Hu Wang

Energy storage projects have a broad application background in the electric power system due to their particularity of separating the production and consumption of electric energy from time and space. As one of the key technologies to support a high proportion of renewable energy system, the scientific evaluation method is an important basis to measure its value. This paper constructs a planning model of energy storage project based on multi-dimensional value power generation enterprises. The method model first selects primary indexes from economy, reliability and green development; then screens and reduces the redundant indexes based on the variation characteristics and collaborative coupling degree between indexes; constructs intuitive judgment matrix, calculates the comprehensive weight coefficient; and finally calculates the system value of different energy storage configuration schemes. The maximum system value is the best energy storage project planning and configuration scheme.

With the popularization of integrated circuits, MEMS, and portable electronic devices, chemical batteries have many disadvantages as the main energy supply method, such as large size, high quality, and limited energy supply life, requiring regular replacement, resulting in waste of materials, environmental pollution, and other issues. From the above reasons, energy harvesting technology plays an important role in improving the efficiency and life of electronic equipment. In order to explore the influence of the bimorph piezoelectric vibrator’s structural parameters on the power generation capacity, this paper establishes a cantilever beam rectangular bimorph piezoelectric vibrator power generation model, derives the mathematical expression of the bimorph piezoelectric vibrator power generation, and determines the parameter factors that affect the power generation effect. Using MATLAB simulation analysis to obtain the influence relationship curve of system output voltage and structural parameters, the experiment tests the influence law of output voltage and thickness ratio, width‐to‐length ratio, and Young’s modulus ratio; the test results are consistent with the theoretical analysis, verifying the theory and the correctness of the analysis. The results show that when the thickness ratio is 0.58 and the width‐to‐length ratio is 1, the power generation effect of the piezoelectric vibrator is the best to reach 14.5V; the power generation capacity of the transducer is inversely proportional to Young’s modulus ratio. This research provides a new idea for the popularization of integrated circuits, MEMS, and portable electronic devices.