Method, for analyzing power system power oscillation disturbance source, based on SCADA (supervisory control and data acquisition) historical data search
A historical data and power system technology, applied in the field of search and location of power system power oscillation disturbance sources, can solve problems such as insufficient device understanding, incomplete monitoring range, and difficult integration of EMS systems, so as to improve the practical level, simplify technical implementation, Achieve simple and practical effects
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[0034] The following is a preferred embodiment of the present invention, and the features, objects and advantages of the present invention can be seen from the description and drawings of the embodiment.
[0035] 1. This method uses the oscillation feature iteration function, which is explained as follows:
[0036] figure 1 Is the flow chart of the oscillation characteristic iteration function, the characteristic function is a state iteration function, input new data on the basis of the previous state, calculate the characteristic quantity of active power swinging back and forth of a certain power grid equipment, and compare with the preset fixed value Returns the state of the device after the comparison.
[0037] The input of the function: (Pk,tk), where Pk is the active value of the equipment, and tk is the time of measurement collection.
[0038] Determine whether the current value is an extreme point,
[0039] Pk’·Pk-1’<0 (1)
[0040] in:
[0041] Pk'=
[0042] If ...
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