Stability Assessment of Grid Connected High Penetration Photovoltaic Generation
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One of the greatest renewable energy sources for the generation of electrical power is solar electric or photovoltaic technology. It is considered one of the fastest growing power generation in the world. This dissertation assumes there will be no change in the power system infrastructure except adding a large penetration of photovoltaic system in the power system grid. One of the challenges the system will face is the system stability. Stability analysis methods may be categorized into two major methods: small-signal stability and transient stability analyses. This work will focus on both types of stability. It will investigate transient stability analysis when a Photovoltiac (PV) generator contributes to the power system and study how it affects the system voltage stability margin. The proposed analysis calculates stability limitations for different penetration levels by using different voltage control technique, such as adding a static voltage compensator, and comparing the results for better performance. A decision based on the comparison can be made to determine stability of the power system. A contingency analysis is applied for the same system with unexpected line or generator outages. It also shows how that affect the number of violation on the whole system and how it reduces voltage collapse and blackouts. All proposed methods are implemented in a 55 bus system using Pladindesgn Base Software to verify the effectiveness of these analyses and are applied to a model of Buffalo Niagara Medical Campus PV insulation in Buffalo, NY.