Power Dip in HT line

-


Power Dips in  33KV LINE


Power Dips are commonly observed in HT lines despite Electricity Board is making efforts to reduce it due to diverse loading effect on Transmission and Distribution lines .

Power Fluctuations occurs due to various reasons :


  1. Sudden switching of Heavy inductive Loads.
  2. Short circuit or open circuit faults.
  3. Switching ON High Current Equipment
  4. Weather conditions
  5. Lightening.
Power Dip Effects:


  1.  Huge financial losses to Production plants , All rotating machines in plant gets interruption during power dips ..Monthly Production target gets affected due to frequent dips .
  2. Sophisticated Equipments ,Electronic Equipment gets damaged .
  3. In Software Data center , where UPS , Precise air conditioning units gets tripped causes software servers interruption  cost huge financial loss
It has effects on Hospitals , Pharmaceuticals industry, Defence etc..
  • The solution for Reducing Power Dips in 33KV HT lines is by introducing HT - AVR.


Transformer with in built HT- AVR


 HT - AVR (Automatic Voltage Regulator)


  • It is a combination of HT Avr and Standard Distribution Transformer.
  • The ht feeder from Electricity board is connected to Ht AVR any dip occurred in EB is stabilised in HT AVR and stabilised HT voltage given to distribution transformer output we get stabilise Lt voltage ..
  • There is also Built in HT AVR transformer ..





Block Diagram of HT AVR 





          Applications :


  1. STEEL PLANTS , ROLLING MILLS
  2. DATA CENTERS
  3. CEMENT , LEATHER , PAPER INDUSTRIES
  4. HOSPITALS 
  5. PHARMACEUTICALS
  6. DEFENCE
  7. TELECOMMUNICATION
  8. ELECTRONIC BASED INDUSTRIES..

  • BUILT IN HT AVR TRANSFORMER MANUFACTURER : INDIAN TRANSFORMERS & ELECTRICALS .


Image result for the end

Comments

Post a Comment

Popular posts from this blog

ACB Tripping settings

-
Image
ACB tripping settings   Acb has 6 adjustable tripping settings 1 Long time delay (Tr ) 2 Short time delay( Tsd ) 3 Earth fault delay (Tg) 4 Long time (Ir) 5 Short time (Isd) 6 Earth Fault (Ig) Long time is for maximum overload capacity . Short time is for short circuit current Earth fault is for earth fault current . As per thumb Rule : 1. Long time set at 0.8 means 80% of full load current .Until this level of current  breaker carry without tripping  . Above 0.8 Acb trips. Long time delay causes the breaker to wait for certain time to allow heavy temporary inrush currents to pass away. Generally long time delay is set at  4 Sec. 2. Short time set at 0.6 means  60% of full load current . It determines the Amount of Current the Breaker will carry for short time period.  Generally short time delay set at 0.2 sec. 3. Earth Fault set at 0.3 or 30% of  fault current . It controls the amount of Ground Fault current that will cause the breaker to interrupt the cir
Read more

HIGHER EFFICIENCY MOTORS (HEM)

-
Image
Super premium Efficiency (IE4) motors  IE4 MOTOR The higher price of the IE4 motors is due to :  1. the use of high-quality materials and optimization of assembly and design of these motors to achieve higher efficiencies upto 97% . 2.  Large-diameter copper wires and more quantity of aluminum are used in rotors of these motors to reduce the resistance losses.  3. An optimized cooling fan is also used to reduce the winding losses. 4. use of advanced technologies like diecast copper rotors enables achieving higher efficiencies in the same frame size. The use of the high-quality, expensive materials increases the overall cost of this type of motors. adoption of energy efficient technologies to reduce their energy consumption and carbon emission. 5. Stator and Rotor I2R losses: Stator and Rotor I²R losses appear when heat is generated by resistance from current flowing in the stator windings, rotor conductor bars. These are major losses, typically account for 55% to 60% of tota
Read more

Transformer Magnetic Oil Gauge Indicator

-
Image
conservator tank oil level (Mog) The MOG  (Magnetic Oil Gauge)  is a device by which we can supervise the level of oil inside the tank or conservator of power transformer and also gives us an alert low oil level indication .  A decrease in level of Transformer oil in Conservator is an indication of leak and therefore MOG level is an important parameter to be monitored. Practically under running condition oil level remains at 3/4 th level.
Read more