Integrated Energy Management System: Concept, Design, and Demonstration in China

Sun, Hongbin; Guo, Qinglai; Zhang, Boming; Wu, Wenchuan; Wang, Bin; Shen, Xinwei; Wang, Jianhui

doi:10.1109/mele.2018.2816842

Cited by 96 publications

(25 citation statements)

References 2 publications

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“…ombined heat and power systems have been deployed all over the world due to the high efficiency and low carbon emission [1] [2]. However, it is challenging to dispatch combined heat and power systems synchronously because it couples two energy systems with different time scales: With the requirement of real-time power balance, the electric power system is adjusted in minutes [3], whereas the heating system has much higher inertia and is usually adjusted in hours [4] [5].…”

Section: A Background and Motivationmentioning

confidence: 99%

Asynchronous Economic Dispatch for Combined Heat and Power Systems

Qin

Sun

Guo

2020

IEEE Open J. Power Energy

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In the day-ahead economic dispatch of combined heat and power systems, the electric power system is adjusted in minutes because of the short dynamic time and the requirement of real-time power balance, while the heating system is dispatched in hours due to its large inertia and long dynamic process. However, the different dispatch time scales of electricity and heat are ignored by existing synchronous dispatch methods, which limits the improvement of system efficiency. To address this challenge, in this paper, the asynchronous dispatch method is proposed and instantiated by two different dispatch models featuring a short electric dispatch time scale and a long heat dispatch time scale. Case studies demonstrate the asynchronous dispatch method can overcome the efficiency and reliability problems caused by the existing synchronous dispatch methods.  Index Terms-combined heat and power system, different time scales, economic dispatch, dispatch interval.

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Section: A Background and Motivationmentioning

confidence: 99%

Asynchronous Economic Dispatch for Combined Heat and Power Systems

Qin

Sun

Guo

2020

IEEE Open J. Power Energy

Self Cite

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“…The idea and framework of the IEMS was developed in [18] for the first time over the world. It is the first IEMS developed over the world and is considered as the brain of the MES.…”

Section: Introductionmentioning

confidence: 99%

Day-ahead stochastic scheduling of integrated multi-energy system for flexibility synergy and uncertainty balancing

Turk

Zhang

et al. 2020

Energy

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Secure operation of the power system is challenged by the high level of uncertainty and fluctuation introduced by renewable energy sources. More flexibility is needed to cope with the uncertainty and improve the utilization of renewable energy. A prominent solution to provide flexibility, and simultaneously increase the efficiency of the system, is the integration of different energy sectors. This paper proposes a two-stage stochastic scheduling scheme of an integrated multi-energy system, which considers the wind power uncertainty and the synergy of different energy sectors to achieve the optimal economic operation of the whole system with minimum curtailment of wind power. In the first stage, energy and reserve scheduling of generating units is performed, while accommodation of wind power production is realized through reserves in the second stage. In the proposed scheme, the electric power system, natural gas system, and district heating system are coordinated to achieve more flexibility, both in the day-ahead and real-time stage. The stochasticity of the wind power uncertainty is represented by realistic scenarios with corresponding probabilities, which are obtained from a scenario generation algorithm based on historical observations taking into account the temporal correlation of wind power. The simulation results on a smallscale test system show that both, the economic efficiency and wind power utilization, have been improved with more flexibility and more reliable scenario set. It is shown, that the total system cost is reduced and reserves are optimized.

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“…Each system is lacking in necessary coupling connection and coordinated control, so that the energy utilization rate is low, and energy waste phenomenon is serious. The inefficient energy utilization is hardly in line with the goals of social sustainability and reducing carbon emission [1][2][3]. Therefore, the Energy Internet has been proposed to solve existing problems in energy production, transmission, and utilization [4,5].…”

Section: Introductionmentioning

confidence: 99%

Steady-State Power Flow Analysis of Cold-Thermal-Electric Integrated Energy System Based on Unified Power Flow Model

et al. 2019

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The integrated energy system includes various energy forms, complex operation modes and tight coupling links, which bring challenges to its steady-state modeling and steady-state power flow calculation. In order to study the steady-state characteristics of the integrated energy system, the topological structure of the cold-thermal-electric integrated energy system is given firstly. Then, the steady-state model of the power subsystem, the thermal subsystem, the cold subsystem and the distributed energy station are established, the unified power flow model is established, and the Newton Raphson algorithm is used to solve the unified power flow model. Finally, the influence of the key technical parameters on the steady-state power flow of the integrated energy system is analyzed. Research results show that the photovoltaic power generation plays a supporting role in the voltage of each bus; with the increase of electric load power, the unit value of bus voltage decreases continuously; the water supply temperature of the source node has a greater impact on the steady-state flow in the pipeline and the water supply temperature of each node; the pipeline length of the heat network has a greater impact on the end temperature of the pipeline, the water supply temperature, and the return water temperature of each node. The analysis results can support the planning, design, and optimal operation of the integrated energy system.

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Integrated Energy Management System: Concept, Design, and Demonstration in China

Cited by 96 publications

References 2 publications

Asynchronous Economic Dispatch for Combined Heat and Power Systems

Asynchronous Economic Dispatch for Combined Heat and Power Systems

Day-ahead stochastic scheduling of integrated multi-energy system for flexibility synergy and uncertainty balancing

Steady-State Power Flow Analysis of Cold-Thermal-Electric Integrated Energy System Based on Unified Power Flow Model

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