Vaisala Optimus OPT100 User manual

M211858EN-E
User Guide
Vaisala Optimus™DGA Monitor for Transformers
OPT100

PUBLISHED BY
Vaisala Oyj
Vanha Nurmijärventie 21, FI-01670 Vantaa, Finland
P.O. Box 26, FI-00421 Helsinki, Finland
[phone]
Visit our Internet pages at www.vaisala.com.
© Vaisala 2019
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Table of Contents
1. About This Document................................................................................... 5
1.1 Version Information.......................................................................................... 5
1.2 Related Manuals................................................................................................ 5
1.3 Documentation Conventions...........................................................................6
1.4 Trademarks........................................................................................................ 6
2. Product Overview........................................................................................... 7
2.1 Overview of OPT100 DGA Monitor................................................................. 7
2.2 Basic Features and Options............................................................................. 7
2.3 Measured Parameters.......................................................................................7
2.3.1 Calculating Relative Moisture Saturation Inside Transformer.............. 8
2.4 Notes for Normal Operation............................................................................9
2.5 Parts with Ground Mounting Set...................................................................10
2.6 Parts with Wall Mounting Set.........................................................................12
2.7 Cable Glands and Connectors........................................................................14
2.8 Interior Parts.....................................................................................................15
2.9 Status LEDs...................................................................................................... 16
2.10 Gas Level Alerts............................................................................................... 17
2.11 Modbus Protocol..............................................................................................17
2.12 DNP3 Protocol................................................................................................. 18
2.13 IEC 61850 Protocol.......................................................................................... 18
3. User Interface..................................................................................................19
3.1 Overview of User Interface.............................................................................19
3.1.1 Connecting to User Interface..................................................................19
3.1.2 Measurements Page.................................................................................21
3.1.3 DGA Diagnostics Page............................................................................23
3.1.4 Alerts Page...............................................................................................25
3.1.5 Control Page............................................................................................ 26
3.1.6 Settings Pages......................................................................................... 27
3.1.7 About Page.............................................................................................. 27
3.1.8 Messages.................................................................................................. 28
3.1.9 Status Indicator....................................................................................... 29
3.2 Starting Measurement................................................................................... 30
3.3 Configuring Gas Level Alerts..........................................................................31
3.4 Acknowledging Gas Level Alerts..................................................................32
3.5 Setting Date and Time................................................................................... 33
3.6 Changing Administrator Password...............................................................35
3.7 Configuring Serial Line and Modbus RTU....................................................36
3.8 Configuring Network Connection.................................................................37
3.9 Configuring DNP3 Protocol...........................................................................38
3.10 Configuring IEC 61850 Protocol....................................................................39
3.11 Configuring Relays.........................................................................................40
Table of Contents
1

