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. They induce energy which is oscillating between the electric and magnetic field of the capacitor and inductor respectively. The working principle of multifunctional smart meter. This is a microcontroller based wireless energy meter, as 8051 microcontroller is used for controlling the entire system. When used in electricity retailing, the utilities record the values measured by these meters to generate an invoice for the electricity. Electrical energy meters principles and applications.
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. The meter is provided with a field to which entries can be made for this purpose ct or vt factor. Measures active electrical energy, integrating active power with respect to time. The resonance is the condition exists in the circuit when their inductance and capacitance reactance are of equal magnitude. So energy meters measure the rapid voltage and curren. If one uses one kilowatt in onehour duration, one unit of energy gets consumed. The meter which is used for measuring the energy utilises by the electric load is known as the energy meter. Some can also measure other electrical quantities such as frequency or even. Here we discuss the construction and working principle of induction type energy meter. Energy meter or watthour meter is an electrical instrument that measures the amount of electrical energy.
This will be converted into corresponding measurements in the display section. A second terminal block between the current transformer and the meter simplifies service work. It is used everywhere, no matter how big or small consumption it is. The rotation of this disk is base of energy measurement 8. If a meter is used in combination with a current transformer. When alternating current flow though two suitably located coils produces rotating magnetic field which is cut by the metallic disc suspended near to the coils thus emf induce in the disc which is circulates eddy current in it. 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. The principle of working and construction of induction type meter is very simple and easy to understand thats why these are widely used in measuring energy in domestic as well as the industrial world. The internal nonvolatile memory of the microcontroller is used to store the consumed electricity. Single phase energy meter theory pdf download mastercard. Microcontroller based wireless energy meter working. The intelligent electronic meter is mainly composed of electronic components, its working principle is through the realtime sampling of user power supply voltage and current, and then use special electric energy meter ic processing of sampled voltage and current signals, and converted into electrical energy and pulse output is proportional to.
It works on the basic principle of bernoullis equation. Energy meter or watthour meter is an electrical instrument that measures the amount of electrical energy used by the consumers. Working principle and construction of energy meter video lecture of measurement of capacitance chapter in subject electronic instrumentation and measurement for electrical, electronics, extc. The working principle of an electronic energy meter is a device that measures the electronic energy consumed usually in kwh. Basic working principle of all energy meters are same except disk 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. It is used in domestic and industrial ac circuit for measuring the power consumption. Although volumetric flow under nominal conditions may be accurately calculated, the process conditions and fluid properties can vary sufficiently such that it is questionable if the measured volumetric flow rate or derived using velocity represents the required mass flow rates. All multimeters measure ac and dc voltage voltmeter, ac and dc current ammeter, and resistance ohmmeter. Types of energy meters and their working principles. The primary controller collects information from energy meter as well as from the smart card. An electric meter or energy meter is an essential device that goes with consumption of commercially distributed energy.
The block diagram of this project mainly includes power supply unit, a microcontroller, smart card reader, energy meter, buzzer, relay, lcd, smart and led indicators. An analogue to digital converter is used to sample voltage and current relative to incoming. In particular, conventional current flows into the positive terminal for. An energy meter is used to measure the energy consumed in the kilowatt hours. Smart card, which is the switch, gives information about the limitation of units. 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.
The energy is the total power consumed and utilised by the load at a particular interval of time. Venturi meter is a device or component which is used for measuring the rate of flow of liquid through pipes. This will reduce the energy wastage and save lot of energy for future use. What is the working principle of energy meters measure.
What is the thermal mass flow meter working principle. Based on the flow of current, the ferriwheel rotates which makes rotation of other wheels. It involve four steps in its working driving force moving system breaking system registering system 7. It is often incased in glass and has a disk that rotates that. The basic principle of induction type energy meter is electromagnetic induction.
The basic principle of induction type energy meter is electromagnetic. In all induction meters, we have two fluxes which are produced by two different alternating currents on a metallic disc. Electric power, p, is defined as the rate at which electric energy, a work, is. The light that falls on to the photocell or sensor contains energy that is converted to electric current.
