Research and Design of a Digital Twin-Based Enterprise Architecture Digital Control Platform for Provincial Electrical Power Company

2021 ◽  
Author(s):  
Ji Wu ◽  
Ming Zhou ◽  
Min Xu ◽  
Jin Zhang ◽  
Yang Guo ◽  
...  
Keyword(s):  
Digital Control ◽  
Enterprise Architecture ◽  
Electrical Power ◽  
Digital Twin ◽  
Power Company ◽  
Research And Design

Chain and Sprocket Hydro Generator Drive System

2017 ◽  
Author(s):  
Cole Deering
Keyword(s):  
Electrical Power ◽  
Small Towns ◽  
Drive System ◽  
Hydro Power ◽  
Future Design ◽  
Power Company ◽  
System P ◽  
Water Wheel ◽  
Electrical Power Output ◽  
The Hill

This project aims to bring power to rural towns in Malawi through the use of a micro hydro generator. Currently only about 11% of rural Malawi have electrical power access according to the world bank, sustainable energy for all database. The rugged terrain makes it ideal for hydro power. Near Hastings Mkandawire village is a small river which is diverted through plastic pipes. These pipes are plumbed downhill, this allows Hastings to increase the pressure of the water. At the bottom of the hill the water is directed at a water wheel on a shaft hooked up to a small generator. Hastings Mkandawire is the man who started the company Magnetic Power Company who is responsible for building these small generators. Hastings started by converting motor casings and other scrap materials into Nano-hydro-generators. What Hastings would like to have in his future design is sand casted key parts so generators can be mass produced. Hastings and his business want to spread access of electricity in his community and other small towns. We are going to aid in this process by helping to design a drive system that maximizes the performance measured as electrical power output for a flow of water.

Development of an HTS Power Cable Based on YBCO Tapes

2006 ◽  
Vol 47 ◽  
pp. 220-227
Author(s):  
S. Mukoyama ◽  
M. Yagi ◽  
N. Kashima ◽  
Yutaka Yamada ◽  
Yuh Shiohara
Keyword(s):  
Electrical Power ◽  
Ac Loss ◽  
Power Cable ◽  
Superconducting Layer ◽  
Technical Problems ◽  
Xlpe Cable ◽  
Power Company ◽  
Ybco Tapes ◽  
Ybco Tape ◽  
Economical Choice

Many technical problems need to be developed in order that a high temperature superconducting (HTS) cable will use in a real power network. A second-generation HTS tape (YBCO coated conductor) has potential of making its AC loss lower than that of a BSCCO tape because the superconducting layer of a YBCO tape is thinner than that of a BSCCO tape. Moreover, cost of a YBCO tape will become less than that of a BSCCO tape in future because quantity consumed of costly component (such as silver) in a YBCO tape is less than that in a BSCCO tape. Considering these, an HTS power cable that using YBCO tapes will become an economical choice compared with a conventional XLPE cable or a BSCCO HTS cable. HTS power cables using YBCO tapes have been developed in the Japanese national projects. HTS conductors were fabricated by Furukawa and YBCO tapes were manufactured by ISTEC SRL and Chubu Electrical Power Company, and these properties were measured.

scholarly journals Hardware-in-the-Loop and Digital Control Techniques Applied to Single-Phase PFC Converters

Electronics ◽  
2021 ◽  
Vol 10 (13) ◽  
pp. 1563
Author(s):  
Paula Lamo ◽  
Angel de Castro ◽  
Alberto Sanchez ◽  
Gustavo A. Ruiz ◽  
Francisco J. Azcondo ◽  
...  
Keyword(s):  
Power Systems ◽  
Digital Control ◽  
Single Phase ◽  
Electrical Power ◽  
Cost Effective ◽  
Power Converter ◽  
Hardware In The Loop ◽  
Electrical Power Systems ◽  
Electrical Grid ◽  
Control Techniques

