- Distribution Generator Interconnection Impact Study
Our team performed a system impact study for the distributed energy resources (DER) in the DTE Energy distribution system and subtransmission system. The main technology used for the DER was photovoltaic solar.
- Steady state load flow analysis
- Short circuit analysis
- Voltage flicker analysis
- Harmonics analysis
- Transient stability analysis
- Cost estimate
Our team is providing ongoing support for the DTE’s distribution and subtransmission generator interconnection impact studies. The purpose is to identify system impacts that may have been associated with the interconnection of the DER.
CYME or PSS/E was used depends on the voltage level of the study system. Before the system impact study, the base study model was reviewed and updated to represent appropriate existing system condition. Different seasonal cases were used for the simulation.
The system impact study includes steady state load flow, short circuit, voltage flicker, harmonics, protection coordination and transient stability analysis. DER’s adverse impact was studied individually based on its queue position.
Potential adverse impact of DER interconnection was identified and mitigation options were tested for its performance. The study findings were discussed with the DTE team, and the final mitigation option was used for cost estimate.
- 4.8-kV, 13.2-kV and 40-kV interconnection
- Full system impact study including steady state load flow, short circuit, voltage flicker, harmonics, protection coordination, transient stability analysis