Evaluating distribution system losses using data from deployed AMI and GIS systems

2010 ◽  
Author(s):  
Jeff Triplett ◽  
Stephen Rinell ◽  
Jim Foote
Keyword(s):  
Distribution System ◽  
Using Data

scholarly journals Prognosis of Water Quality Sensors Using Advanced Data Analytics: Application to the Barcelona Drinking Water Network

Sensors ◽  
2020 ◽  
Vol 20 (5) ◽  
pp. 1342 ◽  
Author(s):  
Diego Garcia ◽  
Vicenç Puig ◽  
Joseba Quevedo
Keyword(s):  
Water Quality ◽  
Distribution System ◽  
Data Analytics ◽  
Water Distribution ◽  
Discrete Event ◽  
Spatial Models ◽  
Remaining Useful Life ◽  
Health State ◽  
Using Data ◽  
Water Quality Sensors

Water Utilities (WU) are responsible for supplying water for residential, commercial and industrial use guaranteeing the sanitary and quality standards established by different regulations. To assure the satisfaction of such standards a set of quality sensors that monitor continuously the Water Distribution System (WDS) are used. Unfortunately, those sensors require continuous maintenance in order to guarantee their right and reliable operation. In order to program the maintenance of those sensors taking into account the health state of the sensor, a prognosis system should be deployed. Moreover, before proceeding with the prognosis of the sensors, the data provided with those sensors should be validated using data from other sensors and models. This paper provides an advanced data analytics framework that will allow us to diagnose water quality sensor faults and to detect water quality events. Moreover, a data-driven prognosis module will be able to assess the sensitivity degradation of the chlorine sensors estimating the remaining useful life (RUL), taking into account uncertainty quantification, that allows us to program the maintenance actions based on the state of health of sensors instead on a regular basis. The fault and event detection module is based on a methodology that combines time and spatial models obtained from historical data that are integrated with a discrete-event system and are able to distinguish between a quality event or a sensor fault. The prognosis module analyses the quality sensor time series forecasting the degradation and therefore providing a predictive maintenance plan avoiding unsafe situations in the WDS.

scholarly journals A smart algorithm for fault detection and location in electric power distribution system

2021 ◽  
Vol 12 (4) ◽  
pp. 2123
Author(s):  
Hamid Touijer ◽  
Mohammed El Alami ◽  
Mustapha Zahri ◽  
Mohamed Habibi
Keyword(s):  
Electric Power ◽  
Power Supply ◽  
Power Distribution ◽  
Distribution System ◽  
Fault Location ◽  
System Stability ◽  
Test Results ◽  
Power Distribution System ◽  
Electric Power Distribution ◽  
Using Data

In an electric power distribution system (EPDS), fault location accuracy is critical for system stability. In the past, several algorithms have shown that they are inefficient. However, the results of these algorithms have been shown to be inefficient, and they should not be used for every sort of the faults. This paper presents a new algorithm capable to determine the location of fault accurately with low error rate. It is based on the voltage and current calculation at the source station for different types of faults by using either one power supply or double power supply. The work includes the formulation analytical development as simulation test results. The test results are produced by numerical simulation using data from a recognized distribution line in the literature.

scholarly journals Online Modelling of Water Distribution System Using Data Assimilation

2014 ◽  
Vol 70 ◽  
pp. 1261-1270 ◽  
Author(s):  
I. Okeya ◽  
Z. Kapelan ◽  
C. Hutton ◽  
D. Naga
Keyword(s):  
Data Assimilation ◽  
Distribution System ◽  
Water Distribution ◽  
Water Distribution System ◽  
Using Data

Public Distribution System in Uttar Pradesh: Access, Utilization and Impact

2018 ◽  
Vol 12 (1) ◽  
pp. 20-36 ◽  
Author(s):  
Abha Gupta ◽  
Deepak K. Mishra
Keyword(s):  
Distribution System ◽  
Uttar Pradesh ◽  
National Sample ◽  
Sample Survey ◽  
Primary Data ◽  
Calorie Intake ◽  
Open Market ◽  
Consumer Expenditure ◽  
Public Distribution System ◽  
Using Data

The public distribution system (PDS) in Uttar Pradesh (UP), India’s most populous state, was widely recognized as dysfunctional. However, following the introduction of reforms in recent times, analysts have put this state in the category of “reviving” states. Against this backdrop, this article presents recent evidence of improved accessibility, utilization and impact of PDS in UP using data from the 68th Round of the National Sample Survey Office (NSSO) Consumer Expenditure Survey (CES) and primary data collected from six villages of western UP. The main findings show that the accessibility to PDS rationing is higher among lower socioeconomic groups and regions, which also have a higher share of PDS commodities in their food consumption and calorie intake in comparison to the non-poor categories. PDS has also made a positive and significant contribution towards ensuring food security among poor families. However, entitlements for the non-poor have been gradually phased out as the majority of them do not purchase food items and consider their entitlement for “kerosene only.” With high levels of corruption and lower income margins, ration dealers siphon off a part of the PDS quota for sale in the open market or charge higher prices to cover their losses.

