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为在电力市场环境下管理动态阻塞风险,提出风险分摊的预交易迭代模式。针对电力市场预出清所得的工况,用故障概率与紧急控制代价的乘积来定义失稳风险。以该风险值最小为目标,搜索最优紧急控制。将得到的最小风险值在失稳机群中按发电功率分摊,并实时公布以引导竞争者计及自己的风险成本重新报价。迭代后得到统一出清购电费与失稳风险之和最小的决策。此时的出清结果(反映了电力系统的预防控制)与电力系统紧急控制达到最优协调。该模式可以公开、公平、公正地引导参与者降低动态阻塞风险。通过市场竞争与系统分析之间的动态交互仿真,分析影响输电动态阻塞风险的因素,研究物理领域中的电力系统稳定控制与经济领域中的市场交易阻塞管理之间的影响机理。
In order to manage the dynamic blocking risk under the electricity market environment, a risk-sharing pre-trading iterative model is proposed. Aiming at the condition of pre-clearing the electricity market, the risk of instability is defined as the product of the probability of failure and the cost of emergency control. To minimize the risk value as the goal, search for optimal emergency control. The minimum risk value obtained will be apportioned according to the power generation in the instability cluster and be announced in real time to guide the competitors to re-quote their risk cost. Iteration to be unified after the purchase of electricity costs and instability risk the smallest sum of the decision. At this time, the clearing result (reflecting the prevention and control of the power system) is optimally coordinated with the emergency control of the power system. This model can openly, fairly and impartially guide participants to reduce the risk of dynamic blockage. Through the dynamic interaction simulation between market competition and system analysis, the paper analyzes the factors that affect the risk of transmission dynamic congestion and studies the influence mechanism between the stability control of power system in physical field and the congestion management in the economic field.