Working principle and construction of energy meter video lecture of measurement of capacitance chapter in subject electronic. Features for modular smart meter flexibility to cope with a change in the communication media. Lowpower avr microcontroller allows operation down to 1. The file may be stored either in the same directory as the mtr file meter file option or in a f ixed. The conventional mechanical energy meter is based on the phenomenon of magnetic induction. Energy meter or watthour meter is an electrical instrument that measures the amount of electrical energy used by the consumers. The meter which is used for measuring the energy utilises by the electric load is known as the energy meter. Prepaymentprepaid energy meter introduction and working. Electric meter developers often prefer to separate the energy measurement function from the host processor. As in the block diagram, the meter has a power supply, a metering engine, a processing and communication engine i. Energy is the product of current and voltagein the case of 3 phase supply power factor must be considered. Low power avr microcontroller allows operation down to 1. The energy is the total power consumed and utilised.
The aim of this project is to design a sample meter can accurately display real voltage, current, power and energy used during one day. Design and assemble of low cost prepaid smart card energy. Sometimes the energy meter is placed in a location where it is not easily accessible. An994 iec compliant activeenergy meter design using the mcp3905a06a ds00994 this application note documents the design decisions associated with using the mcp390x devices for energy meter design and iec compliance.
Single phase energy meter theory pdf download mastercard. This meter helps you conserve electricity by showing your usage and costs as you use it. How electronic energy meter works mohans electronics blog. Apr 17, 2014 types of energy meters standard meters.
A simple 3 phase disk type energy meter is present in the diagram below. Utilities are one of the electrical departments, which install these instruments at every place like homes, industries, organizations, commercial buildings to charge for the electricity consumption by loads such as lights, fans, refrigerator, and other home appliances. Electronic meters consist of current and voltage sensors that sense the amount of current and voltage consumed and this analog signal is sampled and digitized using adcs. Design and implementation of wireless energy meter system for. Wireless energy monitor for smart meters jaycar electronics. The three phase meter is constructed by connecting the two single phase meter through the shaft.
To study the construction and working of single phase energy meter and to find out energy consumed in 30 minutes. What is the working principle of digital fuel flow meter. Aug 10, 2010 an electric meter or energy meter is a device that measures the amount of electrical energy supplied to or produced by a residence, business or machine. A single phase microcontroller based energy meter conference paper pdf available in conference record ieee instrumentation and measurement technology conference 2. Laki energiamarkkinoilla toimivien yritysten energiatehokkuuspalveluista. The principle of working and construction of induction type meter is very simple and easy to understand thats why these are widely used in measuring energy in domestic as well as industrial world. Unesco eolss sample chapters electrical engineering vol. Aug, 2006 an electric meter or energy meter is a device that measures the amount of electrical energy supplied to a residence or business.
An electricity meter, electric meter, or energy meter is a device that measures the amount of electric energy consumed by a residence, business, or an electrically. The torque of both the elements is added mechanically, and the total rotation of the shaft is proportional to the three phase energy consumption. The dial of the disk meter shows only kwh usage since the time of energy meter installation. Mar 28, 2017 the dial of the disk meter shows only kwh usage since the time of energy meter installation. The detailed functionality of the ade7757 is explained in the theory of operation section of the. Implementation of a singlephase electronic watthour meter. Static energy meter is based on stateoftheart electronics technology. The three phase energy meter has two discs mounted on the common shaft.
So the eem is known as static energy meter in eem the accurate functioning is controlled by a specially designed ic called asic application specified integrated circuit. Based on the flow of current, the ferriwheel rotates which makes rotation of other wheels. But these are now being gradually replaced by electronic digital energy meters. What is the solution for the drawbacks of commonly used energy meters.
Design and assemble of low cost prepaid smart card energy meter a novel design sudarshan k. This application report has the complete metrology source code. Design easily downgrades to fit normal singlephase energy metering. Utilities are one of the electrical departments, which install these instruments at every place like homes, industries, organizations, commercial buildings to charge for the electricity consumption by loads such as. The total energy is the sum of the reading of both the elements.
