Dynamic Thermal Rating of Transmission Line Based on Environmental Parameter Estimation
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초록
The transmission capacity of transmission lines is affected by environmental parameters such as ambienttemperature, wind speed, wind direction and so on. The environmental parameters can be measured by theinstalled measuring devices. However, it is impossible to install the environmental measuring devicesthroughout the line, especially considering economic cost of power grid. Taking into account the limitednumber of measuring devices and the distribution characteristics of environment parameters and transmissionlines, this paper first studies the environmental parameter estimating method of inverse distance weightedinterpolation and ordinary Kriging interpolation. Dynamic thermal rating of transmission lines based on IEEEstandard and CIGRE standard thermal equivalent equation is researched and the key parameters that affect theload capacity of overhead lines is identified. Finally, the distributed thermal rating of transmission line isrealized by using the data obtained from China meteorological data network. The cost of the environmentalmeasurement device is reduced, and the accuracy of dynamic rating is improved.
Abstract
The transmission capacity of transmission lines is affected by environmental parameters such as ambienttemperature, wind speed, wind direction and so on. The environmental parameters can be measured by theinstalled measuring devices. However, it is impossible to install the environmental measuring devicesthroughout the line, especially considering economic cost of power grid. Taking into account the limitednumber of measuring devices and the distribution characteristics of environment parameters and transmissionlines, this paper first studies the environmental parameter estimating method of inverse distance weightedinterpolation and ordinary Kriging interpolation. Dynamic thermal rating of transmission lines based on IEEEstandard and CIGRE standard thermal equivalent equation is researched and the key parameters that affect theload capacity of overhead lines is identified. Finally, the distributed thermal rating of transmission line isrealized by using the data obtained from China meteorological data network. The cost of the environmentalmeasurement device is reduced, and the accuracy of dynamic rating is improved.
참고문헌 (15)
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