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For this high volume market, a converter that interfaces directly to the current and voltage transducers and instantly accumulates kilowatt-hours is a valuable building block for reaching innovative solutions. The cost sensitive residential single phase market needs only a subset of the functionality of the electronic three-phase meter. The MARK-V energy meter is deployed by over 160 utilities, energy service providers, and other companies worldwide. The Transdata® MARK-V energy meter offers the most advanced features and functionality available in the market today (see figure 4). A high-speed, high performance micro-processor or DSP uses the digitised waveforms to calculate the necessary parameters. Three-phase meters use electronics to interface to current transducers and digitise the voltage and current waveforms. The three-phase meter market requires electronic solutions to meet higher accuracy to obtain power quality information and to operate industrial sites through net-work management efficiently. It is fast enough for industrial use, so it should be more than adequate for residential consumers.Įlectronic energy measurement has already been demonstrated with highly functional three-phase meters. Web-based solutions such as the Transdata® Mark-V display energy consumption that is updated every 14 seconds to a computer terminal. The small display increases consumer awareness of energy consumption and offers additional energy management tools such as load profiling. Electricity dispensing solutions such as CashPower™ (see figure 2) and PowerCom™ (see figure 3) allow energy consumption on credit and offer an LCD display inside the home as a user interface for paying bills. ![]() Imagine an energy measurement pod placed away from your house – much like many of our natural gas meters, which are underground and out of sight.Ī display of energy consumption either on a panel inside the home or available on a computer terminal allows consumers to exercise greater freedom in accessing data to make decisions about energy management and bill reconciliation. ![]() Instead, an energy metering revolution can unfold when the displays outside our homes are recognised as unnecessary. We should not try to make our electronic solutions into an electromechanical look-alike. #Transdata markv driverAn electronic display that is robust across wide variations in environment and temperature can be costly when non-volatile memory, display driver electronics, and liquid crystal displays are considered. This is important because the cost of an electronic energy meter needs to be reduced. Furthermore, if we want caller identification then we pay for the additional component to display this information. Similarly, we do not expect a meter display of our telephone conversations – an itemised bill is sufficient. We don’t get the cards in the mail to fill out and send back to utilities anymore. After all, hardly anyone complains that meter reads are now estimated. The residential consumer in North America has already found the external display on the energy meter useless. #Transdata markv how toMost consumers either don’t know how to interpret these dials, or never read the meter to double-check a bill unless it is inconsistent with past bills. #Transdata markv seriesIn North America, most residential energy meters are electromechanical they use a series of dials to display kWh consumption. An energy meter’s display belongs in the home For example, an electronic display adds unnecessary complexity to a meter. Surprisingly, these two concerns are closely related and could be remedied by considering new approaches, like reducing the number of components to increase reliability. Further issues of concern were compliance with the ANSI specification that requires a display on the meter, and long-term reliability. An electronic meter that is accurate to 0.5% during installation will not drift with time. Unfortunately, few people recognised that periodic field calibration is unnecessary with electronics. Some people seemed hesitant to accept this new technology. ![]() #Transdata markv verificationThe same DC power supply required for the electronic board retrofit is suitable for operating an energy measurement device.Ī reference design was on display at the show to illustrate simplicity and verification of design (see figure 1). A popular topic of discussion at the AMRA Symposium this year was the apparent ease of retiring our old friend, the electromechanical energy meter, and replacing it with a single integrated circuit and its current transducer. ![]()
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