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. Electromechanical induction type meter electronic meter or solid state meter 5. Those consumers which consume large energy needs better technology to manage their energy consumption and need more data to improve their services. Electricity power theft prevention techniques, working. Meanwhile, the problem of the distorted current waveform from loads need to be considered. Allelectronic power and energy meters analog devices. Induction type energy meter used invariably to measure the energy consumed in any a. A mechanical disk present inside the meter rotates when the load applied. They are typically calibrated in billing units, the most common one being the kilowatt. Pdf it is undoubtedly that in the future, energy would cost more as the direct result. Electronic energy meter industrial applications vishay. If this works ok, plan to build another box with 3 meters in it.
Provide descriptions of applications for meters, data, and data analysis. These electronic meters use micro controllers with their own programming language. 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. Aug, 2006 basic working of a modern electronic energy meter as in the block diagram, the meter has a power supply, a metering engine, a processing and communication engine i. 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. Now solder two wires at both the terminals and take it out from the energy meter and then close energy meter and tight the screws. Handbook on electricity meters asiapacific economic. Electromechanical energy meters have been the standard for metering the electricity since billing began. 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. Electronic energy meter takes place of software system. Implementation of a singlephase electronic watthour.
How to check accuracy of energy meters engineer experiences. Types of energy meter em there are two types of em which works on different mechanism. Accuracy was better than 97% in the work of and power is shown in fig. Basic electronic energy meter measurement takes place by counting the led pulses at the rate of 3200 pulses per unit of electricity.
Pdf electronic energy meter with remote monitoring and billing. A second terminal block between the current transformer and the meter simplifies service work. Energy meters are the basic part to measure the power consumption. The meter is provided with a field to which entries can be made for this purpose ct or vt factor. Reliability prediction approaches for domestic intelligent electric energy meter based on iec62380 article pdf available in iop conference series earth and environmental science 1085. The following is a basic explanation of how bidirectional metering works. 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.
The software supports calculation of various parameters for singlephaseenergy measurement. The energy is the total power consumed and utilised by the load at a particular interval of time. The primary controller collects information from energy meter as well as from the smart card. How electronic energy meter works mohans electronics blog. The individual pulses are then summated through the use of an electromechanical meter, and are made available at a pulse output as well. It also explains the properties of the coil and capacitor. Pdf electronic energy meter is capable of taking readings and can store it into its memory. 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.
What is the working principle of energy meter answers. In the case of electronic energy meter different transducers are used to calculate i,v and p. Here we discuss the construction and working principle of induction type energy meter. Threephase ctpt operated keypad energy meter operation. This meter is able to perform current, voltage and power measurements in three phase supply systems. This article describes the different types of meters, what the problems with them are and why the utilities promote them. The metal disk is nonmagnetic, but electrically conductive. The working principle of an electronic energy meter is a device that measures the electronic energy consumed usually in kwh. Electrical energy meters for partial consumption electronic threephase energy meter with indirect connection, assembly on din rail or adaptable to panels electronic threephase meter active and reactive energy with indirect connection for din rails or adaptable to a panel. The three phase energy meter is used for measuring the large power consumption.
Utilities install these instruments at every place like homes, industries, organizations to charge the electricity consumption by loads such as lights, fans and other appliances. The ad775x family of energymeasuring integrated circuits accepts voltage inputs. Electrical energy meters principles and applications. Prepaymentprepaid energy meter introduction and working. If a meter is used in combination with a current transformer. An electric meter or energy meter is an essential device that goes with consumption of commercially distributed energy. Smart card, which is the switch, gives information about the limitation of units. Threephase ctpt operated keypad energy meter 10 shenzhen inhemeter co. Electronic energy meter is based on digital micro technology dmt and uses no moving parts. Specifically, elements of hardware included the power supply, interface circuit, suitable launch pad with microcontroller. 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. Energy meter circuit detailed project with source code. Watt hour meter or energy meter is an instrument which measures amount of electrical energy used by the consumers.
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. Always remove power if circuit does not perform properly, and then use mydaq dmm to check circuit for shorts or opens. This application report has the complete metrology source code. The aim of this project is to design a sample meter can accurately display real voltage, current, power and energy used during one day. One meter for the 240v and 2 meters for each side of the 120v. 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. Electronic wattmeter a modern digital electronic wattmeter energy meter samples the voltage and current thousands of times a second. Some are read monthly, while others transmit data every few seconds.
A 3phase energy meter has same elements as in case of a singlephase energy meter. It is often incased in glass and has a disk that rotates that. This article is really good kurrey consultancy services november 25, 2018 at 2. Accuracy checking of energy meter is not a difficult thing. Electronic single phase watthour meter adopts largescale ic, the latest micro electronic technologies and smt techniques.
The work presented by 3 has developed a prepaid meter billing application. 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 reliability prediction approaches for domestic. The meter which is used for measuring the energy utilises by the electric load is known as the energy meter. In order to accurately measure the electronic energy used for a electronic energy meter, suitable hardware and software have to be designed. The q meter uses in a laboratory for testing the radio frequency of the coils. Implementation of a singlephase electronic watthour meter using msp430afe2xx rev. Electromechanical energy meters engineer experiences. Implementing an electronic meter does not have to be a complex endeavor. The energy meter reading is compared with the smart. A person having a clamp meter or power analyzer can easily check the accuracy whether that person is a lay man or a techy person. The concerns are both about the meters which transmit using wireless and those.
