▶ Linear OLTC (On Load Tap Changer) does “Real-time voltage adjustment”

• Covers intelligent transformer / transmission and distribution (factories, and buildings) and distributed power (solar, wind, and small hydro) transformer system.
• Real-time voltage adjustment results power quality improvement, efficiency improvement,loss reduction, energy saving, CO2 reduction, and green growth contribution.

• Intelligent transformer
• Intelligent voltage regulator
• Smart transformer
• Distributed power (solar, wind, and small hydro, etc.) transformer

• Factory, building, and plant, etc.
• Power authorities(domestic, and international)
• Distributed power system(solar, wind, and small hydro, etc.)
• Efficiency improvement, loss reduction, energy saving, and ESCO business.

• Real-time voltage regulation / power system stability / power quality improvement
• Reduction of defect rate / improvement of productivity / maximization of corporate profits
• High efficiency of power system / High efficiency of load facilities / Extension of load equipment’s life
• Loss reduction / Error reduction / Maintenance cost reduction / Electricity bill reduction
• Energy saving / Carbon dioxide (CO2) reduction / Contribution to green growth

"Real-time voltage regulation" under load improves and resolves many problems of traditional passive transformers.
We have developed "linear OLTC (On Load Tap Changer)" technology to implement the voltage regulation.
By applying the technology into individual sectors, intelligent transformer, smart transformer, smart voltage regulator,
and distributed power (solar, wind, and small hydro) transformer were developed.

All other transformers except the power transformers installed in the substation are passive transformers, which cannot adjust the voltage at all under load, and if you still have to adjust the voltage, you must adjust the tap of the manual transformer after a power failure. But you cannot power out frequently, so once a transformer is installed, there is a serious problem of not being able to adjust the voltage at all.

To solve this problem, we have developed a linear OLTC (On Load Tap Changer) that enables real-time voltage adjustment under load. Through this, real-time voltage adjustment becomes possible in any case, and the efficiency is improved and losses are reduced by voltage stability according to real-time voltage adjustment, which greatly contributes to energy saving, CO2 reduction, and green growth.

Electricity is supplied from a power plant through substations to the receiving premises like factories, and buildings. As a result of traversing a long distance through the wire, losses occur due to the resistance of the wire. And the voltage drops due to the loss, and it becomes more unstable under the influence of the load.

When unstable voltage is applied to the transformer, the conventional passive transformer cannot handle it at all. In a passive transformer, when unstable voltage is applied, the output voltage is bound to be unstable, and all loads are forced to be used in an unstable state, which reduces efficiency and increases losses.

If the voltage is unstable, even if the voltage is low, the efficiency will decrease and the loss will increase, and if the voltage is high, it will be a bigger problem. It's like high blood pressure and low blood pressure repeating over and over again, and a car speeding up and slowing down over and over again. Therefore, the voltage is always the least lossy and highly efficient when it is used at a “stably rated voltage”.

If the voltage drops by 5%, the loss increases to about 9.75%.
This is because when the voltage drops, the current rises and the loss occurs in proportion to the square of the current that has risen.

In order to solve the voltage instability problem, when "intelligent transformers, smart transformers, and smart voltage regulators" capable of "real-time voltage adjustment", are used, the voltage is stabilized, the efficiency is improved, the loss is reduced, and the power bill is reduced.

Conventional power devices have one simple function. It cannot react to fluctuations of input voltage. With OLT Power’s innovative technology of "intelligent transformer, and smart transformer", power transformers can react to the real world of voltage fluctuations and makes many voltage-related issues to go away.