Why High Voltage Transmission is Needed Between Substations
The Main Reason for High Voltage Transmission is to amplify the effectivity and maintain it provident. When transmission of Electricity is carried out over lengthy distances, its takes place alongside with voltage drop due to a range of losses upset alongside the path. With the help of High Voltage Transmission, we can limit these losses as nicely as the freights concerned in the captain and accordingly enhance the effectivity of strength transmission and maintain it provident.
Electrical Masterminds round the world constantly reflect on consideration on factors like voltage needed to be transmitted to the give up substation and the distance to be defended for calculating the foremost transmission voltage.
Now, to be lesser specific, let us seize it in detail.
Why High Voltage Transmission is Needed
The community of Power Transmission need to have effectiveness and protection compliance with price effectiveness. In order to misbehave with below conditions, Electric electricity transmission is carried out at inordinate voltage to gain following
• Minimize the Power Losses.
• Minimize the price in energy transmission.
Minimize Power Losses
The conductive direction in a transmission line is generally made up of Aluminum (Al), Bobby (Cu) or its blends. It’s the resistance of the captain that has the most donation in the Total Power Loss. The frequence of loss in the Power strains due to the fact of the interior resistance of the captain is Known as Bobby Loss. The Bobby loss is calculated as ( Current) 2 x Resistance i.e. I2R.
Consequently, it may also be noted that the Power Loss that takes place in a transmission line is incontinently commensurable to the ultramodern- day flowing via it. The lesser the voltage will be the lower will be the ultramodern and the lower the present day will be the lower will be the strength loss.
This is the reason, the line voltage is elevated to drop slice- edge (and eventually the Power loss) at some stage in Power transmission. However, there will be redundant electricity loss, If we will transmit the equal electricity at a drop voltage to the similar distance.
Let us seize it advanced with some exemplifications.
Exemplifications of How to Calculate Power Loss
Let us anticipate that we want to transmit 200KW of electricity to a distance of ‘X’ kms. The inner resistance of the captain for the‘ X’ kms is 1 ohm. Now, we will calculate and estimate the strength loss going on right then when the stated electricity is transmitted at voltage ranges of a thousand volts and ten thousand volts.
Power Loss at a thousand Volts Transmission
As we know, Current via the captain is
= 200 Amps
Thus, Bobby will be damaged in the transmission
= l2 R
= (200) 2 X 1
= 40000 W
Power Loss at 10000 Volts Transmission
Current thru the captain is
= 200 Amps
Thus, Bobby Loss in the transmission will be
= l2 R
= (20) 2 X 1
= 400 W
= 0.4 KW
Comparison of power loss in 1000v and 10000v transmission
When the Power transmission is carried out at a drop voltage (1000v), the strength loss is forty KW whereas when the Power transmission is carried out at a lesser voltage (10000v), the energy loss is0.4 KW. The electricity loss at some point of High Voltage transmission is a lot drop in discrepancy to low voltage transmission.
Thus, it may also be appertained to that we can drop the energy loss by using transmitting the equal electricity from a Power Grid to the check substation with High Voltage ( power) Transmission. Reducing losses reduces voltage drop and improves voltage regulation.
Minimize the Cost in Power Transmission
The dimension of captain in transmission line relies upon on the ultramodern vary it has to carry. It’s the present day that defines what need to be the go area of the conducting line. However, the move part of the captain needed will be large than the the pass area of the captain needed for transmission of strength at lesser voltage position, If a stated extent of electricity is transmitting at a drop voltage position.
Thus, the inordinate voltage strength transmission helps in lowering the extent of captain needed. It desires no calculation that by using lowering the volume of captain to be used, High Voltage Transmission reduces the value involved.