Advanced Energy Management System Research Articles

Energy management strategy for fuel cell/battery/ultracapacitor hybrid vehicle based on fuzzy logic

In order to enhance the fuel economy of hybrid vehicle and increase the mileage of continuation of journey, a fuzzy logic control is utilized to design energy management strategies for fuel cell/battery (FC+B) hybrid vehicle and fuel cell/battery/ultra-capacitor (FC+B+UC) hybrid vehicle. The models of hybrid vehicle for FC+B and FC+B+UC structure are developed by electric vehicle simulation software ADVISOR which uses a hybrid backward/forward approach. The results demonstrate that the proposed control strategy can satisfy the power requirement for four standard driving cycles and achieve the power distribution among various power sources. The comprehensive comparisons with the power tracking control strategy which is wide adopted in ADVISOR verify that the proposed control strategy has better rationality and validity in terms of fuel economy and dynamic property in four standard driving cycles. Therefore, the proposed strategy will provide a novel approach for the advanced energy management system of hybrid vehicle.

Dynamic Optimization: Reducing Central Utility Plant Consumption by Over 50 Percent

This article describes the best practices employed in the systematicupgrade, operation and maintenance of a central utility plant (CUP) andassociated energy infrastructure. The CUP provides electrical, heatingand cooling services to a 1.4 million square foot super-regional shoppingmall in Central Pennsylvania. Since EnergyWorks’ acquisition in late 2003,numerous improvements have been made that include:1. Selective equipment upgrades2. Automation of best practices in operation and maintenance3. Designing and installing an energy management system for real-time dynamic optimization.These improvements not only reduced the plant energy consump-tion by over 50%; they also reduced the carbon footprint by over 11 mil-lion pounds per year. With advanced energy management systems inplace, the shopping mall is assured of a healthy, efficient and sustainableenergy service.

Dynamic Optimization: Reducing Central Utility Plant Consumption by Over 50 Percent

ABSTRACT This article describes the best practices employed in the systematic upgrade, operation and maintenance of a central utility plant (CUP) and associated energy infrastructure. The CUP provides electrical, heating and cooling services to a 1.4 million square foot super-regional shopping mall in Central Pennsylvania. Since Energy Works' acquisition in late 2003, numerous improvements have been made that include: Selective equipment upgrades Automation of best practices in operation and maintenance Designing and installing an energy management system for real-time dynamic optimization. These improvements not only reduced the plant energy consumption by over 50%; they also reduced the carbon footprint by over 11 million pounds per year. With advanced energy management systems in place, the shopping mall is assured of a healthy, efficient and sustainable energy service.

Modern power systems control centers: from EMS to AEMS

Traditional energy management system (EMS) plays an indispensable role in control centers of electric power systems. However, it also has several shortcomings, including lack of real-time closed-loop control, unreliable functional modules, and difficult to exchange data. The electric hybrid control theory (EHCT) has been proposed as an innovative and effective means to overcome these shortcomings. This paper argues that the EHCT provides a theoretical foundation for the advanced energy management system (AEMS) that can achieve multi-objective, near-optimal, and closed-loop control of electric power grids. This paper also discusses the significance for control centers to evolve from the traditional EMS to the AEMS. Furthermore, this paper points out that the traditional EMS can be considered as an integral part of the AEMS and that the AEMS can be built upon the traditional EMS. Thus, the resources that are currently available can be fully utilized to achieve near-optimal and closed-loop control of power system operations.

Advanced EMS and its trial operation in Shanghai power system

To meet the demand of high stability, high quality, and low losses of power systems, the advanced energy management system (AEMS) is established and revealed in this bulletin, which has been put into trial operation in Shanghai power system for almost half a year. The AEMS is novel from all aspects covering idea, theory, method, software, and engineering. The essence of AEMS is exercising the hybrid automatic control theory and technology to realize multi-objective optimal closed-loop control of power systems. Based on an “event-driven” strategy, the AEMS transforms multi-objective optimal control problems into event identification and elimination by defining the unsatisfactory states of a power system as events. This bulletin concisely presents the theory and main advantages of AEMS, as well as its implementation in Shanghai power system.

Environmentally friendly energy system models using material circulation and energy cascade—the optimization work

The objectives of this paper are to develop advanced energy management systems for an energy efficient and environmentally friendly society and to provide an assessment model for zero emission (of materials) and energy cascade systems. This paper introduces two types of advanced energy system models: energy cascade with zero emission by material circulation and a super environmentally benign industrial district from the viewpoint of complete energy utilization and environment conservation. An assessment model is developed to quantify the energy saving effect from the advanced energy cascade systems which consist of four major industry groups and 12 subgroups in Japan. The results show that an energy saving effect of 25% could be realized from the zero emission and energy cascade systems. It is, moreover, found that the minimum fuel and energy consumption rate could be obtained from an optimum area composition of major groups. This paper develops an energy cascade balance table which indicates the material and heat flow directions from a higher potential level to a lower potential level. The table proposes current energy consumption with respect to temperature level. The proposed energy models demonstrate how to maximize the heat utilization among various industries.

96/03879 Advanced energy management system for a Swiss utility

96/03879 Advanced energy management system for a Swiss utility

KEPCO's national control center with an advanced energy management system

The advanced energy management system of the Korea Electric Power Corporation (KEPCO) is described. Emphasis is on the power application software, computer system configuration, data acquisition subsystem, data communications, man-machine interfaces, security-constrained economic dispatch, and simulators for factory acceptance testing. Its functional overview, high system performance, and actual operating experience are also described. >

Energy-Management Systems

The drawbacks of manually controlled systems are illustrated daily in most hotels. Consider the busboy who reads a newspaper by the light of 15 large chandeliers in an otherwise vacant ballroom. New, technologically advanced energy-management systems are helping to change the picture