4. Maintenance.....................................................................................................41
4.1 Maintenance Safety.........................................................................................41
4.2 Cleaning DGA Monitor.................................................................................... 41
4.3 Maintenance....................................................................................................42
4.4 Updating DGA Monitor Software................................................................. 42
4.5 Starting Autocalibration Manually............................................................... 44
4.6 Repair...............................................................................................................45
4.6.1 Stopping Measurement.......................................................................... 45
4.6.2 Turning O the DGA Monitor for Maintenance................................... 45
4.6.3 Verifying Safety After Repair................................................................ 46
4.6.4 Turning On DGA Monitor After Maintenance...................................... 46
4.6.5 Starting Measurement............................................................................ 47
4.7 Uninstalling DGA Monitor..............................................................................47
5. Troubleshooting............................................................................................50
5.1 Problem Situations.........................................................................................50
5.2 Resolving a Device Error.................................................................................51
6. Technical Data................................................................................................53
6.1 OPT100 Technical Specification....................................................................53
6.2 OPT100 Spare Parts and Accessories.......................................................... 58
6.3 OPT100 Dimensions with Ground Mounting Set........................................59
Appendix A: Modbus Reference.................................................................60
A.1 Default Communication Settings.................................................................60
A.2 Function Codes.............................................................................................. 60
A.3 Modbus Registers.......................................................................................... 60
A.3.1 32-Bit Floating Point Format.................................................................. 61
A.3.2 Measurement Data...................................................................................61
A.3.3 Alert Registers.........................................................................................64
A.3.4 Test Value Registers................................................................................ 67
A.4 Modbus Communication Examples............................................................. 68
Index....................................................................................................................71
Technical Support............................................................................................73
Warranty............................................................................................................ 73
Recycling........................................................................................................... 73
OPT100 User Guide M211858EN-E
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List of Figures
Figure 1 OPT100 Front Parts with Ground Mounting Set..................................... 10
Figure 2 OPT100 Rear Parts with Ground Mounting Set........................................ 11
Figure 3 OPT100 Front Parts with Wall Mounting Set............................................12
Figure 4 OPT100 Rear Parts with Wall Mounting Set............................................. 13
Figure 5 OPT100 DGA Monitor Cable Glands and Connectors............................14
Figure 6 OPTPSU1 Power Supply Unit Cable Glands and Connectors...............14
Figure 7 Inside OPT100 DGA Monitor Enclosure..................................................... 15
Figure 8 Inside OPTPSU1 Power Supply Unit Enclosure........................................ 16
Figure 9 Status LEDs........................................................................................................16
Figure 10 Measurement Graph........................................................................................21
Figure 11 Measurement Graph for 1 Day Rate of Change Values......................... 22
Figure 12 Table of Latest Values.................................................................................... 23
Figure 13 Duval Triangles on the DGA Diagnostics Page....................................... 24
Figure 14 Alerts Page........................................................................................................25
Figure 15 Control Page.....................................................................................................26
Figure 16 Settings Page................................................................................................... 27
Figure 17 About Page.......................................................................................................28
Figure 18 Gas Level Alert Message Active..................................................................29
Figure 19 Alerts Page.........................................................................................................31
Figure 20 Alert Screen with Methane Caution Alert Visible...................................33
Figure 21 Date and Time Settings Page...................................................................... 33
Figure 22 Changing Administrator Password.............................................................35
Figure 23 Modbus RTU Settings Page..........................................................................36
Figure 24 IP Address Settings Page..............................................................................37
Figure 25 DNP3 Settings Page....................................................................................... 38
Figure 26 IEC 61850 Settings Page............................................................................... 39
Figure 27 Relay Settings Page.......................................................................................40
Figure 28 About Screen with Current Software Version and Update Button... 43
Figure 29 Device Error Active..........................................................................................51
Figure 30 Dimensions with Ground Mounting Set....................................................59
List of Figures
3

List of Tables
Table 1 Document Versions (English)...........................................................................5
Table 2 Related Manuals...................................................................................................5
Table 3 Measured Parameters.........................................................................................7
Table 4 Calculated Parameters.......................................................................................8
Table 5 Meaning of Status LEDs................................................................................... 16
Table 6 Modbus RTU Communication Settings........................................................17
Table 7 Modbus TCP Communication Settings.........................................................17
Table 8 Data Point Selection Criteria..........................................................................25
Table 9 System Statuses................................................................................................ 29
Table 10 Troubleshooting Table.....................................................................................50
Table 11 Measured Parameters in Oil............................................................................53
Table 12 Measurement Performance............................................................................ 53
Table 13 Calculated Parameters.....................................................................................54
Table 14 Operating Environment...................................................................................54
Table 15 Power Supply..................................................................................................... 55
Table 16 Outputs................................................................................................................ 55
Table 17 Mechanical Specifications...............................................................................56
Table 18 Type Tests............................................................................................................ 57
Table 19 Compliance......................................................................................................... 58
Table 20 Spare Parts and Accessories..........................................................................58
Table 21 Default Modbus Serial Communication Settings..................................... 60
Table 22 Supported Function Codes............................................................................60
Table 23 Measurement Data Registers (Read-Only).................................................61
Table 24 Alert Registers (Read-Only).......................................................................... 65
Table 25 Test Value Registers (Read-Only).................................................................67
OPT100 User Guide M211858EN-E
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1. About This Document
1.1 Version Information
Table 1 Document Versions (English)
Document Code Date Description
M211858EN-E April 2019 This version. Applicable from software version 1.7.0
onwards. Added sections:
•Notes for Normal Operation (page 9)
•IEC 61850 Protocol (page 18)
•Configuring IEC 61850 Protocol (page 39)
•DGA Diagnostics Page (page 23)
•Changing Administrator Password (page 35)
•Starting Autocalibration Manually (page 44)
•Resolving a Device Error (page 51)
Updated sections:
•Overview of User Interface (page 19)
•Updating DGA Monitor Software (page 42)
•Problem Situations (page 50)
M211858EN-D July 2018 Applicable from software version 1.4.0 onwards.
Added content for gas level alert feature and relay
control. Updated description of Status LEDs. Updated
Troubleshooting.
M211858EN-C April 2018 Applicable from software version 1.3.0 onwards.
Added sections Configuring DNP3 Protocol
(page 38) and Updating DGA Monitor Software
(page 42).
1.2 Related Manuals
Table 2 Related Manuals
Document Code Name
M211857EN OPT100 Installation Guide
Chapter 1 – About This Document
5

