Continue to Site

Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

  • Congratulations KootK on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Power Theft Prevention 9

Status
Not open for further replies.

thony999

Specifier/Regulator
Dec 10, 2014
14
Hi guys.
As part of my infrastructure to prevent power theft by customers connected to our power network, I want to install 50Hz to 5Hz frequency converter at my 11kV/400V main power distribution transformer transformer and also a 5Hz to 50Hz converter at the customer's premises integrated with their meter at 400/230V. 
When power is received from the 11kV grid and transformed from 11kV to 400V, the frequency is also transformed from 50Hz to 5Hz. When the power gets to the consumer's premises, it is transformed from 5Hz to 50Hz by a 5Hz/50Hz frequency/frequency converter.
Thus, if customer bypasses the meter at their end, it will automatically bypass the 5Hz to 50Hz converter which will cause their equipment to malfunction because power supply will be at 5Hz which is not suitable for any of the equipment/loads. This is expected prevent power theft. 
A sketch of the conceptual circuit configuration is attached.


Please, let me know if this has been realized before, the size of the Frequency/Frequency Converter or complete kWH Meter unit with the converter integrated in the same package,and cost. Basic specifications - 50Hz/5Hz at 400V, 3-phase and 5Hz/50Hz, at 400V & 230V (single & 3 phase)of various amperage for tariffing kWH meters with the frequency/frequency converters installed.

Grateful you treat as urgent.

Best Regards, Anthony
 
Replies continue below

Recommended for you

Another thought, on smart meters they record interruptions, and that maybe an indication of someone removing a meter.
 
Status
Not open for further replies.

Part and Inventory Search

Sponsor