It states that in a steady, ideal flow of an incompressible fluid, the total energy at any point of the fluid is constant. In simple language, this is defined as the sum of pressure energy, kinetic energy per unit volume and potential energy per unit volume equal in the same. The total energy consists of pressure energy, kinetic energy and potential energy or datum energy. In order to check out the wide area real time investigation is needed 5. System10 btu meter installation and operation guide. A 3phase energy meter has same elements as in case of a singlephase energy meter. To understand the basics, simple digital energy meters is the best option because all the other meters are merely an upgraded form of them. Principles for the evolution of net energy metering. The conventional mechanical energy meter is based on the phenomenon of magnetic induction. Ammeter definition and working principle electrical. Prepaymentprepaid energy meter introduction and working.
Calculate the number of revolutions made by it, when connected to. Electronic meters consists of current and voltage sensors which sense the amount of current and voltage consumed and this analog signal is sampled and digitized using adcs. What is the working principle of energy meter answers. This paper defines the spot monitoring of the energy meters to. Controlling of electricity theft using smart prepaid. Principle of magnetic flow meter based on faradays law. Energy meters are the basic part to measure the power consumption. As shown in the block diagram, in a typical digital multimeter the input signal i. An electromagnetic compatible test is the most important test which finally ensures the accuracy of the energy meter. After calibrating voltage, the meter can be calibrated in terms of ohms. Venturimeter principle, construction and working with. The working of venturimeter is based on the principle of bernoullis equation. Study of single phase induction type energy meter or watt. The basic unit of power is watts and it is measured by using a watt meter.
Controlling of electricity theft using smart prepaid energy meter. The electricity consumption meter shown in the figure facilitates the billing of energy meter along with load control using wireless gsm technology. Single phase energy meter theory pdf download mastercard downlood triber vodafon author. Lux meter working principle most of the lux meters consist of a body, photocell or light sensor, and display. Even this is an advanced technology it cannot cover the remote area. To ensure correct use of the meter, please read this manual thoroughly. The electromagnetic interference problem is very common today.
Working principle and construction of energy meter video lecture of measurement of capacitance chapter in subject electronic. As disk type energy meters are obsolete there is no need to discuss them here. The energy meter reading is compared with the smart. So energy meters measure the rapid voltage and currents, calculate their. Principles for the evolution of net energy metering and rate design share this document provides a consensus view of solar advocates for regulators and stakeholders considering rate design and compensation for distributed solar generation, including potential alternatives to net energy metering. When measurements are performed with upstream transformers, the displayed energy value must be multiplied by the transformation ratios.
Digital multimeter working principle electrical a2z. Moving system energy meter has a moveable aluminum disk in it which is mounted on a vertical shaft. 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. Gas flows by the heated flow sensor and molecules of the gas transport heat away, the sensor cools, and energy is lost. Handbook on electricity meters asiapacific economic cooperation. Energy meter working principle and construction electronic. The digital signals are then processed using a dsp or a microcontroller, which then displays the amount of energy consumed on a lcd or a led display. The sage flow meters are available in either inline flow bodies or insertionstyle.
Electricity theft control using smart prepaid energy meter. Working the microcontroller at89s52 acts as the primary controller. Voltmeter working principle if an ammeter is of dc type, then it has polarity signs on it for ensuring appropriate connection for an upscale indication. According to this principle, when a conductive medium passes through a magnetic field b, a voltage e is generated which is proportional to the velocity v of the medium, the density of the magnetic field and the length of the conductor. Magnetic flow meters works based on faradays law of electromagnetic induction. 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. Digital multimeter working principle analyse a meter. A digital multimeter dmm is an instrument that can measure several basic electrical quantities and shows the measurement with a number in a display. 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. This test is fragmented in two parts one is emission tests, and the other is immunity test. The electronic energy meter is also better protected against tampering than its mechanical predecessor, and units for prepaid operation e. The thermal mass meter measures gas flow based on the concept of convective heat transfer. To understand the structure of watthour meter, we must. In conclusion, hardware and software were designed to deal with the problem of the current waveform and accurately display real voltage, current, power.
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