DISPERSED GENERATION INFLUENCE ON FAULT PASSAGE INDICATOR RESPONSE

1
DISPERSED GENERATION INFLUENCE ON FAULT PASSAGE
INDICATOR RESPONSE

• Context of research
• Performed studies presentation
• Simulation of Fault Passage Indicator (FPI)
• Application Network
• Results and discussion
• Conclusions

2
Context of research

• Distribution network
• Link between transport network and consumers
• Development of Dispersed Generation (DG)
• Fault detection and localisation
• Importance in network management
• Evolution due to DG insertion
• Fault passage indicator (FPI)

3
Performed studies presentation

• Simulation of Fault Passage Indicator (FPI)
• Principe of operation
• Crossing of the thresholds (on amplitude or
  derivative (di/dt))
• FPI considered directional and non directional

Directional detection
Non directional detection
4
Performed studies presentation

• Simulation of Fault Passage Indicator (FPI)
• Algorithm

Sleep
No
Fault passage
Yes
Indication Start timer T
Yes
Line energized T gt 8 sec
No
Yes
No
T gt 3h
5
Performed studies presentation

• Network application

Note LV Networks connected to MV network
studied, MV Customers. Main source (bond
towards HV).
Urban network C0505 with the loads, the
switchgear,the DG, the positions of FPI and fault
considered
6
Results and discussion

• Example Indication of FPI_ND1 with
  phase-to-earth fault in network without DG

Fault localisation is correct
7
Results and discussion

• Example Indication of FPI_ND1 with
  phase-to-earth fault in network with DG

Fault localisation is uncorrect
8
Results and discussion

• Example Indication of FPI_D1 and FPI_D0 with
  phase-to-earth fault in network with DG

Fault localisation is correct
9
Results and discussion

• Remarks on the use of FPI

Fault detection
Fault localisation
Type of FPI
Directional
Three phase
Two phase
Single phase
Without DG
With DG
No
FPI_ND1
Yes
Yes
Yes
Yes
No(1)
FPI_D1
Yes
Yes
Yes
Yes
Yes
Yes
FPI_D0
Yes
No
Yes(2)
Yes
Yes
Yes

1. In the case of huge DG
2. In the case of two-phase to earth fault

10
Conclusions and Perspectives

• Conclusions
• Fault passage indicators (FPI)
• Network application
• Perspectives
• Neutral point treatment influence on FPI
  behaviours
• FPI and DG position influence on produced
  indications
• Optimal position of FPI