Yinghua Chen’s scientific contributions

The power supply company has invested a lot of money to enhance the reliability of the distribution network by improving the grid structure, increasing the level of distribution automation, and increasing the coverage of live operations. However, blind investment will cause a lot of waste of assets. In view of the current situation, this article firstly constructs a reliability calculation model based on the minimum path method, which considers the mutual influence of multiple methods. Then, from the perspective of the life cycle, a corresponding life cycle cost (LCC) model is established. Next, based on grid search, a multi-dimensional dynamic optimal configuration method of distribution network considering the full life cycle is presented. Finally, this paper takes a regional distribution network as an example, and verifies the validity of the model through simulation calculations. The research results can provide a theoretical basis for the investment of distribution network assets.

Scientific evaluation of the main transformer equipment suppliers is the premise to ensure the cost control and safe operation of the power grid. Based on the analysis of various factors affecting the main transformer equipment supplier, the evaluation index of the main transformer equipment supplier is constructed. Considering the fuzziness of the evaluation index, the index weight is determined by AHP, and the evaluation model of main transformer equipment supplier based on fuzzy comprehensive evaluation is established. The example calculation shows that the fuzzy comprehensive evaluation method can fully reveal the evaluation index information and reflect the actual situation of main transformer equipment suppliers scientifically and reasonably.

As an important state-owned energy backbone enterprise related to national energy security and the lifeline of national economy, power grid enterprises are responsible for ensuring the quality and safety of equipment and promoting the development of equipment quality. Therefore, continuously improving the quality evaluation of main transformer equipment is very important to improve the quality of power grid main transformer equipment. This paper first constructs the main transformer equipment quality evaluation index system from equipment procurement, equipment installation, equipment use and equipment decommissioning and scrapping; on this basis, the scoring method of each evaluation index is given, and the final main transformer equipment quality evaluation score is calculated by combining subjective and objective weight determination method; Finally, according to the evaluation of 500kV main transformer equipment of provincial power grid company price score, to evaluate the performance of equipment quality provided by suppliers.