Harmonic amplification with Turbogenerator supply
Harmonic amplification with Turbogenerator supply
(OP)
In one of the cement plant where we conducted harmonic audit we found that on the HT 6.6. KV BUS, the Voltage as well as current distortion drastically increased when the supply was switched from Utility supply to their own Captive Turbogenerator supply. It increased from nearly 2% to almost 10% both for current and Voltage. The cement plant also faces a problem of heavy vibrations in HT motors when the supply is switched to Captive generation. Why the distortion has gone up so much ?? Is the vibration due to this distortion ? Will installing a passive filter on Captive Generation bus, help solve the problem ?






RE: Harmonic amplification with Turbogenerator supply
It is unlikely that the generator is the source of the harmonics you are seeing.
This is a fairly common problem when standby generators are used for pump stations where 99% of the load is non-linear.
Filters may help, but it would be best to locate the filters near the source of the harmonics, if possible.
RE: Harmonic amplification with Turbogenerator supply
RE: Harmonic amplification with Turbogenerator supply
As said before for a more detail answer a single line diagram would help .
A.Rash BScEE & PE
a_rash@bigfoot.com