Study of Impact on penetration of induction stoves in electrical distribution network of Jorpati, Kathmandu: A case study of Gothatar Feeder
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IOE Pulchowk Campus
Abstract
The use of Induction stoves by replacing traditional ways of cooking can be beneficial
for improving the health of people and for reducing impact on environment. Due to this
Induction stove is gaining massive popularity in new policies initiated by the
government. When there is massive insertion of Induction stove, it can be burden to
electrical power distribution network. For our study residential area of Gothatar is taken
which is supplied by Gothatar feeder of Jorpati Distribution Center. Gothatar feeder is
radial feeder having total length of 10.67 kilometer with Dog, Weasel and Rabbit
conductors. Gothatar feeder consist of total 4946 consumers and consisting of 36 public
transformers and 13 private transformers. This study analyzes the effect of penetration
of induction stove in 11 kV Gothatar feeder of Jorpati Distribution Center using
DigSILENT powerfactory software. Electrical distribution networks are surveyed in
terms of peak power of feeder, active power loss, line loading, voltage deviation, and
transformer loading before and after penetration of Induction stove. For the feasibility
of study different zones of area are created for induction stove penetration. At base case
peak load is seen at 7 p.m. in the month of Poush which is 5.73 MVA with active power
loss of 113 kW. Induction stove is penetrated at various operating range at different
zones at step of 5 percent. When the penetration level of Induction stove reached 25
percent power demand reached 7.67 MVA and active power loss reached 179 kW. As
induction stove penetration level increases the transformers got overloaded. At 25
percent penetration of Induction stove 18 number of the transformer got overloaded at
different sections along with conductors. Analysis of results are performed. The results
showsthat to increase the withstand capacity of distribution network for induction stove
penetration mitigation have to be applied. Mitigation is done by changing transformer,
cable, protection system to next higher available standard size for the reliable operation
of electrical distribution network.
Description
Cooking through electric appliances contributes to suitable time in order to approach
clean cooking. To protect the health of people and reduce impact on environment there
is need in change in current cooking methods. This relates to 4 billion people out of
which 2.7 billion people have no clean cooking facility and also 1.3 billion people with
no proper clean cooking standard.