1.3 Documentation Conventions
Warning alerts you to a serious hazard. If you do not read and
follow instructions carefully at this point, there is a risk of injury or even death.
WARNING!
Caution warns you of a potential hazard. If you do not read and
follow instructions carefully at this point, the product could be damaged or
important data could be lost.
CAUTION!
Note highlights important information on using the product.
Tip gives information for using the product more eciently.
Lists tools needed to perform the task.
Indicates that you need to take some notes during the task.
1.4 Trademarks
OPTIMUS™is a trademark of Vaisala Oyj.
All other product or company names that may be mentioned in this publication are trade
names, trademarks, or registered trademarks of their respective owners.
OPT100 User Guide M211858EN-E
6

2. Product Overview
2.1 Overview of OPT100 DGA Monitor
OPT100 is a device for monitoring the internal condition of an electrical transformer using
dissolved gas analysis (DGA), also known as fault gas analysis. OPT100 is intended to be
installed next to the transformer, and connected to it by two oil lines. OPT100 draws oil from a
transformer, measures the concentrations of hydrogen, moisture, and several hydrocarbons in
the oil, and returns the oil back to the transformer.
Measurement results can be transferred via communication interfaces to the substation's
SCADA (Supervisory Control And Data Acquisition) system. The data is also available for
viewing by human operators through the browser-based user interface.
More Information
‣OPT100 Technical Specification (page 53)
2.2 Basic Features and Options
• Measurement of seven fault gases and moisture in oil
• Several calculated parameters and gas ratios available
• Ethernet and RS-485 interfaces for SCADA integration
• Modbus protocol (RTU and TCP)
• DNP3 (Distributed Network Protocol) over Ethernet
• Three configurable relay outputs
• Gas level alerts for measured values and rate of change (ROC)
• IP66 rated enclosure
• Optional software features
• DGA diagnostics using Duval triangles
• IEC 61850 protocol over Ethernet
• Installation options:
• Ground mounting set
• Wall mounting set
• Weather shield
2.3 Measured Parameters
Table 3 Measured Parameters
Parameter Output Unit(s) Description
Methane (CH4) ppmvMeasured from extracted gas
Ethane (C2H6) ppmvMeasured from extracted gas
Chapter 2 – Product Overview
7

Parameter Output Unit(s) Description
Ethylene (C2H4) ppmvMeasured from extracted gas
Acetylene (C2H2) ppmvMeasured from extracted gas
Carbon monoxide (CO) ppmvMeasured from extracted gas
Carbon dioxide (CO2) ppmvMeasured from extracted gas
Hydrogen (H2) ppmvMeasured in-oil
Moisture (H2O) ppmwand %RS Measured in-oil as relative
saturation (%RS). See
Calculating Relative Moisture
Saturation Inside Transformer
(page 8).
Table 4 Calculated Parameters
Property Output Unit(s) Description
Total dissolved combustible
gases (TDCG)
ppmvCombined total of H2, CO, CH4, C2H6, C2H4, and
C2H2.
Rate of change (ROC) ppmvAvailable for single gases and TDCG for 24 h,
7 d, and 30 d periods.
Gas ratios for:
• CH4/H2
• C2H2/C2H4
• C2H2/CH4
• C2H6/C2H2
• C2H4/C2H6
• CO2/CO
Ratio Ratio is calculated from 24 h average values of
the gases.
2.3.1 Calculating Relative Moisture Saturation Inside
Transformer
DGA monitor measures relative oil moisture (%RS) inside its
enclosure. The temperature of the moisture sensor location does not represent
the temperature inside the transformer tank or inside the oil circulation pipes.
Additionally, oil sampling through the steel pipes changes the oil temperature.
As relative moisture saturation is strongly temperature dependent, the %RS
measured and output by DGA monitor is not equal to %RS inside the
transformer tank.
CAUTION!
OPT100 User Guide M211858EN-E
8

