Tap Changers Transformers in parallel

In summary, the conversation is discussing the use of tap changers as filters for harmonics in a system with multiple transformers and variable speed drives (VSDs). The question is whether switching the tap changers from auto to manual mode will have any impact on the filtered out harmonics and neutral Earth harmonics. The response explains that tap changers on load tap changer and AVR systems are used for RMS voltage control and preventing circular current, and that vector groups and static filters are needed for controlling neutral current harmonics. The conversation ends with a suggestion to think creatively about surrounding objects and other ideas related to electrical systems.
  • #1
luc4van
4
0
If tap changers are on auto and the harmonics are filtered out, what would happen if the tap changers are switched to manual i.e. harmonics/noise
 
Engineering news on Phys.org
  • #2
luc4van said:
If tap changers are on auto and the harmonics are filtered out

Tap changer as filter of harmonics!? how
 
  • #3
Sorry should have explained, 3 transformers in parallel supplying power to 4 VSD's, if the harmonics/noise have been filtered out by adding capacitors and or tuned out at the VSD's and this was done with the tap changers on auto, what will happen if the tap changers are switch to manual? the question is really about the neutral Earth harmonics
 
  • #4
tap changer of which equipment? transformers,VSD or capacitor as harmonic filter ?
 
  • #5
Transformers
 
  • #6
Transformers on load tap changer and relevant AVR systems is considered for RMS voltage control and preventing of circular current between parallel transformer with using of voltage and current output of transformer as feedback signals, therefore voltage or current harmonics cannot influence on its loop control. For control of neutral current harmonic you must choose suitable transformer vector groups (Dy5,7) in addition of static filters.


-----------------------------------------------------------------
Creative thinking is enjoyable, Then think about your surrounding things and other thought products. http://electrical-riddles.com
 

Related to Tap Changers Transformers in parallel

1. What is the purpose of having tap changers in parallel transformers?

Tap changers in parallel transformers are used to regulate the voltage levels in power systems. They allow for adjustments to be made to the transformer's turns ratio, which in turn adjusts the output voltage. This helps to maintain a stable voltage level and prevent overloading of the system.

2. How do tap changers work in parallel transformers?

Tap changers in parallel transformers have multiple tap positions that can be manually or automatically adjusted. When the tap position is changed, the turns ratio of the transformer is altered, which changes the output voltage. This allows for fine-tuning of the voltage levels to meet the required load demand.

3. What are the different types of tap changers in parallel transformers?

The two main types of tap changers in parallel transformers are on-load tap changers (OLTCs) and off-circuit tap changers (OCTCs). OLTCs are used for continuous voltage regulation, while OCTCs are used for infrequent adjustments. Other types include resistive tap changers, electronic tap changers, and vacuum tap changers.

4. What are the benefits of using tap changers in parallel transformers?

Tap changers in parallel transformers offer several benefits, including improved voltage regulation, increased flexibility in managing load demands, and reduced power losses. They also help to extend the lifespan of the transformer by preventing overloading and overheating.

5. What are some common issues with tap changers in parallel transformers?

Some common issues with tap changers in parallel transformers include mechanical failures, insulation breakdown, and arcing. Mechanical failures can occur due to wear and tear over time, while insulation breakdown and arcing can result from poor maintenance or high voltage spikes. Regular maintenance and monitoring can help prevent these issues.

Similar threads

Replies
6
Views
2K
  • Electrical Engineering
Replies
5
Views
3K
  • Electrical Engineering
Replies
9
Views
2K
  • Electrical Engineering
Replies
18
Views
3K
Replies
20
Views
4K
Replies
6
Views
5K
  • Electrical Engineering
Replies
5
Views
2K
Replies
3
Views
750
Replies
2
Views
1K
  • Electrical Engineering
Replies
6
Views
6K
Back
Top