scholarly journals Rogowski Coils for Design of Energy Meters for Nigeria Power Market

2020 ◽  
Vol 5 (6) ◽  
pp. 626-631
Author(s):  
John Paul I. Iloh
Keyword(s):  
Electricity Consumption ◽  
Power Market ◽  
Experimental Tests ◽  
Rogowski Coil ◽  
Core Material ◽  
Sensing Element ◽  
Current Sensing ◽  
Billing System ◽  
Energy Meter ◽  
Rogowski Coils

Proper metering of electricity consumption is the optimal way for effectively recovering revenues for power supplied to the consumers by the distribution companies (DISCOs). In Nigeria, the situation is quite problematic due to inadequate metering of the consumers. As a result, huge amount of revenues due to the DISCOs are left uncollected leaving the DISCOs to resort to estimated billing system. To solve this problem, this paper proposes a locally made digital energy meter built from locally available materials in Nigeria. Specifically, this work proposes to use an inexpensive rogowski coil wound from made-in-Nigeria wire on an improvised air core material as the current sensing element to be used in the meter. Two rogowski coil samples wound from SWG 36 and SWG 25 wires having resistances of 50ohm and 1.3 Ohms respectively were subjected to repeated experimental tests in order to study their characteristic behavior under varying load current scenarios. The results obtained were used to characterize the coils behaviors by using the basic fitting tool in MATLAB graphing window to generate the optimal equation representing the coils’ behaviors.  The equations so obtained are intended to be used to program the microcontroller for implementation of the Digital Energy Meter algorithm adopted in the proposed design. Results from the experiment showed that the coil with lower resistance exhibited better linear response while the coil with higher resistance was better optimized by quadratic and cubic polynomials. These findings serve as design guide for local fabrication of the rogowski coils to be used in the proposed digital energy meter being developed for the Nigerian power market.

scholarly journals Smart Characterization of Rogowski Coils by Using a Synthetized Signal

Sensors ◽  
2020 ◽  
Vol 20 (12) ◽  
pp. 3359 ◽  
Author(s):  
Alessandro Mingotti ◽  
Lorenzo Peretto ◽  
Roberto Tinarelli
Keyword(s):  
Low Power ◽  
Distribution System ◽  
Network Models ◽  
Experimental Tests ◽  
Current Transformer ◽  
Rogowski Coil ◽  
Sufficient Information ◽  
Instrument Transformers ◽  
Rogowski Coils ◽  
Characterization Procedure

With the spread of new Low-Power Instrument Transformers (LPITs), it is fundamental to provide models and characterization procedures to estimate and even predict the LPITs’ behavior. In fact, distribution system operators and designers of network models are looking for all forms of information which may help the management and the control of power networks. For this purpose, the paper wants to contribute to the scientific community presenting a smart characterization procedure which easily provides sufficient information to predict the output signal of a Low-Power Current Transformer (LPCT), the Rogowski coil. The presented procedure is based on a synthetized signal applied to the Rogowski coil. Afterwards, the validity of the procedure is assessed within the Matlab environment and then by applying it on three off-the-shelf Rogowski coils. Simulations and experimental tests and results involving a variety of distorted signals in the power quality frequency range and by adopting a quite simple measurement setup demonstrated the effectiveness and the capability of the procedure to correctly estimate the output of the tested device.

Analysis and Research of Rogowski Coil Current Sensing Technology

2014 ◽  
Vol 599-601 ◽  
pp. 819-822 ◽  
Author(s):  
Yong Zhen Gong ◽  
Hui Liao
Keyword(s):  
Power System ◽  
High Precision ◽  
Rogowski Coil ◽  
Measuring System ◽  
Coil Current ◽  
Current Sensing ◽  
Sensing Technology ◽  
Working Principle ◽  
Rogowski Coils ◽  
Higher Sensitivity

The paper introduces the working principle of Rogowski coil and characteristics of various Rogowski coils, Summing up the productionl principle of high precision coil. The measuring system which is composed of PCB Rogowski coils and integrator are designed by optimizing coil parameters,and the simulation of system is analyzed.The result shows that the system has higher sensitivity and good frequency characteristics, and can meet the requirement of measurement in power system.

