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Frequent occurrences of meteorological disasters (MD) in recent years have revealed the deficiencies of traditional transmission network planning (TNP) methods, which fail to establish mathematical relationship between the MD and the transmission line outage rate (TLOR) when calculating the vulnerability index of transmission network. As a result, the planning schemes are usually unable to determine...
A simulation model in ATP-EMTP is proposed for calculating lightning transient responses of transmission lines. Both frequency dependent characteristic of transmission line and impulse corona effect are considered in this model. The frequency dependent characteristic is analyzed by Marti line model and a user defined corona model is applied to simulate the effect of impulse corona. The expression...
Accompanying with the speeding up of the scale of grid is becoming larger and larger. GIS Technology promptly adapts itself to the construction of the electrical power information platform with its intensive ability of management analysis towards spatial information and manifestation to the visual spatial information. In this paper, technique about WebGIS is firstly introduced, and then the system...
In this paper, we introduce the ecological influence of transmission line and discuss the electromagnetic field of 500 kV four circuits transmission lines (FCTL) on same tower as well as its ecological environment effect. The paper describes the conventional equivalence charge method (ECM) and presents its disadvantages. Based on this, we propose the two dimensional finite elemental model for the...
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