Decoupled Secure Economic Dispatch Algorithm for Power Systems Operation

Abstract

This paper describes an algorithm which can be used to determine the optimal power flows of a network via the Dommel‐Tinney approach with or without the incorporation of security constraints; security constraints are properly handled via sensitivity analysis and least‐squares minimisation techniques. The algorithm can also determine the security enhancement of a network without taking the economics of operation into consideration. The refined second‐order loadflow method using rectangular coordinates is employed and the contingencies are determined by second‐order corrections on the base‐case; the computational aspects of this development are highlighted in the appropriate sections. The main emphasis of this paper is on numerical methods.

Decoupled Secure Economic Dispatch Algorithm for Power System Operation: System Tests

“…The results shown in Table 1 confirms the improvement in the convergence behaviour of the second order load-flow method as reported in [1].…”

“…The main aim of this paper is to report on results from tests carried out using the algorithm described by the author in [1]. Future developments would include investigations into improving the basic second order load-flow technique for en hanced convergence pattern without sacrificing accuracy of solution.…”

“…Three mathematical developments were described in the formulation of the al gorithm described in [1] as:…”