Distributed generation embedded In the Iraqi power grid

الملخص EN

Recently, there has been great interest in the integration of distributed generation units at the distribution level.

This requires new analysis tools for understanding system performance.

Installing Distribution Generation (DG) in the distribution level has positive impacts on the system voltage profile as well on the substation’s capacity.

However the extent of such benefits depends greatly of the DG size and location.

In this work, investigation of adding diesel units regarded as distributed generators at the distribution voltage levels were done.

These investigations dealt with the impact of the units addition on the Iraqi grid power flow and short circuit levels.

This work is done by using PSS / E program (Power System Simulation for Engineering), A sample from substations (with fuel and space availability ) of the Baghdad area were considered for the diesel units addition, in order to find recommendations for the voltage level to connect these units to it.

The extension in mind was to develop a quick rule of thumb in order to decide where to add the DG units.

This of course with no regard to the unit size as it is limited by the Short Circuit Level (SCL) and economic considerations.

IEEEstandard systems ere considered here with the development of Matlab routines for the simulation and calculations required.

A novel quick criterion as where to add the distributed generation to minimize loss was proved.

This state’s “add the units at the lowest short circuit level bus, i.e., at the bus of highest therein impedance”.