In today’s modern day and age, no one can even conceive of fulfilling any task without electricity being available. Electricity is required for everything, from keeping the water cold and the food fresh in the refrigerators to the air conditioning that is required in the summer months when the temperature gets extremely high and unbearable. Also, in the months of winter electricity is required for heating purposes.
In such a scenario, the job of those who are producing and distributing electricity becomes very vital. It is the job of the Distribution Substation to send the electricity in the right amount and the right voltage to the final consumers.
Role of the Distribution Substation
After electricity has been produced in the generating station, from there the produced electricity travels to the distribution substation where the voltage is transformed from low to high or vice-versa. Between the electricity being produced in the generating station and reaching the final consumers or the users, the electric current may flow through a number of distribution substations at different voltage levels.
A distribution substation contains transformers in order to transform voltage. Generally, a distribution substation has two kinds of transformers- a step- up transformer and the other one is the step- down transformer. As the name suggests, the step-up transformer function is to increase voltage and reduce the electric current. On the other hand, the job of the step- down transformer is to decrease the voltage and increase the electric current.
The role that the Distribution Substation plays is extremely important. They transfer the electric current from a transmission system into a distribution system. In a Distribution Substation generally there are two transmission lines that provide the input and it also contains a set of feeders that act as output. The voltage runs through the substation, and out of the feeders. It then travels to a distribution transformer and generates electricity.
It should be highly taken care of while installing commercial, industrial or residential purpose. It is regarded as the most complicated and intricate constituent of the residential or industrial purpose. If installation is not proper, whole electric functionality of the place gets hampered. Whether it’s a residential, commercial or industrial place, it needs to be installed in a proper and apt way so that the mechanism of the component is not destroyed. They play integral role among all the electric components.
Switchboard is consisted of several constituents and not only single but every single component associated to switch boards are quite necessary. Switch board are sustenance of the circuit. It is through these current is passed to the electrical wires and thus current lets the appliance gets on or off. Installation of switch board is quite necessary for the house. Furthermore it should be made sure, that switch boards are installed by only the experts, not by the amateurs.
Any ambiguity while installing the switch boards, laying the electrical wires, keeping in mind the live and earthing wire; would help in properly placing and installing the wires in every electrical appliance. Every wire must be properly placed and installed so that there is no short circuit in the switch board and in turn the wires of the appliance.
Short circuit in the wires also becomes a cause of short circuiting the appliance. Therefore, it must always be made sure that the switch boards, wired are installed only by the professionals and experts. If this complicated task is not given in the hands of the professionals and experts, but to amateur, then it may perhaps tend to cause mayhem in the house. Even a single inappropriately installed wire might become a cause of short circuit in the house.
From 3KV to 36KV switchgear system; it is categorized like medium voltage switchgear or MV switchgear. These switchgears are of various kinds. They might possibly be of outdoor type with no metal enclosure, metal enclosed indoor type, metal enclosed outdoor type, and so on. The interruption medium of this switchgear may be SF6, vacuum and oil. The main obligation and necessity of MV power network is to interrupt the current in faulty condition irrespective of what type of CB is used in the MV switchgear system. It might possibly be capable of functioning in also other conditions. Medium Voltage Switchgear ought to be highly capable of:
- Short circuit current disruption.
- Usual ON/OFF switching operation.
- Switching of capacitive and inductive currents.
- Various special applications.
All the above mentioned function ought to be carried with high degree of consistency and security.
Short Circuit Current Interruption
The main focus of circuit breaker design is that every circuit breaker ought to be capable of interrupting short circuit current with high degree of consistency and protection. The number of faulty tripping occurred in total life period of circuit breaker usually depends on the location of the system, value of environment state and system. If the tripping number is high, the outstanding alternative is vacuum circuit breaker as it may not require any maintenance till 100 faulty tripping with short circuit current till 25KA. Whilst other circuit requires maintenance after 15 to 20 faulty tripping with same short circuit CB current.
The joint substations in rural areas are more often than not of outdoor type, and the best part of them is unattended sort. Hence for this type of applications maintenance free outdoor form, medium voltage switchgear is most suitable. Porcelain clad vacuum circuit breaker meets this obligation against the customary indoor kiosks.