Simple how to read bidirectional energy meter youtube. The photovoltaic meter keeps track of how much energy is produced by your solar panels. This greatly reduces the problem of source drift, battery life, etc that arise in example 1. Technical specifications for high precision ht static. Net metering is an enabling policy designed to foster private investment in renewable energy. The test system of the bidirectional charger is shown in fig. Pdf development of bidirectional net meter in grid. Having designed a number of energy meters over the years, i can say with authority that reactive energy q is not the same as exported energy pe, in fact it has basically nothing to do with it. In this way, a facility administrator can keep track of all energy data, ensuring accuracy in billing and crediting. Single phase bidirectional dual element powerenergy. According to the difference of phase angle between the current and the voltage waveform in the electric grid, the energy consuming direction can be judged 11. Run hour displayed in 8 digit hour and minutes format. Singlephase bidirectional energy meter with serial sbus interface bidirectional energy meters with an integrated serial sbus interface make it possible to read out all relevant data, such as energy, current, voltage, active and idle power and cos technical data accuracy class b in accordance with en504703, 1 in accordance with iec6205321. The s0interface spoken szerointerface is a hardware interface used in the transmission of measurements in building automation.
In residential, institutional and social sectors, mnre government of india is providing 30% subsidy on the total cost of the roof top. Application for installing or upgrading a renewable energy system and bidirectional metering 30 kw 1 mw only this form must be completed if you are planning to install or upgrade a renewable energy system over 30 kw, and you will be transferring electricity into western powers network. Net metering uses a single, bidirectional meter and can measure the current flowing in two directions. Your bidirectional meter measures power flows going into and out of your home or business. Installation of solar meter and bidirectional meter by pgvcl. An e51 energy meter capable of bidirectional metering is important in this application.
In addition, system was designed modularly allowing full development to the level of microgrid system, which included integration of other alternative. This allows a technically efficient design of an energy management system and avoids fundamental organizational changes to the current grid regime. Slr1120152442b dtd th august 2015 from government of gujarat energy. Energy meter or watthour meter is an electrical instrument that measures the amount of electrical energy used by the consumers. Unitech bidirectional energy meter pentadc1 in india. V, irms and vrms, energy topulse conversion zsmart autoboot mode from serial eeprom enables use without mcu. If the evs are considered a dg, there should have a bidirectional smart meter which not only measure energy charged vehicle but also measure energy supplied to grid. In this paper bidirectional net meter is accumulate to compute energy delivered by the electric distribution. Generation must meet the specifications of the net energy meter rider which specifies.
The following is a basic explanation of how bidirectional metering works. The meter monitors power imported from the grid, as well as power exported from the solar panels. Proceedings of the 5th small systems simulation symposium 2014, nis, serbia, 12th14th february 2014 80 dynamics of energy efficiency and other parameters can be observed as well. Application for installing or upgrading a renewable energy. A wide variety of bidirectional meter options are available to you, such as digital only, analog and digital, and analog only. When connected in series with a meter, the number of meter pulses generated during the round trip displacement of the provercalibrated water drawn volume yields accurate. It provides a simple analog interface to a microcontroller and is specifically designed for meter manufacturers to have full control over the meter functionality. If a meter is used in combination with a current transformer. Consumer energy management system with integration of. When you get a gridinteractive solar electric system installed in southwest florida, fpl or lcec will replace your standard meter with a bidirectional meter. Data sheet awd3 3phase, bidirectional energy meter for. These meters are known as bidirectional energy meters or importexport energy meters. General introduction of our 2way energy monitoring and control system. Single phase, bidirectional power energy ic features zenergy data linearity.
All meter sockets, meter pedestals, group meter assemblies, and modular meter assemblies shall be listed by an independent testing agency such as ul for the specified voltage and. In this paper, a smart power meter, bidirectional communication and remote control are. Electrical energy meters principles and applications. Kingfisher international fiber optic test equipment. Understanding power flow and naming conventions in bidirectional metering applications by michael bearden introduction in 1982 raymond ray stevens published a paper power flow direction definitions for metering of bidirectional power. What you need is an energy meter that has separate counters for imported real energy p and exported real energy pe. Highly efficient, versatile bidirectional power converter. This specification covers high precision tri vectors static energy meters bidirectional meter four quadrant of accuracy class 0. The same meter can be configured to net meters as and when the need arises ota. The concept of decentralized decision based on information from a. This meter records electricity flow in both direction to an from the electric grid and the net amount of energy consumed since it was installed. How bidirectional power flow can be achieved in smart. All inesh smart meters are bidirectional meters with four quadrant and independent register for import, export and net measurements. Specification for bidirectional 1 phase static meter page 2 of 27 iec 6205321 2003.
