毕业设计外文翻译(500)------混合发电能量管理系统.doc

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毕业设计外文翻译(500)------混合发电能量管理系统,1. one preface the admixture that wind force and solar cells generate electricity to constitute generates electricity the system and is called the breeze/ light...
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1. One preface The admixture that wind force and solar cells generate electricity to constitute generates electricity the system and is called the breeze/ light to repair the system with each other, all having some common weakness because of the breeze and solar energies, such as the energy density low, the stability is bad and is subjected to the weather influence not to continue, have the strong weak conjugation, solar energy of seasonal to interrupted etc. day and night. Be generate electricity by the wind force and solar energy respectively to the power supply, the credibility of its power supply lowers consumedly.
The wind energy, solar energy has to repair sex with each other certainly, if the sun light of daytime is strong, the night breeze is many, the summer sunshine good, the breeze is weak; The spring stanza breeze of winter is strong but the sunlight is opposite weaker. Develop the wind force a solar energy to supply again to give or get an electric shock the system with each other, take into wind force and the solar energy techniques to synthesize the exploitation, thus constitute a kind of repair with each other of can scatter the new energy that cloth order, will is a new growth to order in this energy structure of century. Have the condition pass the storage battery of match the appropriate capacity or connect into the city to give or get an electric shock the conduct and actions back up power supply, can make circulate the expenses to lower consumedly, huge exaltation of the credibility of the power supply. Local mainly generate electricity to independent wind power, the light currently and the breeze a light supplies again the research of the electricity control system with each other more. In design the breeze a light generate electricity system, the design way of thinking of the widespread adoption according to load everyday total to consume the electricity quantity, and radiate the quantity from the day that the local weather data get to the capacity of the certain solar cell array, the wind power machine, then come certain can the renewable energy generate electricity the power and the storage battery capacities of control the devices, but at mix with the movement of generate electricity the system control and excellent turn the research of manage the method less.
1. 引言 风力与太阳能电池发电组成的混合发电系统又叫作风/光互补系统,由于风和太阳能都有一些共同的缺点,如能量密度低、稳定性差、 受天气影响不连续、有季节性强弱变化、太阳能日夜间断等。分别由风力和太阳能发电来供电,其供电的可靠性大大降低。 风能、太阳能具有一定的互补性,如白天太阳光强,夜晚风多,夏天日照好、风弱;冬春季节风大而阳光相对较弱。开发风力一太阳能互补发电系统,将风力与太阳能技术加以综合利用,从而构成一种互补的可分散布点的新型能源,将是本世纪能源结构中一个新的增长点。有条件时通过搭配适当容量的蓄电池或接入市电作为备用电源,可使运行费用大大的降低、供电的可靠性大大的提高。 目前国内主要针对独立的风力发电、光伏发电及风一光互补发电控制系统的研究较多。在设计风一光发电系统中,普遍采用的设计思路是根据负载每天的总耗电量,和由当地气象数据得到的日辐射量来确定太阳能电池阵列、风力发电机的容量,再来确定可再生能源发电控制装置的功率和蓄电池容量,但是在混合发电系统的运行控制和优化管理方法方面的研究较少。 由于风电机组、太阳能电池阵列的输出功率和负荷功率受外界因素的影响,变动范围较大,因而对控制和优化发电系统的能量管理也提出了较高的要求。本文针对系统运行的特点设计了一能量管理系统(Energy Management System, 简称EMS)来提高系统的运行效率和可靠性。 2. 统的构成 本文以华南理工大学新能源中心的分散式风力一太阳能混合发电系统为研究景,系统的结构图如图22-1示: