SUMMARYWith the fast-paced changing technologies in the power industry, new power references addressing new technologies are coming to the market. So there is an urgent need to keep track of international experiences and activities taking place in the field of modern power system restoration problem. This paper gives a bibliographic survey, mathematical formulations, and general background of research and developments in the field of restoration problem for past 35 years, based on more than 150 published articles. The collected literature has been divided into many sections, so that new researchers do not face any difficulty in carrying out research in the area of next-generation restoration problem under any environment.

The power quality service is necessary demand in near future of the customer's. The fast service restoration has been a hot issue with fault tolerable distribution system in maintaining power quality. When a fault takes place, it will result in isolation of some portion of the feeder downstream from the affected areas. So lhis paper describes a high speed-sWrtehhg algorithm for a distribution network that has been developed with the aim of reducing the time of the restoration and " i z e s the amount of power restored. The algorithm developed isolates only the fault section and restores the power supply to normal sections after a fault takes place, The algorithm developed is based on Network reduction and determination of the optimal confiiuratlon of the reduced network by using DIJKSTA'S algorithm. The developed algorithm is tested on a standard system and then it b applied €or practical systems.

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This paper proposes an efficient methodology for optimal location and sizing of static shunt capacitors in radial distribution systems to reduce real power loss, improve voltage profile and to maximize total cost saving. The solution methodology has two parts: In part one, the buses to be compensated is identified using loss sensitivity factors. In the second part, modified artificial bee colony algorithm is used to select the optimal size of capacitors to be placed at the candidate buses. In addition the number of candidate buses is selected by searching for maximum cost saving. The results of proposed approach have been presented and compared with previous methods reported in the literature using four test cases. The presented results indicate the efficiency and quality of solution.