Residual chlorine management in water distribution systems using network modelling techniques: case study in Seoul City

2004 ◽  
Vol 4 (5-6) ◽  
pp. 421-429
Author(s):  
J.C. Ahn ◽  
Y.W. Kim ◽  
K.S. Lee ◽  
J.Y. Koo
Keyword(s):  
Water Treatment ◽  
Distribution System ◽  
Distribution Systems ◽  
Water Distribution ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Residual Chlorine ◽  
Network Modelling ◽  
Using Data ◽  
One Year

Twelve sampling locations in a network from a water treatment plant to consumers' taps were selected for measuring residual chlorine loss, THMs, TOC, etc. and 24 hour sampling in the locations was conducted on a bimonthly basis for one year. Chlorine bulk decay and THM formation tests were carried out by bottle tests under controlled temperatures for three locations: a water treatment plant, a large service reservoir, and a pumping station. Water quality modelling of chlorine loss in the distribution system was performed using data collected in the field study. This study contributed to the improvement of chlorine management in the distribution system by providing information for operators to maintain a minimum level of chlorine residual in a service reservoir.

Applicable background minimum night flow for leakage management of small district metered areas in Korea

2005 ◽  
Vol 5 (3-4) ◽  
pp. 181-188
Author(s):  
H. Lee ◽  
S. Chung ◽  
M. Yu ◽  
J. Koo ◽  
I. Hyun ◽  
...  
Keyword(s):  
Water Balance ◽  
Distribution System ◽  
Flow Equation ◽  
Leakage Detection ◽  
Water Leakage ◽  
Minimum Night Flow ◽  
Balance Analysis ◽  
Using Data ◽  
Real Losses

In case of Seoul city in Korea, the level of water leakage from any distribution system is evaluated by comparison of measured minimum night flows (NFMs) with a fixed allowable leakage level. However, infrastructure condition of District Metered Areas (DMAs) could be misjudged, because characteristics of the system are not considered properly. Therefore the components of NFM were estimated in residential and business DMAs by using data of night uses collected by modified option A test and real losses from water balance analysis. A new background minimum night flow equation was developed by the components of NFM. Applicability of the equation was tested on various revenue water % residential and business DMAs. As a result, it is concluded that the new background night flow developed in this study is more reasonable in Korea and could be used to judge whether the DMAs have economically recoverable unreported bursts prior to leakage detection activity.

scholarly journals Electric vehicles as distribution grid batteries: a reality check

2021 ◽  
Vol 4 (S2) ◽  
Author(s):  
Prasad Prakash Malya ◽  
Laura Fiorini ◽  
Mohammadhadi Rouhani ◽  
Marco Aiello
Keyword(s):  
Electricity Market ◽  
Distribution System ◽  
Distribution Grid ◽  
Round Trip ◽  
Profit Model ◽  
Vehicle To Grid ◽  
Reality Check ◽  
Battery Degradation ◽  
Current Transition ◽  
Using Data

AbstractThe current transition towards electric mobility implies that a significant portion of electricity is drawn by and stored in the electric vehicle’s (EV) batteries. Vehicle-to-grid (V2G) technologies can potentially give distribution system operators access to such energy to provide ancillary services, while remunerating the vehicle owners for their availability to participate. Although the benefits of stabilization and grid efficiency improvements are clear, is it appealing and lucrative for the vehicle owners to participate in such services? In this work, we answer this question by modelling the V2G system and performing economic projections of the possible benefits for EV owners. In particular, we present a novel way of parametrizing the electric vehicle driving profile and the V2G energy transfer to compute battery degradation costs. A profit model is developed to evaluate the profit earned by the vehicle owners offering their batteries. The profit is estimated on the basis of the owner’s inclination to buy and sell energy from the grid based on the electricity price. Using data of the German electricity market, we estimate a profit of 662 €/EV/Year for a vehicle with 100 kWh capacity, 95% battery round trip efficiency and driving 52 km per day. The remuneration is meaningful and can have the potential to encourage EV owners to participate in V2G service.

Polar Magnetic Field Reversals of the Sun in Maunder Minimum

2000 ◽  
Vol 179 ◽  
pp. 193-196
Author(s):  
V. I. Makarov ◽  
A. G. Tlatov
Keyword(s):  
Magnetic Field ◽  
Maunder Minimum ◽  
The Sun ◽  
Annual Rings ◽  
Field Reversal ◽  
Polar Magnetic Field ◽  
Pine Trees ◽  
Using Data ◽  
Magnetic Field Reversal

AbstractA possible scenario of polar magnetic field reversal of the Sun during the Maunder Minimum (1645–1715) is discussed using data of magnetic field reversals of the Sun for 1880–1991 and the14Ccontent variations in the bi-annual rings of the pine-trees in 1600–1730 yrs.

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