In a new fivestory apartment complex in a trendy charlotte neighborhood, residents are becoming smarter about their power use. Based on the flow of current, the ferriwheel rotates which. Pdf digital domestic meter for the measurement and billing of. Here we discuss the construction and working principle of induction type energy meter. A density meter, also known as a densimeter, is a device that measures the density. Different types of energy meters electrical concepts. Unesco eolss sample chapters electrical engineering vol. Energy meter is an integrating instrument which measures the total quantity of electrical energy supplied to the circuit in given period. An electric meter or energy meter is an essential device that goes with consumption of commercially distributed energy. In particular, conventional current flows into the positive terminal for an upscale meter deflection as shown in above figure.
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. An electronic energy meter eem functionally outperforms the traditional ferraris wheel meter. Whats the difference between an energy meter and a smart. Application example 082016 energy data acquisition with. The new smart meters installed at the complex in the plaza midwood area will enable residents to see how much power they use and when they use it, so they have more. The power companies benefits from eem in three significant ways. 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. The three phase meter is constructed by connecting the two single phase meter through the shaft. The electromechanical induction meter operates by counting the revolutions of an aluminium disc which is made to rotate at a speed proportional to the power.
These are capable of communicating in both directions. They induce energy which is oscillating between the electric and magnetic field of the capacitor and inductor respectively. Presented here is a simple energy meter using analog devices ade7757 chip for singlephase, 2wire phase and neutral systems used in households. Measured quantities rms values of voltages and currents. Moving system energy meter has a moveable aluminum disk in it which is mounted on a vertical shaft.
Apr 17, 2014 types of energy meters standard meters. Types of energy meters and their working principles. Ammeter definition and working principle electrical academia. Digital multifunction meters from ziegler instruments with multiple parameter measurement is world renowned in the power and energy sector. An electricity meter, electric meter, electrical meter, or energy meter is a device that measures.
Electronic energy meter is based on digital micro technology dmt and uses no moving parts. They can transmit the data to the utilities like energy consumption, parameter values, alarms, etc and also can receive information from utilities such as automatic meter reading system, reconnectdisconnect instructions, upgrading of meter softwares and other important messages. How electronic energy meter works mohans electronics blog. Working of single phase induction type energy meter the basic working of single phase induction type energy meter is only focused on two mechanisms. The electricity meter measures basic electric network parameters such as rms values of voltages and currents, powers, energy, power factor and net frequency. Prepaymentprepaid energy meter introduction and working. The trend of automation can be incorporated in presently working digital energy meter to make it smarter. It is used everywhere, no matter how big or small consumption it is. Ii electronic voltmeters and ammeters alessandro ferrero, halit eren encyclopedia of life support systems eolss figure 3.
Overview of single phase induction type energy meter. The software supports calculation of various parameters for singlephaseenergy measurement. The number of revolutions is thus proportional to the energy usage. Venturimeter principle, construction and working with diagram. One important advantage of eem is that in non linear loads, its metering is highly accurate and electronic measurement is more robust than that of the conventional mechanical meters. Digital multimeter working principle analyse a meter. 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. Electromechanical energy meters have been the standard for metering the electricity since billing began. Parkshot house, 5 kew road, richmond, tw9 2pr, united kingdom. 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. This is a microcontroller based wireless energy meter, as 8051 microcontroller is used for controlling the entire system. Pdf the energy metering technology used presently in nigeria is not highly.
A mechanical disk present inside the meter rotates when the load applied. Implementation of a singlephase electronic watthour. 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. To study the construction and working of single phase energy meter and to find out energy consumed in 30 minutes. Principles for the evolution of net energy metering. It is used in domestic and industrial ac circuit for measuring the power consumption. Implementation of a singlephase electronic watthour meter. Jun 24, 2016 the working of venturimeter is based on the principle of bernoullis equation. The total energy consists of pressure energy, kinetic energy and potential energy or datum energy.
