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The text illustrates methods that ensure the most accurate results in computational modeling for electric power distribution systems.
It clearly explains the principles and mathematics behind system models and discusses the "smart grid" concept and its special benefits. Including numerous models of components and several practical examples, the chapters demonstrate how engineers can apply and customize computer programs to help them plan and operate systems.
The book also covers approximation methods to help users interpret computer program results, and includes references and assignments that help users apply Mathcad and WindMil programs to put their new learning into practice.
Distribution system modeling and analysis, Third Edition (eBook, ) [platcegilmanggal.ml]
William H. Prior to attending graduate school, and for a year after graduate school, he was employed by El Paso Electric Company as a distribution engineer. He joined the faculty at New Mexico State University in and served as professor of electrical engineering and from the director of the Electric Utility Management Program until his retirement in He is currently a consultant for Milsoft Utility Solutions. You will be prompted to fill out a registration form which will be verified by one of our sales reps.
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Load averaged over a specific period of time.
Greatest of all demands that occur Example: during a specific time. The minute Maximum kW demand for the week was kW. Must include demand interval, period, and units. Definitions — Average Demand.
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The average of the demands over a specified period day, week, Example: month, etc. The minute average kW demand for the month was kW. Definitions — Diversified Demand. Sum of demands imposed by a Example: group of loads over a particular The minute period. Definitions — Max. Diversified Demand. Maximum of the sum of demands imposed by a group of loads over a Example: particular period.
The minute max.
Distribution System Modeling and Analysis
Noncoincident Demand. For a group of loads, the sum of the Example: individual maximum demands without The maximum any restriction that they occur at the noncoincident same time. Of course, there may be situations where the and min demands are identical. Instantaneous 6. Individual Customer Load — Max. One method of encouragement is to penalize the customer on the electric bill for having a low power factor.
Individual Customer Load — Load Factor. Each customer will have a demand curve similar to Figure 2. The load curves for the four customers show that each customer has his unique loading characteristic. Distribution Transformer Loading. Energy Average kW Demand 2. The sum of the four minute kW demands for each time interval is the diversified demand for the group in that time interval.
Diversified Demand mimute Max. Diversity Demand. Sorting in descending order, the kW demand of the transformer develops the load duration curve. Or, the sum of the ratings of the electricity consuming apparatus connected to a generating system. Using the Find the utilization factor. Contribution Factor. The connected load is 9 kW for each house, and the demand factor and diversity factor for the group of six houses have been decided as 0. Determine the diversified demand of the group of six houses on the distribution transformer.
Assuming an annual loss factor of 0. One of the feeders supplies an industrial load which occurs primarily between 8 am and 11 pm, with a peak of kW at 2 pm.
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The other one feeds residential loads which occur mainly between 6 am and 12 pm, with a peak of kW at 9 pm. Determine the following: System peak load is kW at 7 pm. Example 5 System peak load Residential load peak Industrial load peak Noon Transmission Line. Distribution Transformer.