**4.1.1 ANFIS1 design for fault types classification**

Fig.8 shows the design of an ANFIS1 model that is structured according to the type of fault and represented by the integers 1 to 10. The model consists of ten ANFIS modules which are labeled as ANFIS1-1 to ANFIS1-10. The first module conducts A phase to ground fault (AG) prediction in integer 1 and follows by ANFIS1-2 in integer 2 for 'BG', ANFIS1-3 in integer 3 for 'CG' and so on. ANFIS1-4 to ANFIS1-10 modules represent respective 3P, AB, BC, CA, ABG, BCG and CAG faults. Table 1 shows some relationship parameters between the input and output of ANFIS1's signals.

Fig. 8. ANFIS1 design for fault types classification


Table 1. Input and output parameters from every ANFIS1 module.

#### **4.1.2 A Procedure for classifying the types of fault**

Fig.9 shows a procedure for classifying various types of fault in power distribution network through developing an ANFIS1 model. The first step is the preparation of power network in

development that is responsible for the task of predicting various types of fault in terms of integer 1 to 10 as follows, 1- red phase to ground fault (AG), 2 – yellow phase to ground fault (BG), 3 – blue phase to ground fault (CG), 4 – Three-phase fault (3P), 5 – red phase to yellow phase fault (AB), 6 – yellow phase to blue phase fault (BC), 7 – blue phase to red phase fault (CA), 8 – red and yellow phases to ground fault (ABG), 9 – yellow and blue

Fig.8 shows the design of an ANFIS1 model that is structured according to the type of fault and represented by the integers 1 to 10. The model consists of ten ANFIS modules which are labeled as ANFIS1-1 to ANFIS1-10. The first module conducts A phase to ground fault (AG) prediction in integer 1 and follows by ANFIS1-2 in integer 2 for 'BG', ANFIS1-3 in integer 3 for 'CG' and so on. ANFIS1-4 to ANFIS1-10 modules represent respective 3P, AB, BC, CA, ABG, BCG and CAG faults. Table 1 shows some relationship parameters between the input

**ANFIS modules Input Output**  ANFIS1-1 Post-fault 3-phase RMS current 1 – AG fault ANFIS1-2 " 2 – BG fault ANFIS1-3 " 3 – CG fault ANFIS1-4 " 4 – 3P fault ANFIS1-5 " 5 – AB fault ANFIS1-6 " 6 – BC fault ANFIS1-7 " 7 – CA fault ANFIS1-8 " 8 – ABG fault ANFIS1-9 " 9 – BCG fault ANFIS1-10 " 10 – CAG fault

AG fault (1) BG fault (2) CAG fault (10)

ANFIS1-1 ANFIS1-2 ANFIS1-10

Post-fault 3-phase RMS current

Post-fault 3-phase RMS current

Fig.9 shows a procedure for classifying various types of fault in power distribution network through developing an ANFIS1 model. The first step is the preparation of power network in

phases to ground fault (BCG), 10 – blue and red phases to ground (CAG).

**4.1.1 ANFIS1 design for fault types classification** 

Fig. 8. ANFIS1 design for fault types classification

Table 1. Input and output parameters from every ANFIS1 module.

**4.1.2 A Procedure for classifying the types of fault** 

and output of ANFIS1's signals.

Post-fault 3-phase RMS current XY coordinate layout. The selected power distribution network is a 47 buses practical system. Then, by using the commercial software of PSS-ADEPT, the network is analyzed to record a post-fault 3-phase RMS current for each identified fault point. These points are fault location in XY coordinates for every feeder and radial lines including loads. The post-fault current data is used to train ANFIS1-1 to ANFIS1-10 modules according to respective target output that are integers 1 up to 10. The integers are representative of 10 types of fault. There are 163 selected coordinates for fault points with two fault resistors in the 47 buses practical power network. Therefore, it has about 2462 simulations in generating the data set. Table 2 shows a distribution data for training, testing and classifying the types of fault in the practical system.

Fig. 9. A procedure for developing ANFIS1 in fault types classification


Table 2. The training and testing data for classifying the types of fault in a 47 buses practical system
