ABB Remote Terminal Unit RTU560

ABB Remote Terminal Unit RTU560

Description 

The task to monitor and control the transportation network for energy to reach an economical operation control requests an ongoing penetration of the network down to the lowest levels. The increasing requirements to the availability of energy and their distribution and transportation also increases the demands on the control systems. Improved and new communication possibilities with a higher transmission bandwidth and new transmission media allows the telecontrol technology to realize these tasks.

The RTU560 is required to be configurable to nearly all demands made on remote stations in networks for electricity, gas, oil, water or district heating.

Increasing capabilities of decentralized control and closed-loop control solutions allows to run more functions to be done in the station directly. The RTU560 supports this by own PLC programs which may use for control tasks on one side and by the capability to communicate with the external control, protection and monitoring units via serial lines on the other side. The RTU560 will distribute process information from these units on the demands for station- and network control to several network control centers (NCC).

The RTU560 is using a set of communication units (CMU) and I/O boards with a good modularity to build up the RTU configurations optimized for the application and data point profile in the station. Starting with a configuration for some I/O process data points and one communication unit for typical small pump stations or ring main unit stations over medium size stations for distribution up to large stations on transmission grid level.

The engineering work is a relevant cost factor that can be reduced by standardization of the process data model and the use of state-of-the-art engineering tools. The tool must support all type of configurations and communication network for telecontrol which are possible by the RTU560 family and the customers demand for the distributed stations.

Engineering of the process signals for the RTU560 is done by means of only one tool ‘RTUtil 560′ for all stations with RTU560 units and projects. Project is here in the definition of a telecontrol network with several remote stations combined by router stations etc. RTUtil 560 supports process signal routing from a small station on the lowest level up to the highest level for network control centers (NCC). Typically it includes the conversion from a telecontrol protocol ‘A’ to another telecontrol protocol ‘B’ used on the next level. For example from DNP 3.0 to IEC 870-5-104. RTUtil 560 generates all files requested to run the RTU560 units. To reduce traveling costs and to get a higher flexibility for configuration extensions or modifications, RTUtil 560 and the RTU560 concept allows to download the files into the RTU560 in the stations via INTRANET using WEB browser technology or via the communication line, when the protocol supports file transfer.

Features

The telecontrol system RTU560 should be in the position to transmit nearly all kind of process information, derived from various units in the station, to the control centers and to marshal commands received from the control centers to the addressed control unit within the station.

Beside the acquisition and processing of the directly parallel wired process signals to the RTU560 IO-process interface, the RTU560 is designed for the link of serial communication routes within the station as well to the higher control level. This can be another RTU560 router station or a network control center. Within the station it is the connection of other existing additional control, protection or monitoring devices (Intelligent Electronic Devices = IED) via serial interfaces.

The RTU560 concept allows the economical adaptation to the requested, different serial links by cascading the communication and processing units (CMU=Communication Unit) according to the number of needed serial interfaces.

Functional system features of the RTU560 to fulfill the requirements for remote control stations:

• High functional scope for telecontrol applications functions

• PLC capabilities to execute control and closed loop control applications for pump stations, hydro power plants, station interlocking for electrical substations, etc..

• Archiving of process and station events in a sequence of events list in the Flash memory. Accessible via Intranet or equivalent independent network.

• Archiving of Integrated Totals (ITI) and Analog Measured Values (AMI) in the Flash memory. Accessible via Intranet or equivalent independent network.

• Reading and archiving of disturbance files from protection relays on request of the protection relay. Reading of the disturbance files by file transfer over a separate communication network (e.g. Intranet) on user’s demand. Independent and direct information of available new disturbance files in the disturbance file archive to the NCC.

• Possibility to build (engineer) group alarms for the typical alarm messages, beside a PLC program.

• Interfacing nearly all types and big numbers of IEDs in a station via serial telecontrol protocols, like IEC 609870-5-103, MODBUS, SPA-Bus, DNP 3.0.

• Marshalling and filtering process events to the connected NCCs . Decoupling transaction sequences and delay times to the different NCCs by using a separate process data base per NCC link.

• Remote access for diagnostic purposes via Web-Browser and Internet or Intranet. With detailed information down to each process signal.

• Integrated HMI (Human Machine Interface ) for process super vision and control. Via Web-Browser and Internet or Intranet.

Stock part list:

22AS01
23BA20
23BA22
23BE21
23NG23
23WT21
23ZG21