature adaptor is required.

• Local RS232 port

• RS 485 port for remote communication and for networking of multiple units up to 32 units

• Ethernet or Modem connectivity

• Multiple protocols user selectableo DNP 3.0 o Modbuso Hydran® Protocol (upon request only)

• Local or remote interface software Hydran® M2 Host and Multi Host also Preception

Communication Capabilities

I/O capability

• Up to a maximum of (4) four optional input and/or output interfaces can be installed o 4-20 mA analog input cardso 4-20 mA analog output cardso Dual digital input cards

• Five digital output alarm contacts o 2 contacts for gas (high and high high) o 2 contacts for moistures (high and high

high)o 1 contact for system fault

Data logging

• Hourly and daily trend calculation with alarming

• Historical data (default value):o Short Term: 1 record every 15 minutes for a

capacity of 50 dayso Long Term: 4 records a day for a capacity of 3

years and 3 monthso Event History: 3,120 records (alarms, lost of

power, etc.)o Service History: 1,470 records (sensor test,

service information)

Expandable monitoring solution

•Top Oil temp

•Bottom Oil temp

•Ambient temp

•Transformer Load

•OLTC temp

•OLTC position

•Transformer Parameters

-Transformer Parameters-Data acquisition/processing-On-line models-Data storage

Sensor signals

Significant Information Transformer models

•Winding Temp Hot Spot

•Insulation Aging

•Moisture in Barriers, Moisture in Winding Insulation, Bubbling Margin

•Cooling Efficiency

•Tap Changer Over heating, Tap Changer position

•Dynamic Loading

MO150, M2, Transfix Plus

• Easily upgradeable for a more complete transformer monitoring solution

Who can benefit from using HM2

T&D utilities o Generationo Transmissiono Distribution

Industrials o Aluminum smelterso Steel millso Petro-Chemicalo Mining plants.

Transformer manufacturers (OEMs) - Including in their offering monitoring at the lowest possible cost.

• Single valve mounting, one sensor for direct & continuous monitoring of combustible dissolved gas-in-oil and moisture-in-oil

• Sensor measurement update time is under 10 minutes for 90% step change in gas concentration

• No moving parts, no pumps required, no carrier gas (no compressed gas bottle) required, no additional oil lines required

• Internal Sensor self testing feature (automatic and user initiated)

• Hourly and Daily trending user adjustable alarm settings that will alert personnel immediately upon detection of incipient fault gases and/or moisture levels

• Built in thermal condition system - Dynamic oil sampling

• All in one unit - Transformer models capabilities

Product Benefits

Data Correlation & Validation

Extracting an oil sample

Glass syringe

Sensor purging port

How do I validate the M2 PPM reading?

Local Hydran® Reading: 220 PPM

Hydrogen (H2) 100% x

Carbon Monoxide(CO) 18% x

Acetylene (C2H2) 8% x

Ethylene (C2H4) 1.5% x

DGA Results

130

300

2

15

130

54

0.16

0.23

Calculated Hydran Reading184.4

Data Analysis - Hydran Gas Reading Validation

• Hydran® Gas Reading Validation cont.

› Calculated DGA Reading: 185 PPM

› Hydran® Reading: 220 PPM

173P

PM

267

PP

M

- 25 PPM + 25 PPM- 10 % + 10 %220 PPM

Hydran® Reading

Installation

Location on transformer

•Most common four locations to install the Hydran M2

Warning: If these typical locations cannot be used please contact GE Canada Customer Service for assistance.