scholarly journals Investigation of Ways to Reduce the Inrush Current when Starting High-Voltage Motors

The operation of high-power industrial electrical installations, particularly in metallurgy and the oil and gas industry, is associated with complex technological processes that require increased attention to the equipment used, as such equipment is used in complex and dangerous production conditions and in continuous operation facilities. High-voltage air and gas compressors are objects with increased electrical energy consumption and have significant starting currents. These circumstances affect both the shape of the supply voltage and the state of the energy system in general. Currently, the development of methods for limiting inrush currents is an urgent task for objects used in industrial enterprises. Introducing a compressor into the technological process is sometimes requires prior coordination of its start with the equipment in operation, especially that with a high power consumption. The paper studies the existing control system as well as ways to upgrade the system to improve its energy performance.

2020 ◽  
Vol 60 (2) ◽  
pp. 548
Author(s):  
Gavin Thompson

How will the global energy system move sharply towards a pathway compatible with the goals of the Paris Agreement by 2030? Despite great efforts on cost reductions in renewables, alternative technologies, advanced transportation and supportive government policies, progress to date is not enough. The challenge is now one of scalability. Although some technologies required for a 2°C future are economic and proven, many others are not. Optimists look at the cost of solar and wind and say we have all we need to achieve our targets. The reality is that significant additional investment is needed to get them to material scale, globally. And too often huge challenges are downplayed in sectors beyond power and transport, including industry, aviation, shipping, heating and agriculture. Given the criticality of climate change, these multiple challenges must now be addressed. Consequently, any accelerated pace of decarbonisation represents an existential challenge to the oil and gas industry, including in Australia. If companies are to remain investible through the long term, all will need to transition to business models that are aligned with the goals of the Paris Agreement. This paper considers what the path to decarbonisation could look like and how oil and gas companies must respond in order to prosper through the energy transition.


Author(s):  
Dinora Ishmanova

In recent years, the oil and gas industry of Uzbekistan has been developing very fast, and oil and gas production has grown significantly. Uzbekistan achieved oil independence. Natural gas fields in the Republic are being exported to foreign countries as well as satisfying the needs of all types of industrial enterprises and population. Growth of oil and gas extraction is achieved by opening up of new oil and gas constructions and fields, increasing the efficiency of mining operations, and applying new methods of increasing the level of resource utilization. Determining the ultimate goal of socio-economic transformations in our country is the starting point of the current reform strategy. At the same time, the focus is on ensuring the dynamic development of the fuel and energy complex, increasing oil and gas extraction and processing, and gaining energy independence of the republic. LUKOIL is one of the world's largest vertically -Integrated companies engaged in the extraction and processing of oil and gas, manufacturing of petroleum products and petrochemicals. The main areas of its activity, the Company holds a leading position in the Russian and global markets.


Author(s):  
Christopher Boachie

The energy system studies include a wide range of issues from short term to long term horizons. The decision making chain is fed by input parameters which are usually subject to uncertainties. The art of dealing with uncertainties has been developed in various directions and has recently become a focal point of interest. Decision making is certainly the most important task of Oil and Gas managers and it is often a very difficult one. The purpose of this chapter is to review and investigate the decision making processes under risk and uncertainty of Oil and Gas companies. Questionnaires were distributed to eight Oil and Gas companies in Ghana to solicit their view on decision making under risk and uncertainty. Results indicate that most managers use Maximax, Minimax Regret and Expected Value when making decisions under risk and uncertainty.


Author(s):  
Eliazar Elisha Audu

Pumps are critical infrastructure in the Oil and Gas industry, and have been widely used in pipeline transportations of petroleum products. The electrical energy needed by a pump to meet the minimum pipeline operational requirement plays an important role in the overall cost and evaluation of pumping systems performance, which has become an important issue in pump energy management and pump station designs. This paper provides a quantitative and analytical method using Bernoulli’s equation for studying energy dependence between two pumps (Booster and Mainline pumps) in series within a pump station as a function of pump’s head, flow-rate, and density. Using actual parameters from a pump station, the derived equations are validated on four different products. The densities of products are 1000 kg/cm3, 835 kg/cm3, 800 kg/cm3 and 660 kg/cm3 for Water, Automotive Gas Oil (AGO), Dual Purpose Kerosene (DPK), and Premium Motor Spirit (PMS) respectively. The results show that the energy requirement of the Booster pump is determined by the energy demand of the Mainline pump as a function of flowrate, density and pump’s head. The study is essential for developing energy saving strategy in pipeline operations and in electrical consideration when selecting the right electric motors for pumps in pump station design.


