Implementation Of Energy Management Research Articles

Energy Management in the Nodes of Telecommunications Network Systems

Currently there is a significant increase in energy consumption, due to the use of electronic devices, at the same time the use of renewable energy has grown to reduce the impact of greenhouse gases. Therefore, the importance of implementing energy management in telecommunications networks to reduce costs and negative environmental impacts. So in this article we propose the implementation of an intelligent EMS architecture for telecommunications networks with the use of ZigBee and communication and data transfer elements. In addition, it has a server that collects and calculates energy generation and consumption data to establish usage and purchase patterns and creates useful information for statistical analysis. Finally, it is expected that this scheme will optimize the energy of the telecommunications network and result in energy savings.

The Evolution Of Organizational Energy Management: Developed Methodologies And The ISO 50001 Standard

This article presents the evolution of practices and procedures developed and applied in energy management in organizational environments. The global evolution of energy management and the evolution of guidelines applied in organizational energy management are discussed, which were consolidated in norms and standards, whose peak was reached with the international standard ISO 50001. This article reviews the published works that bring with them some contribution related to the methods developed and applied in conducting the process of implementing an energy management system, where the implementation of the ISO 50001 standard stood out, mainly in industrial environments. In all the works reviewed, it is clear that the success in implementing energy management through the ISO 50001 standard was achieved due to the continuous support of the organization's top management and the involvement and commitment of all members of the organization

A multi-agent system approach for real-time energy management and control in hybrid low-voltage microgrids

The real-time operation of microgrids is crucial due to its ability to enhance energy resilience and efficiency. Continuous monitoring and adaptation to fluctuations in energy supply and demand ensure a stable and reliable electricity supply to local communities, even in the case of grid disturbances. This article presents an efficient and easily implementable real-time energy management and control system based on multi-agent systems for hybrid Low-Voltage Micro-Grids (LVMGs) using energy storage systems and renewable sources. The main objective of the proposed approach is to determine optimal setpoints for all microgrid components to improve overall efficiency and reduce electricity costs while satisfying multiple constraints. The well-defined flexibilities of all microgrid components to adjust their power are exploited to achieve optimal power allocation. The approach is tested and validated by developing a simulation environment using the Java Agent Development (JADE) framework, enabling the implementation of microgrid optimization through MATLAB/Simulink.

Influence of Power Supply Reliability on Academic Performance and Project Completion Rates of Architectural Students at Caleb University, Lagos, Nigeria

This study investigates the influence of power supply reliability on academic performance and project completion rates among architecture students at Caleb University. The research adopts a quantitative approach, using a structured questionnaire to gather data from a representative sample of students across BSc, MSc, and PhD programs. Of the almost 700 population, 255 were sampled and the findings reveal that power interruptions are a frequent and significant issue, with 85% of students experiencing outages at least once a week and 60% reporting outages lasting between 1 to 3 hours. These disruptions have a pronounced negative impact on academic performance, with 78% of respondents indicating that power outages have adversely affected their grades. Furthermore, 82% of students reported delays in project completion due to power interruptions, with a substantial number having to redo portions of their work due to unsaved progress. The study highlights a strong correlation between the frequency of power outages and the decline in academic performance, as well as the delays in project completion. Additionally, the psychological impact of these outages, manifested in increased levels of stress and anxiety among 70% of respondents, further exacerbates the challenges faced by students. The research concludes that reliable power infrastructure is crucial for academic success, particularly in technology-intensive disciplines like architecture. Recommendations include improving power infrastructure, implementing energy management strategies, developing contingency plans, enhancing student support services, and fostering collaboration with power utility providers. By addressing these issues, educational institutions can create a more stable and conducive learning environment, thereby enhancing students' academic outcomes and overall well-being.

Planning, Operation and Supervision of Energy Renewal through Cooling Load and Thermal Comfort of Hotel Buildings

Abstract. The research uses a quantitative approach with descriptive, inferential and SEM statistical analysis using the Partial Least Square (PLS) method. The results of the study found that energy management starting from planning, operation and supervision showed a target cooling load of 25°C and a humandity of 60% for hotel buildings. The results of the calculation of external and internal cooling loads indicate that the hotel building has implemented an energy strategy using low wattage air conditioners and inverters. The results of SEM-PLS analysis obtained that the variables of planning, operation and supervision directly have a significant influence on cooling load, thermal comfort and energy renewability. Cooling loads and thermal comfort directly have a significant effect on energy renewability. For the analysis of the overall specific indirect effect, the planning, operation and supervision variables have a significant effect on energy renewability through cooling load and thermal comfort. This means that energy renewability is determined by the implementation of energy management starting from planning, operation and supervision as well as the calculation of cooling loads and thermal comfort.

