Establishment of Time-period Methods for the Estimation of Water Consumption in District Metering Area of Distribution Network

• Main Authors: Hsieh, Yu-Hsuan, 謝瑜軒
• Other Authors: Huang, Chih-Pin
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/8998mq

碩士 === 國立交通大學 === 環境工程系所 === 106 === Water consumption is an important indicator for assessing the status of water supply consumption in a district metering area (DMA). However, water consumption can only be collected through manual meter reading in Taiwan. It is working obtain the same date for the meter reading of the DMA entrance meter and the users. Previously, water consumption rate was directly calculated by using the one-year moving average of water consumption data as a reference for the Taiwan Water Company (TWC). However, this method is too rough to calculate accurate water consumption. Until now a method for the assessment of any time period of water consumption rate has not been established yet in the TWC. This study is aimed at developing a method that could estimate the water consumption at a given short period (1 months). The evaluation interval was fixed for a month with a duplication testing. The testing data was collected from 671 households in two DMAs. The water demand at the evaluation any interval by using the known data from the TWC regular meter was calculated. Those data were verified by additional meter readings at the same interval. The results showed that a linear estimation was the best method with a mean absolute percentage error of 18.35% and correlation (R2) of 0.95 among real data and estimated result. The assessment method in this study showed better results under the given conditions including data from the same meter reading period, low water consumption meter, annual water consumption of 166 to 373 m3, and assessment period of 14 to 61 days. It is confirmed that the method proposed in this study can estimate the water consumption at any given short period with a more accurate value than traditional method.