engleski

The effect of branch parameter errors on voltage stability enhancement schemes

Branch parameter errors may affect the success of voltage stability enhancement schemes. This work considers errors of varying sign and magnitude in the parameters of transmission lines. The state estimators used, incorporate synchronized phasor measurements. The applied voltage stability enhancement scheme is based on monitoring individual branches and on load shedding, for various thresholds of the applied stability indices. A discussion on voltage stability enhancement schemes and branch parameter errors is followed by simulations on two case studies involving two IEEE studies and both static and transient contingencies. In conclusion, dealing with branch parameter errors in the context of voltage stability enhancement schemes is discussed.

Voltage stability; branch parameter error; state estimation; synchronized measurement technology

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