It states that in a steady, ideal flow of an incompressible fluid, the total energy at any point of the fluid is constant. The electricity consumption meter shown in the figure facilitates the billing of energy meter along with load control using wireless gsm technology. All multimeters measure ac and dc voltage voltmeter, ac and dc current ammeter, and resistance ohmmeter. Digital energy meters digital energy meter manufacturer. The basic principle behind digital multimeters is the analog to digital converter because without this we are not able to convert the analog output into digital form. The most common and least sophisticated kind is an energy meter device or plug load that measures the energy usage of a single device, such as a lamp or a refrigerator. Wireless energy meter monitoring with automatic tariff. In the release condition, pulse output potential is equal to 0. Potential free pulse output for external energy totalization. The conventional mechanical energy meter is based on the phenomenon of magnetic induction. With comparing the digital metering systems to traditional metering system, the application structure and characteristics of digital metering system is discussed, the traceability model of the digital.
If one uses one kilowatt in onehour duration, one unit of energy gets consumed. The energy data is to be displayed graphically on the hmi. Energy meters are the basic part to measure the power consumption. The file may be stored either in the same directory as the mtr file meter file option or in a f ixed. Current rating for 3 phase disk type energy meter is normally up to 100 amps. Working principle and construction of energy meter video lecture of measurement of capacitance chapter in subject electronic. With the energy meter the energy data of a consumer is to be measured. Plug the meter into the wall socket, then plug the device you want to test into the meter, turn on the device and the meter will show how many watts that single device is using. The torque of the megger varies in a ration with vi, ohms law. 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.
Electronic energy meter industrial applications vishay. Mechanism of counting and displaying the amount of energy transferred. The resonance is the condition exists in the circuit when their inductance and capacitance reactance are of equal magnitude. Analysis of present state of the digital power meter field calibration. Oct 30, 2017 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. A single phase microcontroller based energy meter conference paper pdf available in conference record ieee instrumentation and measurement technology conference 2. In all induction meters we have two fluxes which are produced by two different alternating currents on a metallic disc. Find here online price details of companies selling digital energy meter. Electrical energy meters principles and applications. Electromechanical energy meters engineer experiences. Jul 25, 2018 energy meters are the basic part to measure the power consumption. The most common type is more properly known as a kilowatthour meter or a joule meter. The microchip web site microchip provides online support via our web site at this web.
Static energy meter is based on stateoftheart electronics technology. Based on the flow of current, the ferriwheel rotates which makes rotation of other wheels. 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. If the analog meter is bidirectional it will spin backwards when your solar electric system is pushing extra electricity. One single phase energy meter, one single phase load, stop watch and connecting wires. A wide variety of energy meter price options are available to you. A simple 3 phase disk type energy meter is present in the diagram below. Aug, 2006 an electric meter or energy meter is a device that measures the amount of electrical energy supplied to a residence or business. Finally, the principle of the software is the paced loop. Energy is the product of current and voltagein the case of 3 phase supply power factor must be considered.
Algorithms, electric energy measurement, electricity billing. The energy is the total power consumed and utilised by the load at a particular interval of time. This will be converted into corresponding measurements in the display section. Energy meter circuit detailed project with source code. Mcp3901 and pic18f65j90 energy meter reference design. Aug 30, 2017 the most common and least sophisticated kind is an energy meter device or plug load that measures the energy usage of a single device, such as a lamp or a refrigerator.
In the case of electronic energy meter different transducers are used to calculate i,v and p. 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. Induction type energy meter used invariably to measure the energy consumed in any a. Electronic meters need for prepaid energy meter system. Accurate energy measurement even in case of phase reversal andor the load is earthed. Here is the complete explanation of how an electric meter works. It involve four steps in its working driving force moving system breaking system registering system 7. 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. Meter is installed all electricity units are charged at the same rate 24 hours a day. Energy meter working principle and construction electronic. Principle wem monitors the energy consumption for a single phase supply.
