Identification of Nonlinear Joint Interface Parameters Using Instantaneous Power Flow Balance Approach

2021 ◽  
pp. 183-191
Author(s):  
R. Anish ◽  
K. Shankar
Keyword(s):  
Power Flow ◽  
Joint Interface ◽  
Instantaneous Power ◽  
Flow Balance ◽  
Balance Approach ◽  
Interface Parameters ◽  
Nonlinear Joint

An Improved Noise Path Synthesis Technique for Systems With Nonlinear Joints

2003 ◽  
Author(s):  
Todd Rook
Keyword(s):  
Power Flow ◽  
Degrees Of Freedom ◽  
Cost Savings ◽  
Modal Expansion ◽  
Joint Forces ◽  
Wide Range ◽  
State Frequency ◽  
Nonlinear Joint ◽  
Path Synthesis ◽  
Nonlinear Joints

An efficient synthesis approach is developed which permits the calculation of the steady-state frequency response (FRF) of an assembly that is comprised of linear components and nonlinear joints. Receptance or accelerance matrices are used to characterize the linear components, which permits condensation of the system to just the joint degrees-of-freedom which is an immediate computational savings. Integrated into the technique is a frequency continuation scheme which permits studies across a wide range of frequencies — a key improvement to the continuation technique is the use of spline fits for the component FRF curves which provides significant cost savings over using modal expansion series at each iteration and also permits experimental data to be used if available. Finally, the calculated nonlinear joint forces are then used to study the power flow, structural and airborne, in the assembly, as well as to provide insight into the dynamic behavior within the components.

scholarly journals Distributed Optimal Coordinated Operation for Distribution System with the Integration of Residential Microgrids

2019 ◽  
Vol 9 (10) ◽  
pp. 2136 ◽  
Author(s):  
Jingshan Wang ◽  
Ke-Jun Li ◽  
Zahid Javid ◽  
Yuanyuan Sun
Keyword(s):  
Distribution System ◽  
Power Flow ◽  
Optimal Power Flow ◽  
Optimal Operation ◽  
Flow Balance ◽  
Second Order Cone ◽  
Target Cascading ◽  
Flexible Loads ◽  
Pv Generation ◽  
Operating Points

With the increasing integration of rooftop photovoltaic (PV) generation and plug-in electric vehicles (EVs) into the households at user level, household consumers become prosumers. The coordination between the household prosumers and distribution network (DN) becomes essential to the energy management and optimal operation for both entities. In this paper, the residential prosumer cluster is considered as a residential microgrid (RMG) and a hierarchical DN integration method for the multi-RMGs is presented. A two-level hierarchical distributed optimization model is established based on the analytical target cascading to coordinate the RMGs and DNs. At the RMGs level, each RMG is required to individually optimize the energy consumption scheduling in every household by taking into account the effect of time-of-use electricity price on the demand response of EVs and flexible loads. At the DN level, the optimally coordinated operation problem is formulated as a relaxed optimal power flow model based on the second order cone programming by considering the power flow balance constraints. Case studies on the modified IEEE 33-bus system demonstrate the feasibility and effectiveness of the proposed method by achieving coordinated economic optimality as well as coordinated operating points for all entities.

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