Lets say your solar panels provide 200 kwh of energy. The photovoltaic meter and the the net meter both have different purposes. One is solar meter which monitors the solar power produced from the solar pv modules and other meter is bidirectional meter which is installed by replacing the old meter installed at the premises of user. Bidirectional charging unit for vehicletox v2x power flow. The bidirectional meter measures energy coming out of the home or business dl, energy going in rc and the net energy flow nt. Vendor list of bescom approved bidirectional meters. Proceedings of the 5th small systems simulation symposium. The difference between our unidirectional 1way energy monitoring system and our bidirectional 2way monitoring and control system is that a 1way system transmits signals only from the transmitter to the monitor while a 2way system allows for transmission both ways. Complete utility metering solutions microchip technology. 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. Energy meter is the ideal supplier of data for intelligent energy management within the sma smart home. A source and meter is required at both ends, and the measurement is performed in both directions. The difference between a bidirectional meter and a traditional meter is that the bidirectional meter has three different readings. The sames sa2007h is a single phase bidirectional dual element energy metering integrated circuit.
This meter has electronic registers which record instantenous power and interval data storage. Scada systems fit very well with hierarchical control silva et al. The bidirectional meters are used to measure incoming and outgoing power to a site, so if you have a solar system and plan to get paid for the power you are feeding back. Awd3 3phase, bidirectional energy meter for current converter metering with integrated s0output controls division bidirectional energy meter with lc display and integrated s0interface.
Bidirectional metering for residential solar energy systems. Bidirectional meter senses the direction of flow of current and stores the data in a separate register. This ic is an integrated powermeasurement device that combines two delta sigma ad converters, highspeed power calculation. The prototype of the bidirectional charger can charge and discharge on the same circuit, which realizes a smaller and more inexpensive unit. Simultaneous display of three instantaneous parameters grouped page wise. Each source is referenced to the meter at the same end, which should be done just before the measurement. How to read a solar net metering bidirectional utility meter. Tida00476 is comprised of a single dcdc power stage, which can work as a synchronous buck converter or a synchronous boost converter, enabling bidirectional power flow between dc power source and energy storage system. Meter with integrated electronics the bidirectional metering solution for light liquid products measurement principle cta turbine flowmeters are essentially designed to measure volumetric flowrates of liquids during fuelling or refuelling operations.
Similarly, other sections of smart grid may also have such capability. At the rated output of 2 kw, the bidirectional charger demonstrated an efficiency of about 92% and power factor of 99% or more, achieving. The cs5463 enables digital power meter manufacturers to provide highly accurate, costeffective solutions for advanced power measurements. Bidirectional energy meter electrical engineering stack. Any energy not used is excess energy and will be banked and sold to lcec. 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. All pv generation data, purchased electricity and grid feedin can be transmitted via standard ethernet cable to the sunny home manager, for example, or, in the future, to the sunny boy smart energy. The net meter keeps track of energy flowing to and from your utility provider. A relatively new electricity meter that allows households and businesses to better monitor their electricity usage at any given time, giving them the potential to save money. If you dont already have a bidirectional meter, your meter will need to be replaced, reprogrammed or reconfigured to ensure its compatible.
The ampy em1200 meter you refer to is a single phase 2 element bidirectional meter, meaning it can register 2 import tariffs general and offpeak and one export tariff feedin. This paper helped reduce the confusion in the terminology associated with the naming of power. To install a solar power system youll need to have a bidirectional energy meter that is capable of separately measuring and recording electricity flows in each direction consumption and export. How to read my bidirectional meter lcec lee county. All meters are having 60 months of warranty from the date of supply. Pic18f87j72 single phase energy meter reference design ard00280 this is a fully functional single phase meter featuring the pic18f87j72 mcu with analog front end. How net meters are read a pv system can be installed after applying for a permit from local government and an inspection. An application for generation interconnection must be submitted to your electric company prior to generation connection. The present work follows the advanced control structure composed by two interrelated levels.
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