Tovihoto inaugurates upgraded 132/66/33 KV sub-station

Tovihoto inaugurates upgraded 132/66/33 KV sub-station
Tovihoto Ayemi inaugurating the upgraded sub-station. (NP)
Staff Reporter DIMAPUR, DEC 9 (NPN) | Publish Date: 12/9/2020 12:00:10 PM IST

The 132/66/33 KV sub-station Nagarjan that was upgraded to 2x100 MVA was formally inaugurated by advisor power H Tovihoto Ayemi here on Wednesday.

132/66/33 KV sub-station was constructed during the late 70s and commissioned in the year 1981, with an initial installed capacity of (2x20MVA), which caters to the entire Dimapur and Peren districts. Though the two 100 MVA transformers had been in operation for some time now, the formal inauguration could not be done in time due to various reasons.

Speaking at the inaugural programme, Tovihoto Ayemi said that the construction of the new 2x100 MVA sub-station was yet another remarkable achievement of the power department. He expressed hope that with the formal inauguration and operationalisation of 2x100 MVA, the people of Dimapur and other districts would be greatly benefited.

Advisor also urged the public to extend cooperation especially in payment of electricity bills. He said that electricity being one of the necessities it was also important to pay bills on time.

Ayemi asserted that the aim and priority of the state government was to bring social and economic development all over the state by carrying out various developmental works such as power systems in the state. He said the objective of the government was also to reach out to those who have remained socially, economically and educationally backwards for several decades. He expressed the view that since electricity was connected directly or indirectly with all other activities, the socio-economic conditions of the people would also improve considerably with the upgradation of sub-station at Nagarjan.

He also lauded the power department for its tremendous effort in enabling the government to fulfil the vision of providing uninterrupted power supply all over Nagaland. He was confident that the department would continue to perform their duties with more added vigour and work towards bringing 24/7 power supply.

Further, the advisor expressed hope that the department would improve the overall maintenance of power system in the state and display exemplary discipline and earn the admiration and support of the people.

Also, speaking at the programme, principal secretary (power) Er KD Vizo said that the domestic consumption of power constituted about 85 percent of the total consumption, but the trend over the ten years has shown an increase of 7-10% in the normal annually. By 2021, Vizo said the power demand of 200 MW was expected from the industrial initiatives in the State. He, therefore, said that by 2021 the state power demand would touch 450MW. 

Vizo maintained that the present installed generation capacity of the State from small hydro projects was 26.74 MW, adding that the bulk of the state power requirement was being purchased from Central PSU generating units operating in the North East and Eastern region. 

However, he said that currently there was shortfall of Hydro power generation in eastern region and due to which the department was rationing the supply of electricity throughout the State on a rotational basis. He said there was now tremendous pressure to have state’s own Hydro power generation stations.

Further, Vizo appealed to the general public to extend co-operation in places where hydro power stations were coming up. He also pointed that in particular Dimapur district was consuming about 50% of the power consumption in the State and revenue leakage was also maximum in the area. 

Therefore, he appeal to all colony leaders, GBs and citizens to help the department of power to check excessive power theft in Dimapur district. He also urged the citizens to learn how to conserve energy and reduce unnecessary usage.

Giving a brief technical report, engineer in-chief power, Er Shikato Sema said that since there had been no augmentation/up-gradation for about two decades at 132/66/33W sub-station Nagarjan, the equipments such as switchgear and protective system had outlived its useful life causing a lot of disturbances in the power system prolonging power failures.

In 2002, Sema said the department took up system improvement scheme (SIS) in Dimapur funded by DoNER under NLCPR. He said that the scheme partial capacity addition of another 20MVA (making it 60MVA) and replacement of aged switchgears and protection system was implemented.

Upon completion of those works, engineer-in-chief said the demand grew so rapidly in no time that it outgrew its capacity of 60MVA to almost 80MVA. 

Anticipating an additional load growth of about 70 MVA taking the total demand to 150 MVA, Sema said the department proposed to upgrade the existing sub-station to 200MVA during the 11th Five Year Plan for which the department submitted DPR costing Rs. 34.2 crores. 

DoNER sanctioned only Rs. 17.05 crore. With that amount, he said the department could install only one 100MVA, 132/66kV Transformer in March 2015 which provided some relief for some time.

However, as anticipated, he said with the rapid load growth the transformer also got fully loaded within no time. 

Further, at the voltage level of 66/33kV, he said that three 20MVA transformers got overloaded and unfortunately, one 20MVA transformer got damaged on November 12, 2017 due to overloading.

To mitigate the power crisis, he said the state government sanctioned an amount of Rs. 14.96 crore in December 2017 from State Resources and the installation of 100MVA, 132/33kV transformer was completed within 12 months time from the date of sanction. 

He informed that technically the transformer had been in operation since the time of installation, but formal inauguration could not be done in time. 

He pointed that at present the department had 100MVA at the voltage levels of 132/66kV and another 100MVA at the voltage levels of 132/33kV. However, he cautioned that in the event of any outages of one of the 100MVA transformers, there would deep power crisis. 

The engineer-in-chief, therefore, has stressed the need to have an intermediate transformer of at least 80MVA capacity of 66/33kV for either stepping down or stepping up as the situation demands to avoid serious blackouts.


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