大型风电场的瞬时稳定和模拟

中文字数:3293,中文页数:9   英文字数: 2299页数:12

Modelling and transient stability of large wind farms
 
Introduction
 Denmark has currently about 2300 MW wind power capacity in on-land and few offshore settings, which corresponds to more than 20% of power consumption(in average). Further, construction of two large-scale offshore wind farms of 150 MW power capacity each has been announced. The first large offshore wind farm in Denmark will be constructed at Homs Rev by the year 2002 in the area of the system operator ELTRA .This will be followed by the first in the area of the Eastern Danish system operator ,ELKRAFT System ,large offshore wind farm at Rodsand by the year 2003.
 The installed capacity in on-land settings and in combined heat-power units(UHP)will increase as well, whilst the power production and control ability of the conventional power plants with respect to voltage and frequency are reduced . In the years to come ,the power production pattern in the Danish power system will change from the power supply from conventional power plants―as it is known today―to a power supply mix, where about 30-40%of power consumption(in average) is covered by wind power. In other words, the power technology will undergo changes from a well-known technology built-up about conventional power plants to a partly unknown technology―wind power.

大型风电场的瞬时稳定和模拟

1．介绍
 丹麦当前在陆地和极少海外的放置中有大约2300 MW风能，这已经超过了平均能量消费水平的20% 。此外， 二个150 MW的大规模海面风电厂的工程已经被宣布。 在丹麦的第一个大的海面风电厂 2002 年以前将会在叙利亚被建造，它是系统操作员 ELTRA 的区域。这将会在东方丹麦的系统区域中被第一个跟随操作员 ,ELKRAFT 系统在2003 年以前就向海面的风电厂转变。   在陆地放置中的和在结合的热量单元( UHP )中的安装的能力也将增加 ，在关于电压和频率的能量的生产和传统发电厂的控制能力被减少的时候。 在未来的数年内，丹麦的电力制度的电力生产式样将会从来自传统电力补给改变，当现在对大约 30-40% 耗电量 (平均的) 被风能覆盖的一个动力补给混合的之时。换句话说，动力技术将会接受被建造的来自一种众所周知的技术的变化，增加有关对部分未知的技术―风动力的传统发电厂。
 在这一年来它将着重于保持电力系统稳定和电压稳定, 举例来说在一个短路中, 当风动力的数量大幅增加的时候，确定电力供应安全和其他的重要工作就是必需解决的，就需要用大量的风能和它的可靠操作维持电力系统的动态稳定。

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