【摘要】 不久前提出的网络法是分析和计算电力系统经济调度问题的有效方法。本文进一步开拓了该法的应用范围,用来分析多地区电力系统的经济运行。借助此法,地区系统的电路模型可化简为其Thevenin或Norton等效,使得联合系统的经济效益分析及经济调度的计算大为简化。文中提出了联合系统分层经济调度的算法,并附有实例的计算结果。更多还原

【Abstract】 The recently proposed network approach transforms the economic dispactch problem to an electric circuit problem. The object of the present paper is to further develop the approach to allocate load economically in a large scale multi-area system. An area system interconnected with its neighbors, according to the network approach, can be represented by a multi-port network. The number of the ports is equal to the number of the boundary buses in the area adjacent to neighbors. The multi-port network then can be simplified to a Thevenin or Norton equivalent in which only the port nodes, corresponding to the boundary buses, are preserved.The simplification procedure of each area system to its multi-port equivalent is implemented by an algorithm refered to as partial optimally ordered triangular factorization. The steps can be listed as follows:(1) Build network model of the area system, divide the nodes in the network and their associted variables, such as potentials and flows, each into two groups: boundary and interior.( 2) The interior nodes are optimally ordered and the interior admittance matr x s triangular factorized. ( 3 ) Use these factorized equations to eliminate the interior potentials in the boundarynode equations. The steps( 2 )and( 3 )are shown schematically as in eqs.(10)and(11).The lower part of eq.(11)represents the Norton equivalent of the area system.After all area systems are transformed to their eqivalents, the deminsion of the problem is drastically reduced, hence the problem of evaluating the economic effect of transaction between areas as well as the problem of multi-area dispatch are considerably simplified.A numerical example is provided for demonstrating the applicability of the proposed approach.更多还原