Design of A Monitoring System for the Implementation of Energy Management in the Electrical Engineering Study Program Workshop of the Medan State Polytechnic

The researcher wants to make a KWH meter monitoring tool with estimated usage costs so that the tools he makes can help the community to minimize costs in the electricity consumption area, especially in the workshop room located on the 1st floor of building C at Medan State Polytechnic. The long-term goal of this research is to develop an Internet of Things (IoT)--based KWH meter monitoring tool that can read current, voltage, frequency, power factor, and power consumption. This utilization shows the use of costs that have been incurred in real-time by displaying the results on the LCD and can also be from the user's mobile phone. In this study, the strategy used in the energy management framework was determined using SWOT analysis. From the results of the measurement and monitoring of electrical energy consumption obtained the results that, energy management is carried out by applying Standard Operating Procedures for the use of electrical energy in the electrical engineering workshop room in order to save more minimal energy consumption with a large error (Error) PZEM in measuring Voltage is 0.0198% in measuring Current is 0.612%. in measuring Cosphi is 0.01%. in measuring Frequency is 0.003%. in measuring Power is 0.183%. And the average measurement error rate is below 0.5%, namely 0.23%.

Study Of Energy Management And Efficiency In Industrial Processes: Analysis Of Implementation And Its Impact On Productivity

This study focuses on the implementation and analysis of energy management and efficiency in the context of industrial processes to enhance productivity. Drawing upon literature review on the fundamental concepts of energy management and best practices in industries, this research identifies strategies and methods that can be applied to optimize energy use in manufacturing environments. The research methodology involves gathering data from various sources to evaluate the practical implementation of energy management strategies in manufacturing industries, including pre- and post implementation data analysis. The findings provide deep insights into the effectiveness of specific measures in reducing energy consumption, improving operational efficiency, and their overall impact on productivity. The study also highlights challenges that may arise in implementing energy management strategies, such as initial costs, staff training needs, and technology integration. However, the long-term benefits of efficient energy management include reduced operational costs and environmental sustainability. By combining technical and managerial approaches, this research provides a foundation for better decision-making in adopting sustainable practices in the industrial sector.

Thermoelectric properties of geopolymers with iron ore mine waste: A case study for energy management

One of the challenges facing our current and future generations is the effective management of energy and its acquisition through more sustainable means. One solution is using materials capable of generating energy from temperature differences. Construction materials could be the answer, as they are already integrated into structures and have good thermoelectric properties. Geopolymers, emerge as a promising candidate due to their enhanced sustainability compared to alternative materials. Our research explored the use of geopolymers for electricity generation from heat. To minimize the usage of kaolin, we incorporated 50 % of two mining residues obtained from old mines located in Portugal. This approach optimizes the utilization of mineral resources and mitigates the environmental impact. Various methods were used to characterize this material, such as X-ray diffraction, simple compressive strength tests and evaluation of thermoelectric properties, such as the Seebeck coefficient and figure of merit. The geopolymers tested exhibit semiconductor characteristics, demonstrating poor heat conduction due to their low thermal conductivity. Regarding thermoelectric properties, these materials display N-type behavior, with a Seebeck Coefficient between −643 μV/°C and −2760 μV/°C. These findings underscore the advantages of utilizing this sustainable material for the widespread implementation of energy management in buildings on a large scale.

Exploring energy management integration into upstream supply chains: a systematic literature review

In the effort to limit global warming to 1.5°C above the pre-industrial level, decarbonization of supply chains is crucial. Companies will need to reduce not only their direct and indirect emissions (scope 1 and 2) but also their indirect emissions (scope 3). In some sectors, the upstream scope 3 emissions can actually be larger than the companies’ direct emissions. Therefore, a systematic literature review was carried out to understand how previous research in the field of supply chain management (SCM) approached energy efficiency and energy management in the upstream supply chain. The results indicate that only a few studies have addressed energy efficiency within SCM, and the majority assess energy solely as total energy use, without exploring opportunities to reduce final energy use among upstream suppliers. Moreover, results show that there is a lack of standards and methods to assess suppliers’ energy use, making it difficult for suppliers, particularly small and medium-sized enterprises, to overcome barriers to implementing energy management. In conclusion, even though energy efficiency is a cost-effective means to reduce CO2 emissions, only a limited number of studies in the field of SCM have integrated energy efficiency, revealing a vast knowledge gap in this field.

