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Distribution Side Load Monitoring, Control and Theft Detection
Kumail Hassan Kharal,Chang-Hwan Kim,Tahir Khurshaid,Sang-Bong Rhee 한국조명·전기설비학회 2017 조명·전기설비학회논문지 Vol.31 No.10
Load management and electricity theft on the distribution side are one of the major problems of electrical power systems. This paper presents a novel technique used to eradicate load management and electricity theft detection problems by designing a working model named “Distribution Side Load Monitoring, Control and Theft Detection”. This model consists of three modules: Main module, Consumer module and Relay module. A microcontroller ‘ATmega8’ is the main part of these modules. The Proteus Design Suite was used for the simulation and printed circuit board layout. The main module is installed in a substation and has voltage and current sensors that measure the voltage and current of the line that is connected to the consumer through relays. This limits the consumer’s power and detects theft. This module is also connected to a computer through parallel interface. A consumer module is installed in the energy meter. This module measures and monitors load power. A relay module is simply a switching circuit between the main module and consumer module that can turn on or off the consumer supply on main module instructions. The consumer system (consumer module) installed on the electric meter will send its consumption readings to the central server (substation module) for processing and bill computing. The central server (substation module) will also measure the total power being distributed to all consumers. The difference between the two readings must ideally be zero, when no illegal user is attempting to tap power lines assuming the line losses are known. An illegal load in the power line will cause a difference in the distribution and consumption readings. This difference in the two readings warns the power station of the theft status for that power line and accordingly a manual or auto control mechanism is implemented. The effectiveness of this work has been tested on Proteus Design Suite software.
Gholami Farkoush, Saeid,Khurshaid, Tahir,Wadood, Abdul,Kim, Chang-Hwan,Kharal, Kumail Hassan,Kim, Kyu-Ho,Cho, Namhun,Rhee, Sang-Bong Hindawi Limited 2018 Complexity Vol.2018 No.-
<P>A large number of electromagnetic transient studies have been analyzed for finding the overvoltage behavior of power system. A grounding grid of power system is so important for reducing the effect of overvoltage phenomena during a short-circuit event. Two sections are important in grounding system behavior: soil ionization and inductive behavior; this paper focuses on the inductive manner of grounding grid. The grounding grid is considered as a conductor segment; each conductor segment acts as a grounding unit. In this paper, the transient methodology is introduced to investigate the lightning effect on grounding body at each point of grounding grid in normal and optimized conditions. Genetic algorithm is applied for regular and irregular grounding grid to obtain best values of mesh size with the lower ground potential rise (GPR) as compared with the normal condition for more safety. The grounding grid is a combination of inductance, resistance, and capacitance. This model is suitable for practical applications related to fault diagnosis. Several voltages on different positions of grounding grid are described in this paper using ATP-EMTP and genetic algorithm. The computer simulation shows that the proposed scheme is highly feasible and technically attractive.</P>