Method and system for establishing fingerprint library of vfto measurement data
A technology of measuring data and fingerprint database, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problems of imperfect detection means and long maintenance time of GIS equipment, saving maintenance time, improving efficiency, and strong adaptability Effect
Active Publication Date: 2021-05-25
YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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Problems solved by technology
[0005] The present invention provides a method and system for establishing a fingerprint database of VFTO measurement data, to solve the problem that after GIS equipment fails, the detection means for the detection of the fault type and the result of the fault type are not perfect, resulting in relatively long maintenance time for GIS equipment. long question
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[0038] The present invention will be further described below in conjunction with drawings and embodiments.
[0039] see figure 1 , a schematic flow diagram of a method for establishing a fingerprint library of VFTO measurement data provided by an embodiment of the present invention, including:
[0040] Step S100: Collect VFTO measurement data in the GIS, the VFTO measurement data includes transient recovery overvoltage data acting on the GIS internal conductor and casing, fast transient overvoltage data acting on the GIS internal conductor and casing, The transient overvoltage data acting on the shell between the GIS shell and the ground, the electromagnetic wave data radiated from the GIS shell, the transient overvoltage data and noise signals acting on the primary equipment outside the GIS.
[0041] When collecting VFTO measurement data, try to collect various types of data samples from various GIS equipment to ensure the richness of VFTO measurement data.
[0042] The tra...
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The invention discloses a method and system for establishing a fingerprint library of VFTO measurement data. The establishment method includes collecting VFTO measurement data in GIS; performing dimensionality reduction processing on the VFTO measurement data by using principal component analysis to obtain a first parameter set; The set is normalized to obtain the second parameter set; the neural network algorithm is used to learn and train the second parameter set to obtain the training set; the training set is used to identify part of the VFTO measurement data; and it is judged whether the recognition rate of the part of the VFTO measurement data identified by the training set satisfies Requirement, if so, extract the training set to build the fingerprint library. The present invention collects a large number of VFTO measurement data in GIS equipment, uses the principal component analysis method, normalization processing method and neural network algorithm to process the VFTO measurement data to generate a fingerprint library, and when the on-site GIS equipment is detected, the on-site GIS detection is identified through the fingerprint library Data can quickly determine the type of GIS fault and locate the problem, effectively saving the maintenance time of GIS equipment and improving efficiency.
Description
technical field [0001] The invention relates to the technical field of processing and analyzing VFTO measurement parameters of GIS equipment, in particular to a method and system for establishing a fingerprint library of VFTO measurement data. Background technique [0002] Gas insulated switchgear (Gas Insulated Switch-gears, GIS for short), GIS encloses circuit breakers, disconnectors, grounding switches, current and voltage transformers, surge arresters and connected busbars in metal shells, and fills them with SF 6 Gas, as insulation between phases and to ground. Among them, when the isolating switch is opening and closing the empty bus, due to the slow movement speed of the contacts and the poor arc extinguishing performance of the switch, multiple reignitions will occur between the contact gaps. The voltage at both ends of the DS contact gap drops suddenly within a few nanoseconds, and the steep voltage wave continuously generates traveling waves in the GIS, propagates...
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IPC IPC(8): G06K9/62G01R31/00
CPCG01R31/00G06F18/2135G06F18/24G06F18/214
Inventor 周雷谭向宇王科彭晶赵现平马仪周年荣张文斌黄星程志万杨晴李秉睿马国明
Owner YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST