Numerical Calculation Method for Energy Flow of Combined Electricity and Heat Networks

doi:10.3969/j.issn.1000-7229.2020.02.007

Abstract

Abstract: Existing energy flow calculation methods for heat network obtain the state variables by solving the nonlinear equations， and then the network heat loss can be obtained， and the network loss is usually not known before the energy flow calculation. In this paper， the total loss formula of the radiant heating network is strictly derived. The total heating loss can be obtained before the energy flow calculation， and then the mass flow rate and the node temperature of each pipeline can be obtained. The energy flow results can be obtained through the electricity-heat coupling component. The simulation results of a 23-node thermal network and a 33-node power distribution network show that the proposed energy flow calculation model of integrated energy system can achieve the higher accuracy while obtaining faster calculation speed.

Key words: integrated electricity and heat energy systems, energy flow calculation, radial heating network, total heat loss

CLC Number:

TM 61

JING Jiangping， WU Yi， HU Wei， LU Xiao， WANG Wenxue， WEI Zhinong， SUN Guoqiang. Numerical Calculation Method for Energy Flow of Combined Electricity and Heat Networks[J]. Electric Power Construction, 2020, 41(2): 58-66.

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