However, DGA monitor does output both the measured %RS and the temperature where it was
measured. To calculate the %RS in the true temperature inside the transformer, use the
following equation.
%RST2= % RST1× 10
A T2− T1
T1 + 273.15 × T2 + 273.15
%RS(T1) Relative moisture saturation output by DGA monitor
T1 Temperature of the in-oil measurement chamber inside DGA monitor
T2 Temperature at location where new relative moisture saturation is needed at
A-1662.70
A is a water solubility coecient. Vaisala uses this standard value in all of its oil
moisture transmitters. You can also use this equation with an oil-specific
coecient if it has been determined for your oil.
2.4 Notes for Normal Operation
In normal operation the DGA monitor performs measurement cycles automatically without any
operator involvement. Integration with a SCADA system is recommended for convenient
monitoring of measurement results and system status. Status LEDs on the enclosure door
indicate system status on a general level, and detailed status is available from the browser-
based user interface.
Note the following for successful operation:
• Keep the doors of the DGA monitor enclosures closed and locked during normal
operation. This is important for keeping the inside of the DGA monitor clean and the
measurement environment stable.
• Keep the measurement running continuously to achieve the best measurement
performance.
• If the DGA monitor will be unpowered for a long time (for example, due to a transformer
maintenance), set the system to Standby. See Stopping Measurement (page 45).
Chapter 2 – Product Overview
9

2.5 Parts with Ground Mounting Set
1
2
3
4
5
6
7
Figure 1 OPT100 Front Parts with Ground
Mounting Set
1Status LEDs
2OPT100 DGA Monitor
3Door lock (3 pcs)
4Power supply unit
5Door lock
6Mounting stand
7Wedge anchors (6 pcs)
OPT100 User Guide M211858EN-E
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1
2
3
Figure 2 OPT100 Rear Parts with Ground
Mounting Set
1Weather shield
2Cable glands and oil connections for
DGA Monitor
3Cable glands for power supply unit
Chapter 2 – Product Overview
11

2.6 Parts with Wall Mounting Set
1
2
3
4
5
Figure 3 OPT100 Front Parts with Wall
Mounting Set
1Status LEDs
2OPT100 DGA Monitor
3Door lock (3 pcs)
4Power supply unit
5Door lock
OPT100 User Guide M211858EN-E
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1
2
3
4
5
6
Figure 4 OPT100 Rear Parts with Wall
Mounting Set
1Installation beam (upper)
2Weather shield
3Installation beam (lower)
4Cable glands for DGA Monitor
5Cradle for power supply unit
6Cable glands for power supply unit
Chapter 2 – Product Overview
13

2.7 Cable Glands and Connectors
1 2 3 4 5 6 7
Figure 5 OPT100 DGA Monitor Cable Glands and Connectors
1Oil Out: connection for oil return line
2Oil In: connection for oil intake
3Ground terminal
4RS-485: cable gland for RS-485 connection
5Relay control out: cable gland for relay control to power supply unit
6DC in: 24 VDC connection from power supply unit
7Ethernet: external RJ45 connector for permanent Ethernet connection
1 2 3 4 5 6 7
Figure 6 OPTPSU1 Power Supply Unit Cable Glands and Connectors
1Ground terminal
2AC in: Mains power input. 100 ... 240 VAC, 50 ... 60 Hz, 10 A
3Spare
4Spare
5Relay out: Relay output. Max 250 VAC, 10 A
6Relay control in: Relay control from DGA monitor
7DC out: DC out to DGA monitor. 24 VDC, 20 A
OPT100 User Guide M211858EN-E
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2.8 Interior Parts
1
2
3
5
6
4
7
17
16
15
14
13
1198 1210
Figure 7 Inside OPT100 DGA Monitor
Enclosure
1Valve 5 (bleed valve). Must be
manually accessed during
initialization and uninstallation.
2Valve 4
3Oil block
4Valve 3
5Valve 2
6Valve 1
7In-oil measurement of hydrogen and
moisture
8Oil out
9Oil in
10 Terminal blocks for RS-485 output
(Y1) and relay control (Y2)
11 Circuit breakers for DC power: main
breaker (F2) and breaker for heating
power (F1)
12 Terminal block for DC in (Y3)
13 Surge arresters
14 Ethernet connectors:
ETH0 Connection for SCADA, wired
to external Ethernet
connector
ETH1 Service port for temporary
local use, with IP address
192.168.28.2
15 Processing unit
16 Control unit
17 Optical measurement module for
extracted gases
Chapter 2 – Product Overview
15

