초록 ▼

A microprocessor-based transformer monitoring system to provide continuous on-line monitoring and analysis of transformer operation. The transformer monitoring system periodically monitors various parameters related to transformer load and condition. Maximum, minimum, and instantaneous values of the

A microprocessor-based transformer monitoring system to provide continuous on-line monitoring and analysis of transformer operation. The transformer monitoring system periodically monitors various parameters related to transformer load and condition. Maximum, minimum, and instantaneous values of the parameters are stored and analzyed. To perform the analysis, a hierarchy of thresholds is associated with each parameter. When a parameter exceeds any one of the thresholds, a response is produced by the transformer monitoring system. The type of response depends on the level of the exceeded threshold in the hierarchy. The range of response produced by the transformer monitoring system includes: continuing normal periodic data collection and analysis, increasing the rate of data collection and analysis, recommending an on-site physical check of the monitored transformer, reducing transformer load, and taking the transformer off line.

대표청구항 ▼

A transformer monitoring system for on-line monitoring of transformer performance, wherein the transformer includes a cooling system, said transformer monitoring system comprising: sensor means for periodically collecting load data representative of at least one load related parameter; sensor means

A transformer monitoring system for on-line monitoring of transformer performance, wherein the transformer includes a cooling system, said transformer monitoring system comprising: sensor means for periodically collecting load data representative of at least one load related parameter; sensor means for periodically collecting condition data respresentative of a plurality of condition related parameters; means for establishing a hierarchy of predetermined load thresholds, wherein said hierarchy includes a plurality of levels such that each level includes a load threshold value for each load related parameter; means for establishing a hierarchy of predetermined condition thresholds, wherein said hierarchy includes a plurality of levels such that each level includes a condition threshold value for each condition-related parameter; first comparator means for comparing said load data with said predetermined load threshold value in each level, and for indicating when a load threshold value is exceeded; second comparator means for comparing said condition data with said predetermined condition threshold value in each level, and for indicating when a condition threshold value is exceeded; and means responsive to said first and said second comparator means for providing a predetermined response dependent on the level of the exceeded load threshold value or condition threshold value.