A method for optimizing the capacity configuration of a combined cooling, heating and power system considering a translatable load

Abstract

The invention discloses a method for optimizing the capacity configuration of a combined cooling, heating and power system considering a translatable load, which relates to the field of micro-grid design and planning. The invention adopts the pumped storage energy as the energy storage device of the system, and optimizes the capacity allocation method of the cogeneration system considering the energy management of the load side. Firstly, according to the translatable characteristics of the thermoelectric load, the energy management model of the user side is established, which takes into account the matching degree of the output of the distributed generation and the power demand of the user side, and the matching degree of the thermoelectric ratio of the energy supply side and the user side. A comprehensive index model of combined cooling, heating and power system considering economy and environmental protection is proposed, and the capacity of each equipment is optimized by particle swarm optimization algorithm. The simulation results show that the combined cooling, heating and power system can cut the peak and fill the valley of the distributed power output and reduce the comprehensive cost of the system after the load shifting and the introduction of pumped storage device, and the effectiveness of the model is verified.

Description

technical field [0001] The invention relates to the field of micro-grid design and planning, in particular to a capacity optimization configuration method of a combined cooling, heating and power supply system that takes into account shiftable loads. Background technique [0002] With the continuous innovation and development of production technology, the requirements for power quality and power demand are also increasing. Traditional energy supply methods will use coal and other non-renewable resources as fuel to produce a large amount of harmful polluting gases, which is not conducive to the realization of an environmentally friendly society and sustainable development goals. Therefore, how to convert the production mode of electric energy, realize multi-level utilization of energy, reduce the use of coal resources, and meet the electricity demand of users has become a research hotspot of scholars from all walks of life in recent years. [0003] Microgrids with distribute...

AI Technical Summary

Problems solved by technology

However, the investment cost of the storage battery is relatively high, and its service life is directly related to the number of times and depth of charge and discharge. In the stage of large-scale design and optimization of the microgrid, only relying on the battery to cut peaks and fill valleys for the distributed power output will greatly increase the investment in the microgrid. Cost is not conducive to multi-regional or large-scale construction of micro-grids. Therefore, in some areas where the geographical environment allows, relatively low-cost equipment such as pumped storage will be used instead of batteries as energy storage devices.

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