scholarly journals Optimal operation of integrated energy systems subject to the coupled demand constraints of electricity and natural gas

2019 ◽  
Author(s):  
Q. H. Wu ◽  
◽  
Y. J. Qin ◽  
L. L. Wu ◽  
J. H. Zheng ◽  
...  
Keyword(s):  
Natural Gas ◽  
Energy Systems ◽  
Optimal Operation ◽  
Integrated Energy Systems

scholarly journals Energy Management Scheme in Hierarchical Integrated Energy Systems with Coalition

2021 ◽  
Vol 3 (1) ◽  
pp. 34-43
Author(s):  
Nayana
Keyword(s):  
Lagrange Function ◽  
Evolutionary Process ◽  
Energy Systems ◽  
High Heat ◽  
Optimal Operation ◽  
Middle Level ◽  
Utility Company ◽  
Integrated Energy Systems ◽  
Management Scheme ◽  
The Impact

Often, coalitions are formed by the hierarchical integrated energy systems (HIESs) and their evolutionary process which is driven by the benefits of stakeholders and consolidate energy consumers and producers. Several literature have failed to analyze the operation of HIES under the impact of multiple coalitions. At the lower level, multiple users, in the middle level, the multiple distributed energy stations (DESs) and at the upper level, one natural gas and one electricity utility company structure is used for analyzing the HIES operation with a trading scheme. The Lagrange function is used for deriving the optimal operation strategy based analytical function for each probable coalition and each market participant comprising of users and the DESs. It is evident from the results that in a single coalition, the profits linked to other DESs will decrease while increasing the profit of one DES with technological enhancements, users show an aversion towards DESs with high generation coefficient while they are attracted to the ones that enable reduction of heat and electricity price. Maintaining their isolation is preferred by high heat and electricity consuming DESs at the same energy price. Other coalitions and their operations are not affected by the change in parameters of one coalition.

Commercial Integrated Energy Systems Provide Data That Advance Combined Cooling, Heating, and Power

2006 ◽  
Author(s):  
Andrei Y. Petrov ◽  
Jeanette B. Berry ◽  
Abdolreza Zaltash
Keyword(s):  
Natural Gas ◽  
System Design ◽  
Gas Turbine ◽  
Energy Systems ◽  
Modular System ◽  
Absorption Chiller ◽  
Fuel Use ◽  
Oak Ridge ◽  
Integrated Energy Systems ◽  
Combined Cooling

The Department of Energy (DOE), though Oak Ridge National Laboratory (ORNL), has worked in partnership with industry to develop highly-efficient Integrated Energy Systems (IES) that provide combined cooling, heating, and power (CHP). Equipment configurations and performance have been optimized and system construction has been simplified, resulting in lower design and installation costs. Consequently, government-industry partnerships are achieving the goal of promoting replication of these advanced systems. This paper describes and presents data collected during the operation of on-site power generation systems developed and implemented by DOE/ORNL-industry teams: (1) Burns & McDonnell and (2) Honeywell Labs. The Burns & McDonnell IES is operated by Austin Energy, the municipal utility in Austin, Texas. The gas turbine produces 4.5-MW of electricity, and its exhaust drives a 2,500-ton absorption chiller. The featured project implements a modular system design that is being used to construct a medical district utility at Dell Children's Medical Center of Central Texas-another government-industry project carried out in partnership with Austin Energy. The Honeywell IES at Ft. Bragg, North Carolina, is anchored by 5.7-MW natural-gas turbine that uses turbine exhaust to drive a 1,000-ton absorption chiller and/or an 80,000-lb/h heat recovery steam generator. An optimization software program provides system operators with hour-by-hour information on system costs associated with various operating scenarios. The project developed reference designs for 1.2-5.7 MW turbine-based systems to better communicate options for system design and facilitate feasibility studies. These systems demonstrate the thermal and economic value of "waste heat" by providing space heating and/or cooling with no additional fuel use. Field data confirms that the fuel use efficiency of these combined cooling, heating and power systems approaches 80% based on the higher heating value (HHV) of natural gas.

Modeling and optimal operation of community integrated energy systems: A case study from China

2018 ◽  
Vol 230 ◽  
pp. 1242-1254 ◽  
Author(s):  
Chengshan Wang ◽  
Chaoxian Lv ◽  
Peng Li ◽  
Guanyu Song ◽  
Shuquan Li ◽  
...  
Keyword(s):  
Energy Systems ◽  
Optimal Operation ◽  
Integrated Energy Systems

scholarly journals Effect of P2G on Flexibility in Integrated Power-Natural Gas-Heating Energy Systems with Gas Storage

Energies ◽  
2021 ◽  
Vol 14 (1) ◽  
pp. 196
Author(s):  
Jing Liu ◽  
Wei Sun ◽  
Jinghao Yan
Keyword(s):  
Natural Gas ◽  
Energy Systems ◽  
High Growth ◽  
Gas Storage ◽  
Optimal Operation ◽  
Environmental Benefits ◽  
Low Carbon ◽  
Co2 Emission Reduction ◽  
Flexible Resources ◽  
Gas Heating

The low carbon transition requires the high growth of renewable generation penetration in energy systems to ultimately achieve net-zero carbon target. To ensure the reliable operation of energy systems with high intermittent renewable output, it is critical to have sufficient flexible resources to avoid curtailment. Therefore, the integrated power-natural gas-heating energy systems with power to gas (P2G) and gas storage has attracted great research interest especially on the combined operation method to enhance the flexibility provision between each other. In this paper, taking heating demand, P2G and gas storage into consideration, a multi-objective optimal operation strategy of integrated power-natural gas-heating energy systems is presented to obtain the maximum economic and environmental benefits. Furthermore, a novel model of flexibility metric is proposed based on redundant linepack and gas storage. Case studies without P2G and with P2G are carried out on integrated IEEE 39-bus power and Belgian 20-node gas system. Simulation results demonstrate that P2G not only can be beneficial for operation of the integrated energy systems in terms of total operational cost decline from M$2.510 to M$2.503, CO2 emission reduction from 62,860 ton to 62,240 ton and wind curtailment decrease from 25.58% to 4.22% but also has significant effect on flexibility improvement of a 71.72% increase.

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