I would like to know the information (numbers displayed along with certain units) displayed in a digital energy meter and what use can be of these information to us.
An energy meter displays the energy consumption of a specific load normally in units of kilowatt-hour KWh. One KWh is equal to 1000 wattx 3600 seconds= 3.6 mega joule=3.6 Mjoule. Assume you have a 100 watt incandescent lamp that is on all the day, then its electric energy consumption will be= 100 wattx24h in one day= 2.4 KWh/day.So the digital energy meter measures the energy consumption and displays it in numerical form. The resolution depends in the least digit that can be displayed that is the minimum value that can be displayed. So, its reading as a function of time tells about the load consumption variation with time which is called the load profile. It tells us about the nature of the loads connected to it. Assume you have a house hole electricity meter, then the variations of its reading with time tell us about which active appliances with time. One very important information is the value of the consumption at the peak hours since the price of the electricity at such hours is higher than in the other time.
So, Smart electricity meters, aids in controlling the load profile to avoid high consumption at peak loads on the grid.
Best wishes
This will depend on the meter and many meters have lots of useful information stored in them using registers. Examples are
Many meters and their registers may be accessed via modbus for real-time data trending but more complex software is required to retrieve the historical data.
Many "smart meters" are pure used for billing whereas energy management meters may be used for demand control etc but which is normally done separately like pf correction.
see http://www.schneider-electric.com/en/faqs/FA244203/
http://azzo.com.au/wp-content/uploads/2015/05/PM8000-User-Manual.pdf
The Cumulative Electric Usage Display shows your cumulative usage in kilowatt-hour (kWh). PSO uses this number to calculate your bill. You may also wish to refer to this number if you are keeping track of your kWh usage.
A kilowatt-hour is a unit of electrical consumption equal to the amount of electricity needed to burn ten, 100-watt light bulbs for one hour.
The Reference Number 1 is unique to the Cumulative Electric Usage Display. The meter number is a unique identifier for your meter.
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