2021 ◽  
Vol 73 (03) ◽  
pp. 10-11
Author(s):  
Francois Laborie

I was recently asked if I thought that the oil and gas industry would bounce back once the world is rid of the coronavirus. It was a question prompted by the sharp decline in activity in several oil-and-gas-dependent sectors such as transportation. The coronavirus and its subsequent impact on the price of oil have injected a sense of uncertainty into the industry, prompting many to speculate as to what will happen once the pandemic abates. Rather than asking if we’ll bounce back, I’d prefer we focus on how fast we can learn from the challenges and move forward. The oil and gas industry has come to a point at which there is no turning back. The pressure to transform was mounting long before COVID-19 entered our vocabulary. Recent events only highlight the urgency of it. It is an urgency that stems from new regulation, increasing financial pressure, and growing societal expectations. From the Paris Agreement to the UN’s Sustainable Development Goals, the world has come to terms with the fact that our planet is not immune to human impact and that we need to take measures to mitigate our damage to it. For oil and gas, that means transformation, in both the short and long term, all the while remaining profitable and competitive. In the shorter term, the world is not able to fill the void that going completely fossil-free would create. Oil and gas are still key components of the global energy system, driving both social and economic development in much of the world. That means that while our dependency remains, the extraction of this natural resource and its subsequent processing need to be done as safely, efficiently, and as carbon-friendly as possible. That’s where technology stands to play a pivotal role. For oil and gas operations, achieving near-term, sustainable success will require three things. Optimizing the use of data for increased transparency. There are savings to be had across oil and gas operations. In 2017, global management consultant McKinsey & Company reported that the industry’s performance gap was around $200 billion and that most offshore platforms are only running at 77% of their maximum potential. This means that there is significant ground to be gained. Today, we have the tools available to capture this value, to extract the data, and identify where there is waste and where there is opportunity. This kind of accountability is possible only if you are transparent with your data, which requires the right tools to uncover it, understand it, and share it. Several oil and gas players today have already cracked the code to learn how to use data to ensure more sustainable operations. By gaining an understanding of the inherent power of data flowing through their operations and by embracing transparency around that data, they can harness it to their advantage. Norway-based oil and gas operator Aker BP is one such example. Working with Cognite, it recently implemented machine learning to improve water- contamination detection, saving $6 million per year and reducing the company’s environmental impact. The massive savings for both the companies and the environment was achieved with the smarter and more open use of data.


2021 ◽  
Vol 1 (53) ◽  
pp. 43-50
Author(s):  
L. Mazurenko ◽  
◽  
O. Dzura ◽  
Ye. Shumskyi ◽  
◽  
...  

Purpose. The development of theory and research of autonomous DC power systems based on contactless electrical machines is an important element in ensuring the improvement of the reliability and energy efficiency of autonomous power supply of remote from centralized networks facilities, ship equipment, critical to power outages consumers. Originality. The use of induction generators with squirrel-cage rotor and an electronic converter in stator circuits in the design of autonomous DC power systems is advisable due to presence of a DC power output in these generators and the possibility of stabilizing the output voltage at variable speed. One of the scientific issues needed to be solved at creating induction generators-based DC power systems with inverter-assisted self-excitation of the generators is the determination of means and as well as development and verification of algorithms for regulating the generators load. Solving this issue requires the creation of appropriate simulation models. Methodology. In this work, a simulation dynamic model of an autonomous DC power system with two parallel operated induction generators with inverterassisted self-excitation and the six-step switching control algorithm has been developed. Results. A study of quasisteady-state and dynamic operating modes of the system was carried out. The duration of the initial excitation of the generators was determined for different values of the capacitance of the filter. Practical value. The results obtained showed the compliance of the parameters of electrical energy in the system with the standards established by the relevant regulatory documents and stable operation of the system with load changing from idle to rated. Further work is planned to focus on improving control algorithms for autonomous DC power systems with parallel operating induction generators and inverter-assisted self-excitation, studying the energy performance of such systems and developing recommendations for their design.


2018 ◽  
Vol 58 (2) ◽  
pp. 493
Author(s):  
Joachim Bamberger ◽  
Ti-Chiun Chang ◽  
Brian Mason ◽  
Amer Mesanovic ◽  
Ulrich Münz ◽  
...  

