2019 Innovations in Power and Advanced Computing Technologies (i-PACT) | 2019
Impact of Increased Penetration of Photovoltaic Sources on Small-Signal Stability of Hybrid and Multi-area Power Systems
Abstract
With the large scale penetration of photovoltaic sources into power systems, it is of critical importance to investigate the influence of PV generation on the small signal stability of power systems. This paper provides a comparative study on the dynamic performance of the power system when PV coordinates with various conventional generating sources such as non-reheat thermal unit, reheat thermal unit and gas generation unit. Power system nonlinearities such as governor dead band, generation rate constraints and delay in secondary control action have been included in the linearized model of the system to make them as realistic as possible. To obtain frequency and tie-line flow with minimum deviation and lower settling time integral gain of controller areas tuned using particle swarm optimisation technique. Finally, eigenvalue analysis is carried out to analyse the effect of the critical model of the system at different PV penetration levels.