110kv變電站設(shè)計(jì)外文翻譯--一種實(shí)用的輸配電系統(tǒng)的維護(hù)優(yōu)化計(jì)劃-plc設(shè)計(jì)-wenkub
2023-05-19 19:47:47 本頁面
【正文】 ge of being able to work with manufacturers to create an RCM program for a new generation of equipment, the utility industry, especially the electric power generation industry, has had to adopt RCM as a modification of longestablished maintenance practices at existing plants [4]. Despite the costs associated with the 一種實(shí)用的供配電系統(tǒng)的維護(hù)優(yōu)化計(jì)劃 10 implementation of these RCM programs in “midstream”, they have been found to pay for themselves in very short order. RCM, as has been mainly applied to nuclear power plants, often requires the largest amount of maintenance because of safety and environmental considerations. However, with these successful programs now operating, fossil power plants and power transmission and distribution systems have recently been getting into the mix. Because these facilities face a less restrictive regulatory environment, they should be able to directly apply the streamlines forms of RCM much more easily, thus reducing the implementation costs. The first step in revamping a maintenance program is to implement an RCM approach whichwill help establish priorities for a new program. Specifically, RCM is a set of methods and tools aimed at helping a utility to determine the minimum set of preventive maintenance tasks necessary to appropriately address critical equipment failures without promising service reliability. RCM is a structured process used to determine optimal maintenance requirements for equipment in a particular operating environment. It bines the strategies of corrective maintenance, preventive maintenance and predictive maintenance, and applies these strategies where each is appropriate, based on the consequence and frequency of functional failures. This bination produces a maintenance program which optimizes both reliability and cost effectiveness. For major pieces of equipment, such as power transformers, RCM may indicate that predictive maintenance is an attractive option, given the decreasing cost of sensor and diagnostic technology and the increasing cost of running the equipment to failure. RCM is a conditionbased maintenance program that focuses on preventing failures that are likely to be the most serious. RCM and Predictive Maintenance (PdM) analyses plement each other, and when they are performed concurrently, offer an excellent approach to maintenance optimization. In the last few years, the sophistication of monitoring equipment on the market and the falling price of electronics and puters have made the onsite monitoring applications a cost effective reality. The very basic concepts and underlying principles of the RCM can be explained very easily. Its main methodology can be reduced to the following four points: 1) preserve system functions 2) identify dominant failure modes 3) prioritize function needs so that budget can be focused on preserving most critical functions 4) select only applicable and effective maintenance tasks Some of the benefits of RCM are: 1) Reduces major corrective actions 2) Eliminates unnecessary overhauls and routine tasks that provide little benefits 3) Optimizes the frequency of required overhauls 4) Increases use of predictive technology that help with resource planning 5) Decreases use of intrusive tasks that can induce equipment failures 6) Improves costeffectiveness of routine tasks 7) Creates documented technical bases for maintenance programs 8) Allows easy implementation by incorporating existing maintenance practices that have proven to be costeffective 9) Processes Knowledge, munications, and teamwork Inexpensive solid state sensors are being developed, for example, that can be inserted in 一種實(shí)用的供配電系統(tǒng)的維護(hù)優(yōu)化計(jì)劃 11 transformer oil to detect the presence of gases produced when insulation begins to deteriorate. Once the information from predictive maintenance technology bees available, it needs to be integrated with online data from across a power work and from historical records. TECHNOLOGIES There are many technologies available today, and several new methods are being investigated to determine the equipment condition [5]. The following are just a few applications for monitoring power delivery equipment: ? Ultrasonic Noise Analysis The presence of tones in the ultrasonic range can be an indication of leaks of air, gas, steam, and vacuum. Ultrasonic noise can be emitted as a result of friction between moving parts. ? Partial Discharge Detection This technology employs an electrical sensor to detect the initial insulation breakdown in electrical equipment such as insulators and terminators. Partial discharge detection is used to detect incipient failures before significant damage occurs. ? Transformer GasinOil Analysis This is needed to keep the
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