研究目的
To minimize the operation cost and total power losses in the distribution grid by coordinating the optimal dispatch of photovoltaic units and the operation of power electronic transformers (PETs).
研究成果
Proper reformation of the distribution grid with PETs can play an important role in integrating large-scale renewable energy resources such as photovoltaic and maximizing the economic and environmental benefits. The proposed optimal scheduling for integrating large-scale RES into the power grid can be effectively communicated to practicing engineers and applied to demonstration project in real-world setups.
研究不足
The study is limited to a 33-bus distribution network and may not be directly applicable to larger or more complex systems without further validation.
1：Experimental Design and Method Selection:
A two-stage optimization model is established to search for the best configuration and operation of distribution grid with updated PET feeders and photovoltaic inverters. NSGA-II algorithm is adopted to solve the proposed multi-objective optimization.
2：Sample Selection and Data Sources:
A 33-bus distribution network is adopted for simulation studies with PV units installed onto four buses.
3：List of Experimental Equipment and Materials:
Power electronic transformer (PET), photovoltaic inverters.
4：Experimental Procedures and Operational Workflow:
The optimal configuration of PETs is given in the upper stage and given to the lower stage as input parameters to regulate the active and reactive power of photovoltaic inverters.
5：Data Analysis Methods:
The synergy effects of the proposed PET-aided RES optimal scheduling mechanism is evaluated in terms of RES penetration level, voltage profiles, network losses.
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