Process for real time recognizing voltage stability of electrified wire netting trough recognizing weak links of electric network
A voltage stability, weak link technology, applied in the direction of measuring current/voltage, phase angle between voltage and current, measuring resistance/reactance/impedance, etc. , inaccuracy, etc.
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[0069] A method for real-time identification of grid voltage stability by identifying weak links in the grid. The method obtains the real-time measurement of the voltage phasor and the line complex power of the nodes (i, j) at both ends of the line through the PMU phasor measurement system, and filters out the invalid measurement to estimate the line parameters in real time. Calculate the basic line voltage stability index BLSI in real time by using the filtered reliable quantity measurement and real-time estimated value of line parameters; or obtain the online line voltage through the state estimation function of the SCADA measurement data collection system and the EMS energy management system Calculate the basic line voltage stability index BLSI online based on the estimated value of the voltage phasor of the nodes at both ends and the line complex power; Identify and judge the weak links and voltage stability of the power system. In the present invention, the voltage stabi...
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