Dagfin Martinsen, Remote Control, 7 October 2010 RTU560file/11_E_RTU560_Martinsen.pdf · RTU 560 in...

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RTU560 Hydrology and meteorology systems

Dagfin Martinsen, Remote Control, 7 October 2010


RTU 560 in HydMet applications Background

Hydroelectrical power in Norway In 2007 Norway’s total energy production was 137,7

TWh Hydropower stations produced 135,3 TWh This is 98 % of total production Windpower production was 0,9 TWh Other sources represented 1,5 TWh

As we can understand, the water in the reservoirs is very valuable, and it is of great importance to have the full control of the status, as well for the future, which means the weather.


RTU 560 in HydMet applications The first steps

In the middle of the 1970’s, the user’s demands for accurate and reliable measurements forced a search for new systems. This because of: Poor reliability and stability of existing

equipment Equipment suitable for remote reading was

needed Many points of measurements where affected by water

flow


RTU 560 in HydMet applications The first steps

In the middle of the 1970’s, the user’s demands for accurate and reliable measurements forced a search for new systems. This because of: Poor reliability and stability of existing

equipment Equipment suitable for remote reading was needed Many points of measurements where affected by water

flow

What could be done? A bubbler system seemed to solve

many problems Development of new suitable sensors was

necessary An integration with remote control was natural Introduction of microprocessors made things possible


RTU 560 in HydMet applications The bubbler system

General advantages: No sensors are put into the water – no overvoltage problem All serviceable parts is inside a cubicle No construction of expensive float arrangements


RTU 560 in HydMet applications The bubbler system

General advantages: No sensors is put into the water – no overvoltage problem All serviceable parts is inside a cubicle No construction of expensive float arrangements

Advantages of the ABB system MK4 / MK5 Extremely low air consumption Up to 5 different measurements on 1 system – cost effective “Self-cleaning” effect allows bubbler tube length

up to 500m + Elimination of zero offset drift in sensors eliminates need for

recalibration Quality control of each measurements More than 35 years experience More than 300 systems delivered in Norway and Sweden


RTU 560 in HydMet applications Advantages of ABB’s bubbler systems

The difference between high and low water level is 70 metres. To reach the deep point you have to move more than 500 m out from the shore.


RTU 560 in HydMet applications Advantages of ABB’s bubbler systems

The difference between high and low water level is 70 metres. To reach the deep point you have to move more than 500 m out from the shore.

Deep point of measurement


RTU 560 in HydMet applications Example

This reservoir contains 3.100.000.000 m3 of water at 1055 m above sea level. The top cm water level contains nearly1 000 000 m3


RTU 560 in HydMet applications Hardware

During 35 years the system has resided in various systems: Since early 1990’s in RTU210 Since late 1990’s in RTU211 Some functions were put into the 23VM018 and later in

the 23VM61 boards

In RTU560 almost all functionallity are in use: HART communication on COM port Modbus TCP to HMC controller via ETH port Modbus slave to process display via COM port Optional integrated HMI PLC for control and calculations Archive for storage of historical values Various communication protocols to control systems


Hydmet / RTU applications Water level measurement with ABB KB2 continous bubbling system

System:

• KB2 pneumatic unit

• HART communication via modem directly to RTU560 COM-port

• Low cost 4-line display

• Option: RTU560 integrated HMI

• Quality control in PLC program

• Local storage of historical values in RTU560 archive


Hydmet / RTU applications KB2 continous bubbling system Caracteristics

Continous airflow water level measurements

Expandable with all kinds of meteorological sensors

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KB2 continous system: Can use all types of gauge pressure sensors

Bubbler tube length up to approx. 300 m

Low air comsumption

Accuracy with ABB 265 sensor 0,04% ( +/- 1 cm) on a 25 m range

Digital reading of sensor over HART protocol via modem to COM port

Sensor is dry mounted – no contact with water

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KB2 continous system: Can use all types of gauge pressure sensors

Bubbler tube length up to approx. 300 m

Low air comsumption

Accuracy with ABB 265 sensor 0,04% ( +/- 1 cm) on a 25 m range

Digital reading of sensor over HART protocol via modem to COM port

Sensor is dry mounted – no contact with water

Option: HMC controller and Digiquartz sensor

Accuracy with Digiquartz gauge sensor 0,01% (+/- 0,3 cm) on a 30 m range


Hydmet / RTU applications KB2 continous bubbling system Overview

RP570 / IEC 101

Option RTU560 HMI

Switch

RTU560 G

LineTCP/IP

KB2 pneumatic unit

IEC 104

Display

Modbus

TCP/IP

ABB 265 sensor


Hydmet / RTU applications Water level measurement with ABB MK4 / 5 sequential bubbling system

System:

MK4 / MK5 pneumatic unit

HART communication to HMC controller

Valve control in HMC controller

Communication HMC controller to RTU560 on Modbus TCP

Low cost 4-line display

Or: RTU560 integrated HMI

Quality control in RTU560 PLC program

Local storage of historical values in RTU560 archive


Hydmet / RTU applications MK4 / MK5 sequential bubbling system Caracteristics ( 1 )

• Controlled, sequential airflow water level measurement

• Expandable with all kinds of meteorological sensors

• Can use all types of absolute pressure sensors

• MK4 standard sensor: Digiquartz® 6000-series

• MK5 standard sensor: ABB 265AS

• Bubbler tube length up to approx. 500 m

• Measure up to 5 objects within a radius of 500 m

• Very low air comsumption, an 50 litres airbottle can last several years, depending on configuration

• The measurement sequence and selection of tube is controlled by electrical valves


Hydmet / RTU applications MK4 / MK5 sequential bubbling system Caracteristics ( 2 )

• Accuracy with ABB sensor 0,04% ( +/- 1 cm) on a 25 m range

• Accuracy with Digiquartz sensor 0,01% (+/- 1 cm on 100 m)

• Measurement resolution (all systems): 1 mm

• Digital reading of sensors by HART protocol (RS232 ASCII from Digiquartz sensor)

• Sensor is dry mounted – no contact with water – easy service

• Self-calibrating by elimination of zero-drift


Hydmet / RTU applications MK4 / 5 sequential bubbling system Overview

RP570 / IEC 101

Option RTU560 HMI

Switch

RTU560 G

LineTCP/IP

MK5 pneumatic unit

IEC 104

Display

Modbus

TCP/IP

ABB 265 sensor

Hydmet / RTU applications Complete HydMet station


RP570 / IEC 101

HMC

Optional RTU560 HMI

Switch

RTU560 GLineTCP/IP

RadiationAir Temperature

ABB Ultrasound level sensor

MK4 / 5

Precipitation Wind

IEC 104

Submersible water level sensor

Display

Modbus

TCP/IP

Controlling gates, breakers, other units

Special sensors

KB2

RTU 560 in HydMet applications MK5 system with RTU560CMG and HMC controller Communication via modem on Modbus to RTU211

RTU 560 in HydMet applications Old MK4 system with RTU210

RTU 560 in HydMet applications Upgrade of old RTU210 with RTU560CMG

For further information Contact

John Arne Lerum, Sales Manager

[email protected]

Dagfin Martinsen, Technical Manager

[email protected]


mailto:[email protected]

mailto:[email protected]

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Dagfin Martinsen, Remote Control, 7 October 2010 RTU560file/11_E_RTU560_Martinsen.pdf · RTU 560 in...

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