Abstract
The electromagnetic environment (EME) of a UHV AC transmission project mainly involves the power frequency electric field, power frequency magnetic field, radio interference, and audible noise. Electric charges on operating AC transmission lines or energized conductors in a substation will produce a power frequency electric field in space, and current flowing through lines or conductors will produce a power frequency magnetic field in space. Generally electric fields are expressed by electric field strength, and magnetic fields by magnetic field strength or magnetic flux density. In a strong electric field, when a person insulated against the ground touches a grounding object, or a person at ground potential touches an object insulated against the ground, there may be perceptible current flowing through his/her body or uncomfortable spark discharges may take place. Power frequency magnetic fields can induce current within living organisms, causing voltage over objects near transmission lines, and uncomfortable electric shock. This chapter considers how to control both electric fields and magnetic fields in UHV transmission projects in building and operating UHV grids.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