Finally plan to test the 120v meter on my honda 6500w generator which outputs 30a at 240v on one of the connectors. An electronic energy meter eem functionally outperforms the traditional ferraris wheel meter. Electronic meters need for prepaid energy meter system. The power companies benefits from eem in three significant ways. Electronic energy meters are accurate, precise and reliable type of measuring instruments when compared to electromechanical induction type meters. The average of the instantaneous voltage multiplied by the current is the true power. Basic electronic meters are not just more costeffective than mechanical meters, but offer further benefits. Metering best practices a guide to achieving utility resource efficiency gp sullivan. Single phase induction type energy meter construction, working principle,operation,creeping,torque equation the measurement of energy is the same process as measurement of power except that the instrument not merely indicates the power or rate of supply of energy but must take into account also the length of time for which the rate of energy is. A working prototype of complete system has been developed using digital energy meter manufactured by microtech industries, pakistan, to demonstrate an efficient and transparent means of automatic. The measurement of energy is accomplished by means of a voltagefrequency converter connected downstream from the power meter. Now, the meter for this program isnt really smart in the sense of that it is sending my usage data wirelessly to the utility. When measurements are performed with upstream transformers, the displayed energy value must be multiplied by the transformation ratios. Electronic meters display the energy used on an lcd or led display, and some can also transmit readings to remote places.
Generally, one electronic energy meter consists of hardware and software. The electronic energy meter is also better protected against tampering than its mechanical predecessor, and units for prepaid operation e. What are the advantages and disadvantages of usual energy meters. 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. Executive summary there are several types of electronic meters available. Pdf automatic energy meter reading using smart energy meter. This is the power which is used to drive the shaft in the electric motor. Climatic conditions test include those limits which influence the performance of the meter externally. An energy meter is used to measure the energy consumed in the kilowatt hours. 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. It enables systematic pricing of energy consumed by individual consumer as it measures the amount of electrical energy consumed by a.
Presented here is a simple energy meter using analog devices ade7757 chip for singlephase, 2wire phase and neutral systems used in households. This is used in each and every house and industry for calculating the energy consumed by them. Electronic meters typically have three modes of operation. Jul 25, 2018 energy meters are the basic part to measure the power consumption. This explains why electronic voltmeters do not load. A unit of electricity refers to the kilo watt units of power consumed in the given time in hours. Jan 01, 2016 types of energy meter em there are two types of em which works on different mechanism.
The prototype is integrated with an interval meter, mk 6 genius electric meter. The q meter measures the quality factor of the circuit which shows the total energy dissipated by it. Implementation of a singlephase electronic watthour meter. After it user needs to open it and find the pulse led or cal leds terminals cathode and anode. 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. Working principle and construction of energy meter video lecture of measurement of capacitance chapter in subject electronic instrumentation. But these are now being gradually replaced by electronic digital energy meters. It is used everywhere, no matter how big or small consumption it is. Energy is the product of current and voltagein the case of 3 phase supply power factor must be considered. The three phase meter is constructed by connecting the two single phase meter through the shaft. One unit equals one kwh killowatthour or watthours. In addition to measuring energy used, electronic meters can also record other parameters of the load and supply such as instantaneous and maximum rate of usage demands, voltages, power factor and reactive power used etc. So, electronic type of threephase energy meter is explained below with its working principle.
When connected to loads, they consume less power and start measuring instantaneous. The total energy is the sum of the reading of both the elements. The true power divided by the apparent voltamperes va is the power factor. This document will guide you through the many options and solutions available from microchip technology inc. Kamstrup ultrasonic heat meters are produced to mid approval en1434 a stringent european standard that ensures that the accuracy and quality remain constant, so you can be confident that every meter is as good as the last. The performance tests of an energy meter as per iec standards are divided mainly in three segments which include its mechanical aspects, electrical circuiting, and climatic conditions. Energy meter is an integrating instrument which measures the total quantity of electrical energy. Working the microcontroller at89s52 acts as the primary controller. What is the solution for the drawbacks of commonly used energy meters. As their name suggest, electromechanical energy meters are the combination of mechanical and electrical technology.
Mar 28, 2017 induction type single phase energy meter. Saving of more than 30% over coventional meters meter records correct energy with same accuracy under reverse current connection led indication for current reversal tampering and phase availability an iso9001. Working example of measuring energy units using the electronic energy meter. Electric utilities use electric meters installed at customers premises for billing and monitoring purposes. It is used in domestic and industrial ac circuit for measuring the power consumption. Different types of energy meters electrical concepts. 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 work presented by 3 has developed a prepaid meter billing applic ation. Calculate the number of revolutions made by it, when connected to a load carrying 40 a at 230v and 0. Working on a 240v meter in a box which i will have done soon to test my amateur radio linear amplifier. Electromechanical energy meter measure energy by counting revolution of a rotating disk. Oct 07, 2018 trivector meter is an energy meter which accurately measures all the parameters of supply such as voltage, current, power factor, active load, reactive load, apparent load etc. The energy is the total power consumed and utilised.
Trivector meter is an energy meter which accurately measures all the parameters of supply such as voltage, current, power factor, active load, reactive load, apparent load etc. In every residence, malls, industry, everywhere energy meters are used to measure the electrical energy consumed. 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. Use eye protection when experimenting on your own circuits. Implementing an electronic energy meter, for example, can be as simple and inexpensive as using a single dedicated energy measurement ic mcp3905 and a displaycounter.
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