Assessment of an Isolated Offshore Power Grid Based on the Power Hub Concept for Pre-Salt Oil and Gas Production

Abstract

Towards a future with more renewable energy, oil and gas (O&G) will still play a major role in the energy and mobility sectors. Therefore, scientists must also investigate ways to mitigate carbon emissions in O&G production. In this sense, a power hub with local generation can be employed in offshore production sites to allow the adoption of more efficient power generation technologies without the weight and space constraints that exist in usual Floating Production, Storage and Offloading (FPSO) platforms. This power hub can be connected to the FPSOs forming an isolated offshore power grid that requires further study. This work investigates stability issues of such offshore power networks. Simulations of a system composed by the power hub and three identical FPSO units were performed in PSCAD, and the stability of the system was validated according to the IEC 61892-1 standard. Results demonstrate that it is possible to operate such system with a stable and secure supply. The main contributions of this work are the electrical modeling of the power hub and of the resulting isolated offshore electrical grid, and a detailed discussion of the rising challenges and the required models for dynamic electrical studies.

A Review on Multi-Terminal High Voltage Direct Current Networks for Wind Power Integration

“…To achieve ambitious sustainable goals regarding electric power production, Europe aims to integrate high amounts of offshore wind power in the North Sea to England, France, Germany and Norway. Moreover, offshore O&G production units could receive electric power from the shore, lowering the emissions in their production, as O&G are still expected to play a major role in the energy transition [23][24][25]. In the South, the European grid could be interconnected to Northern Africa to integrate the production of high levels of solar power.…”

High Impedance Arc Fault Modelling in Offshore Oil Platform Power Grid

“…Ref. [14] proposes a fault detection index by using the correlation between the DC capacitor power and the line power of the system. The proposed method has significant characteristics such as fast fault detection speed, accurate differentiation of faulty and healthy transmission lines, coverage of high resistance arc faults, noise resistance, robustness to the system and signal condition, without any additional sensors and communication infrastructure.…”

Metodologia para despacho econômico de sistemas de energia offshore híbridos e isolados.

“…They can generate vast amounts of power and successfully handle changes in load demand. However, they have substantial capital and maintenance expenses, as well as significant greenhouse gas emissions [76,144,145,146]. 68 Chapter 2.…”

“…Hybrid power systems combine several energy sources, such as conventional generators, renewable energy sources, and ESSs, to offer OG platforms with reliable, effective, and environmentally friendly power solutions [146,179,180,181]. This section will go into hybrid power system design and control, as well as their economic and environmental implications.…”

“…Utilizing REin place of the conventional fossil fuels not only significantly reduces carbon emissions but may also result in long-term economic savings [187,189]. However, it is crucial to guarantee the reliability and security of an FPSO's power supply [146], especially when incorporating RE sources [190]. The unpredictable nature of many RE sources makes the adoption of modern power management systems and energy storage technologies essential for maintaining continuous operations [191,192].…”