风/柴/储能系统发电容量充裕度评估

Capacity Adequacy Evaluation of Wind-diesel-storage System

提出一种用于含风能和能量储存设备的小型孤立电力系统(SIPS)发电容量充裕度评估仿真方法。该仿真方法根据每小时计算的随机事件模拟发电系统的运行历史记录,考虑现场风资源的时序性、系统中发电机组的故障和修复特性。使用几个样例系统说明了该方法的应用,该系统的充裕度取决于许多因素,它们是能量储存容量、系统负荷需求、风能注入水平、发电机组强迫停运率(FOR)和其地理位置。能量储存设备对该系统可靠性能有积极的影响;SIPS随着系统负荷的增加,充裕度减少;风力发电机组FOR的变化对系统充裕度的影响不大;增加风能注入水平可以改善可靠性;位于高平均风速处的系统明显比低平均风速处的系统可靠性高。

A simulation method is proposed for the generating capacity adequacy evaluation of small isolated power systems（SIPS） including wind energy and energy storage facilities. The simulation technique is based on using hourly counted random events to mimic the operational history of a generating system, taking into account the chronological time correlated nature of the site resources and the failure and repair characteristics of the generating units in the system. The application of the proposed method has been illustrated using several example systems. The adequacy of the system depends on many factors such as the energy storage capacity, the system load demand, the wind energy penetration, the generating unit forced outage rate （FOR） and the geographic location. The relatively high reliability benefits are achieved by the increased energy storage. The adequacy of SIPS degrades with increase in the system load. Variations in the FOR of the wind power generating units do not have significant impacts on the system adequacy. Reliability improvement can be obtained by increasing the wind energy penetration level. The system situated at a location with a high mean wind speed obviously provides higher system reliability than that at a location with lower mean wind speed.