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Numerical relay

In utility and industrial electric power transmission and distribution systems, a numerical relay is a computer-based system with software-based protection algorithms for the detection of electrical faults. Such relays are also termed as microprocessor type protective relays. They are functional replacements for electro-mechanical protective relays and…

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Description and definition

RelayVoltageCurrentVoltage transformersCurrent transformers
32 related topics

History

FourierEdmund O. Schweitzer, IIISELAREVAABB Group
5 related topics

Comparison with other types

Solid-state relayPotentiometersRectifierDCOp-amp
5 related topics

Protective element types

ANSIANSI Device Numbers
2 related topics

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Overview

Description and definition

Comparison with other types

History

Protective element types

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Map overview Semantic statistics

Numerical relay

Nodes56
Edges55
Triples11
Avg. degree1.96
Density0.035714
Components1

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Numerical relay

Top relations

related to Data display · 10
Numerical relay → Communication, Digital/numerical, DNP3, Ethernet, IEC61850, Modbus, More, RS-232/RS-485, SCADA, This
is a · 1
Numerical relay → computer-based system with software-based protection algorithms for the detection of electrical faults

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Important terminology

relay digital protective protection relays microprocessor system power logic may electric many current numeric used transmission functions communication element algorithms

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Numerical relayis acomputer-based system with software-based protection algorithms for the detection of electrical faults0.90text
Numerical relayrelated to Data displayDigital/numerical0.60section
Numerical relayrelated to Data displayThis0.60section
Numerical relayrelated to Data displayMore0.60section
Numerical relayrelated to Data displaySCADA0.60section
Numerical relayrelated to Data displayCommunication0.60section
Numerical relayrelated to Data displayRS-232/RS-4850.60section
Numerical relayrelated to Data displayEthernet0.60section
Numerical relayrelated to Data displayModbus0.60section
Numerical relayrelated to Data displayDNP30.60section
Numerical relayrelated to Data displayIEC618500.60section

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