The role of interfaces in supervisory systems
- Detroit Edison Co., MI (United States)
- Los Angeles Dept of Water and Power, CA (United States)
A supervisory system uses remote terminal units (RTUs) to acquire data and to control equipment at power facilities. RTUs do not perform these functions directly but depend on interfaces at the facilities to perform supervisory control and data acquisition (SCADA) functions. These interfaces must maintain high levels of performance, reliability, and dependability in order to provide the confidence demanded for power system operation. This article describes some important considerations in the interface between a power system and an RTU. A functional block diagram of a power utility RTU is included. The SCADA-RTU interfaces to control station equipment through interposing relays and to measuring circuits through transducers, meters, and other devices. These interfaces have the benefits of being simple, easy to design, readily available, and inexpensive; and they have a proven reliability. Physically, this interface may be distributed throughout the power station or centralized within one or two cabinets. Available panel space and layout of station control centers often is an over-riding consideration.
- OSTI ID:
- 6537753
- Journal Information:
- IEEE Computer Applications and Power; (United States), Journal Name: IEEE Computer Applications and Power; (United States) Vol. 6:2; ISSN ICAPEH; ISSN 0895-0156
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
240100* -- Power Systems-- (1990-)
COMPUTER OUTPUT DEVICES
COMPUTER-GRAPHICS DEVICES
COMPUTERIZED CONTROL SYSTEMS
COMPUTERS
CONTROL SYSTEMS
DATA ACQUISITION SYSTEMS
DISPLAY DEVICES
EXPERT SYSTEMS
HUMAN FACTORS
INTERACTIVE DISPLAY DEVICES
ON-LINE CONTROL SYSTEMS
ON-LINE MEASUREMENT SYSTEMS
ON-LINE SYSTEMS
POWER PLANTS
PROCESS COMPUTERS