1
2
3
4
6
5
9
10
8
7
Figure 8 Inside OPTPSU1 Power Supply Unit
Enclosure
1Circuit breaker for AC power (F1)
2Surge arresters
3Power switch (S1)
4Power supply
5Relays (3 pcs). Each relay has a LED
that is lit when the relay is active.
6DC OK LED. If flashing, check DC
wiring.
7DC out terminal block (X5)
8Relay control terminal block (X4)
9Relay output terminal block (X3)
10 Mains power in terminal block (X1)
2.9 Status LEDs
Figure 9 Status LEDs
Table 5 Meaning of Status LEDs
Color Meaning
Green DGA monitor is operating normally and performing measurement cycles.
Green (flashing) DGA monitor is in standby mode. User interaction is required to begin
measurement.
Yellow DGA monitor requires user interaction. For example, it is being initialized,
or has been uninstalled.
Yellow (flashing) Gas level alert is active, caution limit exceeded.
Red DGA monitor is in error state. User interaction is required.
Red (flashing) Gas level alert is active, alarm limit exceeded.
OPT100 User Guide M211858EN-E
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2.10 Gas Level Alerts
DGA monitor has individual gas level alerts for measured gases and total dissolved
combustible gases (TDCG). Each gas has four possible alerts (latest measured value, ROC 1
day, ROC 7 days, ROC 30 days) and two separate limits (caution and alarm). Additionally,
moisture alerts (ppm and %RS) can be configured for latest measured values.
Active gas level alerts are communicated in the user interface, status LEDs, and output
protocols. They also control relay activation. Once activated, alerts remain active until
acknowledged by the admin user, or the automatic acknowledgement feature (if enabled).
See Acknowledging Gas Level Alerts (page 32).
In addition to alert limits themselves, DGA monitor implements some additional rules to
prevent unnecessary alerts:
• Only reliable measurement results can activate alerts. If the DGA monitor has been in the
standby state, it must complete 3 measurement cycles before alarms can be activated.
• Alerts will not be activated during the first autocalibration after installation.
• A single large jump in the measured value that exceeds the alert limit will not activate an
alert. The previous measurement must be at least 75% of the latest measurement for an
alert to be activated. If the measured value remains over the limit when the next
measurement cycle is completed, the alert is activated.
2.11 Modbus Protocol
Data measured by DGA monitor can be read using Modbus protocol. Supported Modbus
variants are:
• Modbus RTU (serial Modbus) over the RS-485 interface
• Modbus TCP over the Ethernet interface
Table 6 Modbus RTU Communication Settings
Property Specification
Baud rate 19200
Parity Even
Data bits 8
Stop bits 1
Modbus RTU slave address 240
Table 7 Modbus TCP Communication Settings
Property Specification
IP address of Modbus server IP address of DGA monitor on interface ETH0
Modbus server port 502
Chapter 2 – Product Overview
17

More Information
‣Modbus Registers (page 60)
2.12 DNP3 Protocol
Data measured by DGA monitor can be read using DNP3 (Distributed Network Protocol) over
the external Ethernet connection. DNP3 protocol can also be disabled if it is not needed.
You can download the DNP3 device profile in XML format from the Settings > Network >
DNP3 page of the user interface. It is needed to configure your DNP3 master system. A
description of the interface is also available as a separate PDF document.
2.13 IEC 61850 Protocol
IEC 61850 protocol is an optional feature and requires a license. If a license is not
installed on the DGA monitor, you cannot enable the protocol. Contact Vaisala for
acquiring the license.
Data measured by DGA monitor can be read using IEC 61850 protocol over the external
Ethernet connection. IEC 61850 protocol can also be disabled if it is not needed.
The following supporting documents describe the data and functionality available through IEC
61850 protocol:
• IED Capability Description (ICD) file
• Protocol Implementation Conformance Statement (PICS)
• Model Implementation Conformance Statement (MICS)
You can download the documents from the OPT100 user interface at Settings > Network >
IEC 61850.
OPT100 User Guide M211858EN-E
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