Optimization of Work Systems and Ergonomics to Improve Comfort and Efficiency Through The Implementation of Energy Management

This research aims to implement mall operations that are comfortable, efficient, and effective in energy use and determine the value of Energy Consumption Intensity (IKE). This research uses a qualitative method with a literature study approach. Research data was obtained from measurements carried out by researchers at mall buildings in South Jakarta. Instrument data is obtained from the installed Kwh meter. Data analysis technique by comparing measurement results with data results standardized by the Ministry of Energy and Mineral Resources for IKE and Indonesian National Standards for thermal comfort levels. The research results obtained show that the IKE value is classified as efficient. The IKE value during 2023 ranges from 8,79 – 11,37 kWh/m2/month with the total annual IKE value being 263,16 kWh/m2/year. In terms of air conditioning, the average comfort standard in 2023 will be 25℃ and RH (humidity) at 62.9%.

Renewable energy supply chain in Malaysia: Fostering energy management practices and ecological performance

The trade-off between environmental issues and economic outcomes has challenged manufacturing firms to manage the renewable energy supply chain (RESC). The Malaysian manufacturing industry has been challenged for its capacity to contribute to renewable energy development and reliance on imported components. The renewable energy supply chain has risks for uncertainty, higher costs, longer lead times, and disruption. Prior studies uncover the impact of fostering energy management practices (EMPs) and ecological performance (EC) in the renewable energy supply chain under a natural resource-based view (RBV). The government has provided the incentive to drive the successful implementation of energy management to obtain clean energy and business sustainability. This study contributes to developing a theoretical model that examines the intervening effect of the RESC on EMPs and EC. This study analysed the responses of 129 manufacturing firms to understand energy management practices. The findings show that energy auditing positively relates to RESC and that government incentives have impacted energy management practices. Management commitment and energy knowledge directly affected manufacturing firms’ ecological performance. The results show that manufacturing firms can best design energy management, green strategy, and competitiveness for business sustainability. Theoretical, policy and managerial implications are discussed.

The development of energy saving measures as a basis of ensuring energy efficiency in higher education institutions in healthcare of Ukraine

The implementation of efficient energy management systems (EnMS) to meet the requirements of ISO 50001 is an urgent problem, taking into account the aggravation of the issue of energy supply and energy saving in the country, especially in the conditions of martial law. The main issue facing higher education institutions (HEIs) of Ukraine when creating rational activities for the use of energy resources is the implementation of an energy management system to meet the requirements of DSTU ISO 50001:2020. The main problems faced by all HEIs now are revision of legislation, rising prices and cost of energy resources, high inflation, frequent exchange rate changes. EnMS will allow each institution to monitor energy consumption and provide an opportunity to develop and implement effective energy saving projects. Aim. To theoretically substantiate and propose practical energy saving measures for a higher education institution (HEI) in the healthcare sector of Ukraine within the framework of the implemented energy management system. Materials and methods. The research materials were data from scientific publications, statistical reports and the results of own research, in particular measures for the energy modernization of electric lighting in public areas of educational buildings of HEI. Such scientific methods as the method of content analysis, comparative analysis, the method of generalization and systematization of information, as well as the methods of mathematical and statistical calculations were applied. Results and discussion. The calculation of electricity costs and savings for lighting public areas of all educational buildings of HEI of healthcare of Ukraine has been carried out, and the need for lighting equipment has been formed. The total electricity savings during the energy modernization of lighting in educational buildings of HEI of healthcare of Ukraine and the total economic efficiency from the electricity savings have been calculated. It has been found that the energy efficiency during the energy modernization of lighting in the educational buildings of HEI is 25,126 kWh/year, and the total economic efficiency from electricity savings is 69,600 UAH/year. Conclusions. Energy saving measures have been proposed as part of the implemented energy management system, which will make it possible to significantly save electricity and reduce the financial costs for its purchase and distribution. This, in turn, will allow HEI to form its own general energy supply strategy aimed at improving both energy efficiency and overall operational efficiency.

РАЗРАБОТКА И ОПТИМИЗАЦИЯ ЭНЕРГОСБЕРЕГАЮЩИХ СХЕМ ДЛЯ ПОРТАТИВНЫХ ЭЛЕКТРОННЫХ УСТРОЙСТВ

The article discusses modern approaches to the development and optimization of energy-saving circuits for portable electronic devices. The main focus is on reducing energy consumption by using low-power modes of component operation, optimizing the power supply circuit and implementing energy management algorithms at the system level. An analysis of the effectiveness of the proposed solutions is provided using specific devices as an example, with an assessment of their impact on performance and battery life. The results show a significant reduction in power consumption without compromising performance, which confirms the promise of the proposed approaches.

