研究目的
To develop a practical and simplified analytical approach to conservatively estimate a utility distribution feeder’s accommodation limits for integrating large-scale PV and ESS without causing protection problems.
研究成果
The proposed analytical approach is accurate in estimating the feeder’s accommodation limits for integrating large-scale PV and ESS, with findings showing close agreement between theoretical predictions and simulation results. The approach provides insights into relay settings and simplifies the estimation process with reasonable approximations under conservative settings.
研究不足
The study focuses on relay insensitivity and sympathetic tripping problems under conservative settings and does not address all potential protection coordination issues. The analysis is validated against a specific utility distribution circuit model, which may limit its generalizability.
1：Experimental Design and Method Selection:
The study uses an analytical approach to estimate feeder accommodation limits for PV and ESS integration, considering both symmetrical and unsymmetrical fault conditions.
2：Sample Selection and Data Sources:
The study validates the analytical approach using simulations of an actual detailed distribution circuit model from a utility.
3：List of Experimental Equipment and Materials:
The study utilizes OpenDSS for simulation studies, with generator and storage objects for simulating PV and ESS.
4：Experimental Procedures and Operational Workflow:
The study involves simulating various fault conditions and PV/ESS sizes to validate the analytical approach.
5：Data Analysis Methods:
The study compares the feeder accommodation limits obtained from the analytical approach with those from simulations to validate the approach.
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