Optimization of communication capacity for load control considering shared risk link group in source-grid-load system. (November 2020)

• Record Type: Journal Article
• Authors: Liu, Lin; Li, Bin; Qi, Bing; Ye, Xin; Sun, Yi; Tian, Shiming; Zhu, Chaoyang; Xi, Peifeng
• Is Part Of: International journal of electrical power & energy systems. Volume 122(2020)
• Publication Date: 2020-11
• Subjects: Source-grid-load system -- Communication network -- Shared risk link group -- Optimization -- p-cycle; Electrical engineering -- Periodicals; Electric power systems -- Periodicals; Électrotechnique -- Périodiques; Réseaux électriques (Énergie) -- Périodiques; Electric power systems; Electrical engineering; Periodicals; 621.3
• DOI: 10.1016/j.ijepes.2020.106166
• Languages: English
• ISSNs: 0142-0615

Abstract

Highlights: Modeling shared risk link group (SRLG) of communication network for load control. Multiplexing communication path for load control based on p-cycle technique. Realizing joint optimization of working and backup paths for load control. Simulating the influence of SRLG numbers with different topologies. Abstract: In the context of energy wide-area transmission and large-scale access of distributed renewable energy, to improve the elasticity of the grid, Jiangsu Province has established a source-grid-load system (SGLS), which can optimize the dispatching of power supply, power grid, and power load jointly.This paper focuses on optimizing the communication capacity for load control consider shared risk link group (SRLG) failure in SGLS. We propose a multicast routing algorithm to provide working communication paths for staged load control by organizing the load control terminals in the same stage into a multicast group. Next, we design a protection algorithm by modeling SRLG based on p-cycle technique to provide backup communication paths for load control. Then we present a joint optimization algorithm of multicast routing and protection (JOMRP) based on mixed integer linear program (MILP) to improve the resource utilization rate of the communication for load control. Finally, we simulate in electric power communication network topology of Jiangsu Province. Simulations demonstrate the proposed algorithm can promote the utilization rate of the communication links for load control when SRLG failure occurs.