PARTIAL DISCHARGE ANALYZER

PROBLEM TO BE SOLVED: To obtain a partial discharge analyzer which can support an expert engineer to finally and correctly perform diagnosis and to instruct a demolition work for removing a cause of partial discharge based on a diagnostic result.SOLUTION: There is provided a partial discharge analyzer including: a plurality of partial discharge sensors 4 which are installed in a high voltage apparatus to detect partial discharge signals; a detection part 6 which detects pulse generation frequencies (n) of partial discharge from the partial discharge signals detected by the partial discharge sensors 4; a control processing part 7 which records the pulse generation frequencies (n) detected by the detection part 6 in a storage part 10 with their detection time and installation places of the partial discharge sensors 4; a display control part 13 which reads the pulse generation frequencies (n), etc. from the storage part 10 to create a state diagram for displaying display showing the installation places of the respective partial discharge sensors 4 by overlapping display showing magnitude of the pulse generation frequencies (n) at the respective installation places at specified time on an image diagram of the high voltage apparatus; and a display part 14 which displays the created state diagram.