Optimal design of an adaptive energy management strategy for a fuel cell tractor operating in ports

As World trade is growing rapidly, the reduction of the environmental impact of in-port operations towards a low or zero-emission scenario is becoming a paramount issue. To this aim, replacing Diesel engines of cargo handling equipment used in port logistics (e.g. reach stackers, forklifts, yard tractors, etc.) with cleaner propulsion alternatives may play a major role. In this study, a robust rule-based energy management strategy is proposed for a newly developed fuel cell/battery hybrid powertrain of a yard tractor used for roll-on and roll-off in-port operations. As typical port operations are characterized by mission profiles that can vary significantly in terms of driving and duty cycles during the same work-shift, the proposed strategy, built upon the observation of the powertrain behavior under the application of an optimal controller, dynamically adapts the operation of fuel cell and battery in order to track a predefined battery state of charge trajectory, while minimizing the hydrogen consumption. The use of an optimal model-based approach as a reference for the design of an online implementable energy management strategy is indeed particularly suitable in the present case: despite their inherent high variability, the yard tractor mission profiles can be regarded as the combination of a set of predictable parameters. Results show that the application of the proposed control strategy allows the hybrid powertrain to achieve excellent performance, by leading its components to run efficiently and across suitable operative conditions. The achieved hydrogen consumption, for the considered missions, is only 2%–3% higher than that of the optimal controller, despite a quite different evolution of the battery state of charge, that is the feedback control variable. By means of this strategy, the transient loading of the fuel cell is prevented, while the battery pack ensures the fulfillment of the peak power requests, with beneficial effects in terms of on-board stored energy exploitation. The key advantage of the developed rule-based approach lies in its robustness, reliability and online applicability in real-time powertrain control.

Operational strategy and capacity optimization of standalone solar-wind-biomass-fuel cell energy system using hybrid LF-SSA algorithms

This paper presents a framework for the efficient design and evaluation of a standalone hybrid renewable energy system (HRES) to meet the energy requirements of a rural community in the north-eastern region of Nigeria. The proposed microgrid system incorporates solar photovoltaic, wind turbines, biomass gasifier, fuel cell, and Battery storage. The sizing of each component is determined through the utilization of real local meteorological data and the load demand over a year, employing the Levy flight-salp swarm algorithms (LF-SSA). The optimization objective is to minimize the annualized system cost (ASC) of the HRES, while also considering the reliability constraint of Loss of power supply probability (LPSP). The comparative outcomes demonstrate that the LF-SSA surpasses other examined algorithms, namely the salp swarm, genetic algorithm, and HOMER software by achieving substantial cost savings of $29033, $50796, $191771 respectively in relation to the proposed HRES. The result further shows that, the LF-SSA provides the lowest LCOE of $0.933162/kWh, in contrast to SSA at $0.947737/kWh, GA at $0.958660/kWh, and HOMER at $1.075351/kWh. Additionally, the results indicate that the implemented Energy Management System (EMS) has successfully facilitated the establishment of an environmentally friendly and cost-effective energy system.

Hardware Design for Implementation of Energy Management in a Solar-Interfaced DC Microgrid

The growing power requirement and the limited availability of fossil fuels makes it necessary to use renewable energy resources (RERs) as an alternative. The penetration of renewable sources in the existing power system becomes a big challenge for the safe and reliable operation of the system. Again, the erratic nature of these sources makes it impossible to supply constant power to the consumers. To overcome the intermittency of the environment and to provide constant reliable power to the loads, battery, fuel cell, and supercapacitor like storage devices are required in the system. Here, by considering the complementary characteristics of supercapacitors with high power density (500-5000W/L) and batteries with high energy density(50-80Wh/L), a combination of these two storage devices is used with renewable sources as a hybrid storage system. Hence, a proper power management scheme is necessary to control the power flow in the system and to balance the total power between generation and demand. In this paper, an energy management technique was proposed along with detailed modeling for the experimental setup of the DC microgrid (DCMG). A dSPACE 1103 controller was implemented in the hardware setup. The validation of the proposed energy management scheme and hardware design is done by using both simulation and experimental results.

