METHOD FOR IDENTIFYING POWER QUALITY DISTURBANCE TYPE BASED ON PQVIEW DATA SOURCE

摘要

Provided is a method for identifying a power quality disturbance type based on a PQView data source. The method utilizes Site, Event, EventTrend, RMSVariation and Transient tables of a PQView database, and comprises the following steps: Step 1: acquiring all events within a certain time period from the PQView database, and determining whether each event has an rms type and whether the duration of each event is between 0.01 s and 1 min, and if not, performing Step 2; otherwise, acquiring a maximum per unit value and a minimum per unit value of a three-phase voltage, and respectively detecting the per unit values of each group, determining whether temporary voltage drop, short-time power outage and overvoltage failures occur, and describing a three-phase disturbance reason; Step 2: implementing a steady type analysis algorithm if an rms record exists and the duration of the rms record is greater than 60 s; and Step 3: writing each returned result to a PerturbAnalyse disturbance analysis table.