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Extra-high-voltage substation equipment temperature monitoring and alarming method based on outlier detection

A technology of outlier detection and ultra-high voltage, 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: 2014-11-05
SHANGHAI JIAO TONG 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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  • Extra-high-voltage substation equipment temperature monitoring and alarming method based on outlier detection
  • Extra-high-voltage substation equipment temperature monitoring and alarming method based on outlier detection

Examples

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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

The invention belongs to the technical field of electric power systems and provides an extra-high-voltage substation equipment temperature monitoring and alarming method based on outlier detection. Running status data of equipment are monitored, an outlier mining method in data mining is applied, and therefore the temperature anomaly status in the running process of the equipment is found in time; equipment failures are diagnosed in time by matching threshold detection, the high-temperature failures of the equipment can be avoided effectively, and the reliability of the equipment is improved. Compared with existing methods, the extra-high-voltage substation equipment temperature monitoring and alarming method has higher sensitivity, can diagnose the high-temperature failures of the equipment better, and makes effective use of 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 Applications(China)
IPC IPC(8): H02J13/00G01K1/02G06F19/00G01K1/024
CPCY04S10/16Y04S10/30Y02E60/00
Inventor 严淮胡炎邰能灵白永祥王惠丽
Owner SHANGHAI JIAO TONG UNIV
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