Energy Meter
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This document discusses different types of energy meters. It introduces energy meters as devices that measure the amount of electrical energy consumed by homes, industries, and commercial buildings. It describes electromechanical induction meters, which use a metal disc that revolves in a magnetic field, with a counting mechanism to record rotations corresponding to units of energy used. Electronic energy meters display energy usage digitally and can measure usage in peak vs. off-peak hours. Smart energy meters provide real-time usage data and accurate billing by communicating readings remotely. Tampering is a major concern as meters can be manipulated to under-register energy usage, resulting in lost revenue.
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Energy meter
An energy meter measures the amount of electrical energy consumed. It works by using magnetic fields to rotate an aluminum disk, whose rotation is proportional to energy usage. The disk's rotation is retarded by permanent magnets to prevent over-rotation. Its movement is registered by mechanical counters displaying the energy consumed. Traditional meters have drawbacks like friction and flux inaccuracies over time. Smart meters provide more accuracy, longer life, and digital displays to address these issues.
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This document summarizes and compares two types of electrical energy meters: electromechanical induction meters and electronic meters. Electromechanical meters measure energy usage by counting the revolutions of a rotating metal disk driven by magnetic coils related to current and voltage. Electronic meters use digital microchips and circuits to sample current and voltage and calculate power consumption digitally. Electronic meters offer additional features like displaying multiple power readings, remote data transmission, and prepaid billing options.
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Energy Meters
The document discusses energy meters and how they work. It provides information on:
1) The basic components and operating principles of induction-type energy meters, including how they measure power consumption over time using a rotating aluminum disc.
2) The history of electricity meters dating back to 1872, and how modern watthour meters developed from early designs.
3) Additional meter types like CT meters, electronic meters, and special purpose meters like prepaid and smart meters.
4) Key aspects of energy metering like accuracy classes, maximum demand calculation, and advanced metering functionality.
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The document discusses using programmable logic controllers (PLCs) installed with power meters to minimize power theft. PLCs connected to power meters via an optical fiber network can remotely monitor and control power usage. If payments are delinquent, power companies can stop supply from the networked meters. Installing PLC-enabled meters high on poles separates the measurement and display functions, preventing tampering while still allowing users to check usage.
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An energy meter measures the amount of electrical energy consumed. It works by using magnetic fields to rotate an aluminum disk, whose rotation is proportional to energy usage. The disk's rotation is retarded by permanent magnets to prevent over-rotation. Its movement is registered by mechanical counters displaying the energy consumed. Traditional meters have drawbacks like friction and flux inaccuracies over time. Smart meters provide more accuracy, longer life, and digital displays to address these issues.
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The document discusses energy meters and how they work. It provides information on:
1) The basic components and operating principles of induction-type energy meters, including how they measure power consumption over time using a rotating aluminum disc.
2) The history of electricity meters dating back to 1872, and how modern watthour meters developed from early designs.
3) Additional meter types like CT meters, electronic meters, and special purpose meters like prepaid and smart meters.
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The document discusses using programmable logic controllers (PLCs) installed with power meters to minimize power theft. PLCs connected to power meters via an optical fiber network can remotely monitor and control power usage. If payments are delinquent, power companies can stop supply from the networked meters. Installing PLC-enabled meters high on poles separates the measurement and display functions, preventing tampering while still allowing users to check usage.
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3. A PLC-based system would install meters with PLC modules high on power poles to transmit usage data through power lines to displays in homes, while a second meter verifies usage to detect theft. GSM networks could also enable automatic remote meter reading to
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http://ieeexplore.ieee.org/search/searchresult.jsp?queryText=Smart%20Electricity%20Meter%20Data%20Intelligence%20for%20Future%20Energy%20Systems:%20A%20Survey&newsearch=true
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An electricity meter is a device for measuring the amount of
electrical energy used by consumers. Where electricity
companies install these meters at every subscriber, such as
homes, factories, administrative and government buildings and...,
after the electrical network is connected to their units to supply
loads such as lighting systems, fans, adaptations, office
appliances and any other equipment with electricity .
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nature of the contracted loads and electrical power. They may
also be connected directly to the electrical network or be
connected through auxiliary transformers ( current and / or
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This document discusses energy management using a maximum demand controller. It begins with an introduction that explains the purpose of maximum demand meters is to monitor and control maximum power demand in order to reduce monthly electricity bills. It then provides background information on maximum demand, including definitions and why controlling maximum demand is important. The document also includes sections on the basic concepts and components of a maximum demand controller, including how it works to disconnect non-critical loads and avoid exceeding the contracted power limit. It discusses the potential applications and advantages of using a maximum demand controller.Energy meter
An induction type energy meter works by using a movable aluminum disk mounted on a shaft. When electrical current flows through the meter, eddy currents are induced in the disk causing it to rotate. The disk's rotation is retarded by permanent magnets and its speed is proportional to the load. The amount of energy is displayed on mechanical counters coupled to the shaft. Smart energy meters offer improvements like increased accuracy, wireless data transmission, and power factor measurement using a microcontroller. They allow for remote meter reading without site visits and provide customers information about their current energy usage.
Smart energy meter (Updated)
This document describes a smart energy meter that uses a GSM module to send electricity consumption data via SMS. The meter uses an AD7751 IC to measure real power consumption based on current and voltage inputs. An AVR microcontroller then processes this data and calculates energy used. It can send meter readings, billing information, and load details to the user's mobile phone upon request via a missed call to provide real-time monitoring. The smart meter allows for accurate and automated energy monitoring and billing compared to traditional meters.
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Energy Meter
- 1. ELECTRICAL AND ELECTRONICS MEASUREMENTS Submitted by: Akkahshh Agarwaal 204115 Sumit Ahirekar 204116 Anirudhda Deore 204118 ENERGY METER
- 2. INTRODUCTION Energy meter (watt-hour meter) Measure amount of electrical energy used by consumers Lights, fans, refrigerator and other appliances Homes, industries, commercial buildings One kilowatt in one hour (1kW-hr) one unit of energy Measures instantaneous voltage and current, calculates it’s product and gives instantaneous power. Integrated over a period of time and gives energy utilized over that time. Energy = Power x Time 1 kW-h = 1 kilowatt x 1 hour
- 3. TYPES OF METERS Electromechanical Induction Type Electronic Energy Meter Digital Analog Smart Energy Meters
- 4. ELECTROMECHANICAL TYPE INDUCTION METER Non-magnetic and electrically conductive aluminium metal disc-revolve in magnetic field Placed between the pressure coil and the current coil Interaction between fields produced causes eddy currents to flow and hence a force is exerted on the disc Breaking magnet-opposes the movement of the disc and stops the disc at power off Counting mechanism – record no. of rotations Reading (kWh) = No. of rotations x meter constant
- 6. ELECTRONIC ENERGY METER Show energy usage on LCD/LED display Record the amount of usage energy in on-peak and off- peak hours Reactive power used, instantaneous rate of usage demand, power factor, maximum demand, etc.
- 7. SMART ENERGY METERS Smart meters measure how much electricity you are using, as well as what it’s costing you, and display this on a handy in-home display Accurate, not estimated bills Features – how much energy you are using in real time How much energy was used in the last hour, week and month High, medium or low usage
- 8. TAMPERING & SECURITY Major concern for agencies Can be manipulated (stop, under-register) Remote-reporting meters Common method – attach magnets outside the meter. These magnets prevent the AC from forming eddy currents in the rotor Use of combination of some capacitive and inductive load result in reduction of rotor speed Large portion of country’s revenue is lost – very important to detect tampering