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1 Electrical Power Quality and Utilisation. Magazine

1 2005

1 Axelberg P. G.

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A quality information system based on distributed data acquisition

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Axelberg P. G.

Electrical Power Quality and Utilisation. Magazine

2005

tom Vol. 1, nr 2

47-54

Traditionally the control and supervision of a power network has mainly been focused on the operation of the network or for protecting system components during fault conditions etc. Relatively little attention has been focused on the product itself - the electrical energy. This old approach is now changing since many processes in the modem society are depending on having access to electrical energy with high reliability and quality. The trend among energy suppliers and power quality sensitive industries is to put increased focus on the supervision of the power quality in order to detect power quality disturbances before they cause unplanned interruptions etc. This paper discusses a system - Quality Information System - for permanent monitoring of power quality. The paper also discusses the new standard IEC 61000-4-30. This standard defines calculation schemes for the most important power quality parameters. The paper also discusses a monitor that is producing power quality information in accordance with this new standard.