基于等值频率响应模型的海上油田群电网风电穿透功率极限分析方法

提出了一种基于等值频率响应模型的海上油田群电网风电穿透功率极限分析方法。首先，构建了海上油田群电网的平均系统频率响应(ASFR)等值模型，基于单、分轴燃机确定电网原动机-调速器参数，根据t location-scale分布和差分变换方法刻画风电出力波动概率分布；然后，基于电网可承受的最大风电波动对应累积概率指标和最严重故障后电网最大频率变化指标，提出了考虑稳态频率偏差约束和暂态频率稳定约束的风电穿透功率极限分析方法；最后，以某实际海上油田群电网为例验证了所提方法的准确性与有效性，结果表明，原动机-调速器响应速度和暂态频率稳定约束对于海上油田群电网的风电穿透功率极限具有关键影响。

Equivalent frequency response model-based analysis of wind power penetration limit in offshore oilfield power systems

A method based on an equivalent frequency response model for analyzing the wind power penetration limit(WPPL) in offshore oilfield power systems is proposed. The average system frequency response(ASFR) equivalent model of offshore oilfield power systems is developed. The parameters of prime mover and governor are determined based on the single-and twin-shaft gas turbine. The probability model of wind power fluctuation is established according to the differential transformation and t location-scale distribution. Then, based on the indicator of allowing cumulative probability of wind power fluctuation and the indicator of maximum frequency variation after the most serious fault, the WPPL analyzing method considering frequency deviation constraints and transient frequency stability constraints is proposed. The accuracy and effectiveness of the proposed method are verified using the actual offshore oilfield power systems, and the results demonstrate that the response speed of prime mover and governor and the transient frequency stability constraints have critical impacts on the WPPL in offshore oilfield power systems.