The Electricity Company of Ghana (ECG) has installed a new outdoor 132 MVA substation at the Tema Industrial Area to boost power supply to its customers in the region.

Dubbed the Smelter II, the facility is the first outdoor substation in the Tema region and has cost the power utility $2.2 million, the Chronicle reported.

It is reported that at present there are three substations in the region, the first, which is indoors, is at Tema, followed by another indoor at Kpong, and this new one.

During a tour around the facility, Tema Regional engineer of ECG, Mr. Wiafe said: “This does not mean there will be no more power outages, because power outages are caused by many factors, which means that the capacity could be there, but the network can develop a fault.”

He added: “This substation is purposely to increase reliability, that is, to make sure that the power is there. If the industries are not working, then it means everybody, domestically, would get power. It is linked up with two transformers with 66 MVA each from GRIDCo.”

How the outdoor substation functions

Wiafe continued: “The system is such that there are four main lines coming from GRIDCo, and even if three of them are off, one will still be working, and the probability that three of them will go off is very small. So, you can see that the reliability is high.”

“We have five lines that are expected to go out, three will be going to the industrial area and two to Dawenya, Affordable, Community 25, and can go as far as Morbole through Ashaiman and return to this station. It’s a ring,” he said.

He added: “And the other one, from here will go to the Affordable, Community 25 and Dawenya, and go as far as to Ada, and from here it can go through our industrial feeders to our station at A, and go as far as to Nungua, depending on the available load at the time. In effect, the facility is to enhance our network and make it more flexible and easier for all of us.”

Wiafe explained on why they decided to acquire an outdoor substation, underlining that both the outdoor and indoor have their advantages and disadvantages. Read more…

Media quoted him stating that with the indoor substation, when there is a fault they have to dig before they can identify it, but with the outdoor, at a glance, they can see and identify it.

“If there is a hot spot and you come in the night, all you have to do is use the infrared camera, and you can identify the fault and work on it. But, with the indoor ones, you will not see any such thing.”


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