access icon free Distribution network reconfiguration comprehensively considering N−1 security and network loss

Efficiency pursuit of the distribution system operation should be on the premise of security. This study proposes the network reconfiguration (NR) approach comprehensively considering N−1 security and network loss. A new approach called distribution system security region (DSSR) is first applied in NR problem. The DSSR is the feasible operation space of a system within N−1 security criterion and can quantify the N−1 security margin. Then, the NR is formulated by using the minimum network loss as objective function and the N−1 security margin, which is provided by the DSSR, as constraints. Moreover, the security margin constraints can be customised for each feeder individually, yielding proper compromises between security-related and efficient concerns. Different NR results for multiple security and efficiency requirements are presented on an extended IEEE-RBTS test system. Compared with the traditional minimum-loss NR, the proposed approach reduces the network loss as much as possible with desired security margin, well balancing the security and efficiency of NR.

Inspec keywords: losses; power system security; distribution networks

Other keywords: IEEE-RBTS test system; objective function; distribution system security region; network reconfiguration approach; DSSR; distribution network reconfiguration; network loss; NR approach; N−1 security criterion; N−1 security margin; security margin constraints

Subjects: Power system control; Distribution networks

http://iet.metastore.ingenta.com/content/journals/10.1049/iet-gtd.2017.0820
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