【摘要】 针对电力系统综合负荷传统异步电动机模型存在的结构缺陷,从总体测辨的角度提出并建立了"综合异步电动机模型"。模型将配电网络用集总线路-变压器组集结等效,并计及了变压器有载调压分接头的影响;在静态负荷中考虑负荷暂态无功功率的补偿调整作用。推导出了模型的完整解析描述;提出了模型的"递推辨识策略"。模型实现了220kV变电站综合负荷物理环境—模型辨识环境—仿真计算环境的统一性和一致性,更加符合电网的综合负荷实际结构。基于现场实测数据的建模实例表明,考虑配电网集结等效的"综合异步电动机模型"在参数稳定性、泛化能力等综合性能上,较传统异步电动机模型有了一定的提高。更多还原

【Abstract】 Aiming at the disadvantages of the structure of traditional induction motor load model,a new "synthesis induction-motor model" to describe power composite load is instructed.In this model,the distribution network is equivalent to a set of lumping line and transformer,and the influence of OLTC(on-load tap changer) and transient reactive power compensation are considered.The model achieves the oneness of the physics environment,model identification environment and simulation environment of the 220kV transformer substation composite load,and accords with the structure of power system composite load.The modeling test based on field measured sample shows that the identifiability,generalization,and the composite capability of Synthesis induction-motor model considering distribution network structure is better than traditional induction motor model.更多还原