Power electronic converters for power factor correction (PFC) play a key role in single-phase electrical power systems, ensuring that the line current waveform complies with the applicable standards and grid codes while regulating the DC voltage. Its verification implies significant complexity and cost, since it requires long simulations to verify its behavior, for around hundreds of milliseconds. The development and test of the controller include nominal, abnormal and fault conditions in which the equipment could be damaged. Hardware-in-the-loop (HIL) is a cost-effective technique that allows the power converter to be replaced by a real-time simulation model, avoiding building prototypes in the early stages for the development and validation of the controller. However, the performance-vs-cost trade-off associated with HIL techniques depends on the mathematical models used for replicating the power converter, the load and the electrical grid, as well as the hardware platform chosen to build it, e.g., microprocessor or FPGA, and the required number of channels and I/O types to test the system. This work reviews state-of-the-art HIL techniques and digital control techniques for single-phase PFC converters.

scholarly journals Evacuation and Community Issues Caused by Nuclear Disaster in Fukushima Japan

2017 ◽  
Vol 3 (1) ◽  
pp. 40
Author(s):  
Akira Takagi
Keyword(s):  
Rural Community ◽  
Nuclear Power ◽  
Electrical Power ◽  
Power Station ◽  
Nuclear Disaster ◽  
Power Company ◽  
Community Conflict ◽  
Local Residents ◽  
Community Issues ◽  
Evacuation Behaviors

The aim of this study is to clarify the evacuation behaviors of the local residents in a small rural community called “T” district in Iwaki City, Fukushima Prefecture at the Great East Japan Earthquake (GEJE) on March 11th, 2011 and how their personal relationship changed subsequently. This district suffered more impact from the nuclear disaster caused by Tokyo Electrical Power Company Fukushima Daiichi Nuclear Power Station (TEPCO-1F NPS) accident than from the earthquake itself: a split in the community arising from the residents’ various evacuation behaviors and disagreement in their attitudes toward radioactivity. For example, a serious conflict occurred between those who returned from out-of–district evacuation (“escapees”) and those who consistently stayed within the district (“non-escapees”). However, on the other hand, as a way to maintain their community functions, there was an attempt made by the returnees inside the community in order to temper the conflict and another attempt provided from outside of the community such as the re-start of university student experience program which had been carried out by the local residents before the GEJE. Now that nearly 6 years have passed since the occurrence of the GEJE, the community conflict is becoming less obvious but not yet completely solved.

scholarly journals A global system for mobile communications-based electrical power consumption for a non-contact smart billing system

2021 ◽  
Vol 11 (6) ◽  
pp. 4659
Author(s):  
Ihsan Jabbar Hasan ◽  
Bushra Mahmoud Waheib ◽  
Nahla Abdul Jalil Salih ◽  
Nadhir Ibrahim Abdulkhaleq
Keyword(s):  
Mobile Communications ◽  
Electrical Power ◽  
Minimum Cost ◽  
Dual Band ◽  
Smart Power ◽  
Global System ◽  
Billing System ◽  
Power Company ◽  
Starting Point ◽  
Lcd Display

<span>This paper proposes a cheap solution to be a starting point for building smart electrical power billing systems. Electrical power has many challenges issues in Iraq, one of these challenges and the most important is the Billing system. The smart power meter uses an Arduino Uno as the core for controlling the sensed data and transmits it to the electrical power unit for billing services. The system is constructed with two parts: the transmitting unit measures the current, voltage, power and power factor through the compact new sensor PZEM-004T. The data sensed and processed by the microcontroller which displayed the KWh on (2*16 LCD) display. This data also transmitted to the electrical power company unit via the global system for mobile communications (GSM) module (SIM900A) which is a dual band GSM/GPRS-</span><span>general packet radio service</span><span> modem. The receiving part is mainly dedicated for collecting the required consumed power data via the same (SIM900A) module and also can display it using (2*16 LCD) display. For the sake of saving these data, the receiver part uses SD ram for such purposes. With such proposed system the electrical power company can control and collect their fees monthly without loss and with minimum cost.</span>

POLCA-T: Validation of Transient Bundle Flow Predictions During an All Recirculation Pumptrip in a BWR

