The electronic energy meter is also better protected against tampering than its mechanical predecessor, and units for prepaid operation e. An electricity meter, electric meter, electrical meter, or energy meter is a device that measures the amount of electric energy consumed by a residence, a business, or an electrically powered device. The energy is the total power consumed and utilised by the load at a particular interval of time. Implementation of a singlephase electronic watthour meter. The dme series energy meters can be integrated with. Presented here is a simple energy meter using analog devices ade7757 chip for singlephase, 2wire phase and neutral systems used in households. Prepaymentprepaid energy meter introduction and working.
In this project we are building a automated system by using arduino and gsm module. It is used in domestic and industrial ac circuit for measuring the power consumption. Electromechanical energy meters have been the standard for metering the electricity since billing began. Jul 02, 2018 block diagram, working principle and construction of digital multimeter in digital instruments video lecture of analog and digital instruments chapter in sub. Digital multimeter working principle analyse a meter. In september, 2009, a neighbor mentioned that our utility had just initiated an optin program that featured a new, digital meter and a timeofuse tou rate. Aug 30, 2017 as wireless energy meters become more common for homes in the u. Digital electronic energy meters digital signal processor or high performance microprocessors are used in digital electric meters. Features of digital multimeter digital multimeter is the most advanced instrument that makes use of modern integrated circuits for making electrical measurements. Pdf automatic energy meter reading using smart energy meter. Electricity meters are typically calibrated in billing units, the most common one being the kilowatt hour. Apr 17, 2014 energy meter an electricity meter or energy meter is a device that measures the amount of electric energy consumed by a residance,business or an electrically powered device.
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. This paper presents a single phase electrical energy meter based on a microcontroller from microchip technology inc. Whats the difference between an energy meter and a smart. Sep 03, 2017 analog meters also known as electromechanical are the most common, the simple meter spins forward when your using electricity. Jul 25, 2018 energy meters are the basic part to measure the power consumption. Thirdly, the user friendly display in the digital meters makes energy reading from time to time very easy. The watthour meter works on the induction principle. It is used everywhere, no matter how big or small consumption it is. The advantages of highly functional threephase meters for digital energy measurement have been demonstrated in north americas commercial and industrial. Mar 28, 2017 the function of recording or registering mechanism is to record continuously a number on the dial which is proportional to the revolutions made by the moving system. Indias most preferred load monitor for network reliability and consumption monitoring led display type.
But these are now being gradually replaced by electronic digital energy meters. Energy meter working principle and construction electronic. Secondly, the orientation problem associated with electromechanical energy meter is completely a nonissue in a digital energy meter. To understand why we must first look at the difference between an energy meter and a smart energy monitoring system like the new smappee plus, and see just how a smart energy monitoring system can improve peoples lives. Energy meter an electricity meter or energy meter is a device that measures the amount of electric energy consumed by a residance,business or an electrically powered device.
What is the working principle of energy meter answers. The idea of designing the digital household energy meter is due to the basis that it. Energy meter circuit detailed project with source code. Pdf it is undoubtedly that in the future, energy would cost more as the direct. This type of meter is already in use throughout victoria and is being rolled out in nsw, act, sa and qld. Digital multimeters are widely accepted worldwide as they have better accuracy levels and ranging from simple 3.
Innovative energy olutions digital energy meters by the millions. Energy meters are the basic part to measure the power consumption. You can recharge the electricity balance through this system, just by sending a sms. Calculate the number of revolutions made by it, when connected to a load carrying 40 a at 230v and 0. 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. Pdf the energy metering technology used presently in nigeria is not highly reliable and. A list of some manufacturers of electronic voltmeters, ammeters, and oscilloscopes is. Prepaid electricity energy meter is a good concept in which you can recharge its balance, like we do in our mobile phones. Dmk and dmg series digital multimeters since units. A second terminal block between the current transformer and the meter simplifies service work. What is the solution for the drawbacks of commonly used energy meters. This electronic meter does not possess any rotating parts, and the. Electronic meters measure energy using highly integrated components or other customized integrated circuits. By implementing the watthour meter, we can know how much amount of electrical energy is used by a consumer or a residence or an electrically powered.
Digital meters frequently asked questions origin energy. What are the advantages and disadvantages of usual energy meters. Electronic meters need for prepaid energy meter system. Jul 25, 2018 watthour meter is in fact a measuring device which can evaluate and records the electrical power passing through a circuit in a certain time. Several works on ami or smart metering leads to fig.
Digital meters, sometimes called smart meters or advanced meters, are devices that automatically record electric and water use, then electronically report that information to the utility company at regular intervals. Similar to the analog meters, voltage and current transducers are connected to a high resolution adc. Pdf electronic energy meter with remote monitoring and billing. The software supports calculation of various parameters for singlephaseenergy measurement. 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. While in digital electricity meter, percentage error could be as low as 0. The meter which is used for measuring the energy utilises by the electric load is known as the energy meter. Electric utilities use electric meters installed at customers premises for billing and monitoring purposes. The meter is provided with a field to which entries can be made for this purpose ct or vt factor. Digital energy meters by the millions analog devices. An electricity meter, electric meter, electrical meter, or energy meter is a device that measures the amount of electric energy consumed by a residence, a business, or. Electronic energy meter is based on digital micro technology dmt and uses no moving parts. Mar 27, 2016 there are basically 3 types of energy meters.
Handbook on electricity meters asiapacific economic cooperation. The working principle of an electronic energy meter is a device that measures the electronic energy consumed usually in kwh. This course on electricity meters is comprised of the following modules. To investigate firsthand these headlines and issues regarding the adoption of smart meter systems, i decided to conduct an experiment with my family. Working principle and construction of energy meter video lecture of measurement of capacitance chapter in subject electronic. Electrical energy meters principles and applications. All multimeters measure ac and dc voltage voltmeter, ac and dc current ammeter, and resistance ohmmeter. Pdf a single phase microcontroller based energy meter. In fact, it has been predicted that more than 10 million digital singlephase. The following is a basic explanation of how bidirectional metering works. Digital meters are introduced, as are types of voltmeters and ammeters operating on different techniques of analogto digital signal converters. Jun 30, 2018 working principle and construction of energy meter video lecture of measurement of capacitance chapter in subject electronic instrumentation and measurement for electrical, electronics, extc. A digital multimeter dmm is an instrument that can measure several basic electrical quantities and shows the measurement with a number in a display.
These meters provide secure data that can show peak usage and isolate outages. 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. A digital meter measures how much electricity youve used and when. If the analog meter is bidirectional it will spin backwards when your solar electric system is pushing extra electricity. The digital energy meter has recently passed the sevenyear mark and the study results are so promising that some utility boards have stopped purchasing electromechanical meters.
It is often incased in glass and has a disk that rotates that. This is all about types of energy meter and their working. Energy meter or watthour meter is an electrical instrument that measures the amount of electrical energy used by the consumers. Digital multimeter working principle electrical a2z. When the energy meter is connected in circuit, the current coil carries the load current and pressure coil carries the current proportional to the supply voltage. Sep, 2011 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. If a meter is used in combination with a current transformer. Here we discuss the construction and working principle of induction type energy meter. 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.
Working principle and construction of energy meter video lecture of measurement of capacitance chapter in subject electronic instrumentation. The meter sends this information back to your energy retailer remotely, so no one needs to visit your property to read the electricity meter. Digital multimeter block diagram, working principle. 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. When measurements are performed with upstream transformers, the displayed energy value must be multiplied by the transformation ratios. Bidirectional metering is available to customers who install renewable fuel generators such as solar, wind, hydro or biomass sources and operate the generator in parallel with their electric companys electrical system.