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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...
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...
There is a general utilization of reliability models throughout the world as the advantages of probabilistic methods over the deterministic approaches to planning, designing, operating and maintaining the electric utility systems have clearly been recognized. Quantitative system reliability planning is essentially linked with equipment forced outage statistics computed from operating experience records...
Summary form only given. With the advent of ISOs , RTOs, reliability authorities, planning authorities, and others, maintaining large databases of system transmission network and generation models has become one of the critical factors in the success of such organizations. The size of the system model databases grow rapidly with the merging and consolidation of territories served by various entities...
In Germany 18 GW wind power will have been installed by the end of 2005. Until 2020, this figure reaches the 50 GW mark. Based on the results of recent studies and on the experience with existing wind projects modification of the existing grid code for connection and operation of wind farms in the high voltage grid is necessary. The paper discusses main issues of the suggested requirements by highlighting...
The principal objective of the asset management in a power distribution utility enterprise (DUE) is to guide the acquisition, use and disposal of distribution system assets to provide the level of service required by customers in the cost-effective manner, encompassing the strategic planning, maintenance and utilization and operation of a physical resource throughout its life. This study categorizes...
Two observations are made based on these results. First, from the economics viewpoint, the GENCO ought to make necessary investments for meeting the future demand and securing its financial return over the 15-year horizon. Second, from the reliability viewpoint, certain units must be added to enhance the system reliability, which is the most important aspect of the power system operation. The case...
Summary form only given. Underground cable form a vast unknown asset base that behaves similar to other assets that can be more easily inspected and maintained. Different from other equipment categories, underground cables can not easily be inspected, may have unknown traces, type, make and models and have a certain length. This makes statistical analysis and practical measures on cable condition...
In this paper, a new probabilistic generation modeling method which can address the characteristics of changed electricity industry is proposed. The major contribution of this paper can be captured in the development of a probabilistic generation modeling considering generator maintenance outage and in the classification of market demand into multiple demand clusters for the applications to electricity...
Photovoltaic (PV) power system provides an effective method of power generation; this is particularly relevant to developing countries, where the demographics show that the majority of the populations are settled in remote and isolated settlements. The challenge facing these settlements is that they generally have no access to the electric grid and often lack basic infrastructure. Technological developments...
This paper describes how asset probabilities of failure can be derived from life expectancy curves that are based on asset age, failure data and specific asset knowledge. It is shown how asset failure probabilities can then be adjusted for individual assets through measurement of the actual asset condition by the application of Health Indices. This allows utilities to focus their attention on the...
Summary form only given. A comprehensive methodology is developed for the analysis of power system vulnerability with respect to energy shortage, capacity shortage and power system failures. The basic method is risk analysis, where risk is defined in terms of the probability of events and their consequences. The objective is to identify medium and high-risk situations that require corrective actions...
This paper identifies new information integration requirements related to operation, marketing, and maintenance of a power system. A Web-services infrastructure for information integration in power systems is proposed. The objective is to develop an open, flexible, and scaleable framework with higher cooperation and integration capability. Some design issues for implementing a Web services-based SCADA...
With the implementation of electric power industry reform the utilities are now active in looking for effective ways to improve the economic efficiency. One area in particular, the equipment maintenance, is being scrutinized for reducing costs while keeping a reasonable level of the reliability in the overall system. Here the conventional RCM requires the trade-off between the upfront maintenance...
The last ten years have seen a steadily growing awareness across industries of the benefits of asset management. In the power industry, asset management has primarily focused on means to extend the lifetime of the transformers, cables, switchgear, and other critical components needed for the secure delivery of energy to the customers. However, with the new distribution automation concepts, with more...
The reliability of a transmission and distribution system can be significantly improved by employing a predictive maintenance program. For such a program to succeed, the condition of the total system must first be established. This has been accomplished by applying a totally passive diagnostic technique that analyzes radio frequency (RF) pulses emitted by a cable system while it is energized in service...
This paper explores the available control options for enabling wind power generation plants to participate on the maintenance of system frequency following a major power imbalance. Taking the currently employed control structures for wind generators as the baseline case, possible expansions and additional features have been discussed. The options include voltage or alternatively frequency dependent...
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