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Summary form only given. For many utilities, the pole inventory ads up to the highest budget line item to replace. Some utilities face an enormous amount of poles approaching 60-70 years of life. The question is whether this is end-of-life and how many will break at the same time. Of course, deterioration is not only a function of age and pole breakage due to deterioration of wood fiber strength is...
This is a summary of the presentation of the presentation at the panel entitled "international power engineering research collaborations" at the 2006 IEEE/PES GM in Montreal, Quebec, Canada. The panelist shares some thoughts on collaborative research efforts
Summary form only given. Utilities have used for years indicators such as loading, hot spot and top oil temperatures to determine ratings and health of substation transformers where the required data is readily available. However, the same level of data is not available for low voltage distribution transformers and loading prediction is difficult. Overload failures of distribution transformers, while...
In order to automate the analysis of SCADA and digital fault recorder (DFR) data for a transmission network operator in the UK, the authors have developed an industrial strength multi-agent system entitled protection engineering diagnostic agents (PEDA). The PEDA system integrates a number of legacy intelligent systems for analyzing power system data as autonomous intelligent agents. The integration...
The effectiveness of potential inter-country interconnected power system in Northeast Asia is discussed. The necessity of joint international investigations in this area via joint research groups is suggested. The training of future researches for joint work is very important
The development of ship propulsion synchronous motors with high temperature superconductor (HTS) field windings for Naval electric ship applications has progressed to the point where a full scale motor is now under construction. A 5 MW, 230-rpm prototype ship propulsion motor was built and tested by the Center for Advanced Power Systems (CAPS) on behalf of U.S. Office of Naval Research (ONR). It met...
Synchronous machines employing high-temperature superconductors offer several significant advantages compared to conventional ones. The development of superconducting electrical machines has a long tradition within Siemens AG. Starting with low-temperature superconducting materials in the 1970s, more than 30 years of experience in the field of superconducting electrical machinery have been accumulated...
This is a summary of the presentation on the panel entitled "Power Industry Workforce of the Future" at the 2006 IEEE/PES GM in Montreal, Quebec, Canada
The distribution system analysis subcommittee is establishing reference cases for induction machine modeling in distribution system analysis of unbalanced three-phase systems. The first proposed test case has been solved for unbalanced power flow, and for a single line-to-ground fault, in a commercial software product with good results. Two of the radial test feeders have also been solved
The effect of aging assets on reliability has become an important area of study for BC hydro non-integrated area (NIA), due to the fact that many of the assets are approaching the age of retirement. System reliability assessment methods that incorporate the increasing probability of end-of-life failures for these assets are required. This paper outlines one risk assessment method for diesel generation...
Virtually every crucial economic and social function depends on the secure, reliable operation of energy, telecommunications, transportation, financial, and other infrastructures. The nature of electricity demand is undergoing a profound shift in industrialized nations across the globe. From a strategic R & D viewpoint, agility and robustness/survivability of large-scale dynamic networks that...
As the power systems in the United States become increasingly large, complex, and interconnected, the traditional relays are proving to be inadequate against blackouts. More "intelligent" relays are therefore needed to meet the security and reliability needs of the future power grid. In this paper, we propose a new logic for decision making and over-current relay setting. The proposed "smart"...
This paper presents and discusses some typical market clearing and dispatch mechanisms based on security-constrained (SC) optimal power flow (OPF) techniques that are currently being utilized in various jurisdictions throughout the world, concentrating on how system security is accounted for in these auction systems and the effect that this has on the system dispatch schedules and energy prices. The...
This paper introduces the fundamental concept of locational marginal price (LMP) in the electricity markets, and presents some special observations on LMP. Under market environment, LMP based settlement strategy is used to determine the amount of money earned from ISO by the energy sellers and paid to ISO by the energy buyers. Thus, depending on different market designs, four different calculation...
California electricity industry was restructured by way of California Assembly Bill 1890 resulting among other entities California Independent System Operator (California ISO) and the power exchange. Earlier in 2000 the Power Exchange became defunct necessitating the redesign of the California electricity market structure. In the year 2007 California ISO will be implementing in production a new locational...
This paper presents coordination of distributed generation (DG) and step voltage regulator (SVR) operations for improved distribution system voltage regulations. Examples include DG with induction and synchronous generators and SVRs with different control modes
In this paper, an agent-based negotiation method for bilateral contracts of energy is proposed. We construct similarity trees for the seller and buyer agents based on their preferences in the market, and then through a paring process find the most suitable pairs of sellers and buyers to negotiate for signing bilateral contracts. We continue this process until there are no buyers left in the market...
The legacy paradigm for electricity service in most of the electrified world today is based on the centralized generation-transmission-distribution infrastructure that evolved under a regulated environment. More recently, a quest for effective economic investments, responsive markets, and sensitivity to the availability of resources, has led to various degrees of deregulation and unbundling of services...
The utilization of power quality devices in the power networks can determine the protection system malfunctioning and hence the persons electrical safety can be compromised. The purpose of this paper is the evaluation of the shapes of voltage and current waves flowing into the human body in case of indirect contacts for various grounding configurations of the electric system, considering the human...
It is well documented that inappropriate setting of HVDC controller could cause dynamic instability of an AC/DC system. In order to analyze the mechanism of this phenomenon, this paper proposes a general theoretical equation of electric damping coefficient of a HVDC link by using the complex torque coefficient method. With the help of this equation, the damping characteristics of different types of...
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