scholarly journals A GSM Based Automatic Energy Meter Reading and Billing System

2020 ◽  
Vol 5 (6) ◽  
pp. 725-730
Author(s):  
Mohammad Golam Mortuza ◽  
Zia Uddin Ahmed ◽  
Hassan Jaki ◽  
Md. Razu Ahmed ◽  
Mohammed Jashim Uddin ◽  
...  
Keyword(s):  
Developing Country ◽  
Human Life ◽  
Electricity Consumption ◽  
Billing System ◽  
Energy Meter ◽  
Check Electricity ◽  
Country People

These instructions give you guidelines for preparing papers for An existence without electricity can't be thought of since it turns into an integral part of human life. In a developing country, people use postpaid electricity for their own purposes. Be that as it may, they don't know the amount of electricity they have consumed and how much cost they have done likewise till they receive the consumption bill at the end of the month. Also, in prepaid meters, to see consumption details, people have to go in front of the meter. In this research, a system has been designed based on GSM technology to solve this problem. The prepaid meter has to be recharged; as a result, clients can use the electricity. The system alerts the client for any kind of emergency. Besides, when the client is away from the house, he can easily switch off the supply of electricity by sending an SMS. This project will support both society and country because it helps to reduce the wastage of electricity and to check electricity consumption and bill from remote distances.

scholarly journals Smart Run Time Electricity Bill Calculation using LabVIEW

2020 ◽  
Vol 9 (5) ◽  
pp. 783-786
Keyword(s):  
Power Factor ◽  
Electricity Consumption ◽  
Electrical Energy ◽  
Current Frequency ◽  
Labview Software ◽  
Billing System ◽  
Energy Meter ◽  
Power Factor Unity ◽  
Tariff Structure ◽  
Skilled Person

Usage of Electricity is gradually increasing in day-to-day life. Normally Electrical energy consumed in homes and Industries are measured using the energy meter. In the growing technology, the methodology of measuring the energy and bill calculation should be in a smarter way. The traditional method of billing system using the energy meter needs skilled person to calculate the energy and for the billing. In this paper it is proposed a smart way to measure energy using LabVIEW software for the real time energy measurement. Also, it is possible to measure the following parameters- Power factor, KWH, Voltage, Current, Frequency and Bill amount as on date. LabVIEW system integrated with DAQ hardware to measure the voltage and current. The developed system calculates electricity consumption according to the power factor (unity, leading and lagging) and generates the bill under multi-tariff structure.

scholarly journals An Effective Method of Modeling the Deformation Behavior of Polymer Sandwich Structures with Adhesive Joints

2021 ◽  
Author(s):  
László Takács ◽  
Ferenc Szabó
Keyword(s):  
Deformation Behavior ◽  
Sandwich Structures ◽  
Experimental Tests ◽  
Mechanical Tests ◽  
Adhesive Joints ◽  
Core Material ◽  
Full Vehicle ◽  
Novel Approach ◽  
Stiffness Matrices ◽  
Layered Shells

AbstractPolymer sandwich structures have high bending stiffness and strength and also low weight. Therefore, they are widely used in the transportation industry. In the conceptual design phase, it is essential to have a method to model the mechanical behavior of the sandwich and its adhesive joints accurately in full-vehicle scale to investigate different structure partitioning strategies. In this paper, a novel approach using finite element modeling is introduced. The sandwich panels are modeled with layered shells and the joint lines with general stiffness matrices. Stiffness parameters of the face-sheets and the core material are obtained via mechanical tests. Stiffness parameters of the joints are determined by using the method of Design of Experiments, where detailed sub-models of the joints serve as a reference. These models are validated with experimental tests of glass-fiber reinforced vinyl ester matrix composite sandwich structure with a foam core. By using two joint designs and three reference geometries, it is shown that the method is suitable to describe the deformation behavior in a full-vehicle scale with sufficient accuracy.

