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Fault#

( Circuit Element, PD Element )

EPRI’s OpenDSS Documentation for this component: https://opendss.epri.com/Fault.html

#

Name

Type

Default

Units

Description

1

Bus1

string
(bus def.)

Name of first bus. Examples:

bus1=busname
bus1=busname.1.2.3

Bus2 automatically defaults to busname.0.0.0 unless it was previously defined.

2

Bus2

string
(bus def.)

Name of 2nd bus of the 2-terminal Fault object. Defaults to all phases connected to first bus, node 0, if not specified. (Shunt Wye Connection to ground reference)

That is, the Fault defaults to a ground fault unless otherwise specified.

3

Phases

integer

1

Number of Phases.

4

R

real

Ω

Resistance for each phase. Assumed to be Mean value if gaussian random mode.Max value if uniform mode. A Fault is actually a series resistance that defaults to a wye connection to ground on the second terminal. You may reconnect the 2nd terminal to achieve whatever connection. Use the Gmatrix property to specify an arbitrary conductance matrix.

5

%StdDev

real

Percent standard deviation in resistance to assume for Monte Carlo fault (MF) solution mode for GAUSSIAN distribution. Default is 0 (no variation from mean).

6

GMatrix

array of reals
(symmetric matrix)

Use this to specify a nodal conductance (G) matrix to represent some arbitrary resistance network. Specify in lower triangle form as usual for DSS matrices.

7

OnTime

real

0.0

s

Time at which the fault is established for time varying simulations. Default is 0 s, on at the beginning of the simulation.

8

Temporary

boolean

False

Designate whether the fault is temporary. For Time-varying simulations, the fault will be removed if the current through the fault drops below the MINAMPS criteria.

9

MinAmps

real

5.0

A

Minimum current that can sustain a temporary fault.

10

NormAmps

real

Normal rated current.

11

EmergAmps

real

Maximum or emergency current rating.

12

FaultRate

real

0.0

Fault.faultrate

13

pctPerm

real

100.0

Percent of failures that become permanent.

14

Repair

real

0.0

Hours to repair.

15

BaseFreq

real

Hz

Base Frequency for ratings.

16

Enabled

boolean

True

Indicates whether this element is enabled.

17

Like

string
(Fault name)
deprecated

Make like another object, e.g.:

New Capacitor.C2 like=c1 …