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This paper presents an algorithm for locating and design of a capacitive compensator to improve angle stabilities of synchronous machine DGs in a micro-grid. The proposed algorithm uses the notion of trajectory sensitivities to determine the sensitivity of DGs rotor angles versus the susceptance of a compensator. Then, via the sensitivity analysis of the micro-grid subsequent to a pre-specified fault,...
ModeMeter techniques for real-time small-signal stability monitoring continue to mature, and more and more phasor measurements are available in power systems. It has come to the stage to bring modal information into real-time power system operation. This paper proposes to establish a procedure for Modal Analysis for Grid Operations (MANGO). Complementary to PSS and other traditional modulation-based...
The voltage stability and the sensitivity of power grid are presented by introducing the P-V and the Q-V curves based on the dynamic load. Firstly, a power grid is exactly rewritten into a simple equivalent decentralized system by the power flow calculation. Next, the dynamic load is modeled in a higher order polynomial form identified from the data at a load-bus observed in Sweden. Then, the system...
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