多能源综合利用系统控制策略研究

发布时间：2018-12-18 07:14

【摘要】：能源问题已是当今世界各国普遍重视的问题，被公认为是人类面临四大生存问题之一，而随着各国工业化进程的不断发展，地球上可供人类利用的石油、煤炭、天然气等一次燃料资源日渐枯竭，能源危机已迫在眉睫，如今建筑生活热水引起的能耗经常不受到人们的重视，然而建筑生活热水负荷却占用着很大的能源消耗，人们也往往会因此付上一笔高额的费用，再加上人们的生活水平逐渐提高，这部分的费用也会逐渐增加，而随着能源的消耗，能源价格也在每年不同程度的增长，而且实行阶梯价格的范围也会越来越广。本文以长安大学—威能综合能源利用系统实验室为基础，综合了太阳能、地源热泵、燃气锅炉和电锅炉四种能源应用的原理，以西安地区为例，首先通过matlab编程，将西安水平面上的逐时太阳辐射转变成集热器在全年最佳倾角下的逐时太阳能辐射，其次分析了综合能源系统的运行模式，并以燃气锅炉和电锅炉作为辅助热源，当太阳能热水系统不能满足生活热水需求时，以同一时间段分别满足生活热水所消耗的能耗费用为能源之间相互切换的判断条件，通过某宾馆生活热水应用分析太阳能辐射量、宾馆入住率和能源价格这三种因素之间对控制策略的影响，并提出一套系统控制策略流程图，最后计算各种策略下系统一年的能耗费用，并经过经济分析表明了这种控制策略的优越性。随着能源价格增长率不同，以能源价格为依据，在不同时间段产生相同热量所对应的能源能耗费用不同，然后依据能耗费用对能源进行切换的这种想法在很大程度上能够降低运行能耗费用，但是这种能源选择的控制策略影响因素较多，还需进一步细化和完善，同时为进一步实现能源优化利用的计算机控制和管理奠定基础。
[Abstract]:The energy problem has been paid more and more attention by all countries in the world. It is recognized as one of the four survival problems facing mankind. With the continuous development of industrialization, the oil and coal on the earth can be used by human beings. Natural gas and other primary fuel resources are drying up day by day, energy crisis is imminent. Nowadays, the energy consumption caused by hot water in buildings is often ignored by people, but the load of hot water in buildings occupies a large amount of energy consumption. People tend to pay a lot of money for it, and with people's living standards rising, that part of the cost is going to go up, and with the consumption of energy, energy prices are going up at different levels every year. And the range of ladder prices will be wider and wider. Based on the laboratory of Changan University-Weineng Comprehensive Energy Utilization system, this paper integrates the principles of solar energy, ground-source heat pump, gas-fired boiler and electric boiler. Taking Xi'an area as an example, it is programmed by matlab. The hourly solar radiation from Xi'an horizontal plane is transformed into hourly solar radiation of collector at the optimum inclination angle of the year. Secondly, the operation mode of the integrated energy system is analyzed, and the gas-fired boiler and electric boiler are used as auxiliary heat source. When the solar water heating system can not meet the domestic hot water demand, the energy consumption cost of the domestic hot water consumption in the same time period is taken as the judging condition of switching between the energy sources, and the solar radiation amount is analyzed through the application of the domestic hot water in a certain hotel. The influence of the three factors of hotel occupancy rate and energy price on the control strategy is presented, and a set of system control strategy flow chart is put forward. Finally, the energy consumption cost of the system under various strategies is calculated. The economic analysis shows the superiority of the control strategy. Depending on the energy price growth rate, the energy consumption costs of generating the same amount of heat at different times are different. Then the idea of switching energy according to the cost of energy consumption can reduce the cost of running energy to a great extent, but the control strategy of this kind of energy choice has many factors, which need to be further refined and improved. At the same time, it lays a foundation for the computer control and management of energy optimization.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：F206

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