Impedance Protection; Distance Measuring Zone, Quadrilateral Characteristic For Series Compensated; Identification; Application - ABB RELION 670 Series Applications Manual

1MRK 505 343-UEN B
Section 7
7.1 Distance measuring zone, quadrilateral characteristic
for series compensated lines ZMCPDIS, ZMCAPDIS,
ZDSRDIR
7.1.1

Identification

Function description
Distance measuring zone,
quadrilateral characteristic for series
compensated lines (zone 1)
Distance measuring zone,
quadrilateral characteristic for series
compensated lines (zone 2-5)
Directional impedance quadrilateral,
including series compensation
7.1.2

Application

7.1.2.1

Introduction

Sub transmission networks are being extended and often become more and more complex,
consisting of a high number of multi-circuit and/or multi terminal lines of very different
lengths. These changes in the network will normally impose more stringent demands on the
fault clearing equipment in order to maintain an unchanged or increased security level of the
power system.
The distance protection function is designed to meet basic requirements for application on
transmission and sub transmission lines (solid earthed systems) although it also can be used
on distribution levels.
7.1.2.2

System earthing

The type of system earthing plays an important roll when designing the protection system. In
the following sections, some hints with respect to distance protection are highlighted.
Solid earthed networks
In solid earthed systems the transformer neutrals are connected solidly to earth without any
impedance between the transformer neutral and earth.
Application manual

Impedance protection

IEC 61850
identification
ZMCPDIS
ZMCAPDIS
ZDSRDIR
IEC 60617 ANSI/IEEE C37.2
identification device number
21
S00346 V1 EN-US
21
S00346 V1 EN-US
21D
Z<->
IEC09000167 V1 EN-US
Section 7
Impedance protection
SEMOD168167-1 v3
SEMOD168165-2 v2
SEMOD168236-1 v1
SEMOD168232-4 v2
SEMOD168232-11 v2
SEMOD168232-14 v2
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