CLOU GLOBAL TECHNOLOGY provides energy management products and customized solutions for efficient energy usage, cost reduction, and sustainability compliance.
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Recent Articles
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What is a Voltage Dip Event?
Sometimes it's also referred to voltage sag (IEEE term). The meaning is the same. This article explains the power quality event logging inside of smart meters.
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The First Breath Notification
The First Breath Push notification is sent to the head end system (HES) as soon as the meter is powered up.
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The DLMS Push Message
A electronic energy meter with communication via DLMS can be configured to send Push messages. Usually a meter acts as a server.
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The Last Gasp Outage Notification
Smart meters can generate a Push message in case of power fail. This event is called Last Gasp.
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Practical Use of Load Profiles
Electronic energy meters can save internally a lot of data. When this data are saved periodically with time stamp, we talk about a load profile.
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The TOU Tariff Structure
TOU stands for time of use. It's getting popular together with smart energy meters and advanced metering infrastructure (AMI).
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Energy Meters and Tariffs
Electronic energy meters are recording the actual power over a certain time. The microprocessor inside of these meters allows all kind of additional calculations.
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Sealing of Energy Meters
Electrical Energy meters are sealed to detect possible manipulations. The utility field workers check the meter installations regular.
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Sealing of Optical Ports
The optical port is for local communication with energy meters. With suitable software and an optical reading head you can access to the meter for reading and writing certain parameters.
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Principle for Accuracy Testing of Energy Meters
Now meter testing is much more comfortable. Actually you only need to put the meters on the rack. For testing big quantities of meters a robot can also do the job. But what happens inside?
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Basics of Energy Meter Accuracy Tests
In the past without any electronics a accuracy test was really challenging. You needed a voltage/current source with a high stability, calibrated wattmeters and a calibrated stop-watch.
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How does a scanning head work?
Each energy meter used for billing must have a test output. An optical indication is mandatory. Beside this the meter can also have electrical test outputs.
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The Principle of Three-Phase Generators
We have a nice three phase power supply in our home, but where does it come from? And why does the waveform has a sine shape?
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Accelerated Life Test for Energy Meters
There are several ways to predict the reliability of an energy meter. The IEC provides a series of standards related to reliability tests or evaluations.
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How does Net metering work?
When you are generating power by solar or wind, you might produce more energy than you actually need.
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Is there a Lifetime Calibration?
Electronic energy meters are adjusted for life-time. A recalibration has to be done by country rules and regulations.
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What will be the recorded demand?
What will be the recorded demand if a constant load of 1 kW is applied through a 30 minute demand meter ?
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How to get a Clear Tamper Token?
A clear tamper token is required to unlock a STS meter showing the tamper sign. Only the local power company can issue this token code.
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