为客观、全面地对风电场发电可靠性进行评估,以保证风电场的安全经济运行,文章提出了一种基于风电场期望出力的可靠性评估方法.该方法根据风电场的期望出力计算电量不足期望值等发电可靠性指标.首先,基于风速、风机功率特性和不可用率计算多风机期望出力;然后,根据集电系统拓扑计算各出线期望出力,基于组合最小割集法计算升压站拓扑下整个风电场的期望出力,进而计算可靠性指标;最后,对金紫山风电场进行实例分析.评估结果证明所提出的方法能有效地反映风电场实际运行情况,具有工程实用价值.%To conduct an objective and complete assessment of the reliability of wind farm, as well as ensure the safe and economic operation of the wind farm, this paper presents a comprehensive generation reliability assessment method based on the expected output of wind farm. The proposed method according to the expected output of the wind farm to calculate the expected energy not served and other indicators of reliability. Firstly, the failure and power characteristics of wind turbine, as well as the probability distribution of wind speed are taken into account to calculate the expected output of the Multi-fan. Based on this, the expected output of each outlet of the electrical collection system can be obtained according to the influence of the topology of the electrical collection system. Then, on the basis of the combined minimum cut-set method to analyze the topology of the substation, the expected output of the entire wind farm can also be obtained. Finally, calculate indicators of reliability. The example analysis result of Jinzishan wind farm shows the actual operation of the wind farm reflected by the proposed method availably.
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