Working of single phase induction type energy meter the basic working of single phase induction type energy meter is only focused on two mechanisms. Unesco eolss sample chapters electrical engineering vol. Electrical energy meters principles and applications. Find details of companies offering digital energy meter at best price. Principle wem monitors the energy consumption for a single phase supply. This is a microcontroller based wireless energy meter, as 8051 microcontroller is used for controlling the entire system. Rs485 bus two way threephase energy meter dsz14wdrs3x5a mid. Based on the flow of current, the ferriwheel rotates which. Energy meter working principle and construction electronic. Magnetic flow meters works based on faradays law of electromagnetic induction. The electronic energy meter is also better protected against tampering than its mechanical predecessor, and units for prepaid operation e. Overview of single phase induction type energy meter. 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. They are typically calibrated in billing units, the most common one being the kilowatt.
Some meters measured only the length of time for which charge flowed, with no measurement of the magnitude of voltage or current. Presented here is a simple energy meter using analog devices ade7757 chip for singlephase, 2wire phase and neutral systems used in households. A multimeter ora multitester, also known as a voltohm meter or vom is, an. Aug, 2006 an electric meter or energy meter is a device that measures the amount of electrical energy supplied to a residence or business. 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 the industrial world. Jul 25, 2018 energy meters are the basic part to measure the power consumption. A simple 3 phase disk type energy meter is present in the diagram below. 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. The meter is provided with a field to which entries can be made for this purpose ct or vt factor.
As shown in the above figure, the wattmeter has two sets of coils. The file may be stored either in the same directory as the mtr file meter file option or in a f ixed. Principles for the evolution of net energy metering. As in the block diagram, the meter has a power supply, a metering engine, a processing and communication engine i. Electromechanical energy meters have been the standard for metering the electricity since billing began. The three phase energy meter has two discs mounted on the common shaft. Energy meters are the basic part to measure the power consumption. How electronic energy meter works mohans electronics blog.
Electronic energy meter industrial applications vishay. After calibrating voltage, the meter can be calibrated in terms of ohms. It is used everywhere, no matter how big or small consumption it is. 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. This will be converted into corresponding measurements in the display section. The dynamometer wattmeter works on the motor principle. The advantages of highly functional threephase meters for digital energy measurement have been demonstrated in north americas commercial and industrial. 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. It has a rotating aluminium wheel called ferriwheel and many toothed wheels. 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.
Digital multimeter working principle analyse a meter. Ii electronic voltmeters and ammeters alessandro ferrero, halit eren encyclopedia of life support systems eolss figure 3. It is used in domestic and industrial ac circuit for measuring the power consumption. Energy meter or watthour meter is an electrical instrument that measures the amount of electrical energy used by the consumers. 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. The torque of both the elements is added mechanically, and the total rotation of the shaft is proportional to the three phase energy consumption. Pdf a single phase microcontroller based energy meter. 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.
T he digital household energy meter had been configured as the view er of the. Pdf the energy metering technology used presently in nigeria is not highly. Measuring principle kem manufactures digital density meters based on the oscillating utube technique. The sample to be measured is filled into a ushaped tube which is induced to vibrate. Electronic energy meter is based on digital micro technology dmt and uses no moving parts. Here we discuss the construction and working principle of induction type energy meter. Vibrating tube densitometers working principle one of the many parameters that must be accurately measured for product quality control, custody transfer, process control, or liquid interface detection purposes is liquid density. This power is integrated over a period which gives the energy utilized over that time period. So, electronic type of threephase energy meter is explained below with its working principle. 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. Energy meter circuit detailed project with source code. The energy meter is an electrical measuring device, which is used to record electrical energy consumed over a specified period of time in terms of units. These meters measure the instantaneous voltage and currents, calculate its product and gives instantaneous power.
The digital signals are then processed using a dsp or a microcontroller, which then displays the amount of energy consumed on a lcd or a led display. Implementation of a singlephase electronic watthour. 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. Types of energy meters and their working principles. Low digital cost energy meter with energy 100 unit. Based on the flow of current, the ferriwheel rotates which makes rotation of other wheels.
