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For high power applications _________ are used as static switches whereas for low power applications __________ are used.
For high power applications, thyristors are used as static switches, whereas for low power applications, transistors are used.
For high power applications, thyristors are used as static switches, whereas for low power applications, transistors are used.
See lessTwo six pulse converters used for bipolar HVDC transmission system, are rated at 1000 MW, +- 200 kV. Find the rms current rating required for the SCRs.
To find the RMS current rating required for the SCRs in a bipolar HVDC transmission system with two six-pulse converters rated at 1000 MW and ±200 kV, we can use the following relationship.For a six-pulse converter, the output power (P) is given by the formula:[ P = frac{3 sqrt{3}}{2} V_{dc} I_{dc}Read more
To find the RMS current rating required for the SCRs in a bipolar HVDC transmission system with two six-pulse converters rated at 1000 MW and ±200 kV, we can use the following relationship.
For a six-pulse converter, the output power (P) is given by the formula:
[ P = frac{3 sqrt{3}}{2} V_{dc} I_{dc} ]
Where:
– ( P ) = output power in watts (1000 MW = ( 1000 times 10^6 ) W)
– ( V_{dc} ) = DC voltage (±200 kV = 200,000 V)
– ( I_{dc} ) = DC current (the current we want to find)
### Step 1: Find the DC current (I_dc)
Rearranging the formula to solve for ( I_{dc} ):
[ I_{dc} = frac{P}{frac{3 sqrt{3}}{2} V_{dc}} ]
Substituting the values in:
[ I_{dc} = frac{1000 times 10^6}{frac{3 sqrt{3}}{2} times 200,000} ]
Calculating ( frac{3 sqrt{3}}{2} ):
[ frac{3 sqrt{3}}{2} approx 2.598
See lessTwo six pulse converters used for bipolar HVDC transmission system, are rated at 1000 MW, +- 200 kV. Find the dc current in the transmission line.
To find the DC current in the transmission line for a bipolar HVDC (High Voltage Direct Current) transmission system with the given ratings, we can use the formula:[P = V times I]Where:- ( P ) is the power in watts (W)- ( V ) is the voltage in volts (V)- ( I ) is the current in amperes (A)Since theRead more
To find the DC current in the transmission line for a bipolar HVDC (High Voltage Direct Current) transmission system with the given ratings, we can use the formula:
[
P = V times I
]
Where:
– ( P ) is the power in watts (W)
– ( V ) is the voltage in volts (V)
– ( I ) is the current in amperes (A)
Since the system is rated at 1000 MW (which is ( 1000 times 10^6 ) W) and ±200 kV (which translates to 200,000 V), we will use the absolute value for voltage, and remember that since it is a bipolar system, the total voltage across the line would be 400,000 V (200 kV per pole).
Thus, the current can be calculated as follows:
[
I = frac{P}{V}
]
Substituting the values:
[
I = frac{1000 times 10^6}{400,000}
]
Calculating this gives:
[
I = frac{1000 times 10^6}{400,000} = 2500 text{ A}
]
Therefore, the DC current in the transmission line is 2500 A.
See lessTwo six pulse converters used for bipolar HVDC transmission system, are rated at 1000 MW, +- 200 kV. What is the dc transmission voltage?
The DC transmission voltage for a bipolar HVDC system is the same as the voltage rating of one converter, which is ±200 kV. Therefore, the total DC transmission voltage, considering both poles, would be ±200 kV for each pole.DC Transmission Voltage: ±200 kV
The DC transmission voltage for a bipolar HVDC system is the same as the voltage rating of one converter, which is ±200 kV. Therefore, the total DC transmission voltage, considering both poles, would be ±200 kV for each pole.
DC Transmission Voltage: ±200 kV
See lessHVDC transmission lines are __________ as compared to HVAC lines.
HVDC transmission lines are more efficient and can transmit power over longer distances with lower losses as compared to HVAC lines.
HVDC transmission lines are more efficient and can transmit power over longer distances with lower losses as compared to HVAC lines.
See lessHVDC transmission has ___________ as compared to HVAC transmission
HVDC transmission has several advantages as compared to HVAC transmission, including lower line losses over long distances, the ability to interconnect asynchronous power systems, reduced right-of-way requirements, and improved stability. Additionally, HVDC systems can better control power flows andRead more
HVDC transmission has several advantages as compared to HVAC transmission, including lower line losses over long distances, the ability to interconnect asynchronous power systems, reduced right-of-way requirements, and improved stability. Additionally, HVDC systems can better control power flows and provide better integration of renewable energy sources.
See lessUsually __________ batteries are used in the UPS systems.
Usually lead-acid batteries are used in the UPS systems.
Usually lead-acid batteries are used in the UPS systems.
See less_________ is used for critical loads where temporary power failure can cause a great deal of inconvenience.
Uninterruptible Power Supply (UPS) is used for critical loads where temporary power failure can cause a great deal of inconvenience.
Uninterruptible Power Supply (UPS) is used for critical loads where temporary power failure can cause a great deal of inconvenience.
See lessWhich protocol is a signalling communication protocol used for controlling multimedia communication sessions?
The protocol used for controlling multimedia communication sessions is the Session Initiation Protocol (SIP).
The protocol used for controlling multimedia communication sessions is the Session Initiation Protocol (SIP).
See lessPrograms designed to perform specific tasks is known as
Software
Software
See less