IEGC Presentation
TY B.Tech Electrical Engineering
Topic - State Transmission Utility [STU]
Roll No. 31 to 35 :-
State Transmission Utility [STU]
Introduction -
1) As per Electricity Act 2003, The State Government may notify the Board or a Government company as the State Transmission Utility.
2) It relates to the intra-state transmission system.
3) Objective of establishing state transmission utility (STU) is to ensure efficient development of economical system of intra - transmission lines.
4) STU provides non-discriminatory open access to the intra transmission system.
5) SLDC can operate under the State Transmission Utility .
Power System and Power Grid -
The power system is a network which includes generation, distribution and transmission system.
How Does the Power Grid Work?
1) The power grid delivers electricity from power plants to homes and businesses across the nation.
2) The power grid includes generator stations, transmission lines and towers, and individual consumer distribution lines.
3) The generator produces energy and it Converts energy into a high voltage for distribution.
4) Power Grid Corporation of India Ltd (PGCIL) is India's principal electric power transmission company. The company is engaged in the transmission of bulk power across different states of India. It owns and operates 90% of India's interstate and inter-regional electric power transmission system.
What is Power System
The power system is a network which consists generation, distribution and transmission system.It uses the form of energy (like coal and diesel) and converts it into electrical energy.
Structure of Power System
Generating Substation
The generator and the transformer are the main components of the generating station. The generator converts the mechanical energy into electrical energy. The mechanical energy comes from the burning of coal, gas and nuclear fuel, gas turbines, or occasionally the internal combustion engine.
Transmission Substation
The transmission lines mainly perform the two functions
1.It transports the energy from generating stations to bulk receiving stations.
2.It interconnects the two or more generating stations.The neighbouring substations are also interconnected through the transmission lines.
Sub-transmission Substation
The portion of the transmission system that connects the high voltage substations through the step-down transformer to the distribution substations is called the sub-transmission system.
The operation of the sub-transmission system is similar to that of a distribution system. Its differ from a distribution system in the following manner.
A sub-transmission system has a higher voltage level than a distribution system.
It supplies only bigger loads.
It supplies only a few substations as compared to a distribution system which supplies some loads.
Power Utility and Distribution
Distribution is the most important link in the entire power sector value chain. As the only interface between utilities and consumers, it is the cash register for the entire sector.
The responsibility of power distribution and supply of power to rural and urban consumers rests with the states. Government of India provides assistance to states through various Central Sector / centrally sponsored schemes for improving the distribution sector.
Integrated Power Development Scheme (IPDS)
Scheme approved on Nov 20, 2014
The objectives of scheme are:
Transmission Utility (STU).
generator and transformer - main components of the generating station.generator converts the mechanical energy into electrical energy.
A transmission substation connects two or more transmission lines. A transmission bus is used to distribute electric power to one or more transmission lines.
A sub-transmission system has a higher voltage level than a distribution system.It supplies only a few substations as compared to a distribution system which supplies some loads.
A distribution substation transfers power from the transmission system to the distribution system of an area.The input for a distribution substation is typically at least two transmission or subtransmission lines.
Conclusion