Synchrophasor Associated Adaptive Control Strategy for Under Frequency Protection and Load Shedding in Smart Grid

G. W. Cai; D. Y. Yang; Y. T. Jiang

doi:10.15866/iree.v8i1.1707

Synchrophasor Associated Adaptive Control Strategy for Under Frequency Protection and Load Shedding in Smart Grid

G. W. Cai^(1*), D. Y. Yang⁽²⁾, Y. T. Jiang⁽³⁾

^(*) Corresponding author

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Abstract

A novel adaptive control strategy for under frequency protection and load shedding associated with synchronous phase measurement unit (PMU) is proposed in this paper. With the help of the PMU, the magnitude of active power deficit is estimated by using the simplest expression of the generator swing equation and static load model since the frequency, voltages and their rate of change can be obtained by means of measurements in real-time. Then, a robust control strategy with consideration of the uncertainties in system is presented. In the proposed robust control strategy, the under frequency load shedding (UFLS) schemes are used to prevent system frequency collapse. And minimal amounts of remote information are required. The effectiveness and robustness of the proposed control strategy investigated carrying out on 17-generator 69-bus test system under various disturbance scenarios
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Keywords

Smart Grid; Adaptive Control; Under Frequency Load Shedding (UFLS); Synchronous Phase Measurement Unit (PMU)

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