A combined pool/bilateral dispatch model for electricity markets with security constraints

Ingeniería y Ciencia

Granada-Echeverri, Mauricio²  Gallego-Pareja, Luis A³  López-Lezama, Jesús María¹ 

[1] Universidad de Antioquia, Medellín, Colombia;Universidad Tecnológica de Pereira, Pereira, Colombia;UNESP, São Paulo, Brasil

关键词: :  optimal dispatch;    bilateral contracts;    energy markets;   

DOI  :  

学科分类：工程和技术（综合）

来源: Universidad E A F I T

【 摘 要 】

The secure operation of the electric power system is a challenging task for the system operator which is responsible of its coordination, control and monitoring. In most power systems security is typically handled on a multi-state approach. In which case, security criteria are incorporated by means of additional constraints, modifying the initial dispatch calculation. In this paper a generation dispatch model for competitive energy markets considering security constraints is presented. The proposed approach combines the generation dispatch related to pool and bilateral markets with coupled post-contingency optimal power flows into a single optimal dispatch model, avoiding economic inefficiencies that appear in conventional multi-stage dispatch approaches. The proposed model is linear, and as such, it is based on a DC model of the network. A 6-bus didactic system and the IEEE RTS-24 bus test system are used in order to show the operation and effectiveness of the proposed approach and to compare it with the basic pool/bilateral dispatch with no security constraints. Results show that the inclusion of security constraints lead to a higher dispatch cost. Furthermore, it was found that the enforcement of firmed bilateral contracts might lead to system congestion.

【 授权许可】

CC BY