【摘要】 介绍了统计综合法建模中的一种新的负荷调查方法,该方法结合了对所有变电站的负荷普查及对典型变电站的详细调查。首先描述了负荷调查的主要工作流程,详细阐述了基于负荷特性的分类指标和负荷节点分类原则,在此基础上编制了负荷特性普查表,并确定调查数据的来源及调查对象。然后对普查中取得的负荷特性数据进行统计分析,利用调查统计结果对220kV变电站(负荷节点)进行了分类。提出了兼顾考虑地域性和变电站负荷构成的各类型负荷典型变电站的选取原则,按此原则为每类负荷类型选取了典型变电站,并为这些典型负荷节点设计了详细调查表格。该方法在较小的调查复杂度基础上实现了较高的准确性,并已经在华北、华中、西北、东北电网中得到成功应用。更多还原

【Abstract】 A new load survey method, which combines load screening on all substations with detailed investigation of typical substations, for synthesis load modeling (SLM) is presented. Firstly, the main process of load survey is described; then the classification indices based on load characteristics and the principle of load `classification are expounded in detail, on this basis the census table of load characteristics is drawn up and both sources of survey data and objects to be surveyed are decided; and then, the statistical analysis on load characteristic data from general survey is performed and by use of the results of survey and statistics the 220kV substations, i.e., the load nodes, are classified. Taking the regionality of substation locations into account, the principle to select typical substations, in which the load constituents and types are considered, is proposed, and according to the proposed principle typical substations for each kinds of loads are chosen, and the detailed census forms for these typical loads are designed. Using the proposed method, the survey with higher accuracy can be achieved under relatively low survey complexity. The proposed load survey method is successfully applied in Central China Power Grid, North China Power Grid, Northwest China Power Grid and Northeast China Power Grid.更多还原