Regional modeling approach for analyzing harmonic stability in radial power electronics based power system

Stability analysis of distributed power generation system becomes complex when there are many numbers of grid inverters in the system. In order to analyze system stability, the overall network impedance will be lumped and needs to be analyzed one by one. However, using a unified bulky transfer-function creates an ambiguity of knowing the reason of instability and also there is no fixed way of choosing the sequence of the analysis. This paper suggests a method to perform a regional stability analysis in the distribution power system. The main idea is started from the simplest stability analysis entity and then it is expanded for generalizing its concept to an overall radial structured network.

[1]  M. Liserre,et al.  An active damper for stabilizing power electronics-based AC systems , 2013, 2013 Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition (APEC).

[2]  Frede Blaabjerg,et al.  Stabilization of multiple unstable modes for small-scale inverter-based power systems with impedance-based stability analysis , 2015, 2015 IEEE Applied Power Electronics Conference and Exposition (APEC).

[3]  Jian Sun,et al.  Impedance-Based Stability Criterion for Grid-Connected Inverters , 2011, IEEE Transactions on Power Electronics.

[4]  Frede Blaabjerg,et al.  An impedance-based stability analysis method for paralleled voltage source converters , 2014, 2014 International Power Electronics Conference (IPEC-Hiroshima 2014 - ECCE ASIA).

[5]  Frede Blaabjerg,et al.  A Series-LC-Filtered Active Damper With Grid Disturbance Rejection for AC Power-Electronics-Based Power Systems , 2015, IEEE Transactions on Power Electronics.

[6]  R. D. Middlebrook,et al.  Input filter considerations in design and application of switching regulators. , 1976 .

[7]  Frede Blaabjerg,et al.  Modeling and Analysis of Harmonic Stability in an AC Power-Electronics-Based Power System , 2014, IEEE Transactions on Power Electronics.

[8]  Fred C. Lee,et al.  Impedance specifications for stable DC distributed power systems , 2002 .

[9]  Jinjun Liu,et al.  Stability Issues of $Z + Z$ Type Cascade System in Hybrid Energy Storage System (HESS) , 2014, IEEE Transactions on Power Electronics.