Journal ArticleDOI
Optimal operation solutions of power systems with transient stability constraints
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TLDR
In this article, the optimal power flow with transient stability constraints (OTS) is equivalently converted into an optimization problem in the Euclidean space via a constraint transcription, which can be viewed as an initial value problem for all disturbances and solved by any standard nonlinear programming techniques adopted by OPF.Abstract:
The computation of an optimal operation point in power systems is a nonlinear optimization problem in functional space, which is not easy to deal with precisely, even for small-scale power systems. On the other hand, the emergence of competitive power markets makes optimal power flow (OPF) with transient stability constraints increasingly important because the conventionally heuristic evaluation for the operation point can produce a discrimination among market players in the deregulated power systems. Instead of directly tackling this tricky problem, in this paper, OPF with transient stability constraints (OTS) is equivalently converted into an optimization problem in the Euclidean space via a constraint transcription, which can be viewed as an initial value problem for all disturbances and solved by any standard nonlinear programming techniques adopted by OPF. The transformed OTS problem has the same variables as those of OPF in form, and is tractable even for the large-scale power systems with a large number of transient stability constraints. This paper also derives the Jacobian matrices of the transient stability constraints and gives two computation algorithms based on the relaxation scheme. The numerical simulation verified the effectiveness of the proposed approach.read more
Citations
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Journal ArticleDOI
Optimal power flow: a bibliographic survey I
TL;DR: Optimal power flow (OPF) has become one of the most important and widely studied nonlinear optimization problems as mentioned in this paper, and there is an extremely wide variety of OPF formulations and solution methods.
Journal ArticleDOI
Application of Differential Evolution Algorithm for Transient Stability Constrained Optimal Power Flow
TL;DR: In this paper, a robust and efficient method for solving TSCOPF problems based on differential evolution (DE) is developed, which is a new branch of evolutionary algorithms with strong ability in searching global optimal solutions of highly nonlinear and nonconvex problems.
Journal ArticleDOI
Securing Transient Stability Using Time-Domain Simulations Within an Optimal Power Flow
TL;DR: In this paper, a well-behaved optimal power flow model with embedded transient stability constraints is proposed for both dispatching and redispatching in a multi-machine system, where the model includes discrete time equations describing the time evolution of all machines in the system.
Journal ArticleDOI
A solution of optimal power flow with multicontingency transient stability constraints
TL;DR: In this paper, a formulation of the multicontingency transient stability constrained optimal power flow (MC-TSCOPF) problem is presented and a method to solve it is proposed.
Journal ArticleDOI
Transient stability constrained optimal power flow using particle swarm optimisation
TL;DR: In this article, a particle swarm optimisation (PSO) technique is proposed for the transient-stability constrained optimal power flow (TSCOPF) problem, which is formulated as an extended OPF with additional rotor angle inequality constraints.
References
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