The Transmission Company of Nigeria (TCN) said the collapse of the
National Grid on May 8, at 2:32p.m. was caused by a multiple tripping on
its substation in Onitsha, Anambra.
Electricity power line |
The Managing Director of TCN, Mr Mohammed Usman, made the disclosure at a news conference in Abuja on Friday.
The national electricity grid had on Wednesday, experienced some
disturbances resulting in reduction of electricity allocation to
electricity distribution companies in the country.
Mohammed also said that the collapse may also have been triggered because one of the generators went off.
“What happened a day before yesterday at 14;32 hours was a case of system collapse, we had tripping.
“The reason for the grid collapse was that there was a multiple
tripping around Onitsha substation. We are also suspecting that one of
the generators went out.
“We have sent our team of engineers to go and investigate, we normally investigate this kind of disturbances,’’ he said.
He however, said that in spite of the fragile nature of the nation’s
power grid, TCN had achieved some level of stability on the national
grid.
“Although, we have achieved some level of stability on the grid
through the massive investment that we have done in the last two years.
“It does not mean that our grid has become disturbance free, because
our grid is still very fragile. It is a journey that we are in that will
take us to have a modern and stabilised grid.
“You remember, I had told you that we need to achieve four important things to have a stabilised grid.
“ We need to have critical investment in lines and substations so
that we put N-1 across the country, that will ensure that any equipment
that goes out at any point in time will not affect supply on that area.
“For example, what happened in Apo recently, where we had a
transformer that got burnt, we restored supply in two hours, because we
had N-1 in that substation and that is what we are trying to achieve in the country,” he said.
He said the company had raised 1.6 billion dollars for investment in
lines and transmissions saying that attainment of the required
investments in transmission would take some time.
“It is not what we will do in one day; the investment project for
northern corridor transmission project, we just advertised; the one for
Abuja, transmission project, we just signed, the one for Lagos and Ogun
transmission project, we are about to launch the procurement process.
“The one for World Bank, we just launched the project, but the equipment has not arrived, so we are on a journey,’’ he said.
Mohammed said that there was urgent need to have a functional SCADA
in the power sector to monitor activities on the national grid.
“If we have a functional SCADA, it will show clearly what happened on
the grid, and that is why we in TCN, deployment of SCADA is not an
option, we have to deploy it.
“Because for us to have modern grid you need to have a functional SCADA,’’ he said.
He said there was also urgent need to have a commensurate investment
on the distribution chain to ensure a stable grid in the country.
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