Why is energy supply important in a DC substation?

Since the DC system supplying specially relay protection, control, and interlocking circuits is of paramount importance to the substation’s reliable and safe operation, the energy supply has to be always available.

Do portable substations use DC energy?

While most devices and consumer electronics rely on AC energy for power, portable substations continue to operate on DC energy. DC supply has been widely used in substations and portable power applications for many years. The primary reason for using a DC supply in substations is to ensure a continuous power supply throughout the control circuit.

What is the role of DC supply in substations?

DC supply in substations plays the role of a reliable source for current supply in the control circuit. It is obtained from the battery, which can store electricity power and continuously supply electricity till it’s not discharged. This makes DC supply an essential component for backup power in substations.

How many DC systems can a power substation have?

A power substation can have one or several DC systems. Factors affecting the number of systems are the need for more than one voltage level and the need for duplicating systems. Today, normal DC auxiliary supply systems in power substations are operating either on the 110 V or 220 V level, though lower levels exist.

Which charger supplies DC power to the electrical substation?

So in normal conditions, it is the charger that supplies DC power to protection, communication, control, and measurement devices running in the Electrical substation & not the battery bank. 3. D-C-D-B: DC Distribution Board

What are the uses of DC supply in a power station?

In a power substation, DC supply is used for opening and closing circuit breakers, activating protective relays, isolators, indicator lights, alarm circuits, PLCC (POWER LINE CARRIER COMMUNICATION) panels, and control room emergency lights. Protective devices respond more immediately to DC supply compared to AC.