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2 Electrical Power Quality and Utilisation. Journal

2 2009

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Development of Techno-Economical Objective Function for Supercapacitors Energy Storage System Implemented in Distribution System

Sahay K., Dwivedi B.

Electrical Power Quality and Utilisation. Journal

2009

Vol. 15, iss. 2

29--33

The development and advancement in storage technologies and custom power devices technologies are making the application of supercapacitors energy storage system a potentially viable solution for modern power distribution system application, permitting the system to be operated in more flexible and controllable manner. The supercapacitors energy storage system considered is supposed primarily for limiting the monthly subscribed demand levels, energy cost saving, for supply of energy in case of instantaneous need and long duration back up purpose. This paper presents the development of techno-economical multi-objective function for SCESS implemented in distribution system considering the constraints and their impact on optimization of net present value.

Design and Analysis of Supercapacitors Energy Storage System for Energy Stabilization of Distribution Network

Sahay K., Dwivedi B.

Electrical Power Quality and Utilisation. Journal

2009

Vol. 15, iss. 1

25--32

Supercapacitors are the devices which can be store significant amounts of energy and quickly release it, their main application is for short term power compensation application where they can release a large amount of energy quickly and then can he recharged with smaller current. In this paper the use of Supercapacitors bank is explored for energy stabilisation and maintaining the voltage profile of the distribution system at the load point. The proposed supercapacitor bank is designed to improve the voltage profile of a distribution system by supplying the energy in case of demand and recharging the Supercapacitors bank in valley period. The designed bank is of 50 k\Vh{180 MJ) of energy, 440 V voltages and peak power of 30 kVV capacities for supply of energy in case of instantaneous need. The result shows that the SCESS can supply the instantaneous power for the back up the loads even though the voltage may drop up to 100 V; this SCESS can back up the load from 1.60-9.9974 hours depending upon the power demand while maintaining the minimum discharge voltage ratio and availability of useful energy.