As shown in the block diagram, in a typical digital multimeter the input signal i. C a t 0 4 0 7 121, asaf ali road, new delhi 110 002 ph. 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. This section describes the hardware that is required for an energy meter using the msp430afe2xx. Prepaymentprepaid energy meter introduction and working. Both the current and the potential are used to calculate the conductance iv. In the case of electronic energy meter different transducers are used to calculate i,v and p. 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. Implementation of a singlephase electronic watthour meter using msp430afe2xx rev.
Prok dvs make digital microcontroller kilowatt hour meterkwhenergy meter. 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 conductivity meter a typical conductivity meter applies an alternating current i at an optimal frequency1 to two active electrodes and measures the potential v. Therefore, this type of meter is also called an integrating meter. The electricity consumption meter shown in the figure facilitates the billing of energy meter along with load control using wireless gsm technology. Electronic meters need for prepaid energy meter system. When measurements are performed with upstream transformers, the displayed energy value must be multiplied by the transformation ratios. 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. What is the solution for the drawbacks of commonly used energy meters. The meter which is used for measuring the power of three phase supply is known as the three phase energy meter. These two meanings exemplify the dynamic character of energy.
It consists of two elliptical gears meshed together and fluid forces thi. The eigenfrequency of the oscillation of the utube is influenced by the mass and therefore by the density of the sample. Digital energy meters by the millions analog devices. The three phase meter is constructed by connecting the two single phase meter through the shaft.
Mechanism of rotation of an aluminum disc which is made to rotate at a speed proportional to the power. Design and implementation of wireless energy meter system for. Energy is the product of current and voltagein the case of 3 phase supply power factor must be considered. Detailed information and tools for energy meter interfaces can be. When used in electricity retailing, the utilities record the values measured by these meters to generate an invoice for the electricity.
Market potential every house, small factory, business establishment, shops, offices etc. This application report has the complete metrology source code. Analysis of present state of the digital power meter field calibration. In all induction meters, we have two fluxes which are produced by two different alternating currents on a metallic disc. The dial of the disk meter shows only kwh usage since the time of energy meter installation. Nov 29, 2014 the traditional form of wattmeter is called as dynamometer wattmeter. What is the working principle of digital fuel flow 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. The meter which is used for measuring the energy utilises by the electric load is known as the energy meter. Due to alternating fluxes there is an induced emf, the emf produced at one.
Power and energy measurements encyclopedia of life. In all induction meters we have two fluxes which are produced by two different alternating currents on a metallic disc. The basic principle of induction type energy meter is electromagnetic induction. A second terminal block between the current transformer and the meter simplifies service work. Microcontroller based wireless energy meter working. The total energy is the sum of the reading of both the elements. The energy is the total power consumed and utilised by the load at a particular interval of time. Meter is installed all electricity units are charged at the same rate 24 hours a day. A single phase microcontroller based energy meter conference paper pdf available in conference record ieee instrumentation and measurement technology conference 2. 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 are the advantages and disadvantages of usual energy meters.
An electric meter or energy meter is an essential device that goes with consumption of commercially distributed energy. Digital power and energy meter with dsp tms320c6711. 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. This device is available in a purely electronic form too which is known as digital wattmeter. Finally, the principle of the software is the paced loop. According to this principle, when a conductive medium passes through a magnetic field b, a voltage e is generated which is proportional to the velocity v of the medium, the density of the magnetic field and the length of the conductor. In addition, consideration must be given to the effect on customers of the lack of energy hedging customergenerated solar energy does not offset the customers utilitysupplied energy. The conventional mechanical energy meter is based on the phenomenon of magnetic induction.
Compared with the traditional electric energy meter, working principle and interface mode of digital electric energy meter have been changed fundamentally. For example, the derivative of energy, e, versus any spatial variable, x, distance or angle. Mechanism of counting and displaying the amount of energy transferred. 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. If a meter is used in combination with a current transformer. It enables systematic pricing of energy consumed by individual consumer as it measures the amount of electrical energy consumed by a residence, business, or. Mar 28, 2017 the dial of the disk meter shows only kwh usage since the time of energy meter installation. Electronic meters consists of current and voltage sensors which sense the amount of current and voltage consumed and this analog signal is sampled and digitized using adcs. Threephase and singlephase energy meters, highquality pdf. Principle of magnetic flow meter based on faradays law. 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. Implementation of a singlephase electronic watthour meter. The traditional form of wattmeter is called as dynamometer wattmeter.