An electric meter or energy meter is an essential device that goes with consumption of commercially distributed energy. Facilities instructions, standards, and techniques volume 310 watthour meter maintenance and testing internet version of this manual created december 2000 facilities engineering branch denver office denver, colorado the appearance of the internet version of this manual may differ from the original, but the contents do not. Networking of meters through dedicated wires, power. What are the different types, how do they work and what are the health issues. The working principle of an electronic energy meter is a device that measures the electronic energy consumed usually in kwh. Power and energy meters software downloads thorlabs. 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.
The commercial unit of electrical energy is kilowatt hour kwh. Power and energy meters software downloads the links below will lead to software and driver downloads for our power and energy meters software downloads. Design and implementation of wireless energy meter system for. Electromechanical energy meters have been the standard for metering the electricity since billing began. If a meter is used in combination with a current transformer. Pdf automatic energy meter reading using smart energy meter. 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. Xcel energy is dedicated to providing safe, economical, and reliable service to our customers. Energy meter circuit detailed project with source code. To study the construction and working of single phase energy meter and to find out energy consumed in 30 minutes. To enable a registration process for future upgrades of the energy meter, the documentation package is delivered with an rid and pic label. Threephase and singlephase energy meters, highquality pdf.
Study of single phase induction type energy meter or watt. Static and dynamic networking of smart meters based on the. If the number of joules resets to 0 j and output voltage goes to zero, then the energy meter has been overloaded and must be recharged. 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. In this paper, energy meters which is already installed at our houses are not replaced, but a small modification on the already installed meters can change the existing meters into smart meters.
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. Page 4 energy storage power level is low and you should soon charge the energy meter. Digital energy meters by the millions analog devices. What is the solution for the drawbacks of commonly used energy meters. There are many types of energy meters having different working principle. Drm121, mqxenabled mcf51em256 singlephase electricity meter. This is an example of a dial type kwh meter that you may see outside your home. Threephase ctpt operated keypad energy meter operation. Mejbaul haque1 et al microcontroller based single phase digital prepaid energy meter for. The dials are the small circles on the front of the meter, this meter consist of fivedials.
We cannot think of life without electricity and when there is electricity consumption there is a need to measure its consumption. Electric utilities use electric meters installed at customers premises for billing and monitoring purposes. To be able to talk more about these capabilities of energy meter, we first need to mention the types of energy. Additionally required material not included in the scope of delivery. Other types of meters communicate directly with the utility home office, without any meter readers at all. In order to accurately measure the electronic energy used for a electronic energy meter, suitable hardware and software have to be designed. 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 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.
Previously we have built a energy meter circuit which sends you sms about the bill using gsm module. Energy meters are the basic part to measure the power consumption. Emem1200 series vaf, pf power and energy meter,em6400ng,em6433 energy kwh meter,em6436 load monitor,em6438em 6436 dual source energy meter,em6459 vaf, pf meters. The mechanical meters for electricity, gas and water are being replaced with new digital meters in much of the industrialized world. Talking energy meter the purpose of this project is to build a kwh kilo watt hour meter that can alert the users with voice messages. The meter which is used for measuring the energy utilises by the electric load is known as the energy meter. The energy is the total power consumed and utilised by the load at a particular interval of time. Before working on the current transformers disconnect the voltage paths of the energy meters. To search for the software for your device, please enter the item number here. And arduino uno can only work after we uploaded the designed program into it.
One single phase energy meter, one single phase load, stop watch and connecting wires. Based on the flow of current, the ferriwheel rotates which makes rotation of other wheels. Presented here is a simple energy meter using analog devices ade7757 chip for singlephase, 2wire phase and neutral systems used in households. Watt hour meter or energy meter is an instrument which measures amount of electrical energy used by the consumers. The meter is provided with a field to which entries can be made for this purpose ct or vt factor. Working closely with industry leaders to further develop solutions in this space. 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.
The electronic energy meter is also better protected against tampering than its mechanical predecessor, and units for prepaid operation e. 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. Read from lesson 1 of the work, energy and power chapter at the physics classroom. The wireless energy meter monitoring system aims to minimize these difficulties by providing automatic energy.
Work, energy and power key concept energy is the ability to do work, and may be obtained in many forms. Implementation of a singlephase electronic watthour 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. The circuit shown in figure1 is the circuit of energy. 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 of single phase induction type energy meter. 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. The power companies benefits from eem in three significant ways. Power meter hardware figure 11 below shows the parts of the power meter 750. Jul 25, 2018 energy meter testing july 25, 2018 february 24, 2012 by electrical4u we cannot think of life without electricity and when there is electricity consumption there is a need to measure its consumption. The concept of individual onsite meter testing with current and voltage sources has become increasingly popular. These individuals believe electronic metering solutions can provide the residential energy market with accuracy, flexibility and networking. The aim of this project is to design a sample meter can accurately display real voltage. There are many basic types of energy meters that it is not an easy task to categorize them. Working principle and construction of energy meter video lecture of measurement of capacitance chapter in subject electronic. Here we discuss the construction and working principle of induction type energy meter. An energy meter or kwh meter is a device that measures the amount of electrical energy supplied to or produced by a residence, business or machine. The use of gsm module provides a feature of notification through sms. The conventional mechanical energy meter is based on the phenomenon of magnetic induction.
