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Calculation and Assignment Algorithm of Natural Gas Energy Based on Local Pipe Network |
LÜ Hai-zhou1,YANG Jing-dong1,LIU Wan-ying2,GE Xian-fu3,4 |
1. Zhejiang Energy Natural Gas Group Co. Ltd, Hangzhou, Zhejiang 310007, China
2. Zhejiang Energy Technology Research Institute Co. Ltd, Hangzhou, Zhejiang 310003, China
3. Zhejiang Mechanical and Electrical Group Co. Ltd, Hangzhou, Zhejiang 310020, China
4. Zhejiang Key Laboratory of Flow Metering Technology Research, China Jiliang University, Hangzhou, Zhejiang 310018, China |
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Abstract In the current process of natural gas custody transfer in our country, the measurement method is mostly volume measurement. This measurement method not only cannot meet the commodity transaction principle of natural gas price based on quality, high quality and good price, but also needs to rely on expensive chromatograph analysis. Natural gas energy metering can avoid the defects caused by volume metering, and at the same time, the metering method has high accuracy, and it has increasingly become the method of natural gas trade settlement in various countries in the world. Based on the assignment algorithm of natural gas energy measurement established by the local natural gas pipeline network, the natural gas energy within one week is predicted, and the predicted value is compared with the measured value. The relative error between the predicted value and the measured value is controlled at about 1.8440%, indicating that the established assignment algorithm can predict the calorific value of natural gas within a certain period of time.
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Received: 06 September 2021
Published: 13 January 2023
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