Control Method of System Voltage and Wattless Current by Means of Logic Circuit

概要

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Recently, automatic control of voltage and wattless current on electric power system has been carried out in good result. However, so long as the control of voltage and wattless current is carried out at each power station individually, there is a limit in control ability since control action at one station is apt to give bad influence on the controls at other stations.In order to remove such defect, moderate-scale power system coverings several stations should be regarded as on group and these stations should cooperate each other in making the control as a multivariable system. In this case, information to be treated is in so big quantity that an adequate and quick processing of the information becomes necessary to control the voltage and wattless current to meet the variation of these values.Presented in this paper is a new method for controlling the voltage and wattless current by means of a particular equipment consisting of a maximum amplitude filter, logic circuits and simple analogue circuits. Digital simulation proved that this method is applicable to actual power system. In particular, this method is very useful for on-line control since the response of processing unit is quicker than that of other equipments. This method is also excellent in reliability because of simplicity of the equipment used.
公益社団法人計測自動制御学会の論文