What is the working principle of energy meter answers. Electromechanical energy meters engineer experiences. Here we discuss the construction and working principle of induction type energy meter. Wireless energy meter is a system developed to serve as a basic singlephase energy meter with advanced functionalities such as peak hour setting, peak load setting wireless reading transmission. In this project we make a smart electricity energy meter using arduino and esp8266 wifi module which can not only sends you a smsemail of your electricity bill but also you can monitor the energy uses anytime and from anywhere in the world. When used in electricity retailing, the utilities record the values measured by these meters to generate an invoice for the electricity. Metering best practices a guide to achieving utility resource efficiency gp sullivan. The meter is based on reliable, field proven digital multiplication measurement technique. The total energy is the sum of the reading of both the elements. The software supports calculation of various parameters for singlephaseenergy measurement. Following is the detailed description about all the functions. The focus meter was designed to be a lowcost, solidstate, kwhonly meter as an alternative metering and amr platform to the induction meter.
Energy meter user manual kapwrmetera this power meter is a monitoring and testing instrument which determines the power consumption of a connected appliance and the cost of the electricity being consumed. There are major three methods to compare accuracy of an energy meter. What are the advantages and disadvantages of usual energy meters. 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. Setting press and buttons together for 5 seconds, energy meter will enter into setting situation. Working principle and construction of energy meter video lecture of measurement of capacitance chapter in subject electronic instrumentation. Handbook on electricity meters asiapacific economic cooperation. The meter is provided with a field to which entries can be made for this purpose ct or vt factor. 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. The rel20000 is the em24dinav93xisx from carlo gavazzi. The idea of designing the digital household energy meter is due to the basis that it. The single phase electrical energy meter principle block diagram is shown in fig.
The circuit shown in figure1 is the circuit of 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. Electronic energy meter em34 parameters type name statistics o p e r a t i n g c h a r a c t e r i s t i c s auxiliary supply vol tage inpu cu re n ti p starting curre nt s elf pow r d 1 05 ac l 5 ao 1 0. Jul 25, 2018 energy meters are the basic part to measure the power consumption. The basic unit of power is watts and it is measured by using a watt meter. Calculate the number of revolutions made by it, when connected to a load carrying 40 a at 230v and 0. After calibrating voltage, the meter can be calibrated in terms of ohms. The power companies benefits from eem in three significant ways. The energy is the total power consumed and utilised.
This document is intended to shed some light on the sources of esd and provides guidelines on the prevention and control of esd. 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 energy meter measures the flow of energy out of and into the utility grid. The three phase meter is constructed by connecting the two single phase meter through the shaft. The energy meter data may not be used for billing purposes. An electronic energy meter eem functionally outperforms the traditional ferraris wheel meter. Inbuilt ct on back of meter is indicates in above diagram. Energy meter working principle and construction electronic. The meter can either be a mechanical analog meter that is read monthly by a utility service person who visits your home, or a newer digital meter that may send information via internet or radio. The measured values of the energy meter are transmitted to the inverter and influence the charging behavior of the battery. Presented here is a simple energy meter using analog devices ade7757 chip for singlephase, 2wire phase and neutral systems used in households. Electronic single phase watthour meter adopts largescale ic, the latest micro electronic technologies and smt techniques. Implementation of a threephase electronic watthour meter using the msp430f677xa 3 hardware implementation this section describes the hardware for the design of a working 3phase energy meter that uses the f677xa. The more advanced models are called smart meters, while the simple models are called amr meters.
Oct 06, 20 i take apart an electromechanical power meter and describe how it uses magnetic fields to measure power consumed. Basic electronic meters are not just more costeffective than mechanical meters, but offer further benefits. Working principle and construction of energy meter video lecture of measurement of capacitance chapter in subject electronic. As their name suggest, electromechanical energy meters are the combination of mechanical and electrical technology. 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. When measurements are performed with upstream transformers, the displayed energy value must be multiplied by the transformation ratios.
