Page 44 - IJEEE-2022-Vol18-ISSUE-1

40 | Saeed, Abdulhassan & Khudair
simulation of arc current waveforms of these models is
III. ARC FAULT SIMULATION AND ANALYSIS shown in Fig.5 and Fig.6.

A. Series arc simulation analysis Fig. 2: The proposed DEE of Mayr arc model in
MATLAB.
It is developed simulation circuit design for assessing
Fig.5 shows series arc fault and it can be observed from
the efficacy of the arc in MATLAB/Simulink platform. The this figure, that when the voltage reached to a certain value
(220v), the arc is initiated.
following are the arc simulation model parameters in this
Fig .6 shows the parallel arc current simulation result
case are listed in table (1), the simulation time ranges from with high current due to short circuit of load.

0 to 0.2 seconds, after which an arc current is generated by

using Controlled Current Source and measured using the

AM1 block. The VM1 block calculates the voltage across

the arc, and ?????????? = 5?? represents load resistance
(constants resistance of the load is assumed).

The differential equation editor (DEE) block is used

to describe Mayr arc model as shown in Fig.2.this block is

also calculating the arc current ???????? [9]: (16)
???????? = ???? × ??

??0 = log ??0 (17)
??0 = 1??4???? (18)

Where: ??0 is the initial condition (initial arc

conductivity). The user defined function is used to build the

arc fault, so when the voltage source reach to a certain value

the arc initiated, the proposed MATLAB/Simulink model is

shown in from Fig.3.

B. Parallel arc simulation analysis

In the parallel arc model, the simulation analysis is the
same as the series arc fault analysis with the same model
parameters as listed in table (2), however the difference the
arc is controlled by using unit step function, and arc start
time is 0.05 sec, the load is short circuit for parallel arc fault
[11], the proposed Simulation model is shown in Fig.4.

In the simulation model of series and parallel shown in
Fig.3. and Fig.4 respectively, with model parameters, the

Fig.3: Series arc fault simulation model.