Energy Efficiency Optimization of Multi-unit System with Different Devices

Abstract: The energy efficiency optimization of the power generation system and the energy efficiency optimization of the energy consumption system are unified into the same optimization problem, and a simple method to achieve energy efficiency optimization without establishing an accurate mathematical model of the system is proposed. For systems with similar energy efficiency, it is proved that the best load distribution method between equipment is to keep the operating energy efficiency of each operating device equal, Yao's theorem 1. It is proved that the optimal switching method for the number of operating units between equipment with different energy efficiency is to keep the energy efficiency of the switching point equal, or at the maximum load point of the equipment, Yao's Theorem 2. This article gives two cases, a system composed of equipment with similar efficiency and a system composed of equipment with different efficiency.