Method and device for measuring voltage
First Claim
1. A method for measuring a voltage at a point in a power distribution network, which comprises the steps of:
- providing a measuring circuit having a voltage sensor coupled to a current-carrying conductor of the power distribution network and a further-processing configuration connected to the voltage sensor, the further-processing configuration having an output outputting a measured voltage value as an output signal;
correcting the output signal from the measuring circuit into correct measured value in a correction element having a transfer function being inverse to a transfer function of the measuring circuit, the correction element being an electronic filter; and
adjusting the transfer function of the electronic filter to match the transfer function of the measuring circuit.
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Accused Products
Abstract
A method measures a voltage at a point of a current distribution network via a measuring circuit. The measuring circuit contains a voltage transmitter which is coupled to a current-conducting conductor of the network, and a further processing configuration which is connected to the voltage transmitter and which outputs a voltage measuring value as an output signal at the output thereof. The output signal of the measuring circuit is corrected by a correction element that has a transfer function that is inverse to the transfer function of the measuring circuit in order to obtain precise voltage measuring values that are independent from the type of the selected voltage transmitter. A measuring device is provided for carrying out the method.
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Citations
25 Claims
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1. A method for measuring a voltage at a point in a power distribution network, which comprises the steps of:
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providing a measuring circuit having a voltage sensor coupled to a current-carrying conductor of the power distribution network and a further-processing configuration connected to the voltage sensor, the further-processing configuration having an output outputting a measured voltage value as an output signal; correcting the output signal from the measuring circuit into correct measured value in a correction element having a transfer function being inverse to a transfer function of the measuring circuit, the correction element being an electronic filter; and adjusting the transfer function of the electronic filter to match the transfer function of the measuring circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A measuring apparatus for measuring a voltage at a point in a power distribution network, the measuring apparatus comprising:
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a measuring circuit having a voltage sensor coupled to a current-carrying conductor of the power distribution network, and a further-processing configuration connected to said voltage sensor, said further-processing configuration having an output outputting a measured voltage value as an output signal; and an electronic filter functioning as a correction element and having an output side connected to said measuring circuit, said correction element receiving the output signal from said measuring circuit and outputting a corrected measured value, said correction element having a transfer function being inverse to a transfer function of said measuring circuit, said electronic filter functioning to adjust the transfer function of said correction element to match it to the transfer function of said measuring circuit. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification