Abnormal diagnosis method of secondary equipment of intelligent substation based on fault tree
A technology for smart substations and secondary equipment, applied in electrical components, circuit devices, digital transmission systems, etc., can solve problems such as difficult fault diagnosis, complex fault causes, interweaving and mutual influence of network relationships, and achieve accurate positioning and cause. Analyze and improve the effectiveness of operation and maintenance levels
Inactive Publication Date: 2017-01-25
NANJING GUODIAN NANZI POWER GRID AUTOMATION CO LTD
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Problems solved by technology
[0002] Due to the transformation and expansion of substations, the network scale has also increased. There are various types of abnormalities in secondary equipment, and the causes of failures are complex. A simple failure mode may correspond to two or more reasons, and the reasons for different types of failures may also be partially the same. The occurrence of one fault may lead to the occurrence of other faults, and the interweaving and mutual influence of network relations bring difficulties to fault diagnosis
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[0018] Below in conjunction with accompanying drawing of description, the present invention will be further described.
[0019] The present invention provides a method for diagnosing abnormality of secondary equipment in an intelligent substation based on a fault tree, comprising the following steps:
[0020] 1) Classify and stratify the fault abnormal state of the secondary equipment of the smart substation, and determine the cause events distributed step by step from top to bottom.
[0021] The fault abnormal state of the secondary equipment of the intelligent substation is divided into network fault and equipment fault, wherein, the network fault is divided into virtual terminal connection error, link pressure plate throwing error and link abnormality, and equipment fault is divided into hardware fault and software fault .
[0022] The virtual terminal connection error is divided into SCD design error, configuration export error, and reconstruction and expansion error. an...
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The invention discloses an abnormal diagnosis method of secondary equipment of an intelligent substation based on a fault tree, comprising the following steps: 1) classifying and layering the fault abnormal state of the secondary equipment of the intelligent substation,confirming the reason events gradually distributed from upside to downside; 2)extracting the fault information uploaded when the secondary equipment of the intelligent substation is abnormal; 3) drawing a fault tree figure according to the reason event, fault information, reason event and figured model path; showing the crossed event and state of a path by a logic symbol; setting up the fault tree of the construction unit based on a logic door and the reason event; 4) monitoring the real-time fault information uploaded by the secondary equipment of the intelligent substation in real time; searching the fault tree from upside to downside according to the real-time fault information until to find out the corresponding reason event and judge and output the diagnosis result. The accurate locating and reason analysis of fault of the intelligent substation can be realized; and the operation and maintenance level can be improved.
Description
technical field [0001] The invention relates to a method for diagnosing abnormality of equipment, in particular to a method for diagnosing abnormality of secondary equipment in an intelligent substation based on a fault tree, and belongs to the technical field of power system automation. Background technique [0002] Due to the transformation and expansion of substations, the network scale has also increased. There are various types of secondary equipment abnormalities, and the causes of failures are complex. A simple failure mode may correspond to two or more reasons, and the reasons for different failure types may also be partially the same. The occurrence of a fault may lead to the occurrence of other faults, and the interweaving and mutual influence of network relations bring difficulties to fault diagnosis. Contents of the invention [0003] The main purpose of the present invention is to overcome the deficiencies in the prior art, provide a method for abnormal diagno...
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IPC IPC(8): H04L12/24H02J13/00
CPCH02J13/0013H04L41/0636H04L41/065H04L41/0677H04L41/145Y02E60/00Y04S10/16
Inventor 姚亮陈实
Owner NANJING GUODIAN NANZI POWER GRID AUTOMATION CO LTD