2006 ◽  
Author(s):  
Ulf Bredolt
Keyword(s):  
Nuclear Power ◽  
Power Plants ◽  
3D Model ◽  
Critical Power ◽  
Electrical Power ◽  
Measurement Data ◽  
Reactor Core ◽  
Power Company ◽  
3D Effects ◽  
Good Agreement

In this paper predicted results obtained with the POLCA-T code are compared to measurement data from an all recirculation pump trip test made at the Nuclear Power Plant Olkiluoto 1 during its commissioning in 1978. Olkiluoto 1 is one of three nuclear power plants owned by the electrical power company Teollisuuden Voima OY in Finland. The prediction is based on a best estimate reactor analysis code that incorporates a full 3D model of a reactor core into a system model. The use of a coupled code provides a means to simulate interactions between the reactor core and the plant dynamics to increase the understanding of different events and its impact on the core behaviour. The following conclusions are made based on the simulations with POLCA-T of the Olkiluoto 1 commissioning test of tripping all recirculation pumps: • POLCA-T predicts the event accurately, the flow coast down and the power decay is in good agreement with measured data. • 3D effects in channel flow can not be observed. The observed effects support the current use of a 1D approach since this is conservative with respect to power and the evaluation of Operating Limit Critical Power Ratio, (OLMCPR). This conclusion is also supported by measurement data.

Fuel and Combustion System Capabilities of GE’s F and HA Class Gas Turbines

2017 ◽  
Author(s):  
Jeffrey Goldmeer ◽  
William York ◽  
Paul Glaser
Keyword(s):  
Natural Gas ◽  
Gas Turbines ◽  
Electrical Power ◽  
Combined Cycle ◽  
Combustion System ◽  
Digital Twin ◽  
Fuel Flexibility ◽  
Natural Gas Prices ◽  
Recent Developments ◽  
Combustion Technology

The world is currently undergoing a shift in the power industry with an increase in the amount of electrical power being generated from natural gas. This is being driven, in part, by the increase in availability of natural gas derived from shale gas and the reduction in global natural gas prices. In parallel, there is a second trend; a shift of new gas turbines installations to higher efficiency F and HA-class gas turbine combined cycle platforms. Supporting these industry trends, GE’s DLN 2.6+ combustion system, which is available for the 7F, 9F, 7HA, and 9HA gas turbines offers a high degree of operational and fuel flexibility. The latest evolution of this combustion technology for GE’s 7F gas turbines has been commissioned on 25 units, including new units and upgrades to existing turbines. The increased fuel and operational flexibility of this system is aided by GE’s advanced control systems that includes a high fidelity digital twin. This paper details recent developments of the DLN 2.6+ combustion system as well as validation examples for both the DLN 2.6+ and the digital twin controls system.

Public Knowledge and Understanding of Overhead Electrical Power Lines: A Second Look

1989 ◽  
Vol 33 (9) ◽  
pp. 560-564 ◽  
Author(s):  
Kent P. Vaubel ◽  
Kimberly A. Donner ◽  
Susan L. Parker ◽  
Lila F. Laux ◽  
Kenneth R. Laughery
Keyword(s):  
Education Program ◽  
Electrical Power ◽  
Power Line ◽  
Power Lines ◽  
Public Knowledge ◽  
Safety Education ◽  
The Public ◽  
Power Company ◽  
Overhead Power Lines

Public knowledge and understanding of the hazards associated with overhead power lines were examined in the greater Houston, Texas area. A 1988 public opinion survey was conducted as a follow-up to a similar 1982 survey which found the public to be ill-informed about power lines. Partly as a result of these 1982 findings, the Houston Lighting and Power Company initiated a public education program aimed at increasing its customers' power line hazard knowledge. The program consisted of TV and radio broadcasts, newspaper advertisements, and bill inserts (stuffers). The purpose of the present research was to determine the effects of this educational program. 306 respondents were interviewed by telephone over a two month period. Results of the present survey were similar to those found in 1982 indicating virtually no change occurred in power line hazard knowledge as a result of the safety education program. Specifically, people did not know that power lines are uninsulated, nor did they have an understanding of the amount of electricity transmitted by these lines.

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