交直流混联电网下基于ATC的省间交易优化出清建模

Inter-provincial Power Exchange Optimization Modeling Considering ATC Constrains of Hybrid AC/DC Power System

目前,调度分离式下的省间中长期电力市场与电网运行尚未有效衔接,对电网运行造成了一定影响,在一定程度上抑制了大范围资源优化配置的市场扩大。其次,省间电网越来越复杂,基于全拓扑网络模型的中长期优化交易计算效率不高,故需针对中长期市场的网络模型进行简化。文章通过提取交直流混合电网简化模型关键线路,考虑"发电/负荷节点直接参与省间交易"和"省级电网代理发电/负荷节点参与省间交易"两种交易模式,建立省间输电网络简化模型,并在此基础上建立省间可用输电能力(available transmission capacity,ATC)优化交易模型,最后,以全国实际电网为例仿真验证了模型及其求解方法的有效性和可行性,可为实现全国统一电力市场的建设与完善、能源资源大范围优化配置等目标提供有利技术保障。

At present,the inter-provincial power exchange has not been effectively linked with the operation of the power system.Under such circumstances,the medium-term and long-term transactions without network constraints have a certain impact on the grid operation and the market expansion of large-scale resource optimization and allocation to some extent.Meanwhile,with the increasing complexity of the power system and the inefficient optimization of the medium and long-term transactions under the comprehensive network model,the simplification of the network model is needed for the medium-term and long-term market clearing.In this paper,the hybrid AC/DC power system is simplified by extracting the key components of the system.Meanwhile,the inter-provincial ATC optimization transaction model is established considering the power generation/load node directly participating in the inter-provincial power exchange and the provincial grid proxy generation/load node for inter-provincial power exchange.Finally,the effectiveness and feasibility of the proposed model are verified in the actual national power system.The proposed model can realize the construction and improvement of the national unified power market and provide favorable technical support for targets such as large-scale energy optimization configurations.