POWER INTERCHANGE ROUTE CREATION METHOD AND POWER INTERCHANGE ROUTE CREATION DEVICE

摘要

When interchanging or transmitting and distributing power by a technology using each multi-terminal non-synchronous interconnection device described in a patent document (1), it is necessary to determine an interchanging route and the amount of power to be interchanged through a self-exciting power converter. In the above prior art, however, a rule in which the power transmission loss for the interchanging route is minimized is only described. In the future, since methods for interchanging and transmitting and distributing various forms of power or power using various power transmission and distribution devices and power distribution devices are expected, a method for determining a power interchange route using an index representing the effect of specific power interchange and transmission and distribution other than the power transmission loss and a device implementing the method are required. As indicated in the above part of the problem to be solved by the invention, first the present invention uses, as input data, connection information and facility database in a network used when interchanging power and characteristics not described in the patent document and representing the conversion efficiency of the self-exciting power converter in the multi-terminal non-synchronous interconnection device to calculate an interchange route through which a large number of self-exciting power converters in the multi-terminal non-synchronous interconnection devices installed in the entire target network are operated at the maximum efficiency (minimum self-exciting power converter loss) as a whole. Further, the expense for a power trade occurring during the interchange is also simultaneously calculated. Further, in addition to the minimization of the self-exciting power converter loss, power flow is optimally distributed so that a green-power index is maximized that becomes an index representing the use amount of power derived from renewable energy, and an interchange plan for maximizing the use of power derived from renewable energy and a control method are designed.