Answer / rk

T&D Losses= (Energy Input to feeder(Kwh)-Billed Energy to Consumer(Kwh)) / Energy Input kwh x100
Distribution Sector considered as the weakest link in the entire power sector. Transmission Losses is approximate 17% while Distribution Losses is approximate 50%.
There are two types of Transmission and Distribution Losses
Technical Losses
Non Technical Losses (Commercial Losses)

Answer / abc

There typically two types of losses in line T&D.

1. Technical Losses

The technical losses are due to energy dissipated in the conductors, equipment used for transmission line, transformer, subtransmission line and distribution line and magnetic losses in transformers.

Technical losses are normally 22.5%, and directly depend on the network characteristics and the mode of operation.

The major amount of losses in a power system is in primary and secondary distribution lines. While transmission and sub-transmission lines account for only about 30% of the total losses. Therefore the primary and secondary distribution systems must be properly planned to ensure within limits.

The unexpected load increase was reflected in the increase of technical losses above the normal level
Losses are inherent to the distribution of electricity and cannot be eliminated.
There are two Type of Technical Losses.


1. Permanent / Fixed Technical losses

Fixed losses do not vary according to current. These losses take the form of heat and noise and occur as long as a transformer is energized
Between 1/4 and 1/3 of technical losses on distribution networks are fixed losses. Fixed losses on a network can be influenced in the ways set out below
Corona Losses
Leakage Current Losses
Dielectric Losses
Open-circuit Losses
Losses caused by continuous load of measuring elements
Losses caused by continuous load of control elements

2. Variable Technical losses

Variable losses vary with the amount of electricity distributed and are, more precisely, proportional to the square of the current. Consequently, a 1% increase in current leads to an increase in losses of more than 1%.

Between 2/3 and 3/4 of technical (or physical) losses on distribution networks are variable Losses.
By increasing the cross sectional area of lines and cables for a given load, losses will fall. This leads to a direct trade-off between cost of losses and cost of capital expenditure. It has been suggested that optimal average utilization rate on a distribution network that considers the cost of losses in its design could be as low as 30 per cent.
Joule losses in lines in each voltage level
Impedance losses
Losses caused by contact resistance.

i want to learn control schedule for 11kv panel? can any one send the detailed control schedule?

0 Answers  

---

how to change the load sharing between two synchronized identical alternators when both are running with Diesel engine? assume both are feeding to same feeder?

1 Answers   BARC,

---

sir, i'm preparing for hpcl exam officer trainee pls tell me how the exam ques paper pls pls

0 Answers  

---

explain about the electrification in the Indian Railways? ie., how the power is taken and used to drive the train? explain with the block diagram??

1 Answers  

---

on which power factor synchronous motor run

2 Answers   Bhel,

---

why we can stote dc? why we cant store ac?

0 Answers  

---

is it possible to say motor horsepower number without seeing name plate(when name plate damaged)

0 Answers   Wipro,

---

can any one help me out by posting something related to rvnl interview for site engineer electrical.? what is the procedure? what kinda question they ask us? how long the interview goes? and any tips? and any thing you want to share?

1 Answers   RVNL,

---

If the (Motor control center)Panel work on field the relay used in panel in the case this will be damage and no indication provide on panel.fault occur in panel and MCB will not trip. how happen the relay damage in panel and what effect of panel.

1 Answers  

---

What technology is used in latest generators?

0 Answers   IBC,

---

What is use of 3phase instead of single phase?

12 Answers   DCM, L&T,

---

Explain Need of a starter in a dc motor.? Also explain any two starting and speed control method of dc motor?

0 Answers  

---