Rezi Delfianti

• Phd
• Lecturer at Airlangga University

The global demand for energy is increasing, driving a transition towards renewable energy sources. Additionally, the efficient utilization of waste heat has become a crucial focus in energy management. In household and restaurant kitchens, the cooking process generates hot air, which is expelled through ducting systems. However, this ducting often...

The increasing global energy demand and the shift towards renewable energy sources underscore the importance of utilizing wasted energy. Thermoelectric technology presents a viable solution by converting this wasted thermal energy into alternative electrical power. Consequently, thermoelectric applications have been extensively researched and explo...

A short circuit is an electrical fault that occurs due to two conductors in contact, which causes the resistance to be minimal, resulting in a substantial electric current. There are cases of interference that cannot be avoided. This disorder is called the arc of fire series. If the arc of fire continues continuously, heat will arise, which can dam...

The tropical climate provides room for optimizing solar energy. However, the ability in functionality is not optimal because the existing photovoltaic has not been investigated how much energy is produced. This research provides precise daily predictions for the sustainability of Photovoltaic energy. The resulting photovoltaic energy will undergo a...

In modern power systems, renewable-based power plant such as wind power system is integrated significantly. Among numerous types of wind power systems doubly fed induction generators (DFIG) is becoming favorable in the last few years. However, adding a wind power plant could give a new challenge to the power system, especially in frequency stabilit...

This research investigates short-circuit problems in induction motor stators by constructing a motor with a changing winding and leaking flux data. The data is used to evaluate X, Y, and Z axes and map motor waves under normal and abnormal conditions. This study is expected to compare the effectiveness of the observation method from three different...

Indonesia's geographical condition, as a maritime country, has a wealth of natural resources in the form of water, which has the potential to support the economy in the aquaculture sector. One of them is the cultivation of freshwater fish ponds as has been carried out by the Maju Rukun Community Group (PokMas) in Ngerong Village, Pasuruan. Lack of...

Renewable energy is clean energy that cannot harm the environment in its way, especially on standalone photovoltaic electricity generation. The only problem with renewable energy electricity generation is the intermittency and its instability in power quality and power efficiency. Power system stability in renewable energy is essential during the r...

The goal of this paper was to create an adaptive virtual inertia controller (VIC) for superconducting magnetic energy storage (SMES). An adaptive virtual inertia controller is designed using an extreme learning machine (ELM). The test system is a 25-bus interconnected Java Indonesian power grid. Time domain simulation is used to evaluate the effect...

One obstacle to the energy industry’s tendency toward adopting renewable energy is the requirement for a monitoring system for energy transactions based on microgrids in the wheeling scheme (shared use of utility networks). The quantity of transaction expenses for each operational generator is not monitored in any case. In this project, a mobile ph...

There are various types of fault that can occur in the distribution system network, so it is necessary to identify the location of the fault and isolate the fault in the area of the fault. The city of Surabaya is in preparation for the development of a smart city, so it is necessary to prepare a smart distribution system network system that can ide...

Distribution system reconfiguration has two main objectives, namely as optimization of network operations and as system recovery in case of disturbances. It is necessary to consider the reconfiguration process and the process of using Distributed Generation (DG) or microgrid as an additional supply to reduce the possibility of failure, loss of powe...

Unit commitment (UC) is the scheduling of power unit operating outages to meet electricity needs at a certain time with the aim of obtaining a total economical generating cost. Differences in the characteristics of each generating unit and limitations result in different scheduling combinations based on equations, and for this research, the renewab...

Power generator often rely on the stability and efficiency. For both active power and reactive power stability, it is needed a device that could control the power. In active power control, the output frequency must be controlled. Load frequency control has become a common solution for frequency control in hydraulic power generating units. The desig...

The purpose of this paper is to determine the control strategy of the renewable energy systems of hybrid solar panel power and wind turbines in maximizing voltage balance. The voltage control strategy needs to be designed, mainly when different load changes occur. If it is not done, it will affect the balance of power supplied to the load and usual...