Medium-voltage electric heating systems offer reduced installation cost and increasing efficiency for multimegawatt oil and gas heating applications compared with low-voltage systems. For offshore applications, the systems offer the added benefit of both space and weight reductions. The technology is based on the same principles as low-voltage electrical-resistance heating that has been used in industry for the past century, but reapplied for medium-voltage use.
Most industries use low-voltage systems, typically less than 1,000 V, for electric heating applications. These were practical for most applications through the 20th century. Now, however, many applications in heavy industries such as oil and gas, petrochemical, and chemical demand much higher power output. These applications require multimegawatt electric heating systems. At low voltages, such requirements lead to challenges with power distribution, process design, and costs.
A viable solution involves leveraging medium-voltage power. A safe and reliable technical design for metal-sheathed electric heating and power controls exists for heating systems operating at medium voltages. These medium-voltage electric heating systems allow the oil and gas industry to capture all the advantages of electric process heat while minimizing the disadvantages of low-voltage, high-amperage designs....
Flow-Assurance Methods Enabled by Medium-Voltage Heating Technology
10 October 2016