Working principle of digital fuel flow meter it is an accumulated meter which requires fuel to displace the components mechanically in the meter for measuring the flow rate. Design and implementation of wireless energy meter system. A sinking tilt current is similar, but the housing is designed such that the. In all induction meters we have two fluxes which are produced by two different alternating currents on a metallic disc. Electronic energy meter industrial applications vishay. Tilt current meters operate under the dragtilt principle and are designed to either float or sink depending on the type. An electric meter or energy meter is an essential device that goes with consumption of commercially distributed energy. If a meter is used in combination with a current transformer.
Meter aggregation and virtual net metering meter aggregation a renewable energy project can offset the electricity load of a customer with multiple meters o example. The energy is the total power consumed and utilised by the load at a particular interval of time. Microcontroller based wireless energy meter working. Electromechanical type the electromechanical induction meter operates by counting the revolutions of a non magnetic, but electrically conductive, metal disc which is made to rotate at a speed pro. Electronic energy meter is based on digital micro technology dmt and uses no moving parts. Finally, the principle of the software is the paced loop. It enables systematic pricing of energy consumed by individual consumer as it measures the amount of electrical energy consumed by a residence, business, or.
Energy metering emetering making sense of smart meter data key features about nec asia pacific. It consists of two elliptical gears meshed together and fluid forces thi. Ii electronic voltmeters and ammeters alessandro ferrero, halit eren encyclopedia of life support systems eolss figure 3. Working of single phase induction type energy meter the basic working of single phase induction type energy meter is only focused on two mechanisms.
Select the help menu, and then topics to open a list of available online help files. Principle wem monitors the energy consumption for a single phase supply. Valluru department of electrical engineering, delhi technological university formerly delhi college of engineering bawana road, delhi110042, india. Measuring principle kem manufactures digital density meters based on the oscillating utube technique. The signal waveform whose frequency is to be measured is converted into tngger pulses and applied continuously to one terminal of an and gate. One single phase energy meter, one single phase load, stop watch and connecting wires. The microchip web site microchip provides online support via our web site at this web. A wide variety of digital energy meters options are available to you, such as digital only, analog and digital. The analog electronic voltmeters and ammeters in the form of dc, rectifierbased ac, and true rms. Due to alternating fluxes there is an induced emf, the emf produced at one. A9mem3155 iem3155 energy meter 63 a modbus 1 digital i 1 digital o multitariff mid.
Specifically, elements of hardware included the power supply, interface circuit, suitable launch pad with microcontroller. A solar project at a federal site offsets the loads of buildings that are separately metered virtual net meteringgroup billing multiple customers. An electric meter or energy meter is a device that measures the amount of electrical energy supplied to or produced by a residence, business or machine. A highperformance measurement solution for intelligent energy management in pv systems with sma devices. A9mem3155 iem3155 energy meter 63 a modbus 1 digital i 1. What is the differance between digital energy meter. Electrical energy meters principles and applications. Program the meter with your electricity bills to estimate the usage cost. To understand the electricity metering theory, here are some definitions of basic.
This is a microcontroller based wireless energy meter, as 8051 microcontroller is used for controlling the entire system. It is used everywhere, no matter how big or small consumption it is. Symbol of power meter the traditional analog wattmeter is an electrodynamics instrument. Accurate energy measurement even in case of phase reversal andor the load is earthed. When alternating current flow though two suitably located coils produces rotating magnetic field which is cut by the metallic disc suspended near to the coils thus emf induce in the disc which is circulates eddy current in it. It is used in domestic and industrial ac circuit for measuring the power consumption. The digital signals are then processed using a dsp or a microcontroller, which then displays the amount of energy consumed on an lcd or a led display. The eigenfrequency of the oscillation of the utube is influenced by the mass and therefore by the density of the sample. Human operator billing method is prone to erroneous. To the other terminal of the gate, a pulse of 1 sec is applied as shown in the fig. Energy meter circuit detailed project with source code. Mcp3901 and pic18f65j90 energy meter reference design.
Mechanism of counting and displaying the amount of energy transferred. The sample to be measured is filled into a ushaped tube which is induced to vibrate. Some information is given on oscilloscopes as one of the important voltage measuring devices, although they are generally not classified as voltmeters or ammeters. An electricity meter, electric meter, electrical meter, or energy meter is a device that measures. Singlephase electric meter with isolated energy measurement. Energy meter is an instrument which measures electrical energy. Electromechanical energy meters have been the standard for metering the electricity since billing began. The basic principle of induction type energy meter is electromagnetic induction. When used in electricity retailing, the utilities record the values measured by these meters to generate an invoice for the electricity.
