Elementary Studies of Electromagnetic Effect from Transients in the High Voltage Transmission System onto its Vicinity and Surrounding System

摘要

Due to the economic advantages, it is expected that other future resource and information transmission/delivery (such as gas pipes, water pipes, telephone cables, mobile repeaters,TV/radio transmitters) will be integrated to the exi sting High Voltage Transmission line Networks (HVTN) route according to its suitability. It is also well known that, being one of the tallest structures around and spanning across regions and states, HVTNs are prone to direct lightning strikes. However, even if the HVTN may be a shield, it may also be a threat to them.The research concentrates on assessing the threat which is electromagnetic field environment when the 275/315kV quad circuit transmission line is struck by lightning. Audthorough ElectroMagnetic Interference (EMI) environment obtained can be used as a guideline to integrate other electrical systems into the right of way of HVTNs, Thus the decision of where to place the accompanying systems with ElectroMagnetic Compatibility (EMC) concerns can beudinferred. The aim is to model this scenario with the attention of estimating the intensity of theudinterference to other electrical systems from the 275/315kV quad circuit transmission line struck by lightning since the electromagnetic waves from the power line (50 Hz), is deemed safe for electrical systems with minimal protection devices. The result would help the design of otherudelectrical systems that would be integrated (especially near the towers) to the HTVN in an effort to be cost efficient.