TCM considering EIZs' integration. Issue 16 (29th November 2018)

• Record Type: Journal Article
• Authors: Liu, Yangyang; Lian, Hongbo; Tang, Xiaowei; Shen, Zhongqi; Li, Jiarui; Liu, Lian
• Is Part Of: Journal of engineering. Volume 2019:Issue 16(2019)
• Page Start: 850
• Page End: 855
• Publication Date: 2018-11-29
• Subjects: pricing -- optimal control -- power grids -- power transmission reliability -- power system management -- power transmission control -- load dispatching; simplified Songjiang transmission system -- TCM -- reliability -- power systems -- energy internet zones -- demonstration projects -- multienergy flows -- demand response -- gas energy balance -- transmission congestion management -- multienergy flow requirements -- EIZ optimal controlling strategy -- optimal redispatch problem -- EIZ electricity load demands -- peak−valley difference -- EIZ controlling strategy -- output adjustment schedules; Engineering -- Periodicals; Engineering; Electronic journals; Periodicals; 620.005
• DOI: 10.1049/joe.2018.8721
• Languages: English
• ISSNs: 2051-3305

Abstract

Abstract : Transmission congestion threatens the reliability and economy of power systems. It becomes more severe with the increase of load demands and peak−valley differences. In recent years, energy internet zones (EIZs) have attracted wide attention, and many demonstration projects have been developed. EIZs connect the supply and consumption of multi‐energy like electricity, gas, heat, and cooling. Thus, EIZs' electricity load demands can be flexibly adjusted by controlling their multi‐energy flows. The controlling method should consider not only demand response but also heat, cooling, and gas energy balance. The integration of EIZs provides a new solution for transmission congestion management (TCM). First, an EIZ's optimal controlling strategy considering its multi‐energy flow requirements was proposed. Then, the optimal re‐dispatch problem for TCM was studied, taking into account EIZs' and traditional generators' adjustment costs. Re‐dispatch determines the output adjustment schedules and compensation prices, while the EIZ's controlling strategy controls multi‐energies' supply and consumption. A simplified Songjiang transmission system in Shanghai was adopted to illustrate the proposed methods. It was proven that the EIZs' integration could reduce the re‐dispatch costs in TCM and increase EIZs' profits.