This meter is able to perform current, voltage and. Implementation of a singlephase electronic watthour. Smart card, which is the switch, gives information about the limitation of units. The operation of induction type energy meter depends on the passage of alternating current through two suitably located coils producing rotating magnetic field which interacts with a metallic disc suspended near to the coils and cause the disc to rotate. The meter platform will measure energy accurately over varying environmental conditions. The voltage coils numerous turns of wire already provide some phase shift the. The energy meter reading is compared with the smart. The mechanical meters for electricity, gas and water are being replaced with new digital meters in much of the industrialized world.
Threephase ctpt operated keypad energy meter operation. If the analog meter is bidirectional it will spin backwards when your solar electric system is pushing extra electricity. Analog meters also known as electromechanical are the most common, the simple meter spins forward when your using electricity. Majharul islam08 kazi mahmudul hasan11 shahjalal university of science and technology,sylhet3114 dept. If one uses one kilowatt in onehour duration, one unit of energy gets consumed. Implementation of a singlephase electronic watthour meter using msp430afe2xx rev.
The meter can either be a mechanical analog meter that is read monthly by a utility service person who visits your home, or a newer digital. If a meter is used in combination with a current transformer. The energy is the total power consumed and utilised by the load at a particular interval of time. The watthour meter works on the induction principle. Energy meters are the basic part to measure the power consumption. Induction type energy meter used invariably to measure the energy consumed in any a. Implementation of a threephase electronic watthour meter.
It has a rotating aluminium wheel called ferriwheel and many toothed wheels. Multiple modules available for pulse, analogue or communication outputs. Working of single phase induction type energy meter. Watt hour meter or energy meter is an instrument which measures amount of electrical energy used by the consumers. However, as one who is working with utilities on their smart meter marketing, customer experience, and customer education strategies, headlines such as these are frightening. 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. 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 utility company charges you for the power you use based on the monthly readings of an electric meter that measures the current passing through the service entrance into your electrical service panel. Design and implementation of wireless energy meter system for. Pdf it is undoubtedly that in the future, energy would cost more as the direct. Energy meter circuit detailed project with source code. Electronic meters need for prepaid energy meter system. So, electronic type of threephase energy meter is explained below with its working principle. Manual energy meter emem1200 series vaf, pf power and energy meter vaf, pf power emem1200em1220 series user manual, eav95462, 20140602.
It is used in domestic and industrial ac circuit for measuring the power consumption. This course on electricity meters is comprised of the following modules. Electronic energy meter nippen electrical instruments co. A mechanical disk present inside the meter rotates when the load applied. A second terminal block between the current transformer and the meter simplifies service work. How to check accuracy of energy meters engineer experiences. Overview of single phase induction type energy meter. The following is a basic explanation of how bidirectional metering works. It is possible for electronic devices to be damaged by esd that is imperceptible to the human body. 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. The primary controller collects information from energy meter as well as from the smart card.
It is used everywhere, no matter how big or small consumption it is. It is often incased in glass and has a disk that rotates that. The current and the voltage acted on the solid state electronic components. As shown in the block diagram, in a typical digital multimeter the input signal i. Electromechanical energy meters have been the standard for metering the electricity since billing began. The conventional mechanical energy meter is based on the phenomenon of magnetic induction. As in the block diagram, the meter has a power supply, a metering engine, a processing and communication engine i. Pdf a single phase microcontroller based energy meter. If you are wondering which energy meter you should use, please read the energy meters start page and energy meter product page. This electronic meter does not possess any rotating parts, and the.
Answer wikki energy is the product of current and voltagein the case of 3 phase supply power factor must be considered. This is used in each and every house and industry for calculating the energy consumed by them. Apr 22, 2016 an electricity meter is a device which measures the total electrical energy or electricity consumed by the appliances which draw electrical energy from the main power supply at a house or an official space and so on. This paper presents a single phase electrical energy meter based on a microcontroller from microchip technology inc. The electronic energy meter is also better protected against tampering than its mechanical predecessor, and units for prepaid operation e.
Electronic meters display the energy used on an lcd or led display, and some can also transmit readings to remote places. But these are now being gradually replaced by electronic digital energy meters. Still i will try my best to sort out different types of energy meters in some simple manner. What are the different types, how do they work and what are the health issues. 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 application report has the complete metrology source code. 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 three phase energy meter has two discs mounted on the common shaft. Therefore, this type of meter is also called an integrating meter. The meter which is used for measuring the energy utilises by the electric load is known as the energy meter.