Smart Energy Meter Reading and Billing System using GSM Modem

2021 ◽  
Vol 9 (VII) ◽  
pp. 2511-2516
Author(s):  
Tsapalasetty Arjun
Keyword(s):  
Energy Consumption ◽  
Short Message Service ◽  
Short Message ◽  
Billing System ◽  
Energy Meter ◽  
Electricity Bill ◽  
Alert Message ◽  
Message Service ◽  
Reading System

In this paper we are focusing on automatic billing and metering, The GSM Short Message Service (SMS) and Arduino connection gives the metre reading system several predefined automatic capabilities.The energy consumption and electricity bill and loads will be providing through GSM module to the customer and to the concern electricity department. An alert message will be send to the customer and vigilance squad when the consumption unit reading reaches beyond the specific threshold. And loads on and off through gsm This paper contains energy consumption details in terms of power units and power units will be displayed on the LCD and will be notified to the customer via SMS and customer will also be able to recharge with the help of GSM module as well as microcontroller.

scholarly journals The role of magnetic sensors in the hybridisation and electrification of vehicles

2019 ◽  
Author(s):  
Marc Kramb ◽  
Rolf Slatter
Keyword(s):  
Power Electronics ◽  
Causal Chain ◽  
Rogowski Coil ◽  
Magnetic Sensors ◽  
Current Sensor ◽  
Electrical Currents ◽  
Limited Bandwidth ◽  
Switching Losses ◽  
Current Sensors ◽  
Rogowski Coils

Electrical currents need to be measured in a wide variety of different applications in the field of power electronics. However, the requirements for these measurement devices are becoming steadily more demanding regarding accuracy, size and especially bandwidth. In order to increase the power density of power electronics, as particularly important in the field of electromobility, there is a clear causal chain. Soft switching leads to higher efficiency and higher frequencies, which enable smaller dimensions for a given power output. Higher switching frequencies allow the size of magnetic components to be reduced significantly, resulting in more compact and lighter designs. This trend is now being reinforced by use of new wide bandgap semiconductor materials like silicon carbide (SiC) and gallium nitride (GaN), as their low on-resistances and low parasitic capacitances reduce switching losses. Conventional current sensor solutions, e.g. hallor shunt based sensors exhibit a limited bandwidth, typically less than 250 kHz. Other current sensors, like those based on the Rogowski-Coil, are capable of highly dynamic current measurement, but are significantly more expensive, larger and hence not suitable for large series applications. Furthermore, Rogowski-Coils are only capable of measuring alternating currents (AC), which prevents their use in applications where DC currents must also be measured. In order to meet the above mentioned requirements, magnetoresistive (MR) current sensors are ideally suited due to the fact that the bandwidth of the magnetoresistive effect extends up into the GHz-range. This paper describes the principle of operation and main performance characteristics of highly integrated MR current sensors and describes their benefits compared to other types of current sensor, in particular with regard to applications in the hybridisation and electrification of vehicles.

Design and Analysis of PCB Rogowski Coil Current Transformer

2014 ◽  
Vol 672-674 ◽  
pp. 984-988
Author(s):  
Biao Su ◽  
Li Xue Li ◽  
Yi Hui Zheng ◽  
Xin Wang ◽  
Yan Liu ◽  
...  
Keyword(s):  
Power System ◽  
High Sensitivity ◽  
Current Transformer ◽  
Rogowski Coil ◽  
Electromagnetic Current ◽  
Current Transformers ◽  
Coil Current ◽  
Electronic Current ◽  
Rogowski Coils ◽  
Electronic Current Transformers

Electronic current transformers are more suitable for the development of power system compared with traditional electromagnetic current transformers. Rogowski coil current transformer is one of three electric current transformers. According to the measurement principle of Rogowski coils, the equivalent circuit of PCB Rogowski coils is analyzed. By using four PCB Rogowski coils combined, a PCB Rogowski coil current transformer is designed and tested. The results show that the designed PCB Rogowski coil transformer has good linearity and high sensitivity and measurement accuracy and it can meet the requirement of power system.

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