Real‐time active control of structural energy density and structural power flow.

2010 ◽  
Vol 127 (3) ◽  
pp. 1953-1953
Author(s):  
Daniel A. Manwill ◽  
Jeff M. Fisher ◽  
Scott D. Sommerfeldt ◽  
Kent L. Gee ◽  
Jonathan D. Blotter
Keyword(s):  
Energy Density ◽  
Real Time ◽  
Active Control ◽  
Power Flow ◽  
Structural Power

Real-Time Tuning of Delayed Resonator-Based Absorbers for Spectral and Spatial Variations

2018 ◽  
Vol 141 (2) ◽  
Author(s):  
Ryan Jenkins ◽  
Nejat Olgac
Keyword(s):  
Real Time ◽  
Active Control ◽  
Design Guidelines ◽  
Spatial Variations ◽  
Time Varying ◽  
Vibration Absorption ◽  
Spatial Tuning ◽  
System Components ◽  
Hybrid Concept ◽  
Time Variations

This paper offers two interlinked contributions in the field of vibration absorption. The first involves an active tuning of an absorber for spectral and spatial variations. The second contribution is a set of generalized design guidelines for such absorber operations. “Spectral” tuning handles time-varying excitation frequencies, while “spatial” tuning treats the real-time variations in the desired location of suppression. Both objectives, however, must be achieved using active control and without physically altering the system components to ensure practicality. Spatial tuning is inspired by the concept of “noncollocated vibration absorption,” for which the absorber location is different from the point of suppression. This concept is relatively under-developed in the literature, mainly because it requires the use of part of the primary structure (PS) as the extended absorber—a delicate operation. Within this investigation, we employ the delayed resonator (DR)-based absorber, a hybrid concept with passive and active elements, to satisfy both tuning objectives. The presence of active control in the absorber necessitates an intriguing stability investigation of a time-delayed dynamics. For this subtask, we follow the well-established methods of frequency sweeping and D-subdivision. Example cases are also presented to corroborate our findings.

scholarly journals Algebraic and Parametric Solvers for the Power Flow Problem: Towards Real-Time and Accuracy-Guaranteed Simulation of Electric Systems

2017 ◽  
Vol 25 (4) ◽  
pp. 1003-1026 ◽  
Author(s):  
Raquel García-Blanco ◽  
Pedro Díez ◽  
Domenico Borzacchiello ◽  
Francisco Chinesta
Keyword(s):  
Real Time ◽  
Power Flow ◽  
Flow Problem ◽  
Power Flow Problem

Theoretical Line Loss Calculation of Distribution Network Considering Wind Turbine Power Constraint

2014 ◽  
Vol 986-987 ◽  
pp. 630-634 ◽  
Author(s):  
Ke Li ◽  
Zhen Quan Sun ◽  
Meng Wang
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Wind Turbine ◽  
Real Time ◽  
Power Flow ◽  
Time Measurement ◽  
Power Constraint ◽  
Real Time Measurement ◽  
Theoretical Line ◽  
Line Loss

This paper presents a theoretical line loss calculation of distribution network containing an uncertainty power of wind turbine. First, this paper establishes the theoretical line loss mathematical model considering wind turbine power constraint within the sampling period. Then this paper gets multi group wind turbine output data satisfied the power constraints through Monte Carlo simulation. By combining with the first power coefficient method and Monte Carlo simulation technique, this paper also generates multi groups load pseudo measurement test of non real time. By combining the real-time measurement of power flow calculation, a group of simulated data with minimum error between the power flow results and the real time measurement are selected. Finally based on the selected pseudo measurement, the theoretical line loss within the given time period based on periodic accumulative calculation of real-time measurement are calculated. 14 nodes example is given to verify the accuracy and practicality of the algorithm.

Real-time demand response of thermostatic load with active control

2018 ◽  
Vol 100 (4) ◽  
pp. 2649-2658 ◽  
Author(s):  
Ahmet Doğan ◽  
Mustafa Alçı
Keyword(s):  
Real Time ◽  
Active Control ◽  
Demand Response

scholarly journals Local Market for TSO and DSO Reactive Power Provision Using DSO Grid Resources

Energies ◽  
2020 ◽  
Vol 13 (13) ◽  
pp. 3442
Author(s):  
Fábio Retorta ◽  
João Aguiar ◽  
Igor Rezende ◽  
José Villar ◽  
Bernardo Silva
Keyword(s):  
Real Time ◽  
Distribution System ◽  
Power Flow ◽  
Optimal Power Flow ◽  
Reactive Power ◽  
Time Interval ◽  
Local Market ◽  
Distribution Grid ◽  
Power Profile ◽  
System Operator

This paper proposes a near to real-time local market to provide reactive power to the transmission system operator (TSO), using the resources connected to a distribution grid managed by a distribution system operator (DSO). The TSO publishes a requested reactive power profile at the TSO-DSO interface for each time-interval of the next delivery period, so that market agents (managing resources of the distribution grid) can prepare and send their bids accordingly. DSO resources are the first to be mobilized, and the remaining residual reactive power is supplied by the reactive power flexibility offered in the local reactive market. Complex bids (with non-curtailability conditions) are supported to provide flexible ways of bidding fewer flexible assets (such as capacitor banks). An alternating current (AC) optimal power flow (OPF) is used to clear the bids by maximizing the social welfare to supply the TSO required reactive power profile, subject to the DSO grid constraints. A rolling window mechanism allows a continuous dispatching of reactive power, and the possibility of adapting assigned schedules to real time constraints. A simplified TSO-DSO cost assignment of the flexible reactive power used is proposed to share for settlement purposes.

Day-ahead allocation of planned power flow and real-time operation method for residential houses with photovoltaic and battery for maximum use of distributed batteries

2018 ◽  
Vol 57 (8S3) ◽  
pp. 08RH03
Author(s):  
Jindan Cui ◽  
Takahiro Sasaki ◽  
Yuzuru Ueda ◽  
Masakazu Koike ◽  
Takayuki Ishizaki ◽  
...  
Keyword(s):  
Real Time ◽  
Power Flow ◽  
Operation Method ◽  
Time Operation ◽  
Real Time Operation
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