Research on bearing capacity evaluation method of distributed new energy in distribution network based on improved grey correlation degree method
In the context of the development of"dual carbon"goals and the construction of new power systems,the large scale integra-tion of distributed new energy into the power grid has brought about reverse power flow,voltage fluctuations,frequency imbalances and other problems that affect the safe and stable operation of the power grid.Therefore,a distribution network distributed new energy carry-ing capacity assessment method based on the improved gray correlation method was proposed.First,conduct thermal stability assess-ment,check short-circuit current,voltage deviation and harmonics,and initially classify carrying capacity levels;second,establish dis-tributed new energy carrying capacity assessment indicators covering the three dimensions of high-quality power supply,safe operation and reliable consumption;then,the improved gray correlation method is used for comprehensive evaluation to quantify the distributed new energy carrying capacity score of the distribution network;finally,the application is carried out with specific distribution network lines in a province,and the example effectively verifies the applicability and feasibility of the method proposed in this article.Implemen-tation can meet the needs of large-scale assessment at the distribution network level,and further provide scientific suggestions for the ac-cess and subsequent planning and layout of distributed new energy.
distribution networkdistributed new energybearing capacity evaluationcomprehensive evaluation
万方数据
维普
