Hi Abdelrahman,
I assume that the “pre-built IEEE 9-bus system” you are referring to is the example model available in the following documentation:
To create and connect a 30MW PV power plant to the above bus system, please follow these steps:
- The solar power plant can be modelled using the “Solar Cell” block available in the Simscape Electrical library. You can refer to the following documentation to understand the block and its parameters:
- The solar cell characteristics must be defined in the “Block Parameters” window of the block. You can either manually set the solar cell characteristics like “Open-circuit voltage”, “Short-circuit current” or choose one of the pre-parameterized solar-cells from specific solar-cell suppliers. You can refer to the following documentation for the necessary steps:
- Once the solar cell characteristics are set, the “Panel Configuration” block parameters must be modified to achieve the necessary power from the plant. Higher the no. of series cells, higher the voltage, and higher the no. of parallel cells, higher the current. The parameters must be set depending upon the voltage and current required from the panel. You can refer to the following documentation to iteratively modify the block parameters and get the required power:
- Once the solar cell is set to generate the required power, the solar cell output must be converted to 3-phase AC before connecting it to the IEEE 9-bus system. You can refer to the following example model to understand how a 35kW solar plant is connected to a 3-phase grid:
- Once the solar cell power plant is modelled to be connected to the 3-phase grid, the three-phase AC output can be connected to the IEEE 9-bus system. The final model must be modified to accommodate the solar power plant based on the load-flow requirements in the system. You can refer to the following documentation to understand the load-flow analysis done in IEEE 9-bus systems and how to accommodate the solar power plant in the model:
I have attached an image (model.png) that shows the way the solar power plant can be connected to the 9-bus system.
I hope this answers your query.
