METHOD OF MANAGING DISTRIBUTION TRANSFORMER USING ELECTRIC POWER INFORMATION FROM LOW VOLTAGE CONSUMERS

摘要

PURPOSE: A distribution transformer management method using low pressure consumer power Information is provided to help power quality management and transformer management of a customer or electric power facilities. CONSTITUTION: An information collecting device of an advanced metering infrastructure (AMI) system infers a voltage estimation value of a transformer secondary side through voltage information of a classified customer (S40). The information collecting device of the AMI system estimates a three phase balanced to imbalanced degree value for a low voltage customer using the voltage estimation value (S50). The information collecting device of the AMI system obtains the sum of current values running in each phase (S60). The information collecting device of the AMI system obtains a hot spot temperature value of a wire by applying the current values to a load factor (S70). The information collecting device of the AMI system infers a life estimation value of a transformer by applying the hot spot temperature value to a life inference equation of a distribution transformer (S80). [Reference numerals] (AA) Start; (BB) End; (S10) Collect the electric information of a consumer; (S20) Calculate a phase value of the electric information of each consumer; (S30) Classify consumers by using the phase value; (S40) Infer a voltage estimation value of a transformer secondary side; (S50) Estimate a three phase balanced to imbalanced degree value for a low voltage; (S60) Obtain the sum of current values running in each phase; (S70) Obtain a hot spot temperature value of a wire; (S80) Infer a life estimation value of a transformer