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Author: h.gras
Type: Model
Downloaded: 71 times
Date: 2023-05-30

Controlled RLC

Description:
Controllable inductance and resistanced. The values can be varied during the time-domain simulation.

Tag(s): RLC, inductance, resistance, control, capacitance, controllable, vary

Author: n.sene
Type: Publication
Date: 2015-04-01

DISPERSED ENERGY RESOURCES SCHEDULING FOR THE INTENTIONAL ISLANDING OPERATION OF DISTRIBUTION SYSTEMS

Description:
The paper presents an algorithm for the automatic optimal scheduling of dispersed energy resources (DERs) and of under-load tap changers (ULTCs) position. The aim of the scheduling problem consists in... see more the minimization of the voltage deviations with respect the rated value, of the DERs production deviation with respect the maximum efficiency point, and of the network losses.
The system incorporates also a procedure to facilitate the intentional islanding maneuver of the distribution network. The adopted approach is based on iterative solution of linear-constrained multi-objective optimization problems. The nonlinear power flow relationships are linearized by means of the calculation of sensitivity coefficients to small variations of the control variables (namely, controllable DERs power outputs and ULTCs positions). The algorithm is implemented in Matlab environment to exploit different solvers and suitably interfaced with EMTP-RV for three-phase power flow detailed calculations. In particular, two optimization solvers are adopted: the least square method and the goal attainment approach. The relevant results are compared using the IEEE 34-node distribution feeder as test case.

Authors: A. Borghetti, C.A. Nucci, M. Paolone, M. Bosetti

Tag(s): Dispersed generation, active distribution networks, islanding operation.

Author: gerinlajoie.luc
Type: Model
Downloaded: 217 times
Date: 2012-06-18

Sequence controlled voltage and current sources.

Description:
Three sequences voltage and current sources are proposed, the positive, negative and zero sequences. The magnitude and the angle are controllable; the carrier is given by the user.

Theses p... see morearts could by used for artificial power swing or unbalances voltages.

Tag(s): Source