As our energy systems evolve with the adoption of more variable renewable energy resources, so will our oil and gas industry play a pivotal role in what is expected to be a lengthy transitional phase to a greater mix of renewables with a reliance on fast, reliable gas peaking power generation, which have lower greenhouse gas emissions, and short delivery periods to construct. Oil and gas companies are also rapidly moving towards becoming integrated energy companies supplying a mix of gas, oil, photovoltaic power, wind power and hydrogen, coupling these into the electrical and gas grids. We discuss some of the components and tasks of a distributed energy system in its various system guises that contribute to a more cost effective, reliable and resilient energy system with lower greenhouse gas emissions. We discuss the role that hydrogen will play in the future as oil and gas companies explore alternatives to fossil fuels to address their need to reduce their carbon footprint, substituting or supplementing their conventional gas supply with renewably produced hydrogen. We talk about how Australia with its excellent renewable resources and the opportunity to potentially develop a new industry around the production of renewable fuels, power-to-X, such as hydrogen, with the potential for the oil and gas industry to leverage its existing assets (i.e. gas pipelines) and future embedded renewable assets to produce hydrogen through electrolysis with the intention of supplementing their liquefied natural gas exports with a portion of renewably produced hydrogen.


2021 ◽  
Vol 2 (2) ◽  
pp. 136-163
Author(s):  
Mohammad Hazrati

The importance of assessing energy industries through a justice framework has widely become recognised in recent years. Creating and using the energy justice framework by different scholars is a manifestation of this recognition. Much of the scholars' attention is, however, currently being applied to the energy justice framework on the renewable energy industry and attempting to design a ‘perfect’ and ‘just’ energy system. This author believes, as set out in this article, that a theory of justice must address and reduce injustices in any circumstances, rather than aiming only at the characterisation of so-called ‘perfect justice’. Over-emphasising on a zero-carbon future and overlooking the present reality means that we accept many other injustices that are associated with fossil fuels until the time when we can dispose of fossil fuels, which are ‘future-uncertainty’. In this article, the author, by analysing current data and information regarding the production of oil and gas and its consumption and reserves, as well as different scenarios towards the future of energy, argues that the dominant position of fossil fuels is not going to change anytime soon. Based on this reality, and recognising what are considered to be some inherently unjust features of the oil and gas industry, the author proposes three complementary stages for justice in the oil and gas industry; a perfect and just energy system that has zero-carbon and is decentralised is the final stage. The second stage is fair energy transitions, which emphasises a ‘just transition’ towards that desired future. The first stage, however, which is often overlooked, is applying the energy justice framework in the oil and gas industry to identify any injustices that can be reduced or limited.


2021 ◽  
Author(s):  
Sameeh Batarseh ◽  
Saad Mutairi ◽  
Damian San Roman Alerigi ◽  
Abdullah Al Harith

Abstract The objective of this work is to provide an overview of high power laser program since it is inception and to provide the strategy to make it reality. An overview of the past two decades, current and future plan to deploy the technology in the field. Laser attracted the oil and gas industry as an innovative non-damaging technology and alternatives to current practices. The lab success conducted over the past 20 years performing experiments on thousands of representative rock samples proved the key parameter for successful laser operation in the field. The technology is not only a non-damaging but also improves flow properties and communication between the wellbore and the hydrocarbon bearing formation. For the past two decades, researchers attempted to deploy high power laser technology for several downhole applications due to its unique properties such as accuracy, precision, and power. The power of the earlier laser generation was insufficient to penetrate subsurface formations. Recent advancement in the high power laser technology generates new and evolved systems that are more compact, efficient, and cost effective for downhole applications. Thousands of rocks have been exposed to high power lasers radiations for several downhole applications such as perforation, drilling and heating. The success of the technology demonstrated that in all rock types, the flow properties were enhanced regardless of their compressive strength and hardness. Laser also has unique futures such as the precision in controlling and orienting the energy in any direction regardless of the reservoir stress orientation and magnitude. The beam is generated at the surface and delivered downhole via fiber optics cable, it can be targeted directly to the pay zone to enable production from challenging zones that cannot and could not be achieved with current technology. The technology provides small footprint and environmentally friendly technology, it provides waterless technology as an alternative to water base fracturing technology.


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