Rectifierbased ac analog voltmeter because of the high input impedance of the electronic amplifier, i2t 0, and hence current imt flowing through the milliammeter, a also flows through the load. What are the advantages and disadvantages of usual energy meters. Mcp3901 and pic18f65j90 energy meter reference design users. Mcp3901 and pic18f65j90 energy meter reference design users guide. Current rating for 3 phase disk type energy meter is normally up to 100 amps. Pdf a single phase microcontroller based energy meter. T he digital household energy meter had been configured as the view er of the. In this article, modern electronic voltmeters and ammeters are discussed. Use the historical records and bar chart analysis to find out how much energy and money you can save. Act on the energy efficiency services of companies operating in the energy market 10. Electromechanical type the electromechanical induction meter operates by counting the revolutions of a nonmagnetic, but electrically conductive, metal disc which is made to rotate at a speed pro. It enables systematic pricing of energy consumed by individual consumer as it measures the amount of electrical energy consumed by a residence, business, or an electrically powered device 1. The key parameters calculated during energy measurements are root mean square rms current and voltage, active and reactive power and energy, power factor, and frequency.
Types of energy meters and their working principles. By closing this banner, scrolling this page, clicking a link or continuing to browse otherwise, you agree to the use of cookies. The conventional method of electricity billing involves a person from the distribution unit reading the number of units of electricity consumed in the energy meter, conveying this information to the distribution unit, and then preparing the bill according to the units consumed for a fixed amount of time. The meter which is used for measuring the power of three phase supply is known as the three phase energy meter. A floating tilt current meter typically consists of a subsurface buoyant housing that is anchored to the sea floor with a flexible line or tether. Meter is installed all electricity units are charged at the same rate 24 hours a day. In the case of electronic energy meter different transducers are used to calculate i,v and p. Implementation of a singlephase electronic watthour meter using msp430afe2xx rev. Power and energy measurements encyclopedia of life.
When the voltage of 120% of rated voltage is applied with no current flowing in the circuit, the test output of the meter shall not produce more than one pulsecount. It has a rotating aluminium wheel called ferriwheel and many toothed wheels. Jul 25, 2018 energy meters are the basic part to measure the power consumption. Electronic meters need for prepaid energy meter system. The ac kilowatt hour meters used at present operate on the same principle as blathys.
Energy is a word that comes from the ancient greek energeia, which means both action and energy. The communication unit can be removed and inserted seamlessly without disrupting the metering process. Generally, one electronic energy meter consists of hardware and software. In conclusion, hardware and software were designed to deal with the problem of the current waveform and accurately display real voltage, current, power and energy used in one day. The number of pulses counted at the output terminal during. Mechanism of rotation of an aluminum disc which is made to rotate at a speed proportional to the power.
An electric meter or energy meter an electric meter or energy meter is a device that measures the amount of electrical energy supplied to or produced by a residence, business or machine electromechanical meters ac voltage load indicator voltage coil current coil al dial permanent magnet i. Overview of single phase induction type energy meter. Jul 25, 2018 the principle of working and construction of induction type meter is very simple and easy to understand thats why these are widely used in measuring energy in domestic as well as industrial world. A standard meter is a basic electromechanical induction meter measures electricity consumption in terms of kilowatthours the amount of energy used by a load of one kilowatt over the period of one hour. The electricity consumption meter shown in the figure facilitates the billing of energy meter along with load control using wireless gsm technology. The most common type is more properly known as a kilowatthour meter or a joule meter. Here we discuss the construction and working principle of induction type energy meter. Energy meter working principle and construction electronic. Tm energy meter types and measurements electromechanical meters limited accuracy manual reading contains moving parts aluminum ring electronic meters mcus, dsps and asics based accurate measurement enhanced security equipped with amr no moving parts electricity meter types single phase common in eu residential meters one voltage and one current measurement. For example, the derivative of energy, e, versus any spatial variable, x, distance or angle. Implementation of a singlephase electronic watthour. Drm121, mqxenabled mcf51em256 singlephase electricity meter.
Energy metering emetering making sense of smart meter data. Therefore, this type of meter is also called an integrating meter. The electronic energy meter is also better protected against tampering than its mechanical predecessor, and units for prepaid operation e. Reading of energy meter based on image processing technology. The software supports calculation of various parameters for singlephaseenergy measurement.
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