The invention relates to a method, for analyzing power
system power oscillation disturbance source, based on
SCADA (
supervisory control and
data acquisition) historical
data search. The method includes the steps of firstly, calling a
time sequence database interface of an EMS (enhanced message
system) to obtain historical data of an
active value of
power equipment in a time period in batches, and placing the data in a cache according to a set structure and allowing the same to wait for queuing calculation; secondly, queuing calling, calling an oscillation feature iterative function of historical data in each
queue for iterative
processing, inputting new data on the basis of a previous state, calculating feature quantity of active oscillating of one grid equipment, comparing with a preset fixed value, and returning
equipment state; thirdly, if equipment measurement oscillation occurs, generating and returning oscillation records; and fourthly, sorting and positioning an oscillating source, sorting collected records according to oscillation starting time, and positioning the first equipment as the oscillating source. By the method,
data accuracy is improved, convenience and practicality are achieved, and credibility of real-time positioning result information of the oscillating source is high.