Calculation Method of Integrated Electricity-Gas Energy Flow for Compressors with Constant Speed Control

被引：0
|
作者：
Zhao X. [1 ]
Wang L. [1 ]
Tan H. [1 ]
Dai R. [1 ]
机构：
[1] State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing
来源：
Dianli Xitong Zidonghua/Automation of Electric Power Systems | 2022年 / 46卷 / 21期
关键词：
compressor; constant speed control; energy flow calculation; integrated electricity-gas energy system; loop method; nodal method;
D O I：
10.7500/AEPS20210823006
中图分类号：
学科分类号：
摘要：
The existing research on the hydraulic calculation of the natural gas network and the integrated electricity-gas energy flow calculation is not suitable for the compressors with constant speed control which are widely used in the gas network. The energy flow calculation method suitable for other compressor control modes is also lacking systematic discussion. In this regard, based on the operation characteristics and constant speed control mode of centrifugal compressors, the extended nodal method, node-branch method, and extended node-loop method are proposed for the constant speed control mode of compressors by using the nodal method and the loop method of the hydraulic calculation, and also extended to the integrated electricity-gas energy flow calculation. Three cases of gas network with different topologies and scales, and two cases of integrated electricity-gas energy systems, i.e., the coupled IEEE 39-bus system and the Belgian 20-bus gas network, and the coupled IEEE 118-bus system and the 48-bus gas network, are used to verify the effectiveness of the proposed methods. And the computational performances of the three methods are compared and analyzed. Simulation results show that the extended node-loop method has obvious advantages in terms of initial value independence and operation condition adaptability, while the nodal method widely used in the existing research has the problems of strong initial value dependence and poor operation condition adaptability. © 2022 Automation of Electric Power Systems Press. All rights reserved.
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页码：116 / 124
页数：8
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