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. 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 i210 product line brings innovative and flexible technology solutions that covers all your metering needs from basic electronic energy only. 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. 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.
So energy meters measure the rapid voltage and currents, calculate their product and give instantaneous power. The meter which is used for measuring the power of three phase supply is known as the three phase energy meter. Iot based electricity energy meter using esp12 and arduino. How an electric meter reads power usage the spruce. The working principle of an electronic energy meter is a device that measures the electronic energy consumed usually in kwh.
Electrical energy meters principles and applications. The energy meter thus determines and adds together or integrates all the instantaneous power values so that total energy used over a period is thus known. 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. Working the microcontroller at89s52 acts as the primary controller. Prepaymentprepaid energy meter introduction and working. Energy meter or watthour meter is an electrical instrument that measures the amount of electrical energy used by the consumers.
These are electromagnetic, electronic and smart meters. 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. Different types of energy meters electrical concepts. What is the solution for the drawbacks of commonly used energy meters. Market potential every house, small factory, business establishment, shops, offices etc. Its main functions include energy measurement, data display, communication, prepayment, contactor.
Meanwhile, the problem of the distorted current waveform from loads need to be considered. Jul, 2016 operating principle of single phase induction type energy meter. 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. The individual pulses are then summated through the use of an electromechanical meter, and are made available at a pulse output as well. Electric utilities use electric meters installed at customers premises for billing and monitoring purposes. The torque of both the elements is added mechanically, and the total rotation of the shaft is proportional to the three phase energy consumption. There are many basic types of energy meters that it is not an easy task to categorize them. Technical specifications for three phase energy meter the equipment covered by these broad specifications shall conform to the requirements stated in latest editions of relevant indian iec standards and regulations. Highly accurate thermal energy meter for heating or chilled water applications, available for pipe sizes of 15mm to 100mm with flow rates 0.
In the case of electronic energy meter different transducers are used to calculate i,v and p. The prevention and control of electrostatic discharge esd. The gas is usually a nonelectronegative gas in order to avoid negative ion formation by electron attachment, which would increase the collection time in the detector, thus limiting the dose rate that can be monitored. In every residence, malls, industry, everywhere energy meters are used to measure the electrical energy consumed. The meter should be suitable for working with following supply system variations. Generally, one electronic energy meter consists of hardware and software. Threephase ctpt operated keypad energy meter 10 shenzhen inhemeter co. Resetting if an abnormal display appears andor the buttons become unresponsive, the instrument must be reset. There is no question that smart meters are a benefit to utilities, in terms of operational efficiency. Provide descriptions of applications for meters, data, and data analysis.
Pdf electronic energy meter with remote monitoring and billing. Electronic energy meter industrial applications vishay. When connected to loads, they consume less power and start measuring instantaneous. Additionally required material not included in the scope of delivery. The measurement of energy is accomplished by means of a voltagefrequency converter connected downstream from the power meter. 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. Previously we have built a energy meter circuit which sends you sms about the bill using gsm module. Technical specifications for single phase electronic energy meter of.
Accuracy checking of energy meter is not a difficult thing. Implementation of a singlephase electronic watthour meter. Overview hxe34kp three phase four wire prepaid keypad meter is designed for the purpose of prepayment. One unit equals one kwh killowatthour or watthours. 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. Digital multimeter working principle analyse a meter. In order to accurately measure the electronic energy used for a electronic energy meter, suitable hardware and software have to be designed. We cannot think of life without electricity and when there is electricity consumption there is a need to measure its consumption.
An energy meter is used to measure the energy consumed in the kilowatt hours. Chapter 4 104 survey meters come in different shapes and sizes, depending upon the specific application see fig. Other em24 models from carlo gavazzi can also be used, as the communication is the same. Based on the flow of current, the ferriwheel rotates which makes rotation of other wheels. The aim of this project is to design a sample meter can accurately display real voltage.
513 459 546 907 1222 1078 355 1507 1218 313 1167 1042 234 1187 641 982 270 1475 10 81 713 1043 842 388 353 442 853 365