Title: Induced Voltage Simulation and Study of DC Transmission Lines With Double Circuit on Same Tower
Abstract: With the demand expansion of transmission capacity,double-circuit transmission lines on the same tower are not only widely used in AC transmission areas,but also emerged in HVDC areas.In this paper,induced voltage problems caused by electromagnetic coupling between the double-circuit transmission lines on the same tower are exhaustively researched.In adopting lightning current simulation model,multi-wave impedance model of towers and the leader flashover model of insulators,the calculation models of lightning shielding failure and ground fault are established.The influence of different operating voltages,wire arrangemenl,soil resistivity and spacing on induction voltage is analyzed.As a reference to Xiluodu DC project,the electromagnetic coupling characteristics are studied in the case of different operation modes,transportation power and installation of line arrester.Based on the simulation of Xiluodu DC project in ATP-EMTP,induced voltages of lightning shielding failure and ground fault are calculated.Compared with the overvoltage value,the main factors affecting the induced voltage between the transmission lines are obtained.
Publication Year: 2014
Publication Date: 2014-01-01
Language: en
Type: article
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