澳洲维多利亚大学论文代写：电力需求
澳洲维多利亚大学论文代写：电力需求
电力需求的大部分是通过燃煤发电站产生的电力来抑制的。澳大利亚的可再生能源仍然是在偏远地区的最高水平产生的，在遥远的地方，从主要城市的澳大利亚，因此它的作用，在发电的能源目前和未来被视为边际。作为可再生能源是间歇性的性质，因此不能用于功率或基本负荷连续层次的需求匹配的可靠的消息来源”（Shafiullah，2012）。“基础负荷”是一个术语，用于定义连续24天一天连续满足电力需求所需的电量。它基本上用于连续的工业过程，甚至交通灯和医院等服务。
在南澳大利亚，名义上只有两个燃煤发电站，甚至有至少十五个风电场在运行条件。澳大利亚风能发电量平均每年约为27%（伊万斯，2012）。这两个煤站中有一家关闭了一年，另一家关闭了半年。国家的电力供应系统运行可靠，不需要通过不可再生能源供应电力。根据联邦政府资源局和能源经济学（布里）对可再生能源成本的预测，发现了各种可再生能源的最佳组合。这个最佳组合，包括风能约46%，通过太阳即集中太阳热能和大约22%的热储热发电，20%光伏太阳能即通过阳光直射产生的燃气轮机是生物燃料约6%，水电约为6%（约翰斯通，2010）。
因此，据估计，每年消耗能量的三分之二是通过风能和太阳能光伏能源、甚至不同的天气条件下，但是能源发电系统的可靠性保持在一定水平（潘瓦尔衍生，2011）。风能和太阳能光伏这两个来源在一年中几次都无法满足电力需求。这些高峰期是冬季和阴天期间，风速低，在整个地区缓慢的速度。
澳洲维多利亚大学论文代写：电力需求
The majority of electricity demanded is curbed through the electricity generated through coal-fired power stations. Renewable energy in Australia is still generated at maximum levels in remote areas which at distant places from the major cities of Australia therefore its role in the generation of energy for present and future is seen as marginal. As renewable energy sources are intermittent in nature thus are not the reliable sources for matching the demand for continuous levels of power or ‘base-load’ (Shafiullah, 2012). ‘Base-load’ is a term used for defining the amount of electricity needed for meeting the continuous demand for electricity for 24 hours a day for whole year. It is used essentially for industrial processes used for continuous periods and even for services of traffic lights and hospitals etc.
There are nominally just two coal-fired power stations in South Australia and it even has minimum fifteen wind farms in operating conditions. The electricity generation in Australia through wind energy is approximately 27% on an average annually (Evans, 2012). One among the two coal stations is shut down for the whole year and the other one is shut down for half year. The system of supply of electricity in the state is operating at reliable levels and there exists no need for the supply of electricity through non-renewable energy sources. According to the projections made by the federal government’s Bureau Resources and Energy Economics (BREE) about the costs of renewable energy an optimal mix of various renewable sources is found. This optimal mix includes wind energy about 46%, electricity generated through heat of sun i.e. concentrated solar thermal and the thermal storage energy of about 22%, 20% photovoltaic solar i.e. generated through direct sunlight, gas turbines which are bio-fuelled is approximately 6% and hydroelectricity is about 6% (Johnstone, 2010).
Thus it is estimated that two third of the energies for annual consumption are derived through wind and solar photovoltaic sources and they even vary on the weather conditions but the reliability of the energy generating systems is maintained at a certain level (Panwar, 2011). The two sources i.e. wind and solar photovoltaic are unable to meet the demands of electricity for just few times in a year. These peak periods are of winter seasons and overcast days during which the flow of winds is low with slow speeds in the whole region.
