Array antenna based multiple local discharge point positioning and distinguishing method for local discharge detection device
The invention discloses an array antenna based multiple local discharge point positioning method for a local discharge detection device. The array antenna based multiple local discharge point positioning method comprises the steps of establishing a position equation related to local discharge points...
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Sprache: | eng |
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Zusammenfassung: | The invention discloses an array antenna based multiple local discharge point positioning method for a local discharge detection device. The array antenna based multiple local discharge point positioning method comprises the steps of establishing a position equation related to local discharge points according to time difference of local discharge signals received by detection antennae and calculating direction angles of the local discharge points; enabling a master control computer to control rotation of cloud platforms of the detection antennae according to the input direction angles till the detection antennae receives the local discharge signals at the same moment; controlling shooting of a video camera, accordingly obtaining images of the local discharge signals and achieving positioning of the local discharge signals. The array antenna based multiple local discharge point positioning method for the local discharge detection device adopts a canonical correlation technology to estimate the number of local discharge sources; adopting a multiple signal classifying algorithm and utilizing covariance matrixes of the received data to separate out local discharge spaces and noise sub-spaces, utilizing direction vectors of the local discharge signals and orthogonality of the noise sub-spaces to form a space angle spectrum, wherein the spectrum peak positions shows the orientations of target signals. |
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