I am investigating the effect and control of Large system disturbances on the reliability of power system supply. This is as a result of novel integration of distributed generation in the grid network
Depends on the the type of distributed generation (DG) incorporated. For example, the scenarios are likely to be different for PV-based and different types of wind turbine based sources. If your question is specific, only then you should expect some specific answer. In general, small disturbance stability has been an active research area. The instability mitigation process is another research area.
There are different distributed generation incorporation, but the study aimed to study the different scenarios and then make recommendations. My friend Ahmed, you can proffer your solutions based on any one or the combination.
Need to include the cost analysis, too, if possible. Which simulation environment are u using? If it is MATLAB, it would take days to complete the model and analyze the outcome. However, writing down your own code (in MATLAB) will help you immensely in debugging.
Regarding the preference in using the type of DG, I would suggest you to look for some articles on hybrid generation.
Here are some:
1. Generation unit sizing and cost analysis for stand-alone wind, photovoltaic, and hybrid wind/PV systems, W. D. Kellogg; M. H. Nehrir; G. Venkataramanan; V. Gerez IEEE Transactions on Energy Conversion
2. Economic Analysis and Power Management of a Small autonomous Hybrid Power System (SAHPS) Using Biogeography Based Optimization (BBO) Algorithm- Ajay Kumar Bansal; Rajesh Kumar; R. A. Gupta, IEEE Transactions on Smart Grid
3. Optimal Sizing of Hybrid Wind/PV/Diesel Generation in a Stand-Alone Power System Using Markov-Based Genetic Algorithm
Ying-Yi Hong; Ruo-Chen Lian, IEEE Transactions on Power Delivery
4. A reliable methodology based on mine blast optimization algorithm for optimal sizing of hybrid PV-wind-FC system for remote area in Egypt, Ahmed Fathy, Renewable Energy,
5. Utility integration of PV-wind-fuel cell hybrid distributed generation systems under variable load demands, Ahmad Eid , International Journal of Electrical Power & Energy Systems,
6. Comparative impacts of wind and photovoltaic generation on energy storage for small islanded electricity systems, I.G. Mason, Renewable Energy