This document is valid for the sma energy meter emeter20 from firmware ver sion 2. Sem is an electric device which has energy meter chip that records the consumption of electric energy, wireless system for communicating with data like gsm network and devices for the purpose of. The primary controller collects information from energy meter as well as from the smart card. Pdf a single phase microcontroller based energy meter. Designing smart meters for the smart grid meera balakrishnan. Prepaymentprepaid energy meter introduction and working. An open standard protocol for networking of energy meters. This electronic meter does not possess any rotating parts, and the.
They are typically calibrated in billing units, the most common one being the kilowatt hour kwh. Kilovolt amperereactivehour kvarh is the unit for reactive nonworking energy. Electronic energy meter industrial applications vishay. Alternatively, the rid and pic are printed on the type label of the energymeter. Wireless automation in the generation, transmission and distribution of electricity and billing has come of age. The three phase meter is constructed by connecting the two single phase meter through the shaft.
The dial pointer rotates clockwise and anti clockwise on the dials. Below are the the connections diagrams for installation of a singlephase 3phase, 4 wire kwh meter digital or analog energy meter from the supply to the main distribution board in home. It is used in domestic and industrial ac circuit for measuring the power consumption. Pdf an open standard protocol for networking of energy meters under the simple networkmanagement protocol snmp environment is. The energy meter reading is compared with the smart. Prepaid and postpaid energy meter for billing system using. What are the advantages and disadvantages of usual energy meters. A second terminal block between the current transformer and the meter simplifies service work. 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. Jul 25, 2018 energy meters are the basic part to measure the power consumption. In every residence, malls, industry, everywhere energy meters are used to measure the electrical energy consumed. Still i will try my best to sort out different types of energy meters in some simple manner. Energy meter or watthour meter is an electrical instrument that measures the amount of electrical energy used by the consumers.
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. Pdf an open standard protocol for networking of energy meters. Iot based electricity energy meter using esp12 and arduino. Basic working principle of all energy meters are same except disk type energy meter. Smart card, which is the switch, gives information about the limitation of units. International journal of applied engineering research issn 09734562 volume, number 6 2018 pp. Working principle and construction of energy meter video lecture of measurement of capacitance chapter in subject electronic instrumentation. This paper presents a single phase electrical energy meter based on a microcontroller from microchip technology inc. An electronic energy meter eem functionally outperforms the traditional ferraris wheel meter. Traditional metering methods for retrieving the energy data of consumers is not convenient. Automatic tariff calculation with wireless energy meter.
The biggest superior features of energy meters from energy analyzers are. Pdf a method of determining an electric energy meter. Electronic energy meter is based on digital micro technology dmt and uses no moving parts. Therefore, this type of meter is also called an integrating meter. 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 purposes. 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. It has a rotating aluminium wheel called ferriwheel and many toothed wheels. The software supports calculation of various parameters for singlephaseenergy measurement. The energy meter measures the flow of energy out of and into the utility grid. The circuit shown in figure1 is the circuit of energy metering.
Meanwhile, the problem of the distorted current waveform from loads need to be considered. The work done is equal to the change in the kinetic energy. The nem program uses a bidirectional meter to track the net difference between the amount of electricity produced by your generating system and the amount of electricity you consume from the power grid during each billing period. Those consumers which consume large energy needs we cannot think of life without electricity and when there is electricity consumption there is. One can easily access the meter working through web page that we designed. To expedite service connections and treat each of our customers equally and fairly, we have developed installation standards for gas and electric services. A method of determining an electric energy meter maximum uncertainty. 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. Electronic meters need for prepaid energy meter system. 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. Overview of single phase induction type energy meter. As disk type energy meters are obsolete there is no need to discuss them. When measurements are performed with upstream transformers, the displayed energy value must be multiplied by the transformation ratios. If the manual meter reading and bill data entry process can be automated then it would.
The following is a basic explanation of how bidirectional metering works. Working the microcontroller at89s52 acts as the primary controller. Mar 28, 2017 here, in this article lets just stick with the basics of energy meters. Energy meter reading is a monotonous and an expensive task. Type labels are, however, difficult to read when installed. 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. 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. Mar 27, 2016 there are basically 3 types of energy meters. Electrical energy meters principles and applications. The energy meter data may not be used for billing purposes.
Smart grids infrastructure development protocols emerging for control and communication of various. Energy meter is an instrument which measures electrical energy. Electricity is a clean, convenient way to deliver energy. Doing work either transfers energy from one object to another or transforms it. Design and implementation of wireless energy meter system. Threephase ctpt operated keypad energy meter 10 shenzhen inhemeter co. Discover schneider electric range of products in conzerv energy meters. The energy storage should be charged before each lesson. For any questions regarding our software, please contact technical support. In order to test meters, particularly those of the 0. The meter which is used for measuring the power of three phase supply is known as the three phase energy meter. 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.
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