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The main aim of this paper is the voltage regulation which is one of the most important operational requirement in power network at both transmission and distribution levels. Whenever there is a penetration of photovoltaic cell power to the low voltage distributed grid, there occur the problem of mismatch in voltage and frequency in the network, perhaps caused by non linear loads, generating harmonics. In this paper one of the FACTS controller devices D-STATCOM is used to improve the voltage regulation thereby the power system stability. The above proposed model has been analysed under various operating conditions and the performance of the model is evaluated using MATLAB SIMULINK software. The Simulink results are evaluated and the effectiveness of the given system is established.