Decision Support Tool for Electric Power Generation Development: A Feasibility Analysis for a Nigerian Case

Electricity is a crucial component of sustainable development in developing countries, providing opportunities to supply low-cost clean energy to their populations. This paper presents a decision support tool for the Nigerian case, allowing users to rank different enhancement options to meet future scenarios. The tool enables feasibility checks on infrastructure capacity and can handle various generation options, including low-cost renewable resources. It is easy to use for non-experts and decision-makers and incorporates an optimal power flow algorithm to minimize costs. Demonstrated on a modified IEEE 30-bus system informed by Nigerian scenarios, this tool can provide policymakers with valuable insights for long-term investment decisions and facilitate the delivery of low-cost, clean energy to developing countries

Contribution on Improving Power Resilience in the Healthcare Facility

Focused on predicting and preventing electrical failures, this paper presents methodologies to those responsible for managing the electrical supplies in Healthcare and other similar environments. Particular attention has been directed to developing ways of exploiting the known relationships between thermal and electrical engineering disciplines as a means of monitoring and informing a timely intervention. There are two major studies presented in this paper which contrIbute resilience in specific areas of Healtcare Facility. The first study is focusing on thermography, it is enhanced with an application of the finite difference method for modelling thermal performance under adverse conditions has been analysed.This method could provide a more robust solution for appraising new and existing installations. A second study was carried out to examine the use of weather forecast-based electrical site load predictions as a possible precursor to automated load shed control which found a reliable correlation between a site’s peak electrical load and the peak outside air temperature. the use of weather forecast-based electrical site load will help reducing unnecessary tripping of the power supply and this increase resilience

Investigation of the impact of unbalanced and non-sinusoidal supply voltages on converters

In this paper two input current modulation strategies for matrix converters are experimentally analyzed under two different supply conditions: sinusoidal unbalanced voltages and non-sinusoidal balanced voltages. Both strategies use the Space Vector Modulation (SVM) technique in order to control the matrix converter accordingly to the input and output constraints. Strategy A modulates the input currents keeping the corresponding space vector in phase with the input voltage vector. Strategy B operates in order to keep the input current vector in phase with the positive sequence fundamental component of the input voltage vector. A comparison between the two strategies is made in terms of reduction of the input current disturbances due to unbalanced and non sinusoidal voltage on the grid. It is found that a dynamic current modulation strategy, independent of the voltage disturbances such as Strategy B, is more effective for the reduction of the RMS value of input current disturbances. The validity of the theoretical investigation i.e. the effectiveness of the current modulation strategy conforms to experimental tests result carried out on a matrix converter prototype

An Analytical Approach in Calculation of the inductance of Single Phase Asynchronous Motor

In optimizing design of the iron core, it is essential to know the magnetic field of the coil outside the core to get the leakage inductance, because the leakage inductance in this area usually provides high contribution to the flux density in the iron core. In this paper, an analytical solution as an alternative to three-dimensional FEM (finite element method) to calculate the field outside the iron core by solving analytical equation using MathCAD is presented. The analytical method provides results that are close to result given by three-dimensional FEM, but with the great advantage of dramatically reduced computing time

A Critical Review of Nigerian Electricity Policies between 2001 and 2020

Like many developing nations, Nigeria has experienced prolonged electricity supply shortages for decades. As a result, the government has implemented several policies and reforms to tackle the issue, including privatisation, unbundling, and tariff adjustments. This paper critically reviews Nigeria's electricity policies, highlighting its strengths and weaknesses. The study adopts a mixed-method approach, combining a review of relevant literature, official documents, and interviews with experts in the field. The findings suggest that while some policies have had positive impacts, others have failed to address critical challenges in the sector. Although progress has been made in improving electricity access and supply, much remains to ensure a sustainable and reliable electricity supply in Nigeria. The paper concludes by highlighting some key policy recommendations that could help overcome the sector's challenges

Theoretical Analysis of the Power Generation of Pumping Cycle Kite Power Systems Compared to Traditional Wind Turbines in Aberdeen

The United Kingdom (UK) has pledged to reduce its greenhouse-gas emissions to Net Zero by 2050. However, in July 2022, the High Court ruled that the government’s net zero strategy failed to outline policies that would enable it to meet the target. As a result, the government published a new plan that sets out opportunities for innovative technologies like Floating Offshore Wind Manufacturing, and hydrogen, which will not only help us reach net zero. For wind, the government's goal is to develop up to 50 GW of offshore wind by 2030. The challenge of such an expansion is huge. It means the United Kingdom will need to install an estimated 3,200 new, and much larger, wind turbines by 2030—roughly three new turbines every 2 days. Airborne Wind Energy (AWE) systems are part of a new class of wind energy converters that is receiving considerable attention in the renewable energy generation arena. AWE systems benefit from the steadier and stronger wind streams at high altitudes to generate more energy from wind while avoiding the expense of tower construction. This paper presents a feasibility study of using AWE systems in the UK and particularly in the City of Aberdeen to generate renewable energy. The characteristics of wind energy distributions were theoretically investigated by developing a wind speed distribution model, and then the annual power production of a kite system and a turbine system with 30 kW generator were analysed by applying the annual wind profile in Aberdeen to the performance models of these two systems. It was found that the annual power production of the kite system was two times higher than that of a normal turbine system

Comparison of the Yearly Power Generation of a Pumping Cycle Kite Power System and a Traditional Wind Turbine in Aberdeen Scotland UK

In the UK, the Climate Change Act (2008) set a target for reduction of 80% of carbon emissions by 2050. Total power generation in the UK from renewable resources was 110 TWh in 2018. Of this, 56.9 TWh was wind-generated. The UK is located in a windy area and is one of the top locations in the world for wind power, often considered to be the best in Europe. Scotland is the most suitable location for the implementation of Airborne Wind Energy (AWE) systems in the UK. Over the last three decades, the number of wind farms has increased greatly. Wind turbines extract wind energy from 100 m above the ground. AWE systems enable the extraction of more energy from wind at elevated altitudes beyond 150 m. A pumping cycle kite power (shorted as kite) system is the most popular AWE. In this work, the annual power production of a kite system and a turbine system with a 30 kW generator were analysed by applying the annual wind profile in Aberdeen to the performance models of these two systems. The annual power production of the kite system was found to be two times higher than the turbine system