考虑风光储协调运行的可靠性评估

风光储联合发电系统并网后必须采取策略与系统之间实现协调调度与运行才可在保证可靠性的前提下最大化利用可再生能源,但现有的可靠性评估中还缺少对大规模风光储联合发电系统协调运行的考虑。针对此问题,基于序贯蒙特卡罗仿真方法,建立了风电、光伏和储能系统的发电可靠性评估模型,并提出了新的协调调度策略。模型综合考虑了风速、太阳光辐照度、环境温度以及2种新能源发电技术的能量变换特性和储能系统的充放电约束等因素。这些模型被应用到IEEE RTS79中,通过在Matlab中编制程序进行仿真计算,考察不同的协调运行策略、联合发电系统容量配置以及储能特性对于系统裕度的影响。评估结果可为联合发电系统并网规划与设计提供参考。

Reliability Assessment Considering the Coordination of Wind Power, Solar Energy and Energy Storage

In order to utilize the renewable energy source as much as possible without deteriorating the overall system reliability,some operating strategies should be adopted to achieve the goal of coordinated dispatch and operation after the integration of hybrid generating system.But current reliability assessment is lack of consideration about coordination of large-scale hybrid generating system consisting of wind power,solar photovoltaic power and energy storage.So reliability evaluation model of wind power,solar photovoltaic power and energy storage are developed based on sequential Monte Carlo simulation.Some new operating strategies were presented.The inherent characteristics that determine the chronological variation of power output are incorporated when modeling,including wind speed,solar radiation,ambient temperature,energy conversion performance and charge/discharge constraints of energy storage.The proposed models were applied to IEEE RTS79 and the simulation calculation was performed by programming in Matlab.The impacts of operating strategies,configuration of hybrid generating system and energy storage characteristic on system adequacy were investigated.This result can provide reference to the planning and designing of hybrid generating system.