基于多时空尺度辅助服务的多类能源协同运营优化机制研究

在可再生能源参与电力现货市场交易的环境下,考虑可再生能源发电波动性、系统节点电压稳定性以及实时负荷需求的影响,构建含有可再生能源的多类能源联盟体运营模式,模拟光伏、风电能源分别接入不同节点系统,以及选择系统典型的日负荷需求曲线(峰谷差率分别取55.68%、37.03%)设计不同的运行场景;并基于联盟体中各主体的均衡收益、收益均衡离散性评价、发电功率优化分配以及系统总收益构建多时空尺度辅助服务优化运营模型。研究表明:1)多类能源联盟体模式可有效减少可再生能源波动性对系统稳定性的影响,促进联盟体多个时段总体运营收益明显改善,充分挖掘系统辅助服务的市场价值;2)以满足负荷实时需求的多时空尺度辅助服务组合策略,可实现对于各主体多时段的出力优化以及市场投标报价决策的支持,以提升联盟体的市场竞争力;3)揭示了联盟体多时空尺度辅助服务总收益、各主体的均衡收益与负荷实时变化的关联规律和机理,为完善联盟体模式参与电力实时市场交易理论提供了实证数据支撑。

RESEARCH ON OPTIMIZATION MECHANISM OF MULTI-ENERGY COOPERATIVE OPERATION BASED ON MULTI-SPACE-TIME SCALE AUXILIARY SERVICE

In the real-time electricity trading market,considering the impact of renewable energy generation volatility,system voltage stability and real-time load demand,based on multi-type energy consortium model containing renewable energy,photovoltaic and wind energy connected to different systems are simulated,and different load demand curves are selected to design operation scenarios;based on the equilibrium income of each main body,income balance evaluation,optimal distribution of power generation and the total alliance revenue,a multi-space-time scale auxiliary service optimization operation model is constructed. Research shows that:(1)The alliance model reduces the impact of renewable energy volatility on power stability,promotes the overall operating income and confirms the theoretical application value of the model;(2)multi-space-time scale auxiliary service operation strategy meets real-time load demand.And in a real-time market environment. And it can lay the foundation for the optimization of the multi-period output of each subject and the formulation of the bidding price;(3)It reveals the correlation law between the changes in the total revenue of the alliance based on dynamic auxiliary services,the changes in the equilibrium revenue of each entity and the real-time demand of load,which provides the empirical data support for the theory of real-time electricity market transactions.