All values are expressed as complex numbers: the symbols represented with 'Λ' are estimated values which are not measurable by the equipment. V_(2i) node voltage at Node(2i); I_(2i) line current injected to Node(2i) from Node(2i-2); S_(2i) injected apparent power to Node(2i); Z_(2i) impedance between Node(2i) and Node(2i-2); Advanced metering infrastructures in distribution network provides grid operators with more information which can be utilized for various operations such as state estimation, voltage control, aggregation of power consumption and fault detection. However, meter readings often contain missing readings because the meter metrology and communication module sometimes work improperly. To overcome the above problem, we propose an analytical estimation method for missing readings with well-grounded circuit theory principles. The proposed method utilizes voltage and current of adjacent nodes which remain intact during the missing period. From these data, current, voltage and power factor which are missing are estimated, and subsequently the missing power consumption can be inferred as well.
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