scholarly journals A data-driven distributionally robust operation model for urban integrated energy system

2021 ◽  
Vol 302 ◽  
pp. 117493
Author(s):  
Changming Chen ◽  
Xueyan Wu ◽  
Yan Li ◽  
Xiaojun Zhu ◽  
Zesen Li ◽  
...  

Energies ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2908
Author(s):  
Aidong Zeng ◽  
Sipeng Hao ◽  
Jia Ning ◽  
Qingshan Xu ◽  
Ling Jiang

A real-time error correction operation model for an integrated energy system is proposed in this paper, based on the analysis of the real-time optimized operation structure of an integrated energy system and the characteristics of the system. The model makes real-time corrections to the day-ahead operation strategy of the integrated energy system, to offset forecast errors from the renewable power generation system and multi-energy load system. When unbalanced power occurs in the system due to prediction errors, the model comprehensively considers the total capacity of each energy supply and energy storage equipment, adjustable margin, power climbing speed and adjustment cost, to formulate the droop rate which determines the unbalanced power that each device will undertake at the next time interval, while taking the day-ahead dispatching goals of the system into consideration. The case study shows that the dispatching strategy obtained by the real-time error correction operation model makes the power output change trend of the energy supply equipment consistent with the day-ahead dispatching plan at the next time interval, which ensures the safety, stability and economy of the real-time operation of the integrated energy system.


2019 ◽  
Vol 11 (23) ◽  
pp. 6699
Author(s):  
Suyang Zhou ◽  
Zijian Hu ◽  
Zhi Zhong ◽  
Di He ◽  
Meng Jiang

The convergence of energy security and environmental protection has given birth to the development of integrated energy systems (IES). However, the different physical characteristics and complex coupling of different energy sources have deeply troubled researchers. With the rapid development of AI and big data, some attempts to apply data-driven methods to IES have been made. Data-driven technologies aim to abandon complex IES modeling, instead mining the mapping relationships between different parameters based on massive volumes of operating data. However, integrated energy system construction is still in the initial stage of development and operational data are difficult to obtain, or the operational scenarios contained in the data are not enough to support data-driven technologies. In this paper, we first propose an IES operating scenario generator, based on a Generative Adversarial Network (GAN), to produce high quality IES operational data, including energy price, load, and generator output. We estimate the quality of the generated data, in both visual and quantitative aspects. Secondly, we propose a control strategy based on the Q-learning algorithm for a renewable energy and storage system with high uncertainty. The agent can accurately map between the control strategy and the operating states. Furthermore, we use the original data set and the expanded data set to train an agent; the latter works better, confirming that the generated data complements the original data set and enriches the running scenarios.


Energies ◽  
2020 ◽  
Vol 13 (24) ◽  
pp. 6607
Author(s):  
Guoliang Zhang ◽  
Suhua Lou ◽  
Yaowu Wu ◽  
Yang Wu ◽  
Xiangfeng Wen

To promote the collaborative development of the bio-natural gas (BNG) industry and the integrated energy system (IES), this paper proposes a new commerce operation model considering the gas price adjustment mechanism for the IES with the utilization of bio-natural gas. The bi-level optimization model is used to simulate the clearing process within the open energy market framework, and the uncertainties of variable renewable energy output are modeled with a set of scenarios through the stochastic programming approach. In the upper-level model, the energy management center adjusts the bio-natural gas price rationally to minimize the expected total operating cost and release the price signal to the lower-level model; the lower-level model simulates the sub-markets clearing process to formulate detailed operation schemes. The bi-level model is transformed into a mathematical programming problem with equilibrium constraints (MPEC) through the Karush–Kuhn–Tucher (KKT) condition of the lower-level model, and the nonlinear model is converted into a mixed-integer linear programming problem and solved. The numerical results verified the effectiveness of the proposed model.


2019 ◽  
Vol 14 (3) ◽  
pp. 352-363 ◽  
Author(s):  
Chenlu Mu ◽  
Tao Ding ◽  
Ziyu Zeng ◽  
Peiyun Liu ◽  
Yuankang He ◽  
...  

Energy ◽  
2021 ◽  
Vol 219 ◽  
pp. 119629
Author(s):  
Fei Mei ◽  
Jiatang Zhang ◽  
Jixiang Lu ◽  
Jinjun Lu ◽  
Yuhan Jiang ◽  
...  

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