Product Description - GE D90 Plus Instruction Manual
Line distance protection system
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Also See for D90 Plus:
- Instruction manual (688 pages) ,
- Communications manual (222 pages) ,
- Instruction manual (662 pages)
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D90
Chapter 2: Product description
Device overview
PLUS
D90
LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
Plus
Line Distance Protection System
Product description
This section provides a basic functional overview and the technical specifications for the
Plus
D90
.
Designed for superior performance and ease-of-use, the D90
solution for protecting transmission lines from medium voltage (MV) to extra high voltage
(EHV) and cables of various voltage levels. The scalable platform consists of protection,
control, automation, monitoring, communication, digital fault recorder, and security
functionality. This incrementally scalable concept allows advanced customization to suit
specific user requirements. The convergent platform integrates multiple devices,
eliminating external devices and reducing the footprint of relay panels, resulting in reduced
wiring, commissioning, and capital costs. The unique sub-cycle distance algorithm can trip
in less than one power system cycle for source impedance ratios (SIR) up to 30.
The key benefits of the D90
•
Secure subcycle protection ensures trip times less than one cycle.
•
Reliable and secure protection on lines equipped with series compensation.
•
Superior phase selection algorithm ensures secure high speed single-pole tripping.
•
Simplified programmable automation controller eliminates the need for substation
programmable logic controller.
•
Configurable alarm annunciator eliminates the need for separate annunciator panel.
•
Intuitive and easy-to-use large front panel color display with preconfigured
information on metering, fault records, event records, and separate control screen for
bay control.
•
High-end fault and disturbance recording, including internal relay operating signals,
eliminating the need for redundant recording devices.
•
Reduced installation space requirements through compact design.
•
True convergence of protection, metering, automation, bay control functions, multiple
input and output options, and extensive communications capability.
•
Built-in phasor measurement unit streaming synchrophasors as per IEEE C7.118.
Plus
are listed below.
Plus
is a single platform
15
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