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