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 electric utilities use electric meters installed at customers premises for billing and monitoring purposes. Digital power and energy meter with dsp tms320c6711. But these are now being gradually replaced by electronic digital energy meters. An electric meter or energy meter is a device that measures the amount of energy consumed by a residence, business, or an electrically. The basic unit of power is watts and it is measured by using a watt meter. When used in electricity retailing, the utilities record the values measured by these meters to generate an invoice for the electricity. 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. The working principle of an electronic energy meter is a device that measures the electronic energy consumed usually in kwh.
Find details of companies offering digital energy meter at best price. The rotation of this disk is base of energy measurement 8. Research on the digital metering system and verification. T he digital household energy meter had been configured as the view er of the.
Microcontroller based wireless energy meter working. Wireless energy meter monitoring with automatic tariff calculation the purpose of this project is to remote monitoring and control of the digital energy meter. The dial of the disk meter shows only kwh usage since the time of energy meter installation. A 3phase energy meter has same elements as in case of a singlephase energy meter. Idea is to design and implement a smart prepaid energy meter prototype having wireless. Implementation of a singlephase electronic watthour meter using msp430afe2xx rev. Principles for the evolution of net energy metering and rate design share this document provides a consensus view of solar advocates for regulators and stakeholders considering rate design and compensation for distributed solar generation, including potential alternatives to net energy metering.
The total energy is the sum of the reading of both the elements. Digital multimeter working principle electrical a2z. As their name suggest, electromechanical energy meters are the combination of mechanical and electrical technology. An energy meter is used to measure the energy consumed in the kilowatt hours.
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. Digital multimeter working a digital multimeter dmm is an instrument that can measure several basic electrical quantities and shows the measurement with a number in a display. A wide variety of digital energy meters options are available to you, such as digital only, analog and digital. Pdf a single phase microcontroller based energy meter. Adis ade energy measurement ics combine analogtodigital converters with fixedfunction digital signal processors to perform critical measurements, while. The meter which is used for measuring the energy utilises by the electric load is known as the energy meter. 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. Mar 28, 2017 induction type instruments are used for a. The energy data is to be acyclically queried, evaluated and archived with a s71200. The em 3490ss is available in two version 3phase 4 wire 3 wire unbalanced load and single phase and is ideal for secondary metering in. The deflection torque is produced with megger tester due to the magnetic field produced by voltage and current, similarly like ohms law. The meter which is used for measuring the power of three phase supply is known as the three phase energy meter. It is often incased in glass and has a disk that rotates that. This system enables the electricity department to read the meter readings regularly without the person visiting inside each house.
An electric meter or energy meter is a device that measures the amount of electrical energy supplied to a residence or business. Meter 3490 ss is a 96mm x 96mm panel mounted kilowatt hour meter it measures active energy with class 1. It has a rotating aluminium wheel called ferriwheel and many toothed wheels. Mechanism of rotation of an aluminum disc which is made to rotate at a speed proportional to the power. Digital voltmeter is the basic instrument used for measurement of voltage through the use of analog to digital converter. Jul 25, 2018 work philosophy based on ohm meter or ratio meter. The digital energy metering system applied in the smart substation are quite different from the traditional meter system, so its nessary to do some research on the digital metering system. There are several adc available in the market, but we.
So energy meters measure the rapid voltage and currents, calculate their product and give instantaneous power. 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. What is the working principle of energy meter answers. The electronic energy meter is also better protected against tampering than its mechanical predecessor, and units for prepaid operation e. Design and implementation of wireless energy meter system. The ac kilowatt hour meters used at present operate on the same principle as blathys original. Due to alternating fluxes there is an induced emf, the emf produced at one. Your new smart meter will give you more control duke. Voltmeter working principle if an ammeter is of dc type, then it has polarity signs on it for ensuring appropriate connection for an upscale indication. It consumes a small amount of power, typically around 2 watts. This is used in each and every house and industry for calculating the energy consumed by them. 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.