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New technologies are developing very faster than before and also technologies changed rapidly needs of people according to the use of technology. To understand the meaning of the benefits that renewable energy can bring we must firstly establish our understanding of the concept. The future of the developed and developing countries in the world depends on the availability and transport of energy. It...
In a response to economic growth, electric power utilities installed many electric power facilities to meet power demand. However, these facilities have aged and should be replaced in the near future. Moreover, the demand is said to constantly increase. Therefore, it is necessary to partially upgrade facilities. In this paper, we upgrade transformers with one of the financial engineering techniques...
Nowadays, the population of installed transformer in PT PLN (Persero) Transmisi Jawa Bagian Barat is 305 units which consists of many variations of manufacturers and types. It consists of 21 manufacturers and 38 types along with different operational age from the young age transformers (under 20 years) until the old age transformers (more than 20 years). It means, TJBB needs different strategy for...
In order to improve the quality of life-cycle-cost of the transmission line system, this paper introduces the basic theory of the life-cycle-cost, analyse the construction of the lifecycle-cost of transmission line. Then two main parameters, the design life of transmission line and project fund discount rate, will be researched detailedly. At last, by giving the life-cycle-cost prediction model for...
Congestion and limited capacity in the transmission network can create market power for some market players and an inefficient competitive environment. It is necessary to soundly invest in network development to address the aforementioned issues. One group of major players in the electricity market are Generation Companies (GENCOs). In this paper, an economic investigation of transmission investment...
In this paper, through the technology comparison analysis of the process planning and FO/AO, it is concluded that the process expression and management form of FO/AO are more suitable for the control of aircraft technical status. Integrated secondary development of MES system and CAPP system, it implements display form of FO/AO and process control based on MES system, and meets the requirement of...
In Ethernet passive optical network (EPON), the distance between optical network units (ONUs) and optical line terminal (OLTs) is in a large range of changes. Only dividing ONUs into a network according to locations will influence the user's QoS. In view of this situation, this paper puts forward a planning strategy of ONUs clustering. We first consider the economy, network delay and network reliability,...
In ethernet passive optical network (EPON), the distance between optical network units (ONUs) and optical line terminal (OLTs) is in a large range of changes. Only dividing ONUs into a network according to locations will influence the user's QoS. In view of this situation, this paper puts forward a planning strategy of ONUs clustering. We first consider the economy, network delay and network reliability,...
Utilities use the bus/branch model for planning and operations studies. In the bus/branch model, bus numbers are used as unique identifiers. However, bus numbers can change due to addition of equipment, specific substation configurations (splitting buses) or due to equipment outages. This often creates problems because many auxiliary files used in power system studies need to be modified. If the node/breaker...
As Thailand's electricity demand increases, the country's power supply must meet this new demand. An increasing portion of energy production from renewables will lead to a drastic change in net demand characteristic on traditional power supplies. If the overall power plants in the system cannot respond to this fluctuating and uncertain demand, it may cause generation demand to be unbalanced and lead...
Successful implementation of massive machine-type communications (MTC) service over cellular networks is an important enabler of Internet of things. As the existing cellular infrastructure has been designed and optimized for moderate traffic, the introduction of MTC in cellular networks results in several key challenges, among them, temporal starvation of initial access resources is of paramount importance...
This paper presents a study the generation development plan of Electricité du Laos (EDL) in the north and central 1 region of the Lao people's democratic republic (Lao PDR). This study considered the 12 hydropower development plan projects, which will be connected to the EDL power grid by using the theories of the power flow analysis (voltage, loading, and power loss) and system reliability assessments...
Demand for (public) transportation is subject to dynamics affected by technological, spatial, societal and demographic aspects. The political environment, together with financial and spatial constraints limit the possibilities to address transit issues arising from growing demand through the construction of new infrastructure. Upgrading of existing services and improving integration over the entire...
In light of the politically enforced increase of distributed generation units based on renewable energies, network operators have to apply proactive network planning actions to guarantee a technically secure and reliable operation of the network. In addition to the conventional network expansion, network operators can utilize innovative equipment as well as apply restriction of the peak power feed-in...
Nowadays, our streets and highways are growing in traffic congestion as large number of cars are entering the transportation system due to rise in population. The high volume of vehicles and numerous signalized intersection the traffic congestion is causing huge problems to schedule reliability. As transportation demand is increasing various road networks are facing increasing congestion. To mitigate...
Distributed overlay-based publish/subscribe systems provide a selective, scalable, and decentralized approach to data dissemination. Due to the dynamic communication flows between data producers and consumers, the overlay topology of such systems can become inefficient over time and therefore requires adaptation to the existing load. Existing studies propose algorithms to design overlay topologies...
In this paper we study how supervised machine learning could be applied to build simplified models of realtime (RT) reliability management response to the realization of uncertainties. The final objective is to import these models into look-ahead operation planning under uncertainties. Our response models predict in particular the real-time reliability management costs and the resulting reliability...
In recent years, power systems have been watching important advancements related with Plug-in-Electrical Vehicles (PEVs), Demand Side Management (DSM), Distributed Generation (DG), Microgrid and Smart Grid installations that directly affect distribution networks while impacting indirectly on Transmission studies. These changes will lead to an extra flexibility on the transmission-distribution boundary...
With the development of intelligent technologies, self-driving vehicles are considered as a promising solution against accident, traffic congestion and pollution problems. Intelligent vehicle techniques have been the research focus all over the world. However, full self-driving vehicles are still far away from its realization and extensive application due to safety requirements and cost considerations...
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