Open AccessIES configuration method considering peak‐valley differences of tie lines and operation costs of power grids
Author(s) -
Zhang Xiaohui,
Li Jiaxin,
Zhang Lu,
Wu Bangxu,
Wang Liang,
Tang Wei,
Chen Hui,
Guo Yunjing
Publication year - 2020
Publication title -
iet energy systems integration
Language(s) - English
Resource type - Journals
ISSN - 2516-8401
DOI - 10.1049/iet-esi.2019.0064
Subject(s) - electric power transmission , power (physics) , grid , tie line , line (geometry) , computer science , transmission line , electric power system , reliability engineering , energy (signal processing) , power transmission , mathematical optimization , electrical engineering , mathematics , engineering , statistics , telecommunications , physics , geometry , quantum mechanics
The peak–valley difference of power grid will be enlarged significantly with the increasing number of integrated energy systems (IESs) connecting to power grids, which may cause a high operation cost and voltage violations. This study proposes an IES configuration method considering the peak–valley difference of the tie line between IES and power grid. An optimal configuration model of IES is established, which takes the sum of the annual operating cost of the power grid and annual cost of IES as objectives, while the tie line transmission power between IES and power grid are considered as constraints. The elite energy reserve genetic algorithm and branch and bound method are used to solve the proposed model, while the optimal power flow is used to calculate the grid operation cost under a given transmission power of the tie line. The simulation results of an improved IEEE30 node system verify the validity of the proposed method.