Implementation of Green Tourism Practices in the Hotels and Resorts of White Beach Puerto Galera

This study proposed a sustainable green tourism business support program for White Beach, Puerto Galera, Oriental Mindoro as assessed by hotels and resorts’ owners/managers/staff and tourists. This utilized a descriptive research design and employed survey questionnaires as the main data-gathering instrument for this study. It determined the extent of manifestation of green tourism practices. This study was carried out in select DOT accredited hotels and resorts around White Beach, Puerto Galera, and Oriental Mindoro. The respondents was composed of 177 composed of 49 foreign tourists, 51 local tourists from the host community such as local residents, LGU, Local Tourism Office, NGOs/POs, DOT-MIMAROPA, and 77 hotels and resorts owners, managers, and staff. The researcher used survey questionnaires for data gathering. Results revealed that hotels and resorts’ owners, managers, and staff; and local and foreign tourists equally see the extent of manifestation of green tourism practices. Hotels and resorts should adopt energy-saving technologies and practices to reduce their environmental impact. This can include investing in energy-efficient equipment and appliances, implementing energy management systems, and raising awareness among staff and guests about the importance of energy conservation. Engaging with energy conservation experts and organizations can provide guidance on effective energy-saving strategies and technologies specific to the hospitality industry.

Battery thermal- and cabin comfort-aware collaborative energy management for plug-in fuel cell electric vehicles based on the soft actor-critic algorithm

While the air conditioning system provides a comfortable thermal environment for vehicle occupants, it is also one of the most energy-intensive auxiliary devices in modern vehicles. Meanwhile, the operating characteristic of the battery system significantly impacts the economic and safety performance of the vehicle. To improve the energy efficiency of plug-in fuel cell electric vehicles, this paper proposes a collaborative energy management strategy based on the soft actor-critic algorithm, considering battery thermal management and cabin thermal comfort management. First, the soft actor-critic algorithm is implemented in energy management research for fuel cell electric vehicles. Second, by establishing a control-oriented vehicle-integrated thermal management model and adopting a novel air conditioning system design, the coordinated optimization of the battery thermal management and cabin thermal comfort management is achieved. Finally, the collaborative energy management strategy based on the soft actor-critic algorithm is presented to minimize the total operating cost, while maintaining the optimal battery temperature range and cabin thermal comfort. The online testing results demonstrate that the implemented energy management strategy based on the soft actor-critic algorithm can achieve 96.06% fuel economy of the dynamic programming benchmark methodology, while significantly improving computational efficiency. Moreover, the proposed collaborative energy management strategy can effectively improve the overall vehicle fuel economy, manage the battery temperature within the optimal operating range, and maintain cabin thermal comfort. However, with the prolonged operation of the air conditioning system, the total operating cost of the vehicle increases considerably, up to 28.12% or even more, indicating that it is a highly energy-consuming component.

Coordinated emergency control strategy of high‐voltage direct current transmission and energy storage system based on Pontryagin minimum principle for enhancing power system frequency stability

AbstractWith the increase of the proportion of renewable energy sources, the rotational inertia of the power system decreases, which results in the risk of frequency instability increasing. Based on Pontryagin minimum principle, this paper presents a systematic emergency control strategy by coordinating the active power of voltage source converter based high‐voltage direct current transmission (VSC‐HVDC) and energy storage system (ESS) to improve the system frequency stability, reduce the operation cost of VSC‐HVDC and ESS and implement energy management of ESS. In the stage of frequency fall, a hierarchical control strategy is proposed to prevent the frequency from dropping below the preset threshold value and achieve the optimal distribution of support power between VSC‐HVDC and ESS. For the system level, the total optimal power support trajectory of VSC‐HVDC and ESS is optimized by the Gaussian pseudospectral method with the minimum total control energy, considering the constraints of frequency. For the station level, the power references of VSC‐HVDC/ESS are determined by the model predictive controller (MPC), with the minimum frequency deviation of the non‐disturbed system connected to VSC‐HVDC, control cost of VSC‐HVDC and loss cost of ESS. In the stage of frequency recovery, an energy recovery control strategy is designed to aim at quickly recovering energy of ESS while considering the minimum frequency limit. Finally, the correctness and effectiveness of the proposed strategy are verified in the improved IEEE 39 bus system and a real‐power system.

Social spider optimization algorithm-based energy management of photovoltaic powered textile industry

<span lang="EN-US">The competitive nature of business, especially in the production industries like the textile industry, increases the importance of the economic operation of the production setup. Energy management is one important tool that supports the economic operation of any industry. This paper attempts to develop an optimized energy management algorithm using Social Spider optimization in a textile industry environment. Energy management for one full day is analyzedin the environment, considering fixed, shift-able, and uninterruptible loads for energy management implementation. The benefit of implementing photovoltaic power on the premises is discussed with an appropriate calculation. The results are compared with the bat algorithm and the ant lion algorithm. MATLAB 2017b is used to program the concept.</span>