transmission line based questions

-
                                       

question 3:  Series capacitor compensation in EHV Transmission line is used to
         
answer:     improves the stability of the transmission line.
                     
                 HOW?
                                           xL Is reactance on T. line 
                                           here capacitive reactance is taking also

                                             Xt =  Xl - Xc
                                           
                                           sss = 1/reactance
                                  here reactance is decreasing and sss will be increased so steady-state stability will be limited.
                                  So, for improving the stability we use a series capacitor compensation.
for improving stability we use series compensator. fault der se aayega.

 question 4:  corona loss on a particular system at 50Hz is 1Km/phase, the corona loss at 60Hz will be?
                   
           Sol:
                                  corona loss jo hota hai vo ek distance pr energy loss hota hai.
                                     corona loss proportion to (frq+25 )     
                     
                                   Pc2/Pc1= f2+25/f1+25
                                     
                                          Pc2= (60+25/50+25)*Pc1
                                               =1.3333 KW/phase      Answer
                         
                                   
                                   

Comments

Post a Comment

Popular posts from this blog

ELECTRICAL BASICS

-
PRIMARY BONDS 1. IONIC BONDS 2.COVALENT BONDS 3.METALLIC BONDS IONIC BONDS-    आयनिक  बांड  में  जालक  पोस्टिव और नेगेटिव  आयन का बना है os etcwr oS|qr LFkSfrd attraction ls ca/ks gksrs gSaA Nacl fØLVy esa nksuksa vkos’kkas ds ikl vf/kd pkTksZl gksrs gSaaA ftlls os vf/kd etcwrh ds lkFk ca/ks gksrs gSaA ftlls vk;fud ca/k bl otg ls cgqr gh etcwr gksrs gSaA etcwrh T;knk gS rks os brittle gksaxsA vxj mUgsa gFkkSM+s ls ihVk tk;s rks leku vkos’k ,d lkFk vk tkrs gSaA ftlls riplusion force gksus ls os fØLVy VwV tkrs gSaaA  Covalent bond- bl ca/k ls atom tkyd ls tqM+s jgrs gSaA These atom interlock by a network of covalent bond produce a cystal which is considered to be a single giant molecule. ftlls ;s ca/k etcwr gksrs gSaA vkSj budh xyukad vf/kd gksrk gSA oS|qr pkydrk ca/k ds etcwr gksus ls T;knk gksrh gSA vkorZ lkj.kh esa Åij ls uhps dh vksj tkus ij   c<+rh tkrh gSA  METALLIC BOND- The crystal consist of atoms pre...
Read more

WHAT IS REACTIVE POWER?

-
While the real or active power is the energy supplied to run a motor, heat a home, or illuminate an electric light bulb, reactive power provides the important function of regulating the voltage thereby to helping to move power effectively through the utility grid and transmission lines to where it is required by the load.                                                                     रिएक्टिव पावर वो पावर है जो वोल्टेज को पूरा करता है जितने की मांग होती है लोड को.   example : when we on  the हैवी लोड component it requires the component to  be stable position .THIS REQUIREMENT IS FULFILL BY REACTIVE POWER                     REACTIVE POWER IN NUMERICAL FORM.                           ...
Read more