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Topic Title: pole mounted capacitor bank Topic Summary: Created On: 13 June 2012 06:07 PM Status: Post and Reply |
Linear : Threading : Single : Branch |
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 13 June 2012 06:07 PM
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hello
i would like to understand how to design the bank rating of pole mounted capacitor bank for 22 kv system. we are presently facing low voltage problem at the end of a line and we were wondering whether we could install these banks to improve the voltage profile. also which is better, internally fused or externally fused banks |
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27 June 2012 05:21 AM
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Ideal location for capacitors will be close to the load. Based on the nature of load , the bank rating will be decided . Engineers widely use the "2/3 rule" for sizing and placing capacitors to optimally reduce losses. Neagle and Samson (1956) developed a capacitor placement approach for uniformly distributed lines and showed that the optimal capacitor location is the point on the circuit where the reactive power flow equals half of the capacitor var rating. From this, they developed the 2/3 rule for selecting and placing capacitors. For a uniformly distributed load, the optimal size capacitor is 2/3 of the var requirements of the circuit.
regards, Umesh |
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27 June 2012 05:31 AM
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This is further to my comments. Re capacitor units design, for steady loads where harmonics are not prominent , internal fuses are recommended. However, internal fuse design has a risk factor ie possibility of unit rupture . With external fuse design, the defective unit is identified easily . However , space requirement for internal fuse design is less as compared with external fuse design.
regards, Umesh |
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pole mounted capacitor bank
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