Paper Title
Performance Evaluation Of D-Statcom For Voltage Fluctuations In Power Distribution System

As demand of quality and reliability of electric power is continuously increasing, Power Quality has now become a important aspect in the current power scenario. Power quality determines quality and ability of electric power available at the consumer end. Maintaining voltage, frequency and phase to desired level allows electrical systems to provide quality and reliability of power without considerable loss of performance or life. poor power quality can be caused due to failure of loads and sudden switching of heavy electrical loads in the network, which mainly result in voltage sag and swell , disturbances in loads may also results in voltage fluctuation. However voltage flicker and interruptions are the most common problem which effects power quality. Voltage fluctuation is considered one of the most important power quality disturbances due to its greater frequency of occurrence as compared with other power quality problem. This problem can be compensated to greater extend by using Flexible AC Transmission Systems (FACTS) like STATCOM, UPFC , DVR etc. Out of which STATCOM also known as a "static synchronous condenser" ("STATCON"), gives better performance than SVC. It is based on a power electronics voltage-source converter VSC it can supply or absorb reactive power to the electrical network. If it is connected to a source of power it can also provide active power. If this stat com is used in distribution network it can be called as D-Stat com (Distribution Static Compensator). D- STATCOM is a shunt device which is generally used to solve power quality problems in distribution systems by injecting current. It is used to improve power factor, maintain constant distribution voltage and eliminate harmonics in a distribution network. In addition to this a case study is planned taking the parameter of industrial load. This work describes the working of STATCOM to provides voltage support to sensitive loads and will be simulated by using MATLAB/SIMULINK. The control approach presented will be able to compensate for any type of voltage sags and swells Keywords –Statcom, Matlab, Voltage Sag, Voltage Swell, Spvm