【作者】 尹玉芬；

【导师】 文福拴； 骆华；

【作者基本信息】 华南理工大学 ， 电气工程， 2010， 硕士

【摘要】 随着经济的高速发展,地区电力系统最大负荷持续较快增长,峰谷差逐步增大,电力供需矛盾也趋于增加,负荷高峰时期电力缺口非常明显,给系统安全稳定运行带来很大威胁,也给电力负荷分析预测和电力营销分析带来了许多困难,因此,对负荷特性进行分析,同时分析总结影响负荷特性的主要因素,把握地区电力系统负荷特性的变化规律,在此基础上开展有针对性的需求侧管理研究,进而实施有效的电力负荷调控措施,对提高用电效率,深入推进低碳经济,具有十分重要的意义。为了合理描述电力系统负荷随时间变化的特性,常常采用一些特定的负荷特性曲线及指标参数来衡量,本文论述了常用的负荷特性指标。以东莞电力负荷实测数据为例,采用指标法、曲线法和比较法,分析了年、月、典型日的负荷特性,进而深入探讨了东莞地区典型行业的负荷特性,得到了有意义的结论。总结了影响负荷特性指标的主要因素,包括经济发展水平及经济结构调整、收入水平及生活水平的提高、电价变化、重大节假日、电力供应、需求侧管理措施、气象条件等七个方面,并对负荷与气温的相关性进行分析,定量分析了气温对地区电网负荷特性的影响,分析结果对掌握地区电力系统负荷变化规律和发展趋势具有一定的指导意义。根据地区电力系统的负荷特性,研究了可中断负荷管理、绿色照明和蓄冷技术的应用等需求侧管理措施,以改善负荷特性,实现调节负荷的目标。以东莞的行业用电情况为例,探讨了造纸及纸制品业和电子行业这两个重点耗能行业提高电能利用率的途径,以其移峰填谷,减少用电峰谷差,降低电力最大负荷,提高电能利用率,改善电力系统安全性和经济性。更多还原

【Abstract】 With the fast development of economics, the peak load in a regional power system has been keeping at a quick growing trend, while the gap between the peak and valley loads is becoming larger as well. The imbalance between the supply and demand has steadily become significant, and this has resulted in negative impacts on the security and stability of the power system concerned, and at the same time, the analysis and prediction of the maximum power load and the marketing of the energy are becoming more diffcicult. Given this background, analyzing the load characteristics while summarizing the factors that have impacts on the characteristics, grasping the pattern of the load characteristics of the regional power system and on this basis carrying out researches on the demand side management to effectively regulate system load, are all vital for improving the efficiency and eventually ensuring the security and economics of the regional power system.In this thesis, some specified load indicators and related index parameters are clarified in order to accurately represent the time-varying characteristics of the system load. Based on the actual data of Dongguan regional power system, the index method, curve method and comparative method are employed to elaborate the features of the annual, monthly and daily power loads in Dongguan. Some useful conclusions are finally obtained.Some major factors involved in the index system of the load characteristics include the economic development and regulation, the improved income and living quality, fluctuations of loads, holiday effects, power supply and demand, demand side management as well as weather. Studies on the relationship between the load and climate, and the quantitative analysis of the influence of the climate on the system load are instrumental to form a reasonable understanding of the regular pattern and trend of the regional power system.Studies on the interruptible load management, green lightening and cooling storage technology, which are on the basis of load characteristics of the regional power system, could help to improve the power system operation, and to realize load regulation. According to the power usage of this local business, an effort is made to discuss the possible ways to improve the efficiency of the power consumption of paper manufacturing and electronics and to lead these major consumers to rationally allocate of power consumption. On the other hand, employing reasonable power storage means could narrow the gap of the peak and valley. As the result, the maximum power demand could be decreased, and the efficiency improved, and eventually the security and economics of the regional power system maintained.更多还原