ABSTRACT A power system is set up basically to meet the demands of the customers. However, interruptions which are largely unavoidable contribute to the unavailability of power and thus prevent power system from achieving this. In most cases, it is the sustained interruptions that greatly affect both the utility company and its customers. Hence, it is necessary to find means of determining which component failure contributes most to the unavailability of the distribution system, and how t...
Abstract Covenant University aspires to be one of the ten leading university in the world by 2022. To achieve this noble goal, the university has set in motion various strategies, some of which are to improve the learning process of students, empowerment of faculty and staff in gaining skills in teaching methodologies and the use of e-learning/new technologies. The university has currently invested a lot of funds in the acquisition of relevant and contemporary e-learning technologies, such a...
ABSTRACT Oil Industry has become the most important part of Sudan Economy and is playing the main role for country incomes. White Nile Petroleum Operating Company (WNPOC) is one of the Oil Operating Companies which has been producing crude oil since 2006; one of its running fields is Mala fields which comprise the following sub fields: • Mala Main, • Mala North, • Mala East and • Mala South East. When these fields were commissioned and started-up, there appeared continuous power out...
Abstract Conventional methods of system load shedding are too slow and do not effectively calculate the correct amount of load to be shed. This results in either excessive or insufficient load reduction. In recent years, load shedding systems have been repackaged using conventional underfrequency relay and/or breaker interlocks schemes integrated with Programmable Logic Controllers to give a new look to an antiquated load preservation methodology. A truly modern and intelligent load shedding...
ABSTRACT Power quality is a global issue due to electronic equipment becoming the backbone of the modernday economy; it affects consumers, distribution, and transmission networks. This research work focuses on evaluating and proposing improvement of the measured power quality on the distribution network in Covenant University. Electrical equipment used in Covenant University can lead to power quality problems, measurements and evaluations are to be done from time to time to monitor the distr...
ABSTRACT Power system voltage instability often results in voltage collapse and/or system blackout which is a source of concern for power network operators and consumers. This work proposes a new line stability index that is suitable for investigating the voltage stability condition of Power System Networks (PSNs). This index, which is called the New Line Stability Index-1 (NLSI_1), is derived from first principles and shown to incorporate the Line Stability Index (Lmn) and the Fast Voltage ...
Abstract This research is focus on the adjusting of a DC motor speed, predicts and expects the next values of errors that happen and appear from the difference between the actual speed and the desire speed.As known DC motor speed is hard to stabilize and adjusting in precise way, here we dealing with and use many techniques (PWM, PID controller and grey prediction) in order to reach and achieve suitable resultsfor speed and error. The main goal of this research is to introduce the grey predi...
ABSTRACT A Printed Circuit Board (PCB) Mill is a device that etches out a pattern on a copper clad board such that it makes a PCB. PCBs are used everywhere in the field of electrical engineering to connect electrical components to one another. This research presents the design and implementation of low-cost mini PCB commuter numerical control machine based on microcontroller. A stepper motors were used to compile the movement of the three axes coordinates. Moreover, the generated Gerber file...
In this thesis, assessment and upgrading of SCADA system in Petroleum pipelines is proposed, the Pipeline of Petro energy Company (Sudan branch) was considering as a case study to show the advantage of SCADA system in Petroleum pipelines and how can Achieve steady state operation. The Pipeline Control System uses SCADA to provide information to the operator in the control centre. SCADA systems displays the data transmitted from all the sensors on the pipeline and pump stations to the v...
Most variable speed wind turbines have pitch angle control mechanisms and one of their objectives is to extract maximum power from available wind speed. By adjusting pitch angles of wind turbine. In this research the use of pitch angle control for wind turbine equipped with self-exited induction generators (SEIGs) and power electronic converters is presented. To extract the maximum available power from the wind, the wind turbine is controlled using pitch angle control based on power sign...
A wireless sensor network is composed of a large number of sensor nodes and a sink. In the wireless sensor networks the main problem is limited battery life used by sensor nodes and the mobility of the sink nodes in the network. To avoid this problem, protocols with mobile sinks were proposed. They helped in achieving load balancing and uniform energy consumption throughout the network. This research aimed to concentrate on the dynamic requirements of the mobile sink by providing an ove...
ABSTRACT The use of fossil fuel in electricity generation has created three significant issues for the world to deal with. The issues are security (availability and reliability) of supply, climate change and the cost of fuel required for electricity generation. Covenant University, currently running a cluster of stand-alone diesel powered generating plants situated at different locations within the campus has a lot of unused available capacity within the system which invariably increases the...
ABSTRACT A power system is set up basically to meet the demands of the customers. However, interruptions which are largely unavoidable contribute to the unavailability of power and thus prevent power system from achieving this. In most cases, it is the sustained interruptions that greatly affect both the utility company and its customers. Hence, it is necessary to find means of determining which component failure contributes most to the unavailability of the distribution system, and how this...
Abstract Most variable speed wind turbines have pitch angle control mechanisms and one of their objectives is to extract maximum power from available wind speed, by adjusting pitch angles of wind turbine. In this research, the use of pitch angle control using PI controller is presented for wind turbines equipped for a three turbines with self-exited induction generators (SEIGs). The converters are used to extract the maximum available power from the wind. All machines are connected to a dc b...
Abstract Modern power systems networks consist of a number of utilities interconnected together. Power is exchanged between utilities over tie-lines by which they are connected. Automatic generation control (AGC) plays a very important role in power system. Its main role is to maintain the system frequency and tie-line flow at their scheduled values during normal period and also when the system is subjected to small step load perturbations. The most commonly used controller is the PID contro...