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在电力工业中 ,按参与转运的电力公司和其他电力公司 (电力交易方 )在地域上的关系可以划分为不同的转运类型 :区域内部 ,母线到母线 ;区域间 ,区域到区域 ;区域间 ,区域到母线 ;区域间 ,母线到区域 ;区域间 ,母线到母线。在一个多区域互联电力系统中 ,一个区域的有功 /无功的边际转运成本是系统中电力交易买卖双方的功率变换变化一个单位时引起的该区域内运行成本的变化。每一个转运区域的边际转运成本是用多区域最优潮流模型基于最优发电调度计算得到的。应用每个区域的发电成本对母线功率需求变化和功率交换水平变化的信息 ,可以计算不同类型的电力交易的边际转运成本。文中通过一个有 1 6条母线和 4个互联区域的系统来分析和运用所提方法 ,并讨论了负荷水平和交换功率水平变化对边际转运价格的影响。
In the power industry, the geographical relationship between the power companies involved in trans-shipment and other power companies (power traders) can be divided into different types of trans-shipment: intra-regional, bus-to-busbar; intra-regional, regional-to-regional, inter-regional, Area to busbar; between areas, busbar to area; between areas, busbar to busbar. In a multi-area interconnected power system, the marginal transfer cost of active/reactive power in one area is the change in operating cost in the area caused by a unit change in the power conversion between the buyers and sellers of the power trading system. The marginal transit cost for each transshipment area is calculated using the multi-area optimal power flow model based on the optimal power generation schedule. Applying the information on the power generation cost of each region to the changes in bus power demand and power exchange level, the marginal trans-shipment costs for different types of power transactions can be calculated. The paper analyzes and applies the proposed method through a system with 16 buses and four interconnected areas, and discusses the effect of changes in load levels and exchange power levels on marginal transfer prices.