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Temperature monitoring and alarm method for ultra-high voltage substation equipment based on outlier detection

An outlier detection and ultra-high voltage technology, which is applied in the field of power system, can solve the problems of lack of basis for setting floating thresholds, inability to effectively use historical data, etc., and achieve the effect of avoiding the difficulty of setting fixed values.

Active Publication Date: 2016-02-17
SHANGHAI JIAOTONG UNIV +1
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Problems solved by technology

"However, its shortcoming is that historical data cannot be effectively used, and the setting of floating thresholds lacks basis.

Method used

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  • Temperature monitoring and alarm method for ultra-high voltage substation equipment based on outlier detection
  • Temperature monitoring and alarm method for ultra-high voltage substation equipment based on outlier detection

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Embodiment 1

[0023] Such as figure 1 As shown, the operation steps of this embodiment are as follows:

[0024] Step 1) collecting operation status information including temperature data information and the like of the power equipment of the ultra-high voltage substation;

[0025] The operating temperature information of the key equipment in the substation is obtained by communicating with the collector through the Zigbee protocol through the wireless sensor, and each collector collects the information of multiple temperature measurement points in an area, and then every fixed time. For example, transmit the operating temperature data to the industrial computer through the RS485 bus in five minutes or ten minutes.

[0026] Step 2) Preprocessing the collected operating status information to establish a data set for equipment fault monitoring;

[0027] The data set refers to: the temperature data in the obtained operating status information is obtained by using a sliding time window to obta...

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Abstract

A method for temperature monitoring and alarming of ultra-high voltage substation equipment based on outlier detection in the technical field of electric power system, through monitoring the operation state data of the equipment, the method of outlier mining in operation data mining finds the temperature abnormal state in the operation of the equipment in time, And cooperate with the threshold detection to diagnose equipment faults in time, which can effectively avoid the occurrence of high temperature faults of equipment and improve the reliability of equipment. Compared with the existing methods, this method has higher sensitivity, can better diagnose high temperature faults of equipment, and effectively utilizes historical data.

Description

technical field [0001] The invention relates to a method for diagnosing faults of electric power equipment in the technical field of power systems, in particular to a method for monitoring and warning the temperature of ultra-high voltage substation equipment based on outlier point detection. Background technique [0002] In the power system, the substation is the assembly point of power transmission and distribution, which plays an important role in the transformation and redistribution of electric energy, and also plays an extremely important role in the management and control of the power grid. Therefore, the safe and stable operation of the substation is to ensure the safety and reliability of the power grid. important basis. In ultra-high voltage substations, important equipment includes transformers, switchgear, etc., among which switchgear is used to isolate faults and change the network topology, and high-temperature faults are prone to occur during heavy load and hi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J13/00G01K1/02G01K1/024
CPCY04S10/16Y04S10/30Y02E60/00
Inventor 严淮胡炎邰能灵白永祥王惠丽
Owner SHANGHAI JIAOTONG UNIV
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