What is meant by doubling effect in power system?

What is meant by doubling effect in power system?

In about half a cycle after switch closure, the resultant current is twice the peak value of forced current. This is known as doubling effect.

What is doubling effect in a transmission line?

Doubling effect If a symmetrical fault occurs when the voltage wave is going through zero then the maximum momentary short circuit current will be double the value of maximum symmetrical short circuit current. This effect is called doubling effect.

What is rupturing capacity of circuit breaker?

Rupturing capacity of a fuse means the maximum power a circuit breaker can interrupt under a fault. It is usually expressed in Mega Volt Ampere (MVA) and it is then the product of the rated breaking current in kilo amperes and rated voltage expressed in kilovolts.

What is momentary short circuit current?

Momentary Duty: Is the Maximum RMS asymmetrical current that the circuit breaker will withstand including short-circuits from all sources and motors and the DC component. This rating is independent of the operating voltage.

Why are series reactor used?

Series reactors are used as current limiting reactors to increase the impedance of a system. They are also used for neutral earthing. Such reactors are also used to limit the starting currents of synchronous electric motors and to compensate reactive power in order to improve the transmission capacity of power lines.

What is transient in RL circuit?

• Transient – a circuit changes from one DC configuration to another. DC configuration (a source value changes or a switch flips). There. will be a transient interval while the voltages and currents in the inductors change.

Is it right to do load analysis before fault analysis?

A fault study can only be performed while Simulator is in run mode, since the load flow must be validated and solved before a fault study can be calculated.

What rating makes current?

The rated short-circuit making current of a circuit-breaker is the peak value of first current loop of short-circuit current (Ipk) which the circuit-breaker is capable of making at its rated voltage.

What is AIC rating?

AIC stands for Ampere Interrupting Capacity. The AIC rating indicates the maximum fault current (in amps) that an overcurrent protection device (circuit breaker, fuse, etc.) will safely clear when a fault is applied at the load side of the overcurrent protection device.

What is fault duty kA?

kA rating of an MCB or an MCCB is the maximum current it can safely interrupt in case of a short circuit. If the current goes beyond this value, the circuit breaker could be damaged. kA rating is known as the short circuit withstand capacity or ultimate breaking capacity of a circuit breaker.

Why do we use capacitors in series?

Series capacitors are used to compensate the inductance of transmission line. They will increase the transmission capacity and the stability of the line. These are also used to share the load between parallel lines. To compensate this, a shunt capacitor is connected which draws current leading the source voltage.

What is meant by the principle of double effect?

According to the principle of double effect, sometimes it is permissible to cause a harm as a side effect (or “double effect”) of bringing about a good result even though it would not be permissible to cause such a harm as a means to bringing about the same good end.

What is the moral tradition of double effect?

First, we will discuss the moral tradition itself. Then, we will briefly say what it is not. The Principle of Double Effect comes into play when a given moral act has both a good effect and an evil effect. This principle allows us to determine if such an act may be chosen without falling into sin.

What is double effect in medical ethics?

double effect. Medical ethics The use in terminally ill Pts of sedative and analgesic dosages high enough to relieve both pain and suffering–the ‘good’ effect, and hasten their demise–the ‘bad’ effect.

What conditions must be satisfied for double effect to apply?

Proponents of the principle of double effect have always acknowledged that a proportionality condition must be satisfied when double effect is applied, but this condition typically requires only that the good effect outweigh the foreseen bad effect or that there be sufficient reason for causing the bad effect.